/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 IntervalDomain -i ../sv-benchmarks/c/array-examples/standard_maxInArray_ground.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-03-31 20:39:02,736 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-03-31 20:39:02,739 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-03-31 20:39:02,777 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-03-31 20:39:02,778 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-03-31 20:39:02,780 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-03-31 20:39:02,784 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-03-31 20:39:02,786 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-03-31 20:39:02,787 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-03-31 20:39:02,792 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-03-31 20:39:02,794 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-03-31 20:39:02,796 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-03-31 20:39:02,796 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-03-31 20:39:02,798 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-03-31 20:39:02,799 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-03-31 20:39:02,800 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-03-31 20:39:02,801 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-03-31 20:39:02,801 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-03-31 20:39:02,803 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-03-31 20:39:02,808 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-03-31 20:39:02,809 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-03-31 20:39:02,810 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-03-31 20:39:02,811 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-03-31 20:39:02,812 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-03-31 20:39:02,820 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-03-31 20:39:02,820 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-03-31 20:39:02,820 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-03-31 20:39:02,822 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-03-31 20:39:02,822 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-03-31 20:39:02,823 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-03-31 20:39:02,823 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-03-31 20:39:02,824 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-03-31 20:39:02,825 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-03-31 20:39:02,826 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-03-31 20:39:02,826 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-03-31 20:39:02,826 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-03-31 20:39:02,827 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-03-31 20:39:02,827 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-03-31 20:39:02,827 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-03-31 20:39:02,828 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-03-31 20:39:02,829 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-03-31 20:39:02,829 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 [2023-03-31 20:39:02,858 INFO L113 SettingsManager]: Loading preferences was successful [2023-03-31 20:39:02,859 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-03-31 20:39:02,859 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-03-31 20:39:02,859 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-03-31 20:39:02,860 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-03-31 20:39:02,860 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-03-31 20:39:02,860 INFO L138 SettingsManager]: * User list type=DISABLED [2023-03-31 20:39:02,860 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-03-31 20:39:02,860 INFO L138 SettingsManager]: * Explicit value domain=true [2023-03-31 20:39:02,861 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-03-31 20:39:02,861 INFO L138 SettingsManager]: * Octagon Domain=false [2023-03-31 20:39:02,861 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-03-31 20:39:02,861 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-03-31 20:39:02,862 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-03-31 20:39:02,862 INFO L138 SettingsManager]: * Interval Domain=false [2023-03-31 20:39:02,862 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-03-31 20:39:02,862 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-03-31 20:39:02,862 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-03-31 20:39:02,862 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-03-31 20:39:02,863 INFO L138 SettingsManager]: * sizeof long=4 [2023-03-31 20:39:02,863 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-03-31 20:39:02,863 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-03-31 20:39:02,863 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-03-31 20:39:02,863 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-03-31 20:39:02,863 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-03-31 20:39:02,863 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-03-31 20:39:02,863 INFO L138 SettingsManager]: * sizeof long double=12 [2023-03-31 20:39:02,863 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-03-31 20:39:02,864 INFO L138 SettingsManager]: * Use constant arrays=true [2023-03-31 20:39:02,864 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-03-31 20:39:02,864 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-03-31 20:39:02,864 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-03-31 20:39:02,864 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 20:39:02,864 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-03-31 20:39:02,864 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-03-31 20:39:02,865 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-03-31 20:39:02,865 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-03-31 20:39:02,865 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-03-31 20:39:02,865 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-03-31 20:39:02,865 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-03-31 20:39:02,865 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-03-31 20:39:02,865 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> IntervalDomain [2023-03-31 20:39:03,090 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-03-31 20:39:03,107 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-03-31 20:39:03,109 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-03-31 20:39:03,110 INFO L271 PluginConnector]: Initializing CDTParser... [2023-03-31 20:39:03,110 INFO L275 PluginConnector]: CDTParser initialized [2023-03-31 20:39:03,111 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-examples/standard_maxInArray_ground.i [2023-03-31 20:39:04,203 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-03-31 20:39:04,417 INFO L351 CDTParser]: Found 1 translation units. [2023-03-31 20:39:04,417 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/standard_maxInArray_ground.i [2023-03-31 20:39:04,423 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/62d4748f6/c3d46a10cfe14384809e29b4b5e26b48/FLAG358822611 [2023-03-31 20:39:04,439 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/62d4748f6/c3d46a10cfe14384809e29b4b5e26b48 [2023-03-31 20:39:04,441 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-03-31 20:39:04,443 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-03-31 20:39:04,446 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-03-31 20:39:04,446 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-03-31 20:39:04,449 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-03-31 20:39:04,449 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 08:39:04" (1/1) ... [2023-03-31 20:39:04,451 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16879a3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 08:39:04, skipping insertion in model container [2023-03-31 20:39:04,452 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 08:39:04" (1/1) ... [2023-03-31 20:39:04,457 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-03-31 20:39:04,472 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-03-31 20:39:04,623 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/array-examples/standard_maxInArray_ground.i[819,832] [2023-03-31 20:39:04,634 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 20:39:04,643 INFO L203 MainTranslator]: Completed pre-run [2023-03-31 20:39:04,653 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/array-examples/standard_maxInArray_ground.i[819,832] [2023-03-31 20:39:04,658 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 20:39:04,670 INFO L208 MainTranslator]: Completed translation [2023-03-31 20:39:04,671 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 08:39:04 WrapperNode [2023-03-31 20:39:04,671 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-03-31 20:39:04,672 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-03-31 20:39:04,672 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-03-31 20:39:04,672 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-03-31 20:39:04,682 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 08:39:04" (1/1) ... [2023-03-31 20:39:04,682 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 08:39:04" (1/1) ... [2023-03-31 20:39:04,689 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 08:39:04" (1/1) ... [2023-03-31 20:39:04,689 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 08:39:04" (1/1) ... [2023-03-31 20:39:04,699 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 08:39:04" (1/1) ... [2023-03-31 20:39:04,705 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 08:39:04" (1/1) ... [2023-03-31 20:39:04,706 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 08:39:04" (1/1) ... [2023-03-31 20:39:04,707 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 08:39:04" (1/1) ... [2023-03-31 20:39:04,709 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-03-31 20:39:04,709 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-03-31 20:39:04,710 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-03-31 20:39:04,710 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-03-31 20:39:04,710 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 08:39:04" (1/1) ... [2023-03-31 20:39:04,716 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 20:39:04,723 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 20:39:04,741 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) [2023-03-31 20:39:04,742 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 [2023-03-31 20:39:04,779 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-03-31 20:39:04,780 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-03-31 20:39:04,780 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-03-31 20:39:04,781 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-03-31 20:39:04,781 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-03-31 20:39:04,782 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-03-31 20:39:04,782 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-03-31 20:39:04,782 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2023-03-31 20:39:04,782 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2023-03-31 20:39:04,782 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-03-31 20:39:04,782 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-03-31 20:39:04,782 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-03-31 20:39:04,782 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-03-31 20:39:04,783 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-03-31 20:39:04,783 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-03-31 20:39:04,783 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-03-31 20:39:04,783 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-03-31 20:39:04,783 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-03-31 20:39:04,783 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-03-31 20:39:04,783 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-03-31 20:39:04,783 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-03-31 20:39:04,844 INFO L236 CfgBuilder]: Building ICFG [2023-03-31 20:39:04,846 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-03-31 20:39:04,964 INFO L277 CfgBuilder]: Performing block encoding [2023-03-31 20:39:05,021 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-03-31 20:39:05,022 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-03-31 20:39:05,024 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 08:39:05 BoogieIcfgContainer [2023-03-31 20:39:05,024 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-03-31 20:39:05,026 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-03-31 20:39:05,026 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-03-31 20:39:05,028 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-03-31 20:39:05,028 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.03 08:39:04" (1/3) ... [2023-03-31 20:39:05,029 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@617d5726 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 08:39:05, skipping insertion in model container [2023-03-31 20:39:05,029 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 08:39:04" (2/3) ... [2023-03-31 20:39:05,029 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@617d5726 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 08:39:05, skipping insertion in model container [2023-03-31 20:39:05,030 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 08:39:05" (3/3) ... [2023-03-31 20:39:05,031 INFO L112 eAbstractionObserver]: Analyzing ICFG standard_maxInArray_ground.i [2023-03-31 20:39:05,068 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-03-31 20:39:05,068 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-03-31 20:39:05,130 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-03-31 20:39:05,136 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;@202d89ea, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-03-31 20:39:05,137 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-03-31 20:39:05,141 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-03-31 20:39:05,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-03-31 20:39:05,148 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 20:39:05,148 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 20:39:05,149 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 20:39:05,156 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 20:39:05,157 INFO L85 PathProgramCache]: Analyzing trace with hash 1671142732, now seen corresponding path program 1 times [2023-03-31 20:39:05,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 20:39:05,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112135235] [2023-03-31 20:39:05,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 20:39:05,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 20:39:05,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 20:39:05,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 20:39:05,436 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 20:39:05,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112135235] [2023-03-31 20:39:05,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112135235] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 20:39:05,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 20:39:05,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-03-31 20:39:05,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124878356] [2023-03-31 20:39:05,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 20:39:05,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-03-31 20:39:05,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 20:39:05,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-03-31 20:39:05,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-03-31 20:39:05,482 INFO L87 Difference]: Start difference. First operand has 19 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 20:39:05,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 20:39:05,541 INFO L93 Difference]: Finished difference Result 33 states and 40 transitions. [2023-03-31 20:39:05,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-03-31 20:39:05,545 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2023-03-31 20:39:05,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 20:39:05,550 INFO L225 Difference]: With dead ends: 33 [2023-03-31 20:39:05,551 INFO L226 Difference]: Without dead ends: 17 [2023-03-31 20:39:05,554 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-03-31 20:39:05,560 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-03-31 20:39:05,561 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 27 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-03-31 20:39:05,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2023-03-31 20:39:05,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2023-03-31 20:39:05,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 states have internal predecessors, (14), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-03-31 20:39:05,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2023-03-31 20:39:05,603 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 12 [2023-03-31 20:39:05,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 20:39:05,604 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2023-03-31 20:39:05,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 20:39:05,604 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2023-03-31 20:39:05,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-03-31 20:39:05,605 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 20:39:05,605 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 20:39:05,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-03-31 20:39:05,606 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 20:39:05,607 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 20:39:05,608 INFO L85 PathProgramCache]: Analyzing trace with hash -457034411, now seen corresponding path program 1 times [2023-03-31 20:39:05,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 20:39:05,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293656457] [2023-03-31 20:39:05,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 20:39:05,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 20:39:05,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 20:39:05,710 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-03-31 20:39:05,711 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 20:39:05,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293656457] [2023-03-31 20:39:05,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293656457] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 20:39:05,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 20:39:05,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-03-31 20:39:05,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348291748] [2023-03-31 20:39:05,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 20:39:05,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-03-31 20:39:05,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 20:39:05,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-03-31 20:39:05,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-03-31 20:39:05,714 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 20:39:05,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 20:39:05,738 INFO L93 Difference]: Finished difference Result 27 states and 30 transitions. [2023-03-31 20:39:05,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-03-31 20:39:05,739 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2023-03-31 20:39:05,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 20:39:05,740 INFO L225 Difference]: With dead ends: 27 [2023-03-31 20:39:05,741 INFO L226 Difference]: Without dead ends: 18 [2023-03-31 20:39:05,744 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-03-31 20:39:05,745 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-03-31 20:39:05,745 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 24 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-03-31 20:39:05,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2023-03-31 20:39:05,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2023-03-31 20:39:05,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-03-31 20:39:05,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2023-03-31 20:39:05,749 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 13 [2023-03-31 20:39:05,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 20:39:05,750 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2023-03-31 20:39:05,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 20:39:05,750 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2023-03-31 20:39:05,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-03-31 20:39:05,750 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 20:39:05,751 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 20:39:05,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-03-31 20:39:05,751 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 20:39:05,751 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 20:39:05,752 INFO L85 PathProgramCache]: Analyzing trace with hash 697783642, now seen corresponding path program 1 times [2023-03-31 20:39:05,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 20:39:05,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008041031] [2023-03-31 20:39:05,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 20:39:05,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 20:39:05,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 20:39:05,856 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-03-31 20:39:05,857 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 20:39:05,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008041031] [2023-03-31 20:39:05,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008041031] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-31 20:39:05,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [816877204] [2023-03-31 20:39:05,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 20:39:05,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 20:39:05,859 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 20:39:05,862 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) [2023-03-31 20:39:05,864 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-03-31 20:39:05,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 20:39:05,936 INFO L262 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 3 conjunts are in the unsatisfiable core [2023-03-31 20:39:05,942 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-31 20:39:05,981 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-03-31 20:39:05,981 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-31 20:39:06,019 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-03-31 20:39:06,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [816877204] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-31 20:39:06,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1485519627] [2023-03-31 20:39:06,038 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2023-03-31 20:39:06,038 INFO L166 IcfgInterpreter]: Building call graph [2023-03-31 20:39:06,041 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-03-31 20:39:06,046 INFO L176 IcfgInterpreter]: Starting interpretation [2023-03-31 20:39:06,046 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-03-31 20:39:06,109 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 17 for LOIs [2023-03-31 20:39:06,298 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 33 for LOIs [2023-03-31 20:39:06,354 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2023-03-31 20:39:06,365 INFO L180 IcfgInterpreter]: Interpretation finished [2023-03-31 20:39:06,753 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '260#(and (exists ((v_main_~max~0_BEFORE_CALL_1 Int) (v_main_~j~0_BEFORE_CALL_1 Int) (|v_main_~#a~0.offset_BEFORE_CALL_1| Int) (|v_main_~#a~0.base_BEFORE_CALL_1| Int)) (and (< v_main_~max~0_BEFORE_CALL_1 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_1|) |v_main_~#a~0.offset_BEFORE_CALL_1|)) (or (and (<= 0 |v_main_~#a~0.base_BEFORE_CALL_1|) (= |v_main_~#a~0.offset_BEFORE_CALL_1| 0) (= |#NULL.offset| 0) (<= 100000 v_main_~j~0_BEFORE_CALL_1) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0)) (and (<= 0 |v_main_~#a~0.base_BEFORE_CALL_1|) (= v_main_~max~0_BEFORE_CALL_1 0) (= |v_main_~#a~0.offset_BEFORE_CALL_1| 0) (= |#NULL.offset| 0) (<= 100000 v_main_~j~0_BEFORE_CALL_1) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))))) (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0))' at error location [2023-03-31 20:39:06,753 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-03-31 20:39:06,753 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-03-31 20:39:06,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2023-03-31 20:39:06,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663541202] [2023-03-31 20:39:06,754 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-03-31 20:39:06,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-03-31 20:39:06,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 20:39:06,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-03-31 20:39:06,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2023-03-31 20:39:06,756 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 20:39:06,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 20:39:06,784 INFO L93 Difference]: Finished difference Result 32 states and 38 transitions. [2023-03-31 20:39:06,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-03-31 20:39:06,784 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2023-03-31 20:39:06,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 20:39:06,785 INFO L225 Difference]: With dead ends: 32 [2023-03-31 20:39:06,786 INFO L226 Difference]: Without dead ends: 21 [2023-03-31 20:39:06,788 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2023-03-31 20:39:06,791 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-03-31 20:39:06,792 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 23 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-03-31 20:39:06,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2023-03-31 20:39:06,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2023-03-31 20:39:06,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 15 states have (on average 1.2) internal successors, (18), 15 states have internal predecessors, (18), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-03-31 20:39:06,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2023-03-31 20:39:06,801 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 14 [2023-03-31 20:39:06,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 20:39:06,802 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2023-03-31 20:39:06,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 20:39:06,802 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2023-03-31 20:39:06,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-03-31 20:39:06,803 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 20:39:06,803 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 20:39:06,809 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-03-31 20:39:07,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 20:39:07,009 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 20:39:07,010 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 20:39:07,010 INFO L85 PathProgramCache]: Analyzing trace with hash 1112013315, now seen corresponding path program 2 times [2023-03-31 20:39:07,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 20:39:07,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869523351] [2023-03-31 20:39:07,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 20:39:07,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 20:39:07,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 20:39:07,097 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-03-31 20:39:07,098 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 20:39:07,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869523351] [2023-03-31 20:39:07,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869523351] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-31 20:39:07,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [47627647] [2023-03-31 20:39:07,098 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-03-31 20:39:07,098 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 20:39:07,098 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 20:39:07,102 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) [2023-03-31 20:39:07,105 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-03-31 20:39:07,153 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-03-31 20:39:07,154 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-03-31 20:39:07,155 INFO L262 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 3 conjunts are in the unsatisfiable core [2023-03-31 20:39:07,156 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-31 20:39:07,166 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-03-31 20:39:07,166 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-31 20:39:07,181 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-03-31 20:39:07,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [47627647] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-31 20:39:07,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1338218722] [2023-03-31 20:39:07,184 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2023-03-31 20:39:07,184 INFO L166 IcfgInterpreter]: Building call graph [2023-03-31 20:39:07,184 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-03-31 20:39:07,185 INFO L176 IcfgInterpreter]: Starting interpretation [2023-03-31 20:39:07,185 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-03-31 20:39:07,207 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 17 for LOIs [2023-03-31 20:39:07,311 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 33 for LOIs [2023-03-31 20:39:07,352 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2023-03-31 20:39:07,356 INFO L180 IcfgInterpreter]: Interpretation finished [2023-03-31 20:39:07,659 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '463#(and (exists ((v_main_~max~0_BEFORE_CALL_2 Int) (|v_main_~#a~0.base_BEFORE_CALL_2| Int) (|v_main_~#a~0.offset_BEFORE_CALL_2| Int) (v_main_~j~0_BEFORE_CALL_2 Int)) (and (or (and (= |v_main_~#a~0.offset_BEFORE_CALL_2| 0) (<= 0 |v_main_~#a~0.base_BEFORE_CALL_2|) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (<= 100000 v_main_~j~0_BEFORE_CALL_2) (= |#NULL.base| 0)) (and (= |v_main_~#a~0.offset_BEFORE_CALL_2| 0) (<= 0 |v_main_~#a~0.base_BEFORE_CALL_2|) (= v_main_~max~0_BEFORE_CALL_2 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (<= 100000 v_main_~j~0_BEFORE_CALL_2) (= |#NULL.base| 0))) (< v_main_~max~0_BEFORE_CALL_2 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_2|) |v_main_~#a~0.offset_BEFORE_CALL_2|)))) (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0))' at error location [2023-03-31 20:39:07,659 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-03-31 20:39:07,660 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-03-31 20:39:07,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2023-03-31 20:39:07,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606904380] [2023-03-31 20:39:07,660 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-03-31 20:39:07,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-03-31 20:39:07,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 20:39:07,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-03-31 20:39:07,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2023-03-31 20:39:07,662 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 20:39:07,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 20:39:07,680 INFO L93 Difference]: Finished difference Result 33 states and 38 transitions. [2023-03-31 20:39:07,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-03-31 20:39:07,681 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2023-03-31 20:39:07,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 20:39:07,681 INFO L225 Difference]: With dead ends: 33 [2023-03-31 20:39:07,681 INFO L226 Difference]: Without dead ends: 24 [2023-03-31 20:39:07,682 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2023-03-31 20:39:07,683 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-03-31 20:39:07,683 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 24 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-03-31 20:39:07,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2023-03-31 20:39:07,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2023-03-31 20:39:07,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 18 states have internal predecessors, (21), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-03-31 20:39:07,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2023-03-31 20:39:07,687 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 17 [2023-03-31 20:39:07,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 20:39:07,687 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2023-03-31 20:39:07,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 20:39:07,687 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2023-03-31 20:39:07,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-03-31 20:39:07,688 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 20:39:07,688 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 20:39:07,697 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-03-31 20:39:07,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-03-31 20:39:07,889 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 20:39:07,889 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 20:39:07,889 INFO L85 PathProgramCache]: Analyzing trace with hash 892747084, now seen corresponding path program 3 times [2023-03-31 20:39:07,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 20:39:07,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505625257] [2023-03-31 20:39:07,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 20:39:07,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 20:39:07,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 20:39:07,990 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-03-31 20:39:07,990 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 20:39:07,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505625257] [2023-03-31 20:39:07,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505625257] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-31 20:39:07,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1829331161] [2023-03-31 20:39:07,991 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-03-31 20:39:07,991 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 20:39:07,991 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 20:39:07,992 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) [2023-03-31 20:39:07,995 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-03-31 20:39:08,048 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-03-31 20:39:08,048 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-03-31 20:39:08,049 INFO L262 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 6 conjunts are in the unsatisfiable core [2023-03-31 20:39:08,050 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-31 20:39:08,064 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-03-31 20:39:08,064 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-31 20:39:08,112 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-03-31 20:39:08,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1829331161] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-31 20:39:08,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1232247059] [2023-03-31 20:39:08,114 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2023-03-31 20:39:08,114 INFO L166 IcfgInterpreter]: Building call graph [2023-03-31 20:39:08,114 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-03-31 20:39:08,115 INFO L176 IcfgInterpreter]: Starting interpretation [2023-03-31 20:39:08,115 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-03-31 20:39:08,133 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 17 for LOIs [2023-03-31 20:39:08,206 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 33 for LOIs [2023-03-31 20:39:08,278 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2023-03-31 20:39:08,283 INFO L180 IcfgInterpreter]: Interpretation finished [2023-03-31 20:39:08,600 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '698#(and (= |__VERIFIER_assert_#in~cond| 0) (exists ((|v_main_~#a~0.base_BEFORE_CALL_3| Int) (|v_main_~#a~0.offset_BEFORE_CALL_3| Int) (v_main_~j~0_BEFORE_CALL_3 Int) (v_main_~max~0_BEFORE_CALL_3 Int)) (and (or (and (<= 100000 v_main_~j~0_BEFORE_CALL_3) (<= 0 |v_main_~#a~0.base_BEFORE_CALL_3|) (= |v_main_~#a~0.offset_BEFORE_CALL_3| 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0)) (and (<= 100000 v_main_~j~0_BEFORE_CALL_3) (<= 0 |v_main_~#a~0.base_BEFORE_CALL_3|) (= v_main_~max~0_BEFORE_CALL_3 0) (= |v_main_~#a~0.offset_BEFORE_CALL_3| 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) (< v_main_~max~0_BEFORE_CALL_3 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_3|) |v_main_~#a~0.offset_BEFORE_CALL_3|)))) (= __VERIFIER_assert_~cond 0))' at error location [2023-03-31 20:39:08,600 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-03-31 20:39:08,601 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-03-31 20:39:08,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2023-03-31 20:39:08,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285259072] [2023-03-31 20:39:08,601 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-03-31 20:39:08,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-03-31 20:39:08,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 20:39:08,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-03-31 20:39:08,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=437, Unknown=0, NotChecked=0, Total=552 [2023-03-31 20:39:08,603 INFO L87 Difference]: Start difference. First operand 24 states and 26 transitions. Second operand has 13 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 13 states have internal predecessors, (21), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 20:39:08,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 20:39:08,632 INFO L93 Difference]: Finished difference Result 44 states and 53 transitions. [2023-03-31 20:39:08,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-03-31 20:39:08,633 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 13 states have internal predecessors, (21), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2023-03-31 20:39:08,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 20:39:08,633 INFO L225 Difference]: With dead ends: 44 [2023-03-31 20:39:08,634 INFO L226 Difference]: Without dead ends: 30 [2023-03-31 20:39:08,634 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=115, Invalid=437, Unknown=0, NotChecked=0, Total=552 [2023-03-31 20:39:08,635 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-03-31 20:39:08,635 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 45 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-03-31 20:39:08,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2023-03-31 20:39:08,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2023-03-31 20:39:08,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 24 states have (on average 1.125) internal successors, (27), 24 states have internal predecessors, (27), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-03-31 20:39:08,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 32 transitions. [2023-03-31 20:39:08,639 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 32 transitions. Word has length 20 [2023-03-31 20:39:08,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 20:39:08,640 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 32 transitions. [2023-03-31 20:39:08,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 13 states have internal predecessors, (21), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 20:39:08,640 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 32 transitions. [2023-03-31 20:39:08,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-03-31 20:39:08,640 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 20:39:08,641 INFO L195 NwaCegarLoop]: trace histogram [10, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 20:39:08,649 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-03-31 20:39:08,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 20:39:08,847 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 20:39:08,847 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 20:39:08,847 INFO L85 PathProgramCache]: Analyzing trace with hash 1914472620, now seen corresponding path program 4 times [2023-03-31 20:39:08,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 20:39:08,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122287705] [2023-03-31 20:39:08,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 20:39:08,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 20:39:08,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 20:39:09,058 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-03-31 20:39:09,058 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 20:39:09,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122287705] [2023-03-31 20:39:09,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122287705] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-31 20:39:09,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [689633966] [2023-03-31 20:39:09,059 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-03-31 20:39:09,059 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 20:39:09,059 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 20:39:09,060 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) [2023-03-31 20:39:09,064 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-03-31 20:39:09,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 20:39:09,132 INFO L262 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 12 conjunts are in the unsatisfiable core [2023-03-31 20:39:09,133 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-31 20:39:09,187 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-03-31 20:39:09,187 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-31 20:39:09,393 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-03-31 20:39:09,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [689633966] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-31 20:39:09,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1046529424] [2023-03-31 20:39:09,396 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2023-03-31 20:39:09,396 INFO L166 IcfgInterpreter]: Building call graph [2023-03-31 20:39:09,396 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-03-31 20:39:09,396 INFO L176 IcfgInterpreter]: Starting interpretation [2023-03-31 20:39:09,396 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-03-31 20:39:09,430 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 17 for LOIs [2023-03-31 20:39:09,500 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 33 for LOIs [2023-03-31 20:39:09,562 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2023-03-31 20:39:09,567 INFO L180 IcfgInterpreter]: Interpretation finished [2023-03-31 20:39:09,905 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1015#(and (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0) (exists ((|v_main_~#a~0.base_BEFORE_CALL_4| Int) (|v_main_~#a~0.offset_BEFORE_CALL_4| Int) (v_main_~j~0_BEFORE_CALL_4 Int) (v_main_~max~0_BEFORE_CALL_4 Int)) (and (or (and (= |v_main_~#a~0.offset_BEFORE_CALL_4| 0) (<= 0 |v_main_~#a~0.base_BEFORE_CALL_4|) (<= 100000 v_main_~j~0_BEFORE_CALL_4) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0)) (and (= |v_main_~#a~0.offset_BEFORE_CALL_4| 0) (<= 0 |v_main_~#a~0.base_BEFORE_CALL_4|) (<= 100000 v_main_~j~0_BEFORE_CALL_4) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0) (= v_main_~max~0_BEFORE_CALL_4 0))) (< v_main_~max~0_BEFORE_CALL_4 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_4|) |v_main_~#a~0.offset_BEFORE_CALL_4|)))))' at error location [2023-03-31 20:39:09,906 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-03-31 20:39:09,906 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-03-31 20:39:09,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2023-03-31 20:39:09,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295309418] [2023-03-31 20:39:09,906 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-03-31 20:39:09,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-03-31 20:39:09,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 20:39:09,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-03-31 20:39:09,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=337, Invalid=923, Unknown=0, NotChecked=0, Total=1260 [2023-03-31 20:39:09,909 INFO L87 Difference]: Start difference. First operand 30 states and 32 transitions. Second operand has 25 states, 25 states have (on average 1.32) internal successors, (33), 25 states have internal predecessors, (33), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 20:39:09,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 20:39:09,967 INFO L93 Difference]: Finished difference Result 56 states and 71 transitions. [2023-03-31 20:39:09,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-03-31 20:39:09,968 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.32) internal successors, (33), 25 states have internal predecessors, (33), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 26 [2023-03-31 20:39:09,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 20:39:09,971 INFO L225 Difference]: With dead ends: 56 [2023-03-31 20:39:09,971 INFO L226 Difference]: Without dead ends: 42 [2023-03-31 20:39:09,973 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 414 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=337, Invalid=923, Unknown=0, NotChecked=0, Total=1260 [2023-03-31 20:39:09,976 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-03-31 20:39:09,977 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 56 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-03-31 20:39:09,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2023-03-31 20:39:09,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2023-03-31 20:39:09,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 36 states have (on average 1.0833333333333333) internal successors, (39), 36 states have internal predecessors, (39), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-03-31 20:39:09,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 44 transitions. [2023-03-31 20:39:09,995 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 44 transitions. Word has length 26 [2023-03-31 20:39:09,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 20:39:09,996 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 44 transitions. [2023-03-31 20:39:09,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.32) internal successors, (33), 25 states have internal predecessors, (33), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 20:39:09,996 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 44 transitions. [2023-03-31 20:39:09,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-03-31 20:39:09,998 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 20:39:09,998 INFO L195 NwaCegarLoop]: trace histogram [22, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 20:39:10,007 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-03-31 20:39:10,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 20:39:10,205 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 20:39:10,205 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 20:39:10,205 INFO L85 PathProgramCache]: Analyzing trace with hash 472188780, now seen corresponding path program 5 times [2023-03-31 20:39:10,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 20:39:10,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737795538] [2023-03-31 20:39:10,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 20:39:10,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 20:39:10,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 20:39:10,838 INFO L134 CoverageAnalysis]: Checked inductivity of 263 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-03-31 20:39:10,838 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 20:39:10,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737795538] [2023-03-31 20:39:10,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737795538] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-31 20:39:10,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1363634764] [2023-03-31 20:39:10,839 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-03-31 20:39:10,839 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 20:39:10,839 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 20:39:10,841 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) [2023-03-31 20:39:10,845 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-03-31 20:39:10,924 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-03-31 20:39:10,925 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-03-31 20:39:10,926 INFO L262 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 6 conjunts are in the unsatisfiable core [2023-03-31 20:39:10,928 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-31 20:39:11,000 INFO L134 CoverageAnalysis]: Checked inductivity of 263 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2023-03-31 20:39:11,000 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-31 20:39:11,097 INFO L134 CoverageAnalysis]: Checked inductivity of 263 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2023-03-31 20:39:11,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1363634764] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-31 20:39:11,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [487290292] [2023-03-31 20:39:11,102 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2023-03-31 20:39:11,102 INFO L166 IcfgInterpreter]: Building call graph [2023-03-31 20:39:11,102 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-03-31 20:39:11,103 INFO L176 IcfgInterpreter]: Starting interpretation [2023-03-31 20:39:11,103 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-03-31 20:39:11,127 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 17 for LOIs [2023-03-31 20:39:11,214 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 33 for LOIs [2023-03-31 20:39:11,237 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2023-03-31 20:39:11,240 INFO L180 IcfgInterpreter]: Interpretation finished [2023-03-31 20:39:11,655 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1462#(and (exists ((|v_main_~#a~0.base_BEFORE_CALL_5| Int) (|v_main_~#a~0.offset_BEFORE_CALL_5| Int) (v_main_~j~0_BEFORE_CALL_5 Int) (v_main_~max~0_BEFORE_CALL_5 Int)) (and (< v_main_~max~0_BEFORE_CALL_5 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_5|) |v_main_~#a~0.offset_BEFORE_CALL_5|)) (or (and (<= 0 |v_main_~#a~0.base_BEFORE_CALL_5|) (<= 100000 v_main_~j~0_BEFORE_CALL_5) (= |v_main_~#a~0.offset_BEFORE_CALL_5| 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= v_main_~max~0_BEFORE_CALL_5 0) (= |#NULL.base| 0)) (and (<= 0 |v_main_~#a~0.base_BEFORE_CALL_5|) (<= 100000 v_main_~j~0_BEFORE_CALL_5) (= |v_main_~#a~0.offset_BEFORE_CALL_5| 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))))) (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0))' at error location [2023-03-31 20:39:11,656 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-03-31 20:39:11,656 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-03-31 20:39:11,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 7, 7] total 35 [2023-03-31 20:39:11,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612466172] [2023-03-31 20:39:11,656 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-03-31 20:39:11,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-03-31 20:39:11,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 20:39:11,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-03-31 20:39:11,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=402, Invalid=1668, Unknown=0, NotChecked=0, Total=2070 [2023-03-31 20:39:11,659 INFO L87 Difference]: Start difference. First operand 42 states and 44 transitions. Second operand has 35 states, 35 states have (on average 1.2857142857142858) internal successors, (45), 35 states have internal predecessors, (45), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 20:39:11,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 20:39:11,725 INFO L93 Difference]: Finished difference Result 63 states and 73 transitions. [2023-03-31 20:39:11,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-03-31 20:39:11,726 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 1.2857142857142858) internal successors, (45), 35 states have internal predecessors, (45), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 38 [2023-03-31 20:39:11,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 20:39:11,727 INFO L225 Difference]: With dead ends: 63 [2023-03-31 20:39:11,727 INFO L226 Difference]: Without dead ends: 49 [2023-03-31 20:39:11,728 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 616 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=402, Invalid=1668, Unknown=0, NotChecked=0, Total=2070 [2023-03-31 20:39:11,728 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-03-31 20:39:11,729 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 70 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-03-31 20:39:11,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2023-03-31 20:39:11,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2023-03-31 20:39:11,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 43 states have (on average 1.069767441860465) internal successors, (46), 43 states have internal predecessors, (46), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-03-31 20:39:11,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 51 transitions. [2023-03-31 20:39:11,734 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 51 transitions. Word has length 38 [2023-03-31 20:39:11,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 20:39:11,734 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 51 transitions. [2023-03-31 20:39:11,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 1.2857142857142858) internal successors, (45), 35 states have internal predecessors, (45), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 20:39:11,735 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 51 transitions. [2023-03-31 20:39:11,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-03-31 20:39:11,735 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 20:39:11,736 INFO L195 NwaCegarLoop]: trace histogram [23, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 20:39:11,744 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-03-31 20:39:11,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 20:39:11,942 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 20:39:11,942 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 20:39:11,942 INFO L85 PathProgramCache]: Analyzing trace with hash -486008811, now seen corresponding path program 6 times [2023-03-31 20:39:11,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 20:39:11,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878725914] [2023-03-31 20:39:11,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 20:39:11,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 20:39:11,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 20:39:12,577 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-03-31 20:39:12,577 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 20:39:12,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878725914] [2023-03-31 20:39:12,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878725914] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-31 20:39:12,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1386519714] [2023-03-31 20:39:12,578 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-03-31 20:39:12,578 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 20:39:12,578 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 20:39:12,581 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-31 20:39:12,584 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-03-31 20:39:12,693 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-03-31 20:39:12,697 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-03-31 20:39:12,700 INFO L262 TraceCheckSpWp]: Trace formula consists of 319 conjuncts, 25 conjunts are in the unsatisfiable core [2023-03-31 20:39:12,704 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-31 20:39:12,753 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-03-31 20:39:12,754 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-31 20:39:13,438 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-03-31 20:39:13,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1386519714] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-31 20:39:13,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [730347069] [2023-03-31 20:39:13,441 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2023-03-31 20:39:13,441 INFO L166 IcfgInterpreter]: Building call graph [2023-03-31 20:39:13,441 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-03-31 20:39:13,441 INFO L176 IcfgInterpreter]: Starting interpretation [2023-03-31 20:39:13,441 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-03-31 20:39:13,467 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 17 for LOIs [2023-03-31 20:39:13,525 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 33 for LOIs [2023-03-31 20:39:13,544 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2023-03-31 20:39:13,550 INFO L180 IcfgInterpreter]: Interpretation finished [2023-03-31 20:39:13,929 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1995#(and (exists ((|v_main_~#a~0.offset_BEFORE_CALL_6| Int) (|v_main_~#a~0.base_BEFORE_CALL_6| Int) (v_main_~j~0_BEFORE_CALL_6 Int) (v_main_~max~0_BEFORE_CALL_6 Int)) (and (or (and (= |v_main_~#a~0.offset_BEFORE_CALL_6| 0) (<= 0 |v_main_~#a~0.base_BEFORE_CALL_6|) (<= 100000 v_main_~j~0_BEFORE_CALL_6) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0)) (and (= v_main_~max~0_BEFORE_CALL_6 0) (= |v_main_~#a~0.offset_BEFORE_CALL_6| 0) (<= 0 |v_main_~#a~0.base_BEFORE_CALL_6|) (<= 100000 v_main_~j~0_BEFORE_CALL_6) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) (< v_main_~max~0_BEFORE_CALL_6 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_6|) |v_main_~#a~0.offset_BEFORE_CALL_6|)))) (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0))' at error location [2023-03-31 20:39:13,929 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-03-31 20:39:13,929 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-03-31 20:39:13,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 26] total 51 [2023-03-31 20:39:13,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480976972] [2023-03-31 20:39:13,932 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-03-31 20:39:13,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2023-03-31 20:39:13,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 20:39:13,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2023-03-31 20:39:13,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1312, Invalid=2470, Unknown=0, NotChecked=0, Total=3782 [2023-03-31 20:39:13,937 INFO L87 Difference]: Start difference. First operand 49 states and 51 transitions. Second operand has 51 states, 51 states have (on average 1.1568627450980393) internal successors, (59), 51 states have internal predecessors, (59), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 20:39:14,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 20:39:14,011 INFO L93 Difference]: Finished difference Result 94 states and 122 transitions. [2023-03-31 20:39:14,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2023-03-31 20:39:14,012 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 1.1568627450980393) internal successors, (59), 51 states have internal predecessors, (59), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 45 [2023-03-31 20:39:14,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 20:39:14,015 INFO L225 Difference]: With dead ends: 94 [2023-03-31 20:39:14,015 INFO L226 Difference]: Without dead ends: 74 [2023-03-31 20:39:14,017 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 895 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1312, Invalid=2470, Unknown=0, NotChecked=0, Total=3782 [2023-03-31 20:39:14,018 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-03-31 20:39:14,018 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 45 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-03-31 20:39:14,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2023-03-31 20:39:14,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2023-03-31 20:39:14,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 68 states have (on average 1.0441176470588236) internal successors, (71), 68 states have internal predecessors, (71), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-03-31 20:39:14,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 76 transitions. [2023-03-31 20:39:14,040 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 76 transitions. Word has length 45 [2023-03-31 20:39:14,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 20:39:14,040 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 76 transitions. [2023-03-31 20:39:14,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 1.1568627450980393) internal successors, (59), 51 states have internal predecessors, (59), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 20:39:14,040 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 76 transitions. [2023-03-31 20:39:14,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-03-31 20:39:14,044 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 20:39:14,044 INFO L195 NwaCegarLoop]: trace histogram [48, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 20:39:14,053 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-03-31 20:39:14,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 20:39:14,245 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 20:39:14,245 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 20:39:14,245 INFO L85 PathProgramCache]: Analyzing trace with hash -853179732, now seen corresponding path program 7 times [2023-03-31 20:39:14,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 20:39:14,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164125692] [2023-03-31 20:39:14,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 20:39:14,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 20:39:14,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 20:39:16,012 INFO L134 CoverageAnalysis]: Checked inductivity of 1231 backedges. 0 proven. 1176 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-03-31 20:39:16,012 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 20:39:16,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164125692] [2023-03-31 20:39:16,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164125692] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-31 20:39:16,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1927997606] [2023-03-31 20:39:16,012 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-03-31 20:39:16,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 20:39:16,013 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 20:39:16,014 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-31 20:39:16,023 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-03-31 20:39:16,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 20:39:16,182 INFO L262 TraceCheckSpWp]: Trace formula consists of 544 conjuncts, 50 conjunts are in the unsatisfiable core [2023-03-31 20:39:16,185 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-31 20:39:16,267 INFO L134 CoverageAnalysis]: Checked inductivity of 1231 backedges. 0 proven. 1176 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-03-31 20:39:16,268 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-31 20:39:18,731 INFO L134 CoverageAnalysis]: Checked inductivity of 1231 backedges. 0 proven. 1176 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-03-31 20:39:18,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1927997606] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-31 20:39:18,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [437784995] [2023-03-31 20:39:18,736 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2023-03-31 20:39:18,736 INFO L166 IcfgInterpreter]: Building call graph [2023-03-31 20:39:18,737 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-03-31 20:39:18,737 INFO L176 IcfgInterpreter]: Starting interpretation [2023-03-31 20:39:18,737 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-03-31 20:39:18,753 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 17 for LOIs [2023-03-31 20:39:18,792 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 33 for LOIs [2023-03-31 20:39:18,814 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2023-03-31 20:39:18,817 INFO L180 IcfgInterpreter]: Interpretation finished [2023-03-31 20:39:19,286 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2840#(and (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0) (exists ((|v_main_~#a~0.offset_BEFORE_CALL_7| Int) (|v_main_~#a~0.base_BEFORE_CALL_7| Int) (v_main_~max~0_BEFORE_CALL_7 Int) (v_main_~j~0_BEFORE_CALL_7 Int)) (and (or (and (<= 0 |v_main_~#a~0.base_BEFORE_CALL_7|) (= |v_main_~#a~0.offset_BEFORE_CALL_7| 0) (= v_main_~max~0_BEFORE_CALL_7 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0) (<= 100000 v_main_~j~0_BEFORE_CALL_7)) (and (<= 0 |v_main_~#a~0.base_BEFORE_CALL_7|) (= |v_main_~#a~0.offset_BEFORE_CALL_7| 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0) (<= 100000 v_main_~j~0_BEFORE_CALL_7))) (< v_main_~max~0_BEFORE_CALL_7 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_7|) |v_main_~#a~0.offset_BEFORE_CALL_7|)))))' at error location [2023-03-31 20:39:19,287 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-03-31 20:39:19,287 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-03-31 20:39:19,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51, 51] total 101 [2023-03-31 20:39:19,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970748810] [2023-03-31 20:39:19,287 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-03-31 20:39:19,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 101 states [2023-03-31 20:39:19,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 20:39:19,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2023-03-31 20:39:19,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5087, Invalid=7345, Unknown=0, NotChecked=0, Total=12432 [2023-03-31 20:39:19,293 INFO L87 Difference]: Start difference. First operand 74 states and 76 transitions. Second operand has 101 states, 101 states have (on average 1.0792079207920793) internal successors, (109), 101 states have internal predecessors, (109), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 20:39:19,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 20:39:19,431 INFO L93 Difference]: Finished difference Result 144 states and 197 transitions. [2023-03-31 20:39:19,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2023-03-31 20:39:19,431 INFO L78 Accepts]: Start accepts. Automaton has has 101 states, 101 states have (on average 1.0792079207920793) internal successors, (109), 101 states have internal predecessors, (109), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 70 [2023-03-31 20:39:19,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 20:39:19,433 INFO L225 Difference]: With dead ends: 144 [2023-03-31 20:39:19,433 INFO L226 Difference]: Without dead ends: 124 [2023-03-31 20:39:19,436 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1820 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=5087, Invalid=7345, Unknown=0, NotChecked=0, Total=12432 [2023-03-31 20:39:19,439 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-03-31 20:39:19,439 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 56 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-03-31 20:39:19,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2023-03-31 20:39:19,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2023-03-31 20:39:19,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 118 states have (on average 1.0254237288135593) internal successors, (121), 118 states have internal predecessors, (121), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-03-31 20:39:19,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 126 transitions. [2023-03-31 20:39:19,458 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 126 transitions. Word has length 70 [2023-03-31 20:39:19,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 20:39:19,460 INFO L495 AbstractCegarLoop]: Abstraction has 124 states and 126 transitions. [2023-03-31 20:39:19,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 101 states, 101 states have (on average 1.0792079207920793) internal successors, (109), 101 states have internal predecessors, (109), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 20:39:19,461 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 126 transitions. [2023-03-31 20:39:19,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-03-31 20:39:19,465 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 20:39:19,465 INFO L195 NwaCegarLoop]: trace histogram [98, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 20:39:19,475 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-03-31 20:39:19,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 20:39:19,672 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 20:39:19,672 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 20:39:19,672 INFO L85 PathProgramCache]: Analyzing trace with hash -612313396, now seen corresponding path program 8 times [2023-03-31 20:39:19,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 20:39:19,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947340779] [2023-03-31 20:39:19,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 20:39:19,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 20:39:19,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 20:39:25,329 INFO L134 CoverageAnalysis]: Checked inductivity of 4906 backedges. 0 proven. 4851 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-03-31 20:39:25,330 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 20:39:25,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947340779] [2023-03-31 20:39:25,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947340779] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-31 20:39:25,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [507524265] [2023-03-31 20:39:25,330 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-03-31 20:39:25,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 20:39:25,330 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 20:39:25,331 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-31 20:39:25,333 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-03-31 20:39:25,528 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-03-31 20:39:25,528 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-03-31 20:39:25,530 INFO L262 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 12 conjunts are in the unsatisfiable core [2023-03-31 20:39:25,533 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-31 20:39:25,936 INFO L134 CoverageAnalysis]: Checked inductivity of 4906 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 4851 trivial. 0 not checked. [2023-03-31 20:39:25,936 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-31 20:39:26,434 INFO L134 CoverageAnalysis]: Checked inductivity of 4906 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 4851 trivial. 0 not checked. [2023-03-31 20:39:26,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [507524265] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-31 20:39:26,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [643238797] [2023-03-31 20:39:26,436 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2023-03-31 20:39:26,436 INFO L166 IcfgInterpreter]: Building call graph [2023-03-31 20:39:26,436 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-03-31 20:39:26,436 INFO L176 IcfgInterpreter]: Starting interpretation [2023-03-31 20:39:26,436 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-03-31 20:39:26,454 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 17 for LOIs [2023-03-31 20:39:26,494 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 33 for LOIs [2023-03-31 20:39:26,511 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2023-03-31 20:39:26,513 INFO L180 IcfgInterpreter]: Interpretation finished [2023-03-31 20:39:27,373 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4207#(and (exists ((|v_main_~#a~0.base_BEFORE_CALL_8| Int) (v_main_~j~0_BEFORE_CALL_8 Int) (v_main_~max~0_BEFORE_CALL_8 Int) (|v_main_~#a~0.offset_BEFORE_CALL_8| Int)) (and (or (and (<= 100000 v_main_~j~0_BEFORE_CALL_8) (<= 0 |v_main_~#a~0.base_BEFORE_CALL_8|) (= v_main_~max~0_BEFORE_CALL_8 0) (= |#NULL.offset| 0) (= |v_main_~#a~0.offset_BEFORE_CALL_8| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0)) (and (<= 100000 v_main_~j~0_BEFORE_CALL_8) (<= 0 |v_main_~#a~0.base_BEFORE_CALL_8|) (= |#NULL.offset| 0) (= |v_main_~#a~0.offset_BEFORE_CALL_8| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) (< v_main_~max~0_BEFORE_CALL_8 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_8|) |v_main_~#a~0.offset_BEFORE_CALL_8|)))) (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0))' at error location [2023-03-31 20:39:27,373 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-03-31 20:39:27,373 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-03-31 20:39:27,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [101, 13, 13] total 123 [2023-03-31 20:39:27,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652194770] [2023-03-31 20:39:27,374 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-03-31 20:39:27,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 123 states [2023-03-31 20:39:27,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 20:39:27,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 123 interpolants. [2023-03-31 20:39:27,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5362, Invalid=12460, Unknown=0, NotChecked=0, Total=17822 [2023-03-31 20:39:27,380 INFO L87 Difference]: Start difference. First operand 124 states and 126 transitions. Second operand has 123 states, 123 states have (on average 1.08130081300813) internal successors, (133), 123 states have internal predecessors, (133), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 20:39:27,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 20:39:27,522 INFO L93 Difference]: Finished difference Result 157 states and 173 transitions. [2023-03-31 20:39:27,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2023-03-31 20:39:27,523 INFO L78 Accepts]: Start accepts. Automaton has has 123 states, 123 states have (on average 1.08130081300813) internal successors, (133), 123 states have internal predecessors, (133), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 120 [2023-03-31 20:39:27,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 20:39:27,524 INFO L225 Difference]: With dead ends: 157 [2023-03-31 20:39:27,524 INFO L226 Difference]: Without dead ends: 137 [2023-03-31 20:39:27,526 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 460 GetRequests, 328 SyntacticMatches, 0 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3586 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=5362, Invalid=12460, Unknown=0, NotChecked=0, Total=17822 [2023-03-31 20:39:27,527 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-03-31 20:39:27,527 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 136 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-03-31 20:39:27,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2023-03-31 20:39:27,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2023-03-31 20:39:27,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 131 states have (on average 1.0229007633587786) internal successors, (134), 131 states have internal predecessors, (134), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-03-31 20:39:27,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 139 transitions. [2023-03-31 20:39:27,534 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 139 transitions. Word has length 120 [2023-03-31 20:39:27,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 20:39:27,534 INFO L495 AbstractCegarLoop]: Abstraction has 137 states and 139 transitions. [2023-03-31 20:39:27,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 123 states, 123 states have (on average 1.08130081300813) internal successors, (133), 123 states have internal predecessors, (133), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 20:39:27,535 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 139 transitions. [2023-03-31 20:39:27,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-03-31 20:39:27,536 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 20:39:27,536 INFO L195 NwaCegarLoop]: trace histogram [99, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 20:39:27,547 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-03-31 20:39:27,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-03-31 20:39:27,743 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 20:39:27,743 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 20:39:27,743 INFO L85 PathProgramCache]: Analyzing trace with hash 1852352789, now seen corresponding path program 9 times [2023-03-31 20:39:27,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 20:39:27,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416901852] [2023-03-31 20:39:27,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 20:39:27,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 20:39:27,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 20:39:33,257 INFO L134 CoverageAnalysis]: Checked inductivity of 5203 backedges. 0 proven. 4950 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2023-03-31 20:39:33,257 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 20:39:33,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416901852] [2023-03-31 20:39:33,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416901852] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-31 20:39:33,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1282970996] [2023-03-31 20:39:33,257 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-03-31 20:39:33,257 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 20:39:33,257 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 20:39:33,258 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-31 20:39:33,260 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-03-31 20:39:33,529 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-03-31 20:39:33,529 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-03-31 20:39:33,535 INFO L262 TraceCheckSpWp]: Trace formula consists of 1051 conjuncts, 101 conjunts are in the unsatisfiable core [2023-03-31 20:39:33,540 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-31 20:39:33,717 INFO L134 CoverageAnalysis]: Checked inductivity of 5203 backedges. 0 proven. 4950 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2023-03-31 20:39:33,717 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-31 20:39:43,146 INFO L134 CoverageAnalysis]: Checked inductivity of 5203 backedges. 0 proven. 4950 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2023-03-31 20:39:43,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1282970996] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-31 20:39:43,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [39028055] [2023-03-31 20:39:43,148 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2023-03-31 20:39:43,148 INFO L166 IcfgInterpreter]: Building call graph [2023-03-31 20:39:43,148 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-03-31 20:39:43,148 INFO L176 IcfgInterpreter]: Starting interpretation [2023-03-31 20:39:43,148 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-03-31 20:39:43,167 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 17 for LOIs [2023-03-31 20:39:43,206 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 33 for LOIs [2023-03-31 20:39:43,224 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2023-03-31 20:39:43,226 INFO L180 IcfgInterpreter]: Interpretation finished [2023-03-31 20:39:43,958 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5784#(and (exists ((|v_main_~#a~0.base_BEFORE_CALL_9| Int) (v_main_~max~0_BEFORE_CALL_9 Int) (v_main_~j~0_BEFORE_CALL_9 Int) (|v_main_~#a~0.offset_BEFORE_CALL_9| Int)) (and (< v_main_~max~0_BEFORE_CALL_9 (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_9|) |v_main_~#a~0.offset_BEFORE_CALL_9|)) (or (and (<= 100000 v_main_~j~0_BEFORE_CALL_9) (= |v_main_~#a~0.offset_BEFORE_CALL_9| 0) (= |#NULL.offset| 0) (<= 0 |v_main_~#a~0.base_BEFORE_CALL_9|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0)) (and (<= 100000 v_main_~j~0_BEFORE_CALL_9) (= |v_main_~#a~0.offset_BEFORE_CALL_9| 0) (= |#NULL.offset| 0) (= v_main_~max~0_BEFORE_CALL_9 0) (<= 0 |v_main_~#a~0.base_BEFORE_CALL_9|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))))) (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0))' at error location [2023-03-31 20:39:43,958 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-03-31 20:39:43,958 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-03-31 20:39:43,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [102, 102, 102] total 203 [2023-03-31 20:39:43,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802911830] [2023-03-31 20:39:43,958 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-03-31 20:39:43,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 203 states [2023-03-31 20:39:43,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 20:39:43,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 203 interpolants. [2023-03-31 20:39:43,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20540, Invalid=25042, Unknown=0, NotChecked=0, Total=45582 [2023-03-31 20:39:43,969 INFO L87 Difference]: Start difference. First operand 137 states and 139 transitions. Second operand has 203 states, 203 states have (on average 1.0394088669950738) internal successors, (211), 203 states have internal predecessors, (211), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 20:39:44,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 20:39:44,298 INFO L93 Difference]: Finished difference Result 270 states and 374 transitions. [2023-03-31 20:39:44,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 202 states. [2023-03-31 20:39:44,298 INFO L78 Accepts]: Start accepts. Automaton has has 203 states, 203 states have (on average 1.0394088669950738) internal successors, (211), 203 states have internal predecessors, (211), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 133 [2023-03-31 20:39:44,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 20:39:44,299 INFO L225 Difference]: With dead ends: 270 [2023-03-31 20:39:44,299 INFO L226 Difference]: Without dead ends: 238 [2023-03-31 20:39:44,302 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 500 GetRequests, 288 SyntacticMatches, 0 SemanticMatches, 212 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3707 ImplicationChecksByTransitivity, 13.2s TimeCoverageRelationStatistics Valid=20540, Invalid=25042, Unknown=0, NotChecked=0, Total=45582 [2023-03-31 20:39:44,303 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-03-31 20:39:44,303 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 100 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-03-31 20:39:44,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2023-03-31 20:39:44,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 238. [2023-03-31 20:39:44,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 232 states have (on average 1.0129310344827587) internal successors, (235), 232 states have internal predecessors, (235), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-03-31 20:39:44,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 240 transitions. [2023-03-31 20:39:44,312 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 240 transitions. Word has length 133 [2023-03-31 20:39:44,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 20:39:44,312 INFO L495 AbstractCegarLoop]: Abstraction has 238 states and 240 transitions. [2023-03-31 20:39:44,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 203 states, 203 states have (on average 1.0394088669950738) internal successors, (211), 203 states have internal predecessors, (211), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 20:39:44,312 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 240 transitions. [2023-03-31 20:39:44,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2023-03-31 20:39:44,314 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 20:39:44,315 INFO L195 NwaCegarLoop]: trace histogram [200, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 20:39:44,327 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-03-31 20:39:44,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 20:39:44,522 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 20:39:44,523 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 20:39:44,523 INFO L85 PathProgramCache]: Analyzing trace with hash -528348820, now seen corresponding path program 10 times [2023-03-31 20:39:44,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 20:39:44,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246585262] [2023-03-31 20:39:44,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 20:39:44,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 20:39:44,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat