/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml --sifa.abstract.domain OctagonDomain -i ../sv-benchmarks/c/list-ext2-properties/simple_search_value-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-02 21:40:25,622 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-02 21:40:25,624 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-02 21:40:25,650 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-02 21:40:25,650 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-02 21:40:25,653 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-02 21:40:25,655 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-02 21:40:25,656 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-02 21:40:25,657 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-02 21:40:25,657 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-02 21:40:25,658 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-02 21:40:25,658 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-02 21:40:25,659 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-02 21:40:25,659 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-02 21:40:25,660 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-02 21:40:25,660 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-02 21:40:25,661 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-02 21:40:25,662 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-02 21:40:25,663 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-02 21:40:25,664 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-02 21:40:25,665 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-02 21:40:25,666 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-02 21:40:25,666 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-02 21:40:25,667 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-02 21:40:25,669 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-02 21:40:25,670 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-02 21:40:25,670 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-02 21:40:25,670 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-02 21:40:25,671 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-02 21:40:25,671 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-02 21:40:25,671 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-02 21:40:25,672 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-02 21:40:25,672 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-02 21:40:25,673 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-02 21:40:25,673 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-02 21:40:25,674 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-02 21:40:25,674 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-02 21:40:25,674 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-02 21:40:25,674 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-02 21:40:25,675 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-02 21:40:25,675 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-02 21:40:25,676 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf [2023-04-02 21:40:25,694 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-02 21:40:25,694 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-02 21:40:25,694 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-02 21:40:25,694 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-02 21:40:25,695 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-02 21:40:25,695 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-02 21:40:25,695 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-02 21:40:25,695 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-02 21:40:25,695 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-02 21:40:25,695 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-02 21:40:25,695 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-02 21:40:25,695 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-02 21:40:25,695 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-02 21:40:25,696 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-02 21:40:25,696 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-02 21:40:25,696 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-02 21:40:25,696 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-02 21:40:25,696 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-02 21:40:25,696 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-02 21:40:25,696 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-02 21:40:25,696 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-02 21:40:25,697 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-02 21:40:25,697 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-02 21:40:25,697 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-02 21:40:25,697 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-02 21:40:25,697 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-02 21:40:25,697 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-02 21:40:25,697 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-02 21:40:25,697 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-02 21:40:25,697 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-02 21:40:25,697 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-02 21:40:25,697 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-02 21:40:25,697 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 21:40:25,698 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-02 21:40:25,698 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-02 21:40:25,698 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-02 21:40:25,698 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-02 21:40:25,698 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-02 21:40:25,698 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-02 21:40:25,698 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-02 21:40:25,698 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-02 21:40:25,698 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> OctagonDomain [2023-04-02 21:40:25,893 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-02 21:40:25,918 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-02 21:40:25,920 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-02 21:40:25,920 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-02 21:40:25,921 INFO L275 PluginConnector]: CDTParser initialized [2023-04-02 21:40:25,921 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-ext2-properties/simple_search_value-2.i [2023-04-02 21:40:26,916 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-02 21:40:27,144 INFO L351 CDTParser]: Found 1 translation units. [2023-04-02 21:40:27,145 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-ext2-properties/simple_search_value-2.i [2023-04-02 21:40:27,154 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/01c5f61ee/6960d369d0ef4f0ab6a0da740f922f42/FLAGed39aa4fa [2023-04-02 21:40:27,164 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/01c5f61ee/6960d369d0ef4f0ab6a0da740f922f42 [2023-04-02 21:40:27,166 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-02 21:40:27,167 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-02 21:40:27,167 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-02 21:40:27,167 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-02 21:40:27,177 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-02 21:40:27,177 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 09:40:27" (1/1) ... [2023-04-02 21:40:27,178 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@649f8553 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 09:40:27, skipping insertion in model container [2023-04-02 21:40:27,178 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 09:40:27" (1/1) ... [2023-04-02 21:40:27,182 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-02 21:40:27,215 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-02 21:40:27,354 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/list-ext2-properties/simple_search_value-2.i[23220,23233] [2023-04-02 21:40:27,357 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 21:40:27,364 INFO L203 MainTranslator]: Completed pre-run [2023-04-02 21:40:27,406 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/list-ext2-properties/simple_search_value-2.i[23220,23233] [2023-04-02 21:40:27,407 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 21:40:27,443 INFO L208 MainTranslator]: Completed translation [2023-04-02 21:40:27,443 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 09:40:27 WrapperNode [2023-04-02 21:40:27,444 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-02 21:40:27,444 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-02 21:40:27,445 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-02 21:40:27,445 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-02 21:40:27,452 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 09:40:27" (1/1) ... [2023-04-02 21:40:27,452 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 09:40:27" (1/1) ... [2023-04-02 21:40:27,463 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 09:40:27" (1/1) ... [2023-04-02 21:40:27,463 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 09:40:27" (1/1) ... [2023-04-02 21:40:27,477 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 09:40:27" (1/1) ... [2023-04-02 21:40:27,484 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 09:40:27" (1/1) ... [2023-04-02 21:40:27,485 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 09:40:27" (1/1) ... [2023-04-02 21:40:27,486 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 09:40:27" (1/1) ... [2023-04-02 21:40:27,489 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-02 21:40:27,490 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-02 21:40:27,490 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-02 21:40:27,490 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-02 21:40:27,491 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 09:40:27" (1/1) ... [2023-04-02 21:40:27,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 21:40:27,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 21:40:27,574 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-04-02 21:40:27,597 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-04-02 21:40:27,612 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-02 21:40:27,612 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-02 21:40:27,612 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-02 21:40:27,613 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2023-04-02 21:40:27,613 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2023-04-02 21:40:27,615 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2023-04-02 21:40:27,615 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-02 21:40:27,615 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-02 21:40:27,615 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-02 21:40:27,616 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2023-04-02 21:40:27,616 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2023-04-02 21:40:27,616 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-02 21:40:27,616 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-02 21:40:27,616 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-02 21:40:27,616 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2023-04-02 21:40:27,616 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2023-04-02 21:40:27,616 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2023-04-02 21:40:27,616 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2023-04-02 21:40:27,616 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2023-04-02 21:40:27,617 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2023-04-02 21:40:27,617 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2023-04-02 21:40:27,617 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2023-04-02 21:40:27,617 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2023-04-02 21:40:27,617 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2023-04-02 21:40:27,617 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2023-04-02 21:40:27,617 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2023-04-02 21:40:27,617 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2023-04-02 21:40:27,617 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2023-04-02 21:40:27,617 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2023-04-02 21:40:27,617 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2023-04-02 21:40:27,618 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2023-04-02 21:40:27,618 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2023-04-02 21:40:27,618 INFO L130 BoogieDeclarations]: Found specification of procedure select [2023-04-02 21:40:27,618 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2023-04-02 21:40:27,618 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2023-04-02 21:40:27,618 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2023-04-02 21:40:27,618 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2023-04-02 21:40:27,622 INFO L130 BoogieDeclarations]: Found specification of procedure random [2023-04-02 21:40:27,623 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2023-04-02 21:40:27,623 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2023-04-02 21:40:27,623 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2023-04-02 21:40:27,623 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2023-04-02 21:40:27,623 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2023-04-02 21:40:27,624 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2023-04-02 21:40:27,624 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2023-04-02 21:40:27,624 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2023-04-02 21:40:27,648 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2023-04-02 21:40:27,649 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2023-04-02 21:40:27,649 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2023-04-02 21:40:27,649 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2023-04-02 21:40:27,649 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2023-04-02 21:40:27,649 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2023-04-02 21:40:27,649 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2023-04-02 21:40:27,649 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2023-04-02 21:40:27,650 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2023-04-02 21:40:27,650 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2023-04-02 21:40:27,650 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2023-04-02 21:40:27,650 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2023-04-02 21:40:27,650 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2023-04-02 21:40:27,651 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2023-04-02 21:40:27,651 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2023-04-02 21:40:27,652 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2023-04-02 21:40:27,652 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2023-04-02 21:40:27,652 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2023-04-02 21:40:27,652 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2023-04-02 21:40:27,652 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2023-04-02 21:40:27,652 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2023-04-02 21:40:27,652 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2023-04-02 21:40:27,652 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2023-04-02 21:40:27,652 INFO L130 BoogieDeclarations]: Found specification of procedure free [2023-04-02 21:40:27,652 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2023-04-02 21:40:27,652 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2023-04-02 21:40:27,653 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2023-04-02 21:40:27,653 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2023-04-02 21:40:27,653 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2023-04-02 21:40:27,653 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2023-04-02 21:40:27,653 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2023-04-02 21:40:27,653 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2023-04-02 21:40:27,653 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2023-04-02 21:40:27,653 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2023-04-02 21:40:27,654 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2023-04-02 21:40:27,654 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2023-04-02 21:40:27,654 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2023-04-02 21:40:27,654 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2023-04-02 21:40:27,654 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2023-04-02 21:40:27,654 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2023-04-02 21:40:27,654 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2023-04-02 21:40:27,654 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2023-04-02 21:40:27,654 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2023-04-02 21:40:27,654 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2023-04-02 21:40:27,654 INFO L130 BoogieDeclarations]: Found specification of procedure system [2023-04-02 21:40:27,655 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2023-04-02 21:40:27,655 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2023-04-02 21:40:27,655 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2023-04-02 21:40:27,655 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2023-04-02 21:40:27,655 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2023-04-02 21:40:27,655 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2023-04-02 21:40:27,655 INFO L130 BoogieDeclarations]: Found specification of procedure div [2023-04-02 21:40:27,655 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2023-04-02 21:40:27,655 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2023-04-02 21:40:27,655 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2023-04-02 21:40:27,655 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2023-04-02 21:40:27,655 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2023-04-02 21:40:27,655 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2023-04-02 21:40:27,655 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2023-04-02 21:40:27,655 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2023-04-02 21:40:27,656 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2023-04-02 21:40:27,656 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2023-04-02 21:40:27,656 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2023-04-02 21:40:27,656 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2023-04-02 21:40:27,656 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2023-04-02 21:40:27,656 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2023-04-02 21:40:27,656 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2023-04-02 21:40:27,656 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2023-04-02 21:40:27,656 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2023-04-02 21:40:27,656 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2023-04-02 21:40:27,657 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2023-04-02 21:40:27,657 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2023-04-02 21:40:27,658 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2023-04-02 21:40:27,658 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-02 21:40:27,658 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-04-02 21:40:27,659 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-02 21:40:27,660 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-04-02 21:40:27,660 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-04-02 21:40:27,664 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-02 21:40:27,664 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-02 21:40:27,664 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-02 21:40:27,665 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-02 21:40:27,665 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-02 21:40:27,979 INFO L236 CfgBuilder]: Building ICFG [2023-04-02 21:40:27,980 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-02 21:40:28,069 INFO L771 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2023-04-02 21:40:28,184 INFO L277 CfgBuilder]: Performing block encoding [2023-04-02 21:40:28,232 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-02 21:40:28,232 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-04-02 21:40:28,234 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 09:40:28 BoogieIcfgContainer [2023-04-02 21:40:28,234 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-02 21:40:28,238 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-02 21:40:28,238 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-02 21:40:28,240 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-02 21:40:28,240 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.04 09:40:27" (1/3) ... [2023-04-02 21:40:28,240 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@225fa3fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 09:40:28, skipping insertion in model container [2023-04-02 21:40:28,240 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 09:40:27" (2/3) ... [2023-04-02 21:40:28,240 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@225fa3fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 09:40:28, skipping insertion in model container [2023-04-02 21:40:28,240 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 09:40:28" (3/3) ... [2023-04-02 21:40:28,241 INFO L112 eAbstractionObserver]: Analyzing ICFG simple_search_value-2.i [2023-04-02 21:40:28,254 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-02 21:40:28,254 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-02 21:40:28,292 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-02 21:40:28,296 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;@4c10dce3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-02 21:40:28,297 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-02 21:40:28,299 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 16 states have (on average 1.4375) internal successors, (23), 18 states have internal predecessors, (23), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-02 21:40:28,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-04-02 21:40:28,304 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 21:40:28,305 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 21:40:28,305 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 21:40:28,309 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 21:40:28,310 INFO L85 PathProgramCache]: Analyzing trace with hash -1337843094, now seen corresponding path program 1 times [2023-04-02 21:40:28,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 21:40:28,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252009301] [2023-04-02 21:40:28,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 21:40:28,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 21:40:28,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 21:40:28,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 21:40:28,450 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 21:40:28,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252009301] [2023-04-02 21:40:28,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1252009301] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 21:40:28,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 21:40:28,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-04-02 21:40:28,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291119934] [2023-04-02 21:40:28,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 21:40:28,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-04-02 21:40:28,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 21:40:28,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-04-02 21:40:28,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-04-02 21:40:28,489 INFO L87 Difference]: Start difference. First operand has 24 states, 16 states have (on average 1.4375) internal successors, (23), 18 states have internal predecessors, (23), 4 states have call successors, (4), 3 states have call predecessors, (4), 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 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) [2023-04-02 21:40:28,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 21:40:28,518 INFO L93 Difference]: Finished difference Result 33 states and 39 transitions. [2023-04-02 21:40:28,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-04-02 21:40:28,519 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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 12 [2023-04-02 21:40:28,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 21:40:28,523 INFO L225 Difference]: With dead ends: 33 [2023-04-02 21:40:28,523 INFO L226 Difference]: Without dead ends: 16 [2023-04-02 21:40:28,525 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 [2023-04-02 21:40:28,527 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-02 21:40:28,528 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 22 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-02 21:40:28,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2023-04-02 21:40:28,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2023-04-02 21:40:28,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 12 states have internal predecessors, (14), 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) [2023-04-02 21:40:28,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2023-04-02 21:40:28,548 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 12 [2023-04-02 21:40:28,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 21:40:28,549 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2023-04-02 21:40:28,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) [2023-04-02 21:40:28,550 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2023-04-02 21:40:28,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-04-02 21:40:28,550 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 21:40:28,551 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 21:40:28,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-02 21:40:28,551 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 21:40:28,551 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 21:40:28,551 INFO L85 PathProgramCache]: Analyzing trace with hash -1000938018, now seen corresponding path program 1 times [2023-04-02 21:40:28,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 21:40:28,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094157244] [2023-04-02 21:40:28,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 21:40:28,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 21:40:28,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 21:40:28,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 21:40:28,640 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 21:40:28,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094157244] [2023-04-02 21:40:28,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094157244] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 21:40:28,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 21:40:28,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 21:40:28,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495706143] [2023-04-02 21:40:28,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 21:40:28,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 21:40:28,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 21:40:28,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 21:40:28,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 21:40:28,642 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 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) [2023-04-02 21:40:28,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 21:40:28,665 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2023-04-02 21:40:28,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-04-02 21:40:28,666 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 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 [2023-04-02 21:40:28,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 21:40:28,666 INFO L225 Difference]: With dead ends: 25 [2023-04-02 21:40:28,666 INFO L226 Difference]: Without dead ends: 22 [2023-04-02 21:40:28,667 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 21:40:28,667 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 17 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-02 21:40:28,668 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 19 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-02 21:40:28,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2023-04-02 21:40:28,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 17. [2023-04-02 21:40:28,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 13 states have (on average 1.1538461538461537) 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) [2023-04-02 21:40:28,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2023-04-02 21:40:28,671 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 13 [2023-04-02 21:40:28,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 21:40:28,671 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2023-04-02 21:40:28,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 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) [2023-04-02 21:40:28,671 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2023-04-02 21:40:28,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-04-02 21:40:28,672 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 21:40:28,672 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 21:40:28,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-02 21:40:28,672 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 21:40:28,672 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 21:40:28,672 INFO L85 PathProgramCache]: Analyzing trace with hash -964364164, now seen corresponding path program 1 times [2023-04-02 21:40:28,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 21:40:28,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073247992] [2023-04-02 21:40:28,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 21:40:28,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 21:40:28,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 21:40:28,753 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-04-02 21:40:28,753 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 21:40:28,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073247992] [2023-04-02 21:40:28,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073247992] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 21:40:28,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 21:40:28,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 21:40:28,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831101168] [2023-04-02 21:40:28,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 21:40:28,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 21:40:28,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 21:40:28,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 21:40:28,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 21:40:28,755 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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) [2023-04-02 21:40:28,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 21:40:28,775 INFO L93 Difference]: Finished difference Result 27 states and 29 transitions. [2023-04-02 21:40:28,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-04-02 21:40:28,776 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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 14 [2023-04-02 21:40:28,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 21:40:28,776 INFO L225 Difference]: With dead ends: 27 [2023-04-02 21:40:28,776 INFO L226 Difference]: Without dead ends: 21 [2023-04-02 21:40:28,777 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 21:40:28,777 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 3 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-02 21:40:28,778 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 30 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-02 21:40:28,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2023-04-02 21:40:28,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 19. [2023-04-02 21:40:28,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 15 states have (on average 1.1333333333333333) 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) [2023-04-02 21:40:28,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2023-04-02 21:40:28,781 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 14 [2023-04-02 21:40:28,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 21:40:28,781 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2023-04-02 21:40:28,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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) [2023-04-02 21:40:28,781 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2023-04-02 21:40:28,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-04-02 21:40:28,781 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 21:40:28,781 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 21:40:28,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-02 21:40:28,782 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 21:40:28,782 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 21:40:28,782 INFO L85 PathProgramCache]: Analyzing trace with hash -1996318780, now seen corresponding path program 1 times [2023-04-02 21:40:28,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 21:40:28,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784848530] [2023-04-02 21:40:28,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 21:40:28,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 21:40:28,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 21:40:28,870 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-04-02 21:40:28,870 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 21:40:28,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784848530] [2023-04-02 21:40:28,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784848530] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 21:40:28,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1610710315] [2023-04-02 21:40:28,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 21:40:28,871 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 21:40:28,871 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 21:40:28,873 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 21:40:28,874 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-04-02 21:40:28,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 21:40:28,996 INFO L262 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 5 conjunts are in the unsatisfiable core [2023-04-02 21:40:29,000 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 21:40:29,032 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-04-02 21:40:29,032 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 21:40:29,060 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-04-02 21:40:29,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1610710315] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 21:40:29,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1523514148] [2023-04-02 21:40:29,072 INFO L159 IcfgInterpreter]: Started Sifa with 16 locations of interest [2023-04-02 21:40:29,072 INFO L166 IcfgInterpreter]: Building call graph [2023-04-02 21:40:29,074 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-02 21:40:29,077 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-02 21:40:29,077 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-02 21:40:29,144 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 24 for LOIs [2023-04-02 21:40:29,511 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2023-04-02 21:40:29,514 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-02 21:40:29,982 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '341#(and (<= (+ main_~a~0.base 1) |#StackHeapBarrier|) (= main_~a~0.offset 0) (<= 1 (+ |#StackHeapBarrier| main_~hasTwo~0)) (<= 1 (+ main_~hasTwelve~0 |#StackHeapBarrier|)) (or (= main_~hasTwelve~0 0) (= main_~hasTwo~0 0)) (= main_~p~0.base 0) (= |#NULL.offset| 0) (<= 10 main_~counter~0) (= main_~p~0.offset 0) (<= 0 (+ main_~hasTwelve~0 main_~hasTwo~0)) (= |#NULL.base| 0))' at error location [2023-04-02 21:40:29,982 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-02 21:40:29,982 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 21:40:29,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2023-04-02 21:40:29,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330044345] [2023-04-02 21:40:29,983 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 21:40:29,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-02 21:40:29,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 21:40:29,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-02 21:40:29,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=346, Unknown=1, NotChecked=0, Total=420 [2023-04-02 21:40:29,984 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand has 8 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 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) [2023-04-02 21:40:30,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 21:40:30,038 INFO L93 Difference]: Finished difference Result 39 states and 43 transitions. [2023-04-02 21:40:30,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-04-02 21:40:30,038 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 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 [2023-04-02 21:40:30,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 21:40:30,039 INFO L225 Difference]: With dead ends: 39 [2023-04-02 21:40:30,039 INFO L226 Difference]: Without dead ends: 33 [2023-04-02 21:40:30,039 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=102, Invalid=497, Unknown=1, NotChecked=0, Total=600 [2023-04-02 21:40:30,040 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-02 21:40:30,040 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 41 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-02 21:40:30,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2023-04-02 21:40:30,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 31. [2023-04-02 21:40:30,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 27 states have (on average 1.0740740740740742) internal successors, (29), 27 states have internal predecessors, (29), 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) [2023-04-02 21:40:30,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 32 transitions. [2023-04-02 21:40:30,043 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 32 transitions. Word has length 18 [2023-04-02 21:40:30,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 21:40:30,043 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 32 transitions. [2023-04-02 21:40:30,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 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) [2023-04-02 21:40:30,044 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 32 transitions. [2023-04-02 21:40:30,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-04-02 21:40:30,044 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 21:40:30,044 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 21:40:30,050 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-04-02 21:40:30,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 21:40:30,250 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 21:40:30,250 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 21:40:30,250 INFO L85 PathProgramCache]: Analyzing trace with hash 404626844, now seen corresponding path program 2 times [2023-04-02 21:40:30,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 21:40:30,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380268138] [2023-04-02 21:40:30,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 21:40:30,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 21:40:30,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 21:40:30,534 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-04-02 21:40:30,535 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 21:40:30,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380268138] [2023-04-02 21:40:30,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380268138] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 21:40:30,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [842334730] [2023-04-02 21:40:30,535 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-04-02 21:40:30,535 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 21:40:30,535 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 21:40:30,536 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 21:40:30,538 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-04-02 21:40:30,879 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-04-02 21:40:30,879 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-02 21:40:30,881 INFO L262 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 8 conjunts are in the unsatisfiable core [2023-04-02 21:40:30,885 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 21:40:30,916 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-04-02 21:40:30,916 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 21:40:30,979 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-04-02 21:40:30,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [842334730] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 21:40:30,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1735773224] [2023-04-02 21:40:30,981 INFO L159 IcfgInterpreter]: Started Sifa with 16 locations of interest [2023-04-02 21:40:30,981 INFO L166 IcfgInterpreter]: Building call graph [2023-04-02 21:40:30,981 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-02 21:40:30,981 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-02 21:40:30,981 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-02 21:40:30,998 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 24 for LOIs [2023-04-02 21:40:31,194 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2023-04-02 21:40:31,199 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-02 21:40:31,585 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '647#(and (<= (+ main_~a~0.base 1) |#StackHeapBarrier|) (= main_~a~0.offset 0) (<= 1 (+ |#StackHeapBarrier| main_~hasTwo~0)) (<= 1 (+ main_~hasTwelve~0 |#StackHeapBarrier|)) (or (= main_~hasTwelve~0 0) (= main_~hasTwo~0 0)) (= main_~p~0.base 0) (= |#NULL.offset| 0) (<= 10 main_~counter~0) (= main_~p~0.offset 0) (<= 0 (+ main_~hasTwelve~0 main_~hasTwo~0)) (= |#NULL.base| 0))' at error location [2023-04-02 21:40:31,586 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-02 21:40:31,586 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 21:40:31,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 14 [2023-04-02 21:40:31,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662033419] [2023-04-02 21:40:31,586 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 21:40:31,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-04-02 21:40:31,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 21:40:31,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-04-02 21:40:31,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=524, Unknown=0, NotChecked=0, Total=650 [2023-04-02 21:40:31,587 INFO L87 Difference]: Start difference. First operand 31 states and 32 transitions. Second operand has 14 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 14 states have internal predecessors, (50), 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) [2023-04-02 21:40:31,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 21:40:31,726 INFO L93 Difference]: Finished difference Result 63 states and 70 transitions. [2023-04-02 21:40:31,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-04-02 21:40:31,727 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 14 states have internal predecessors, (50), 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 30 [2023-04-02 21:40:31,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 21:40:31,728 INFO L225 Difference]: With dead ends: 63 [2023-04-02 21:40:31,728 INFO L226 Difference]: Without dead ends: 57 [2023-04-02 21:40:31,728 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 349 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=257, Invalid=1003, Unknown=0, NotChecked=0, Total=1260 [2023-04-02 21:40:31,729 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 21:40:31,729 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 71 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 21:40:31,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2023-04-02 21:40:31,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 55. [2023-04-02 21:40:31,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 51 states have (on average 1.0392156862745099) internal successors, (53), 51 states have internal predecessors, (53), 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) [2023-04-02 21:40:31,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 56 transitions. [2023-04-02 21:40:31,733 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 56 transitions. Word has length 30 [2023-04-02 21:40:31,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 21:40:31,734 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 56 transitions. [2023-04-02 21:40:31,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 14 states have internal predecessors, (50), 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) [2023-04-02 21:40:31,734 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 56 transitions. [2023-04-02 21:40:31,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-04-02 21:40:31,734 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 21:40:31,735 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 21:40:31,742 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-04-02 21:40:31,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 21:40:31,942 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 21:40:31,942 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 21:40:31,942 INFO L85 PathProgramCache]: Analyzing trace with hash 1988435276, now seen corresponding path program 3 times [2023-04-02 21:40:31,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 21:40:31,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271117240] [2023-04-02 21:40:31,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 21:40:31,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 21:40:32,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 21:40:34,850 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 0 proven. 73 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2023-04-02 21:40:34,851 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 21:40:34,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271117240] [2023-04-02 21:40:34,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271117240] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 21:40:34,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [528291484] [2023-04-02 21:40:34,852 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-04-02 21:40:34,852 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 21:40:34,852 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 21:40:34,867 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 21:40:34,908 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-04-02 21:40:36,793 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-04-02 21:40:36,793 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-02 21:40:36,800 INFO L262 TraceCheckSpWp]: Trace formula consists of 567 conjuncts, 175 conjunts are in the unsatisfiable core [2023-04-02 21:40:36,808 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 21:40:36,844 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 [2023-04-02 21:40:36,891 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-04-02 21:40:36,892 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2023-04-02 21:40:36,933 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-04-02 21:40:36,970 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-04-02 21:40:36,970 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 [2023-04-02 21:40:36,983 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-04-02 21:40:36,983 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 1 case distinctions, treesize of input 30 treesize of output 28 [2023-04-02 21:40:37,030 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2023-04-02 21:40:37,030 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 37 [2023-04-02 21:40:37,096 INFO L321 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size [2023-04-02 21:40:37,097 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 65 treesize of output 61 [2023-04-02 21:40:37,117 INFO L321 Elim1Store]: treesize reduction 48, result has 36.0 percent of original size [2023-04-02 21:40:37,117 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 41 [2023-04-02 21:40:37,136 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 33 treesize of output 17 [2023-04-02 21:40:37,338 INFO L321 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size [2023-04-02 21:40:37,339 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 116 treesize of output 104 [2023-04-02 21:40:37,383 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 37 treesize of output 21 [2023-04-02 21:40:37,538 INFO L321 Elim1Store]: treesize reduction 28, result has 40.4 percent of original size [2023-04-02 21:40:37,538 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 104 treesize of output 100 [2023-04-02 21:40:37,623 INFO L321 Elim1Store]: treesize reduction 164, result has 36.9 percent of original size [2023-04-02 21:40:37,623 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 19 case distinctions, treesize of input 76 treesize of output 152 [2023-04-02 21:40:37,961 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 34 treesize of output 18 [2023-04-02 21:40:37,982 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 8 treesize of output 4 [2023-04-02 21:40:37,995 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 8 treesize of output 4 [2023-04-02 21:40:38,002 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 34 treesize of output 18 [2023-04-02 21:40:38,021 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 9 treesize of output 5 [2023-04-02 21:40:38,028 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 7 treesize of output 3 [2023-04-02 21:40:38,317 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 453 treesize of output 385 [2023-04-02 21:40:47,196 WARN L223 SmtUtils]: Spent 8.46s on a formula simplification. DAG size of input: 252 DAG size of output: 133 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-04-02 21:40:47,584 INFO L321 Elim1Store]: treesize reduction 66, result has 67.2 percent of original size [2023-04-02 21:40:47,584 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 273 treesize of output 330 [2023-04-02 21:42:33,722 WARN L223 SmtUtils]: Spent 11.93s on a formula simplification. DAG size of input: 2214 DAG size of output: 2214 (called from [L 809] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)