/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml --sifa.abstract.domain OctagonDomain -i ../sv-benchmarks/c/loop-lit/gj2007.c.i.p+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-02 22:10:39,109 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-02 22:10:39,111 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-02 22:10:39,141 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-02 22:10:39,141 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-02 22:10:39,143 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-02 22:10:39,146 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-02 22:10:39,148 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-02 22:10:39,149 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-02 22:10:39,153 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-02 22:10:39,154 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-02 22:10:39,156 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-02 22:10:39,156 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-02 22:10:39,158 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-02 22:10:39,159 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-02 22:10:39,159 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-02 22:10:39,160 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-02 22:10:39,161 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-02 22:10:39,162 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-02 22:10:39,166 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-02 22:10:39,166 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-02 22:10:39,167 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-02 22:10:39,168 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-02 22:10:39,169 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-02 22:10:39,175 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-02 22:10:39,175 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-02 22:10:39,175 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-02 22:10:39,176 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-02 22:10:39,176 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-02 22:10:39,177 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-02 22:10:39,177 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-02 22:10:39,177 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-02 22:10:39,178 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-02 22:10:39,179 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-02 22:10:39,179 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-02 22:10:39,179 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-02 22:10:39,180 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-02 22:10:39,180 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-02 22:10:39,180 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-02 22:10:39,180 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-02 22:10:39,181 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-02 22:10:39,182 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf [2023-04-02 22:10:39,204 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-02 22:10:39,204 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-02 22:10:39,205 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-02 22:10:39,205 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-02 22:10:39,205 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-02 22:10:39,206 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-02 22:10:39,206 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-02 22:10:39,206 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-02 22:10:39,206 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-02 22:10:39,206 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-02 22:10:39,206 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-02 22:10:39,207 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-02 22:10:39,207 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-02 22:10:39,207 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-02 22:10:39,207 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-02 22:10:39,207 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-02 22:10:39,207 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-02 22:10:39,207 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-02 22:10:39,208 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-02 22:10:39,208 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-02 22:10:39,208 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-02 22:10:39,208 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-02 22:10:39,208 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-02 22:10:39,208 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-02 22:10:39,208 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-02 22:10:39,209 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-02 22:10:39,209 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-02 22:10:39,209 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-02 22:10:39,209 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-02 22:10:39,209 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-02 22:10:39,209 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-02 22:10:39,209 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-02 22:10:39,209 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 22:10:39,209 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-02 22:10:39,210 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-02 22:10:39,210 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-02 22:10:39,210 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-02 22:10:39,210 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-02 22:10:39,210 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-02 22:10:39,210 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-02 22:10:39,210 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-02 22:10:39,210 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> OctagonDomain [2023-04-02 22:10:39,369 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-02 22:10:39,388 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-02 22:10:39,390 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-02 22:10:39,391 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-02 22:10:39,394 INFO L275 PluginConnector]: CDTParser initialized [2023-04-02 22:10:39,395 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-lit/gj2007.c.i.p+lhb-reducer.c [2023-04-02 22:10:40,517 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-02 22:10:40,697 INFO L351 CDTParser]: Found 1 translation units. [2023-04-02 22:10:40,697 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-lit/gj2007.c.i.p+lhb-reducer.c [2023-04-02 22:10:40,724 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/95fe14b1d/2fab8ada87364837b0c40bcac30beb33/FLAG32890ef3b [2023-04-02 22:10:40,739 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/95fe14b1d/2fab8ada87364837b0c40bcac30beb33 [2023-04-02 22:10:40,741 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-02 22:10:40,742 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-02 22:10:40,745 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-02 22:10:40,745 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-02 22:10:40,747 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-02 22:10:40,747 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 10:10:40" (1/1) ... [2023-04-02 22:10:40,748 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27808ea8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 10:10:40, skipping insertion in model container [2023-04-02 22:10:40,749 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 10:10:40" (1/1) ... [2023-04-02 22:10:40,753 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-02 22:10:40,771 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-02 22:10:40,906 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/loop-lit/gj2007.c.i.p+lhb-reducer.c[1613,1626] [2023-04-02 22:10:40,919 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 22:10:40,929 INFO L203 MainTranslator]: Completed pre-run [2023-04-02 22:10:40,953 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/loop-lit/gj2007.c.i.p+lhb-reducer.c[1613,1626] [2023-04-02 22:10:40,956 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 22:10:40,970 INFO L208 MainTranslator]: Completed translation [2023-04-02 22:10:40,971 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 10:10:40 WrapperNode [2023-04-02 22:10:40,971 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-02 22:10:40,971 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-02 22:10:40,972 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-02 22:10:40,972 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-02 22:10:40,979 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 10:10:40" (1/1) ... [2023-04-02 22:10:40,979 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 10:10:40" (1/1) ... [2023-04-02 22:10:40,984 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 10:10:40" (1/1) ... [2023-04-02 22:10:40,984 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 10:10:40" (1/1) ... [2023-04-02 22:10:40,995 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 10:10:40" (1/1) ... [2023-04-02 22:10:40,999 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 10:10:40" (1/1) ... [2023-04-02 22:10:41,002 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 10:10:40" (1/1) ... [2023-04-02 22:10:41,003 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 10:10:40" (1/1) ... [2023-04-02 22:10:41,004 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-02 22:10:41,005 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-02 22:10:41,005 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-02 22:10:41,005 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-02 22:10:41,006 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 10:10:40" (1/1) ... [2023-04-02 22:10:41,013 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 22:10:41,021 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 22:10:41,059 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-04-02 22:10:41,073 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-04-02 22:10:41,084 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-02 22:10:41,084 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-02 22:10:41,084 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-02 22:10:41,084 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-02 22:10:41,084 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-02 22:10:41,084 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-02 22:10:41,084 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-02 22:10:41,085 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-02 22:10:41,085 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-02 22:10:41,085 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-02 22:10:41,085 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-04-02 22:10:41,085 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-02 22:10:41,085 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-02 22:10:41,085 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-02 22:10:41,085 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-02 22:10:41,085 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-02 22:10:41,085 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-02 22:10:41,085 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-02 22:10:41,086 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-02 22:10:41,130 INFO L236 CfgBuilder]: Building ICFG [2023-04-02 22:10:41,132 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-02 22:10:41,279 INFO L277 CfgBuilder]: Performing block encoding [2023-04-02 22:10:41,366 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-02 22:10:41,366 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-04-02 22:10:41,368 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 10:10:41 BoogieIcfgContainer [2023-04-02 22:10:41,368 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-02 22:10:41,369 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-02 22:10:41,369 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-02 22:10:41,373 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-02 22:10:41,373 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.04 10:10:40" (1/3) ... [2023-04-02 22:10:41,373 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@706d1bcc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 10:10:41, skipping insertion in model container [2023-04-02 22:10:41,374 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 10:10:40" (2/3) ... [2023-04-02 22:10:41,374 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@706d1bcc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 10:10:41, skipping insertion in model container [2023-04-02 22:10:41,374 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 10:10:41" (3/3) ... [2023-04-02 22:10:41,375 INFO L112 eAbstractionObserver]: Analyzing ICFG gj2007.c.i.p+lhb-reducer.c [2023-04-02 22:10:41,402 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-02 22:10:41,402 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-02 22:10:41,447 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-02 22:10:41,452 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;@6d315147, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-02 22:10:41,452 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-02 22:10:41,458 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 16 states have (on average 1.75) internal successors, (28), 17 states have internal predecessors, (28), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-02 22:10:41,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-04-02 22:10:41,464 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 22:10:41,464 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 22:10:41,465 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 22:10:41,472 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 22:10:41,472 INFO L85 PathProgramCache]: Analyzing trace with hash -164184841, now seen corresponding path program 1 times [2023-04-02 22:10:41,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 22:10:41,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745000272] [2023-04-02 22:10:41,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 22:10:41,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 22:10:41,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 22:10:41,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 22:10:41,979 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 22:10:41,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745000272] [2023-04-02 22:10:41,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745000272] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 22:10:41,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 22:10:41,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-02 22:10:41,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518013421] [2023-04-02 22:10:41,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 22:10:41,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-02 22:10:41,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 22:10:42,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-02 22:10:42,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2023-04-02 22:10:42,004 INFO L87 Difference]: Start difference. First operand has 22 states, 16 states have (on average 1.75) internal successors, (28), 17 states have internal predecessors, (28), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 12 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 12 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 22:10:42,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 22:10:42,054 INFO L93 Difference]: Finished difference Result 30 states and 41 transitions. [2023-04-02 22:10:42,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-04-02 22:10:42,056 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 12 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2023-04-02 22:10:42,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 22:10:42,060 INFO L225 Difference]: With dead ends: 30 [2023-04-02 22:10:42,060 INFO L226 Difference]: Without dead ends: 19 [2023-04-02 22:10:42,062 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2023-04-02 22:10:42,065 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 0 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-02 22:10:42,065 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 47 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-02 22:10:42,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2023-04-02 22:10:42,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2023-04-02 22:10:42,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 15 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 22:10:42,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2023-04-02 22:10:42,097 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 17 [2023-04-02 22:10:42,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 22:10:42,098 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2023-04-02 22:10:42,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 12 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 22:10:42,099 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2023-04-02 22:10:42,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-04-02 22:10:42,100 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 22:10:42,100 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 22:10:42,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-02 22:10:42,101 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 22:10:42,101 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 22:10:42,102 INFO L85 PathProgramCache]: Analyzing trace with hash -793097305, now seen corresponding path program 1 times [2023-04-02 22:10:42,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 22:10:42,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439216512] [2023-04-02 22:10:42,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 22:10:42,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 22:10:42,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 22:10:42,406 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 22:10:42,406 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 22:10:42,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439216512] [2023-04-02 22:10:42,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439216512] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 22:10:42,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [572634484] [2023-04-02 22:10:42,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 22:10:42,408 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 22:10:42,408 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 22:10:42,413 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 22:10:42,438 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-04-02 22:10:42,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 22:10:42,491 INFO L262 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 12 conjunts are in the unsatisfiable core [2023-04-02 22:10:42,496 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 22:10:42,564 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 22:10:42,564 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 22:10:42,905 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 22:10:42,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [572634484] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 22:10:42,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1092430471] [2023-04-02 22:10:42,933 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2023-04-02 22:10:42,933 INFO L166 IcfgInterpreter]: Building call graph [2023-04-02 22:10:42,936 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-02 22:10:42,939 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-02 22:10:42,940 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-02 22:10:43,004 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 15 for LOIs [2023-04-02 22:10:43,116 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 13 for LOIs [2023-04-02 22:10:43,142 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-02 22:10:43,460 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '244#(and (= ~__return_720~0 0) (<= 1 |#StackHeapBarrier|) (<= 100 main_~main__x~0) (not (= 100 main_~main__y~0)) (= |old(~__return_720~0)| 0) (= main_~__VERIFIER_assert__cond~0 0) (= main_~__tmp_1~0 0) (= |#NULL.offset| 0) (= ~__return_main~0 0) (= |#NULL.base| 0))' at error location [2023-04-02 22:10:43,460 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-02 22:10:43,461 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 22:10:43,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2023-04-02 22:10:43,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185074593] [2023-04-02 22:10:43,461 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 22:10:43,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-04-02 22:10:43,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 22:10:43,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-04-02 22:10:43,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=518, Invalid=1042, Unknown=0, NotChecked=0, Total=1560 [2023-04-02 22:10:43,464 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand has 25 states, 25 states have (on average 1.16) internal successors, (29), 25 states have internal predecessors, (29), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 22:10:43,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 22:10:43,505 INFO L93 Difference]: Finished difference Result 34 states and 45 transitions. [2023-04-02 22:10:43,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-04-02 22:10:43,505 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.16) internal successors, (29), 25 states have internal predecessors, (29), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2023-04-02 22:10:43,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 22:10:43,506 INFO L225 Difference]: With dead ends: 34 [2023-04-02 22:10:43,506 INFO L226 Difference]: Without dead ends: 31 [2023-04-02 22:10:43,507 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 662 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=518, Invalid=1042, Unknown=0, NotChecked=0, Total=1560 [2023-04-02 22:10:43,507 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 0 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-02 22:10:43,508 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 27 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-02 22:10:43,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2023-04-02 22:10:43,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2023-04-02 22:10:43,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 27 states have (on average 1.037037037037037) internal successors, (28), 27 states have internal predecessors, (28), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 22:10:43,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions. [2023-04-02 22:10:43,511 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 18 [2023-04-02 22:10:43,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 22:10:43,512 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 31 transitions. [2023-04-02 22:10:43,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.16) internal successors, (29), 25 states have internal predecessors, (29), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 22:10:43,512 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions. [2023-04-02 22:10:43,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-04-02 22:10:43,512 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 22:10:43,512 INFO L195 NwaCegarLoop]: trace histogram [13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 22:10:43,525 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-04-02 22:10:43,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 22:10:43,717 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 22:10:43,718 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 22:10:43,718 INFO L85 PathProgramCache]: Analyzing trace with hash 1700415399, now seen corresponding path program 2 times [2023-04-02 22:10:43,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 22:10:43,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204045618] [2023-04-02 22:10:43,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 22:10:43,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 22:10:43,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 22:10:44,428 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 22:10:44,428 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 22:10:44,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204045618] [2023-04-02 22:10:44,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204045618] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 22:10:44,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2059788202] [2023-04-02 22:10:44,433 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-04-02 22:10:44,433 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 22:10:44,433 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 22:10:44,436 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 22:10:44,460 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-04-02 22:10:44,523 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2023-04-02 22:10:44,523 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-02 22:10:44,524 INFO L262 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 24 conjunts are in the unsatisfiable core [2023-04-02 22:10:44,526 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 22:10:44,572 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 22:10:44,572 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 22:10:45,406 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 22:10:45,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2059788202] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 22:10:45,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1323183127] [2023-04-02 22:10:45,408 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2023-04-02 22:10:45,408 INFO L166 IcfgInterpreter]: Building call graph [2023-04-02 22:10:45,409 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-02 22:10:45,409 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-02 22:10:45,409 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-02 22:10:45,429 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 15 for LOIs [2023-04-02 22:10:45,488 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 13 for LOIs [2023-04-02 22:10:45,492 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-02 22:10:45,812 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '602#(and (= ~__return_720~0 0) (<= 1 |#StackHeapBarrier|) (<= 100 main_~main__x~0) (not (= 100 main_~main__y~0)) (= |old(~__return_720~0)| 0) (= main_~__VERIFIER_assert__cond~0 0) (= main_~__tmp_1~0 0) (= |#NULL.offset| 0) (= ~__return_main~0 0) (= |#NULL.base| 0))' at error location [2023-04-02 22:10:45,812 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-02 22:10:45,812 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 22:10:45,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 49 [2023-04-02 22:10:45,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845918831] [2023-04-02 22:10:45,813 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 22:10:45,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2023-04-02 22:10:45,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 22:10:45,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2023-04-02 22:10:45,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1610, Invalid=2422, Unknown=0, NotChecked=0, Total=4032 [2023-04-02 22:10:45,816 INFO L87 Difference]: Start difference. First operand 31 states and 31 transitions. Second operand has 49 states, 49 states have (on average 1.0816326530612246) internal successors, (53), 49 states have internal predecessors, (53), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 22:10:45,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 22:10:45,892 INFO L93 Difference]: Finished difference Result 58 states and 81 transitions. [2023-04-02 22:10:45,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-04-02 22:10:45,892 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 1.0816326530612246) internal successors, (53), 49 states have internal predecessors, (53), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 30 [2023-04-02 22:10:45,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 22:10:45,893 INFO L225 Difference]: With dead ends: 58 [2023-04-02 22:10:45,893 INFO L226 Difference]: Without dead ends: 55 [2023-04-02 22:10:45,894 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1358 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1610, Invalid=2422, Unknown=0, NotChecked=0, Total=4032 [2023-04-02 22:10:45,895 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 0 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-02 22:10:45,895 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 27 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-02 22:10:45,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2023-04-02 22:10:45,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2023-04-02 22:10:45,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 51 states have (on average 1.0196078431372548) internal successors, (52), 51 states have internal predecessors, (52), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 22:10:45,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 55 transitions. [2023-04-02 22:10:45,900 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 55 transitions. Word has length 30 [2023-04-02 22:10:45,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 22:10:45,900 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 55 transitions. [2023-04-02 22:10:45,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 1.0816326530612246) internal successors, (53), 49 states have internal predecessors, (53), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 22:10:45,900 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 55 transitions. [2023-04-02 22:10:45,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-04-02 22:10:45,901 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 22:10:45,901 INFO L195 NwaCegarLoop]: trace histogram [37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 22:10:45,916 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-04-02 22:10:46,106 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,SelfDestructingSolverStorable2 [2023-04-02 22:10:46,106 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 22:10:46,107 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 22:10:46,107 INFO L85 PathProgramCache]: Analyzing trace with hash -246661209, now seen corresponding path program 3 times [2023-04-02 22:10:46,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 22:10:46,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842587545] [2023-04-02 22:10:46,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 22:10:46,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 22:10:46,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 22:10:48,072 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 0 proven. 703 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 22:10:48,072 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 22:10:48,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842587545] [2023-04-02 22:10:48,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842587545] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 22:10:48,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1228854599] [2023-04-02 22:10:48,072 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-04-02 22:10:48,072 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 22:10:48,073 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 22:10:48,077 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 22:10:48,079 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-04-02 22:10:48,128 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-04-02 22:10:48,128 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-02 22:10:48,129 INFO L262 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 48 conjunts are in the unsatisfiable core [2023-04-02 22:10:48,134 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 22:10:48,229 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 0 proven. 703 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 22:10:48,230 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 22:10:50,670 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 0 proven. 703 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 22:10:50,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1228854599] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 22:10:50,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1572138832] [2023-04-02 22:10:50,672 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2023-04-02 22:10:50,672 INFO L166 IcfgInterpreter]: Building call graph [2023-04-02 22:10:50,672 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-02 22:10:50,672 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-02 22:10:50,672 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-02 22:10:50,697 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 15 for LOIs [2023-04-02 22:10:50,788 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 13 for LOIs [2023-04-02 22:10:50,797 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-02 22:10:51,104 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1248#(and (= ~__return_720~0 0) (<= 1 |#StackHeapBarrier|) (<= 100 main_~main__x~0) (not (= 100 main_~main__y~0)) (= |old(~__return_720~0)| 0) (= main_~__VERIFIER_assert__cond~0 0) (= main_~__tmp_1~0 0) (= |#NULL.offset| 0) (= ~__return_main~0 0) (= |#NULL.base| 0))' at error location [2023-04-02 22:10:51,104 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-02 22:10:51,104 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 22:10:51,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49, 49] total 97 [2023-04-02 22:10:51,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556006012] [2023-04-02 22:10:51,104 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 22:10:51,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 97 states [2023-04-02 22:10:51,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 22:10:51,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2023-04-02 22:10:51,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5522, Invalid=6910, Unknown=0, NotChecked=0, Total=12432 [2023-04-02 22:10:51,109 INFO L87 Difference]: Start difference. First operand 55 states and 55 transitions. Second operand has 97 states, 97 states have (on average 1.041237113402062) internal successors, (101), 97 states have internal predecessors, (101), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 22:10:51,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 22:10:51,247 INFO L93 Difference]: Finished difference Result 106 states and 153 transitions. [2023-04-02 22:10:51,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2023-04-02 22:10:51,247 INFO L78 Accepts]: Start accepts. Automaton has has 97 states, 97 states have (on average 1.041237113402062) internal successors, (101), 97 states have internal predecessors, (101), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 54 [2023-04-02 22:10:51,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 22:10:51,248 INFO L225 Difference]: With dead ends: 106 [2023-04-02 22:10:51,248 INFO L226 Difference]: Without dead ends: 103 [2023-04-02 22:10:51,251 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2750 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=5522, Invalid=6910, Unknown=0, NotChecked=0, Total=12432 [2023-04-02 22:10:51,252 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 0 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 22:10:51,252 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 32 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 22:10:51,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2023-04-02 22:10:51,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2023-04-02 22:10:51,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 99 states have (on average 1.0101010101010102) internal successors, (100), 99 states have internal predecessors, (100), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 22:10:51,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 103 transitions. [2023-04-02 22:10:51,259 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 103 transitions. Word has length 54 [2023-04-02 22:10:51,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 22:10:51,259 INFO L495 AbstractCegarLoop]: Abstraction has 103 states and 103 transitions. [2023-04-02 22:10:51,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 97 states, 97 states have (on average 1.041237113402062) internal successors, (101), 97 states have internal predecessors, (101), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 22:10:51,260 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 103 transitions. [2023-04-02 22:10:51,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-04-02 22:10:51,261 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 22:10:51,261 INFO L195 NwaCegarLoop]: trace histogram [85, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 22:10:51,281 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-04-02 22:10:51,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 22:10:51,467 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 22:10:51,467 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 22:10:51,467 INFO L85 PathProgramCache]: Analyzing trace with hash -1745342553, now seen corresponding path program 4 times [2023-04-02 22:10:51,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 22:10:51,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074206855] [2023-04-02 22:10:51,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 22:10:51,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 22:10:51,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 22:10:58,607 INFO L134 CoverageAnalysis]: Checked inductivity of 3655 backedges. 0 proven. 3655 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 22:10:58,607 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 22:10:58,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074206855] [2023-04-02 22:10:58,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074206855] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 22:10:58,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [468646662] [2023-04-02 22:10:58,608 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-04-02 22:10:58,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 22:10:58,608 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 22:10:58,618 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 22:10:58,619 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-04-02 22:10:58,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 22:10:58,691 INFO L262 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 96 conjunts are in the unsatisfiable core [2023-04-02 22:10:58,696 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 22:11:06,070 INFO L134 CoverageAnalysis]: Checked inductivity of 3655 backedges. 0 proven. 3655 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 22:11:06,072 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 22:11:07,087 INFO L134 CoverageAnalysis]: Checked inductivity of 3655 backedges. 0 proven. 3655 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 22:11:07,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [468646662] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 22:11:07,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1095688151] [2023-04-02 22:11:07,088 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2023-04-02 22:11:07,089 INFO L166 IcfgInterpreter]: Building call graph [2023-04-02 22:11:07,089 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-02 22:11:07,089 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-02 22:11:07,089 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-02 22:11:07,103 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 15 for LOIs [2023-04-02 22:11:07,142 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 13 for LOIs [2023-04-02 22:11:07,146 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-02 22:11:08,610 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2473#(and (= ~__return_720~0 0) (<= 1 |#StackHeapBarrier|) (<= 100 main_~main__x~0) (not (= 100 main_~main__y~0)) (= |old(~__return_720~0)| 0) (= main_~__VERIFIER_assert__cond~0 0) (= main_~__tmp_1~0 0) (= |#NULL.offset| 0) (= ~__return_main~0 0) (= |#NULL.base| 0))' at error location [2023-04-02 22:11:08,610 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-02 22:11:08,610 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 22:11:08,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 97, 97] total 196 [2023-04-02 22:11:08,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554485645] [2023-04-02 22:11:08,611 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 22:11:08,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 196 states [2023-04-02 22:11:08,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 22:11:08,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 196 interpolants. [2023-04-02 22:11:08,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11296, Invalid=33014, Unknown=0, NotChecked=0, Total=44310 [2023-04-02 22:11:08,626 INFO L87 Difference]: Start difference. First operand 103 states and 103 transitions. Second operand has 196 states, 196 states have (on average 1.0714285714285714) internal successors, (210), 196 states have internal predecessors, (210), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 22:11:10,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 22:11:10,126 INFO L93 Difference]: Finished difference Result 112 states and 117 transitions. [2023-04-02 22:11:10,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2023-04-02 22:11:10,127 INFO L78 Accepts]: Start accepts. Automaton has has 196 states, 196 states have (on average 1.0714285714285714) internal successors, (210), 196 states have internal predecessors, (210), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 102 [2023-04-02 22:11:10,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 22:11:10,131 INFO L225 Difference]: With dead ends: 112 [2023-04-02 22:11:10,131 INFO L226 Difference]: Without dead ends: 109 [2023-04-02 22:11:10,146 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 402 GetRequests, 192 SyntacticMatches, 1 SemanticMatches, 209 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4149 ImplicationChecksByTransitivity, 11.2s TimeCoverageRelationStatistics Valid=11296, Invalid=33014, Unknown=0, NotChecked=0, Total=44310 [2023-04-02 22:11:10,151 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 0 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 5188 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 5188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-04-02 22:11:10,152 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 27 Invalid, 5188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5188 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-04-02 22:11:10,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2023-04-02 22:11:10,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2023-04-02 22:11:10,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 105 states have (on average 1.0095238095238095) internal successors, (106), 105 states have internal predecessors, (106), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 22:11:10,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 109 transitions. [2023-04-02 22:11:10,171 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 109 transitions. Word has length 102 [2023-04-02 22:11:10,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 22:11:10,172 INFO L495 AbstractCegarLoop]: Abstraction has 109 states and 109 transitions. [2023-04-02 22:11:10,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 196 states, 196 states have (on average 1.0714285714285714) internal successors, (210), 196 states have internal predecessors, (210), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 22:11:10,173 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 109 transitions. [2023-04-02 22:11:10,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-04-02 22:11:10,173 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 22:11:10,174 INFO L195 NwaCegarLoop]: trace histogram [91, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 22:11:10,179 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-04-02 22:11:10,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 22:11:10,374 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 22:11:10,375 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 22:11:10,375 INFO L85 PathProgramCache]: Analyzing trace with hash 725642663, now seen corresponding path program 5 times [2023-04-02 22:11:10,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 22:11:10,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512711100] [2023-04-02 22:11:10,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 22:11:10,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 22:11:10,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 22:11:20,259 INFO L134 CoverageAnalysis]: Checked inductivity of 4186 backedges. 0 proven. 4186 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 22:11:20,260 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 22:11:20,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512711100] [2023-04-02 22:11:20,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512711100] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 22:11:20,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [300423273] [2023-04-02 22:11:20,261 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-04-02 22:11:20,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 22:11:20,264 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 22:11:20,266 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 22:11:20,267 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-04-02 22:11:20,415 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 47 check-sat command(s) [2023-04-02 22:11:20,415 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-02 22:11:20,418 INFO L262 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 111 conjunts are in the unsatisfiable core [2023-04-02 22:11:20,423 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 22:11:24,791 INFO L134 CoverageAnalysis]: Checked inductivity of 4186 backedges. 0 proven. 4186 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 22:11:24,791 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 22:14:24,512 INFO L134 CoverageAnalysis]: Checked inductivity of 4186 backedges. 0 proven. 4186 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 22:14:24,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [300423273] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 22:14:24,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [464142974] [2023-04-02 22:14:24,514 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2023-04-02 22:14:24,514 INFO L166 IcfgInterpreter]: Building call graph [2023-04-02 22:14:24,514 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-02 22:14:24,514 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-02 22:14:24,515 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-02 22:14:24,531 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 15 for LOIs [2023-04-02 22:14:24,606 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 13 for LOIs [2023-04-02 22:14:24,609 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-02 22:14:27,179 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3819#(and (= ~__return_720~0 0) (<= 1 |#StackHeapBarrier|) (<= 100 main_~main__x~0) (not (= 100 main_~main__y~0)) (= |old(~__return_720~0)| 0) (= main_~__VERIFIER_assert__cond~0 0) (= main_~__tmp_1~0 0) (= |#NULL.offset| 0) (= ~__return_main~0 0) (= |#NULL.base| 0))' at error location [2023-04-02 22:14:27,180 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-02 22:14:27,180 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 22:14:27,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [104, 104, 104] total 257 [2023-04-02 22:14:27,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106806003] [2023-04-02 22:14:27,180 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 22:14:27,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 257 states [2023-04-02 22:14:27,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 22:14:27,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 257 interpolants. [2023-04-02 22:14:27,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6702, Invalid=67010, Unknown=0, NotChecked=0, Total=73712 [2023-04-02 22:14:27,189 INFO L87 Difference]: Start difference. First operand 109 states and 109 transitions. Second operand has 257 states, 257 states have (on average 1.0116731517509727) internal successors, (260), 257 states have internal predecessors, (260), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 22:14:38,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 22:14:38,899 INFO L93 Difference]: Finished difference Result 111 states and 112 transitions. [2023-04-02 22:14:38,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2023-04-02 22:14:38,900 INFO L78 Accepts]: Start accepts. Automaton has has 257 states, 257 states have (on average 1.0116731517509727) internal successors, (260), 257 states have internal predecessors, (260), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 108 [2023-04-02 22:14:38,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 22:14:38,900 INFO L225 Difference]: With dead ends: 111 [2023-04-02 22:14:38,900 INFO L226 Difference]: Without dead ends: 0 [2023-04-02 22:14:38,904 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 428 GetRequests, 155 SyntacticMatches, 2 SemanticMatches, 271 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14973 ImplicationChecksByTransitivity, 55.0s TimeCoverageRelationStatistics Valid=6709, Invalid=67547, Unknown=0, NotChecked=0, Total=74256 [2023-04-02 22:14:38,906 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 2 mSDsluCounter, 409 mSDsCounter, 0 mSdLazyCounter, 12955 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 413 SdHoareTripleChecker+Invalid, 12956 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12955 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.2s IncrementalHoareTripleChecker+Time [2023-04-02 22:14:38,906 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 413 Invalid, 12956 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12955 Invalid, 0 Unknown, 0 Unchecked, 11.2s Time] [2023-04-02 22:14:38,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-04-02 22:14:38,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-04-02 22:14:38,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-04-02 22:14:38,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-04-02 22:14:38,907 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 108 [2023-04-02 22:14:38,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 22:14:38,907 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-04-02 22:14:38,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 257 states, 257 states have (on average 1.0116731517509727) internal successors, (260), 257 states have internal predecessors, (260), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 22:14:38,907 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-04-02 22:14:38,907 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-04-02 22:14:38,909 INFO L805 garLoopResultBuilder]: Registering result SAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-04-02 22:14:38,924 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-04-02 22:14:39,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 22:14:39,128 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-04-02 22:14:40,264 INFO L899 garLoopResultBuilder]: For program point reach_errorEXIT(line 4) no Hoare annotation was computed. [2023-04-02 22:14:40,264 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line 4) no Hoare annotation was computed. [2023-04-02 22:14:40,265 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(lines 6 8) no Hoare annotation was computed. [2023-04-02 22:14:40,265 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 6 8) no Hoare annotation was computed. [2023-04-02 22:14:40,265 INFO L899 garLoopResultBuilder]: For program point mainEXIT(lines 13 214) no Hoare annotation was computed. [2023-04-02 22:14:40,266 INFO L895 garLoopResultBuilder]: At program point $Ultimate##38(lines 72 105) the Hoare annotation is: (let ((.cse0 (<= main_~main__y~0 50)) (.cse1 (<= 50 main_~main__y~0))) (or (and .cse0 .cse1 (<= 9 main_~main__x~0) (<= main_~main__x~0 9)) (and (<= main_~main__x~0 97) (<= main_~main__y~0 97) (<= 97 main_~main__y~0) (<= 97 main_~main__x~0)) (and (<= 93 main_~main__y~0) (<= 93 main_~main__x~0) (<= main_~main__x~0 93) (<= main_~main__y~0 93)) (and .cse0 .cse1 (<= 18 main_~main__x~0) (<= main_~main__x~0 18)) (and (<= 26 main_~main__x~0) .cse0 .cse1 (<= main_~main__x~0 26)) (and (<= main_~main__y~0 90) (<= main_~main__x~0 90) (<= 90 main_~main__x~0) (<= 90 main_~main__y~0)) (and (<= main_~main__x~0 88) (<= main_~main__y~0 88) (<= 88 main_~main__y~0) (<= 88 main_~main__x~0)) (and (<= 94 main_~main__y~0) (<= main_~main__x~0 94) (<= main_~main__y~0 94) (<= 94 main_~main__x~0)) (and .cse0 .cse1 (<= main_~main__x~0 12) (<= 12 main_~main__x~0)) (and (<= 86 main_~main__x~0) (<= main_~main__x~0 86) (<= 86 main_~main__y~0) (<= main_~main__y~0 86)) (and (<= main_~main__y~0 98) (<= 98 main_~main__y~0) (<= 98 main_~main__x~0) (<= main_~main__x~0 98)) (and .cse0 .cse1 (<= main_~main__x~0 15) (<= 15 main_~main__x~0)) (and .cse0 .cse1 (<= 23 main_~main__x~0) (<= main_~main__x~0 23)) (and (<= 27 main_~main__x~0) (<= main_~main__x~0 27) .cse0 .cse1) (and .cse0 .cse1 (<= 36 main_~main__x~0) (<= main_~main__x~0 36)) (and (<= main_~main__y~0 51) (<= main_~main__x~0 51) (<= 51 main_~main__y~0) (<= 51 main_~main__x~0)) (and (<= main_~main__y~0 57) (<= 57 main_~main__x~0) (<= main_~main__x~0 57) (<= 57 main_~main__y~0)) (and .cse0 .cse1 (<= 16 main_~main__x~0) (<= main_~main__x~0 16)) (and (<= main_~main__x~0 92) (<= 92 main_~main__x~0) (<= 92 main_~main__y~0) (<= main_~main__y~0 92)) (and (<= 80 main_~main__y~0) (<= main_~main__y~0 80) (<= main_~main__x~0 80) (<= 80 main_~main__x~0)) (and (<= main_~main__x~0 64) (<= 64 main_~main__y~0) (<= main_~main__y~0 64) (<= 64 main_~main__x~0)) (and (<= 96 main_~main__x~0) (<= main_~main__y~0 96) (<= 96 main_~main__y~0) (<= main_~main__x~0 96)) (and (<= 87 main_~main__x~0) (<= 87 main_~main__y~0) (<= main_~main__y~0 87) (<= main_~main__x~0 87)) (and (<= 83 main_~main__y~0) (<= main_~main__x~0 83) (<= main_~main__y~0 83) (<= 83 main_~main__x~0)) (and (<= 28 main_~main__x~0) .cse0 .cse1 (<= main_~main__x~0 28)) (and (<= main_~main__y~0 78) (<= 78 main_~main__x~0) (<= 78 main_~main__y~0) (<= main_~main__x~0 78)) (and (<= 82 main_~main__x~0) (<= main_~main__x~0 82) (<= 82 main_~main__y~0) (<= main_~main__y~0 82)) (and .cse0 .cse1 (<= 41 main_~main__x~0) (<= main_~main__x~0 41)) (and (<= 71 main_~main__y~0) (<= main_~main__y~0 71) (<= main_~main__x~0 71) (<= 71 main_~main__x~0)) (and .cse0 .cse1 (<= 21 main_~main__x~0) (<= main_~main__x~0 21)) (and (<= main_~main__y~0 62) (<= main_~main__x~0 62) (<= 62 main_~main__x~0) (<= 62 main_~main__y~0)) (and .cse0 .cse1 (<= main_~main__x~0 22) (<= 22 main_~main__x~0)) (and .cse0 .cse1 (<= 39 main_~main__x~0) (<= main_~main__x~0 39)) (and (<= 81 main_~main__x~0) (<= main_~main__y~0 81) (<= 81 main_~main__y~0) (<= main_~main__x~0 81)) (and .cse0 .cse1 (<= main_~main__x~0 19) (<= 19 main_~main__x~0)) (and (<= 53 main_~main__y~0) (<= main_~main__y~0 53) (<= 53 main_~main__x~0) (<= main_~main__x~0 53)) (and (<= 33 main_~main__x~0) .cse0 .cse1 (<= main_~main__x~0 33)) (and (<= main_~main__y~0 66) (<= main_~main__x~0 66) (<= 66 main_~main__x~0) (<= 66 main_~main__y~0)) (and (<= main_~main__x~0 58) (<= main_~main__y~0 58) (<= 58 main_~main__y~0) (<= 58 main_~main__x~0)) (and (<= 63 main_~main__y~0) (<= 63 main_~main__x~0) (<= main_~main__x~0 63) (<= main_~main__y~0 63)) (and (<= main_~main__x~0 73) (<= 73 main_~main__y~0) (<= main_~main__y~0 73) (<= 73 main_~main__x~0)) (and (<= main_~main__y~0 68) (<= main_~main__x~0 68) (<= 68 main_~main__y~0) (<= 68 main_~main__x~0)) (and .cse0 .cse1 (<= 32 main_~main__x~0) (<= main_~main__x~0 32)) (and .cse0 .cse1 (<= main_~main__x~0 48) (<= 48 main_~main__x~0)) (and .cse0 (<= main_~main__x~0 44) .cse1 (<= 44 main_~main__x~0)) (and (<= main_~main__y~0 84) (<= main_~main__x~0 84) (<= 84 main_~main__x~0) (<= 84 main_~main__y~0)) (and (<= 34 main_~main__x~0) .cse0 .cse1 (<= main_~main__x~0 34)) (and .cse0 (<= 46 main_~main__x~0) (<= main_~main__x~0 46) .cse1) (and .cse0 .cse1 (<= main_~main__x~0 42) (<= 42 main_~main__x~0)) (and .cse0 .cse1 (<= 45 main_~main__x~0) (<= main_~main__x~0 45)) (and .cse0 .cse1 (<= 50 main_~main__x~0) (<= main_~main__x~0 50)) (and (<= 52 main_~main__y~0) (<= 52 main_~main__x~0) (<= main_~main__x~0 52) (<= main_~main__y~0 52)) (and (<= 89 main_~main__y~0) (<= main_~main__y~0 89) (<= main_~main__x~0 89) (<= 89 main_~main__x~0)) (and (<= 49 main_~main__x~0) .cse0 .cse1 (<= main_~main__x~0 49)) (and (<= main_~main__x~0 56) (<= 56 main_~main__x~0) (<= 56 main_~main__y~0) (<= main_~main__y~0 56)) (and .cse0 .cse1 (<= main_~main__x~0 29) (<= 29 main_~main__x~0)) (and (<= main_~main__y~0 72) (<= 72 main_~main__x~0) (<= 72 main_~main__y~0) (<= main_~main__x~0 72)) (and (<= main_~main__x~0 65) (<= 65 main_~main__x~0) (<= 65 main_~main__y~0) (<= main_~main__y~0 65)) (and (<= 91 main_~main__y~0) (<= 91 main_~main__x~0) (<= main_~main__x~0 91) (<= main_~main__y~0 91)) (and .cse0 .cse1 (<= 47 main_~main__x~0) (<= main_~main__x~0 47)) (and (<= main_~main__y~0 85) (<= main_~main__x~0 85) (<= 85 main_~main__x~0) (<= 85 main_~main__y~0)) (and (<= 20 main_~main__x~0) .cse0 .cse1 (<= main_~main__x~0 20)) (and .cse0 .cse1 (<= main_~main__x~0 17) (<= 17 main_~main__x~0)) (and (<= main_~main__y~0 60) (<= main_~main__x~0 60) (<= 60 main_~main__y~0) (<= 60 main_~main__x~0)) (and .cse0 .cse1 (<= 38 main_~main__x~0) (<= main_~main__x~0 38)) (and (<= 95 main_~main__y~0) (<= main_~main__x~0 95) (<= main_~main__y~0 95) (<= 95 main_~main__x~0)) (and (<= 75 main_~main__x~0) (<= main_~main__x~0 75) (<= main_~main__y~0 75) (<= 75 main_~main__y~0)) (and .cse0 .cse1 (<= main_~main__x~0 13) (<= 13 main_~main__x~0)) (and (<= main_~main__y~0 99) (<= 99 main_~main__y~0) (<= 99 main_~main__x~0) (<= main_~main__x~0 99)) (and .cse0 .cse1 (<= 24 main_~main__x~0) (<= main_~main__x~0 24)) (and .cse0 (<= 10 main_~main__x~0) .cse1 (<= main_~main__x~0 10)) (and (<= 76 main_~main__x~0) (<= main_~main__y~0 76) (<= main_~main__x~0 76) (<= 76 main_~main__y~0)) (and .cse0 .cse1 (<= 25 main_~main__x~0) (<= main_~main__x~0 25)) (and (<= main_~main__y~0 69) (<= main_~main__x~0 69) (<= 69 main_~main__y~0) (<= 69 main_~main__x~0)) (and (<= 77 main_~main__x~0) (<= main_~main__y~0 77) (<= 77 main_~main__y~0) (<= main_~main__x~0 77)) (and .cse0 .cse1 (<= main_~main__x~0 11) (<= 11 main_~main__x~0)) (and .cse0 .cse1 (<= main_~main__x~0 43) (<= 43 main_~main__x~0)) (and (<= main_~main__y~0 67) (<= 67 main_~main__y~0) (<= main_~main__x~0 67) (<= 67 main_~main__x~0)) (and (<= 70 main_~main__y~0) (<= 70 main_~main__x~0) (<= main_~main__y~0 70) (<= main_~main__x~0 70)) (and (<= main_~main__x~0 59) (<= 59 main_~main__x~0) (<= 59 main_~main__y~0) (<= main_~main__y~0 59)) (and (<= 35 main_~main__x~0) (<= main_~main__x~0 35) .cse0 .cse1) (and (<= 100 main_~main__x~0) (<= main_~main__x~0 100) (<= 100 main_~main__y~0) (<= main_~main__y~0 100)) (and (<= main_~main__y~0 79) (<= main_~main__x~0 79) (<= 79 main_~main__x~0) (<= 79 main_~main__y~0)) (and (<= 61 main_~main__x~0) (<= main_~main__x~0 61) (<= main_~main__y~0 61) (<= 61 main_~main__y~0)) (and (<= 30 main_~main__x~0) .cse0 .cse1 (<= main_~main__x~0 30)) (and (<= 55 main_~main__y~0) (<= 55 main_~main__x~0) (<= main_~main__y~0 55) (<= main_~main__x~0 55)) (and (<= 74 main_~main__y~0) (<= main_~main__x~0 74) (<= 74 main_~main__x~0) (<= main_~main__y~0 74)) (and (<= main_~main__x~0 14) .cse0 .cse1 (<= 14 main_~main__x~0)) (and (<= main_~main__x~0 37) .cse0 .cse1 (<= 37 main_~main__x~0)) (and (<= main_~main__x~0 54) (<= 54 main_~main__y~0) (<= main_~main__y~0 54) (<= 54 main_~main__x~0)) (and (<= 40 main_~main__x~0) (<= main_~main__x~0 40) .cse0 .cse1) (and (<= 31 main_~main__x~0) .cse0 .cse1 (<= main_~main__x~0 31)))) [2023-04-02 22:14:40,266 INFO L895 garLoopResultBuilder]: At program point $Ultimate##30(lines 59 129) the Hoare annotation is: (and (<= main_~main__x~0 7) (<= main_~main__y~0 50) (<= 50 main_~main__y~0) (<= 7 main_~main__x~0)) [2023-04-02 22:14:40,266 INFO L895 garLoopResultBuilder]: At program point $Ultimate##34(lines 65 117) the Hoare annotation is: (and (<= main_~main__y~0 50) (<= 50 main_~main__y~0) (<= main_~main__x~0 8) (<= 8 main_~main__x~0)) [2023-04-02 22:14:40,266 INFO L895 garLoopResultBuilder]: At program point $Ultimate##6(lines 23 201) the Hoare annotation is: (and (<= main_~main__y~0 50) (<= 50 main_~main__y~0) (<= 1 main_~main__x~0) (<= main_~main__x~0 1)) [2023-04-02 22:14:40,266 INFO L899 garLoopResultBuilder]: For program point L94(lines 94 103) no Hoare annotation was computed. [2023-04-02 22:14:40,266 INFO L895 garLoopResultBuilder]: At program point $Ultimate##26(lines 53 141) the Hoare annotation is: (and (<= main_~main__y~0 50) (<= 50 main_~main__y~0) (<= main_~main__x~0 6) (<= 6 main_~main__x~0)) [2023-04-02 22:14:40,266 INFO L895 garLoopResultBuilder]: At program point $Ultimate##22(lines 47 153) the Hoare annotation is: (and (<= main_~main__y~0 50) (<= 50 main_~main__y~0) (<= 5 main_~main__x~0) (<= main_~main__x~0 5)) [2023-04-02 22:14:40,266 INFO L899 garLoopResultBuilder]: For program point L17(lines 17 213) no Hoare annotation was computed. [2023-04-02 22:14:40,266 INFO L895 garLoopResultBuilder]: At program point $Ultimate##18(lines 41 165) the Hoare annotation is: (and (<= 4 main_~main__x~0) (<= main_~main__y~0 50) (<= 50 main_~main__y~0) (<= main_~main__x~0 4)) [2023-04-02 22:14:40,266 INFO L899 garLoopResultBuilder]: For program point mainFINAL(lines 13 214) no Hoare annotation was computed. [2023-04-02 22:14:40,267 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 13 214) the Hoare annotation is: true [2023-04-02 22:14:40,267 INFO L895 garLoopResultBuilder]: At program point $Ultimate##10(lines 29 189) the Hoare annotation is: (and (<= main_~main__y~0 50) (<= 50 main_~main__y~0) (<= main_~main__x~0 2) (<= 2 main_~main__x~0)) [2023-04-02 22:14:40,267 INFO L895 garLoopResultBuilder]: At program point $Ultimate##14(lines 35 177) the Hoare annotation is: (and (<= 3 main_~main__x~0) (<= main_~main__y~0 50) (<= 50 main_~main__y~0) (<= main_~main__x~0 3)) [2023-04-02 22:14:40,267 INFO L899 garLoopResultBuilder]: For program point L96(line 96) no Hoare annotation was computed. [2023-04-02 22:14:40,267 INFO L899 garLoopResultBuilder]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 96) no Hoare annotation was computed. [2023-04-02 22:14:40,267 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(line -1) the Hoare annotation is: true [2023-04-02 22:14:40,267 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2023-04-02 22:14:40,267 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-04-02 22:14:40,267 INFO L902 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: true [2023-04-02 22:14:40,267 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2023-04-02 22:14:40,267 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(line -1) the Hoare annotation is: true [2023-04-02 22:14:40,270 INFO L445 BasicCegarLoop]: Path program histogram: [5, 1] [2023-04-02 22:14:40,271 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-04-02 22:14:40,321 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.04 10:14:40 BoogieIcfgContainer [2023-04-02 22:14:40,321 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-04-02 22:14:40,321 INFO L158 Benchmark]: Toolchain (without parser) took 239579.31ms. Allocated memory was 251.7MB in the beginning and 1.3GB in the end (delta: 999.3MB). Free memory was 217.2MB in the beginning and 452.2MB in the end (delta: -235.0MB). Peak memory consumption was 765.1MB. Max. memory is 8.0GB. [2023-04-02 22:14:40,322 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 187.7MB. Free memory is still 135.0MB. There was no memory consumed. Max. memory is 8.0GB. [2023-04-02 22:14:40,322 INFO L158 Benchmark]: CACSL2BoogieTranslator took 226.15ms. Allocated memory is still 251.7MB. Free memory was 217.2MB in the beginning and 205.5MB in the end (delta: 11.7MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-04-02 22:14:40,322 INFO L158 Benchmark]: Boogie Preprocessor took 32.84ms. Allocated memory is still 251.7MB. Free memory was 205.5MB in the beginning and 204.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-04-02 22:14:40,322 INFO L158 Benchmark]: RCFGBuilder took 362.93ms. Allocated memory is still 251.7MB. Free memory was 204.0MB in the beginning and 185.1MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. [2023-04-02 22:14:40,322 INFO L158 Benchmark]: TraceAbstraction took 238951.93ms. Allocated memory was 251.7MB in the beginning and 1.3GB in the end (delta: 999.3MB). Free memory was 184.7MB in the beginning and 452.2MB in the end (delta: -267.5MB). Peak memory consumption was 732.6MB. Max. memory is 8.0GB. [2023-04-02 22:14:40,323 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 187.7MB. Free memory is still 135.0MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 226.15ms. Allocated memory is still 251.7MB. Free memory was 217.2MB in the beginning and 205.5MB in the end (delta: 11.7MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 32.84ms. Allocated memory is still 251.7MB. Free memory was 205.5MB in the beginning and 204.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 362.93ms. Allocated memory is still 251.7MB. Free memory was 204.0MB in the beginning and 185.1MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. * TraceAbstraction took 238951.93ms. Allocated memory was 251.7MB in the beginning and 1.3GB in the end (delta: 999.3MB). Free memory was 184.7MB in the beginning and 452.2MB in the end (delta: -267.5MB). Peak memory consumption was 732.6MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 96]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 26 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 238.8s, OverallIterations: 6, TraceHistogramMax: 91, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 13.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2 SdHoareTripleChecker+Valid, 12.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2 mSDsluCounter, 573 SdHoareTripleChecker+Invalid, 11.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 530 mSDsCounter, 69 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 18441 IncrementalHoareTripleChecker+Invalid, 18510 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 69 mSolverCounterUnsat, 43 mSDtfsCounter, 18441 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1232 GetRequests, 529 SyntacticMatches, 3 SemanticMatches, 700 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23892 ImplicationChecksByTransitivity, 71.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=109occurred in iteration=5, InterpolantAutomatonStates: 386, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 13 LocationsWithAnnotation, 13 PreInvPairs, 105 NumberOfFragments, 1305 HoareAnnotationTreeSize, 13 FomulaSimplifications, 258 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 13 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.9s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 216.5s InterpolantComputationTime, 641 NumberOfCodeBlocks, 641 NumberOfCodeBlocksAsserted, 65 NumberOfCheckSat, 937 ConstructedInterpolants, 0 QuantifiedInterpolants, 20511 SizeOfPredicates, 8 NumberOfNonLiveVariables, 864 ConjunctsInSsa, 291 ConjunctsInUnsatCore, 16 InterpolantComputations, 1 PerfectInterpolantSequences, 0/25908 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 29]: Loop Invariant Derived loop invariant: ((main__y <= 50 && 50 <= main__y) && main__x <= 2) && 2 <= main__x - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: ((3 <= main__x && main__y <= 50) && 50 <= main__y) && main__x <= 3 - InvariantResult [Line: 59]: Loop Invariant Derived loop invariant: ((main__x <= 7 && main__y <= 50) && 50 <= main__y) && 7 <= main__x - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: ((main__y <= 50 && 50 <= main__y) && 1 <= main__x) && main__x <= 1 - InvariantResult [Line: 65]: Loop Invariant Derived loop invariant: ((main__y <= 50 && 50 <= main__y) && main__x <= 8) && 8 <= main__x - InvariantResult [Line: 53]: Loop Invariant Derived loop invariant: ((main__y <= 50 && 50 <= main__y) && main__x <= 6) && 6 <= main__x - InvariantResult [Line: 72]: Loop Invariant Derived loop invariant: (((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((main__y <= 50 && 50 <= main__y) && 9 <= main__x) && main__x <= 9) || (((main__x <= 97 && main__y <= 97) && 97 <= main__y) && 97 <= main__x)) || (((93 <= main__y && 93 <= main__x) && main__x <= 93) && main__y <= 93)) || (((main__y <= 50 && 50 <= main__y) && 18 <= main__x) && main__x <= 18)) || (((26 <= main__x && main__y <= 50) && 50 <= main__y) && main__x <= 26)) || (((main__y <= 90 && main__x <= 90) && 90 <= main__x) && 90 <= main__y)) || (((main__x <= 88 && main__y <= 88) && 88 <= main__y) && 88 <= main__x)) || (((94 <= main__y && main__x <= 94) && main__y <= 94) && 94 <= main__x)) || (((main__y <= 50 && 50 <= main__y) && main__x <= 12) && 12 <= main__x)) || (((86 <= main__x && main__x <= 86) && 86 <= main__y) && main__y <= 86)) || (((main__y <= 98 && 98 <= main__y) && 98 <= main__x) && main__x <= 98)) || (((main__y <= 50 && 50 <= main__y) && main__x <= 15) && 15 <= main__x)) || (((main__y <= 50 && 50 <= main__y) && 23 <= main__x) && main__x <= 23)) || (((27 <= main__x && main__x <= 27) && main__y <= 50) && 50 <= main__y)) || (((main__y <= 50 && 50 <= main__y) && 36 <= main__x) && main__x <= 36)) || (((main__y <= 51 && main__x <= 51) && 51 <= main__y) && 51 <= main__x)) || (((main__y <= 57 && 57 <= main__x) && main__x <= 57) && 57 <= main__y)) || (((main__y <= 50 && 50 <= main__y) && 16 <= main__x) && main__x <= 16)) || (((main__x <= 92 && 92 <= main__x) && 92 <= main__y) && main__y <= 92)) || (((80 <= main__y && main__y <= 80) && main__x <= 80) && 80 <= main__x)) || (((main__x <= 64 && 64 <= main__y) && main__y <= 64) && 64 <= main__x)) || (((96 <= main__x && main__y <= 96) && 96 <= main__y) && main__x <= 96)) || (((87 <= main__x && 87 <= main__y) && main__y <= 87) && main__x <= 87)) || (((83 <= main__y && main__x <= 83) && main__y <= 83) && 83 <= main__x)) || (((28 <= main__x && main__y <= 50) && 50 <= main__y) && main__x <= 28)) || (((main__y <= 78 && 78 <= main__x) && 78 <= main__y) && main__x <= 78)) || (((82 <= main__x && main__x <= 82) && 82 <= main__y) && main__y <= 82)) || (((main__y <= 50 && 50 <= main__y) && 41 <= main__x) && main__x <= 41)) || (((71 <= main__y && main__y <= 71) && main__x <= 71) && 71 <= main__x)) || (((main__y <= 50 && 50 <= main__y) && 21 <= main__x) && main__x <= 21)) || (((main__y <= 62 && main__x <= 62) && 62 <= main__x) && 62 <= main__y)) || (((main__y <= 50 && 50 <= main__y) && main__x <= 22) && 22 <= main__x)) || (((main__y <= 50 && 50 <= main__y) && 39 <= main__x) && main__x <= 39)) || (((81 <= main__x && main__y <= 81) && 81 <= main__y) && main__x <= 81)) || (((main__y <= 50 && 50 <= main__y) && main__x <= 19) && 19 <= main__x)) || (((53 <= main__y && main__y <= 53) && 53 <= main__x) && main__x <= 53)) || (((33 <= main__x && main__y <= 50) && 50 <= main__y) && main__x <= 33)) || (((main__y <= 66 && main__x <= 66) && 66 <= main__x) && 66 <= main__y)) || (((main__x <= 58 && main__y <= 58) && 58 <= main__y) && 58 <= main__x)) || (((63 <= main__y && 63 <= main__x) && main__x <= 63) && main__y <= 63)) || (((main__x <= 73 && 73 <= main__y) && main__y <= 73) && 73 <= main__x)) || (((main__y <= 68 && main__x <= 68) && 68 <= main__y) && 68 <= main__x)) || (((main__y <= 50 && 50 <= main__y) && 32 <= main__x) && main__x <= 32)) || (((main__y <= 50 && 50 <= main__y) && main__x <= 48) && 48 <= main__x)) || (((main__y <= 50 && main__x <= 44) && 50 <= main__y) && 44 <= main__x)) || (((main__y <= 84 && main__x <= 84) && 84 <= main__x) && 84 <= main__y)) || (((34 <= main__x && main__y <= 50) && 50 <= main__y) && main__x <= 34)) || (((main__y <= 50 && 46 <= main__x) && main__x <= 46) && 50 <= main__y)) || (((main__y <= 50 && 50 <= main__y) && main__x <= 42) && 42 <= main__x)) || (((main__y <= 50 && 50 <= main__y) && 45 <= main__x) && main__x <= 45)) || (((main__y <= 50 && 50 <= main__y) && 50 <= main__x) && main__x <= 50)) || (((52 <= main__y && 52 <= main__x) && main__x <= 52) && main__y <= 52)) || (((89 <= main__y && main__y <= 89) && main__x <= 89) && 89 <= main__x)) || (((49 <= main__x && main__y <= 50) && 50 <= main__y) && main__x <= 49)) || (((main__x <= 56 && 56 <= main__x) && 56 <= main__y) && main__y <= 56)) || (((main__y <= 50 && 50 <= main__y) && main__x <= 29) && 29 <= main__x)) || (((main__y <= 72 && 72 <= main__x) && 72 <= main__y) && main__x <= 72)) || (((main__x <= 65 && 65 <= main__x) && 65 <= main__y) && main__y <= 65)) || (((91 <= main__y && 91 <= main__x) && main__x <= 91) && main__y <= 91)) || (((main__y <= 50 && 50 <= main__y) && 47 <= main__x) && main__x <= 47)) || (((main__y <= 85 && main__x <= 85) && 85 <= main__x) && 85 <= main__y)) || (((20 <= main__x && main__y <= 50) && 50 <= main__y) && main__x <= 20)) || (((main__y <= 50 && 50 <= main__y) && main__x <= 17) && 17 <= main__x)) || (((main__y <= 60 && main__x <= 60) && 60 <= main__y) && 60 <= main__x)) || (((main__y <= 50 && 50 <= main__y) && 38 <= main__x) && main__x <= 38)) || (((95 <= main__y && main__x <= 95) && main__y <= 95) && 95 <= main__x)) || (((75 <= main__x && main__x <= 75) && main__y <= 75) && 75 <= main__y)) || (((main__y <= 50 && 50 <= main__y) && main__x <= 13) && 13 <= main__x)) || (((main__y <= 99 && 99 <= main__y) && 99 <= main__x) && main__x <= 99)) || (((main__y <= 50 && 50 <= main__y) && 24 <= main__x) && main__x <= 24)) || (((main__y <= 50 && 10 <= main__x) && 50 <= main__y) && main__x <= 10)) || (((76 <= main__x && main__y <= 76) && main__x <= 76) && 76 <= main__y)) || (((main__y <= 50 && 50 <= main__y) && 25 <= main__x) && main__x <= 25)) || (((main__y <= 69 && main__x <= 69) && 69 <= main__y) && 69 <= main__x)) || (((77 <= main__x && main__y <= 77) && 77 <= main__y) && main__x <= 77)) || (((main__y <= 50 && 50 <= main__y) && main__x <= 11) && 11 <= main__x)) || (((main__y <= 50 && 50 <= main__y) && main__x <= 43) && 43 <= main__x)) || (((main__y <= 67 && 67 <= main__y) && main__x <= 67) && 67 <= main__x)) || (((70 <= main__y && 70 <= main__x) && main__y <= 70) && main__x <= 70)) || (((main__x <= 59 && 59 <= main__x) && 59 <= main__y) && main__y <= 59)) || (((35 <= main__x && main__x <= 35) && main__y <= 50) && 50 <= main__y)) || (((100 <= main__x && main__x <= 100) && 100 <= main__y) && main__y <= 100)) || (((main__y <= 79 && main__x <= 79) && 79 <= main__x) && 79 <= main__y)) || (((61 <= main__x && main__x <= 61) && main__y <= 61) && 61 <= main__y)) || (((30 <= main__x && main__y <= 50) && 50 <= main__y) && main__x <= 30)) || (((55 <= main__y && 55 <= main__x) && main__y <= 55) && main__x <= 55)) || (((74 <= main__y && main__x <= 74) && 74 <= main__x) && main__y <= 74)) || (((main__x <= 14 && main__y <= 50) && 50 <= main__y) && 14 <= main__x)) || (((main__x <= 37 && main__y <= 50) && 50 <= main__y) && 37 <= main__x)) || (((main__x <= 54 && 54 <= main__y) && main__y <= 54) && 54 <= main__x)) || (((40 <= main__x && main__x <= 40) && main__y <= 50) && 50 <= main__y)) || (((31 <= main__x && main__y <= 50) && 50 <= main__y) && main__x <= 31) - InvariantResult [Line: 41]: Loop Invariant Derived loop invariant: ((4 <= main__x && main__y <= 50) && 50 <= main__y) && main__x <= 4 - InvariantResult [Line: 47]: Loop Invariant Derived loop invariant: ((main__y <= 50 && 50 <= main__y) && 5 <= main__x) && main__x <= 5 RESULT: Ultimate proved your program to be correct! [2023-04-02 22:14:40,417 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...