/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/nla-digbench/fermat2-ll.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 05:09:19,097 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 05:09:19,099 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 05:09:19,136 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-01 05:09:19,136 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-01 05:09:19,139 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-01 05:09:19,143 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-01 05:09:19,145 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-01 05:09:19,146 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-01 05:09:19,150 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-01 05:09:19,152 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-01 05:09:19,153 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-01 05:09:19,153 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-01 05:09:19,154 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-01 05:09:19,155 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-01 05:09:19,155 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-01 05:09:19,156 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-01 05:09:19,156 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-01 05:09:19,157 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-01 05:09:19,159 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-01 05:09:19,160 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-01 05:09:19,165 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-01 05:09:19,166 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-01 05:09:19,167 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-01 05:09:19,173 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-01 05:09:19,174 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-01 05:09:19,174 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-01 05:09:19,174 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-01 05:09:19,175 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-01 05:09:19,175 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-01 05:09:19,176 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-01 05:09:19,176 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-01 05:09:19,177 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-01 05:09:19,177 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-01 05:09:19,178 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-01 05:09:19,178 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-01 05:09:19,179 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-01 05:09:19,179 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-01 05:09:19,179 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-01 05:09:19,180 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-01 05:09:19,180 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-01 05:09:19,184 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf [2023-04-01 05:09:19,215 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 05:09:19,215 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 05:09:19,216 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 05:09:19,216 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 05:09:19,216 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 05:09:19,217 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 05:09:19,217 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-01 05:09:19,217 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-01 05:09:19,217 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-01 05:09:19,217 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-01 05:09:19,218 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-01 05:09:19,218 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-01 05:09:19,218 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-01 05:09:19,218 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-01 05:09:19,218 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-01 05:09:19,218 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-01 05:09:19,218 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-01 05:09:19,219 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-01 05:09:19,219 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 05:09:19,219 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 05:09:19,219 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 05:09:19,219 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 05:09:19,219 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 05:09:19,220 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 05:09:19,220 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 05:09:19,220 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 05:09:19,220 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 05:09:19,220 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 05:09:19,220 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 05:09:19,220 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 05:09:19,220 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 05:09:19,221 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 05:09:19,221 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 05:09:19,221 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 05:09:19,221 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-01 05:09:19,221 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 05:09:19,221 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 05:09:19,221 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-01 05:09:19,221 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 05:09:19,222 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 05:09:19,222 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-01 05:09:19,222 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> OctagonDomain [2023-04-01 05:09:19,425 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 05:09:19,444 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 05:09:19,446 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 05:09:19,447 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 05:09:19,448 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 05:09:19,449 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench/fermat2-ll.c [2023-04-01 05:09:20,653 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 05:09:20,858 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 05:09:20,859 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench/fermat2-ll.c [2023-04-01 05:09:20,869 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/752b1aee5/2413cc0479b04a7a850f85b22e0c3cef/FLAG91669f7ad [2023-04-01 05:09:20,888 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/752b1aee5/2413cc0479b04a7a850f85b22e0c3cef [2023-04-01 05:09:20,890 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 05:09:20,892 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 05:09:20,895 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 05:09:20,895 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 05:09:20,899 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 05:09:20,900 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 05:09:20" (1/1) ... [2023-04-01 05:09:20,901 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ecf26d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:09:20, skipping insertion in model container [2023-04-01 05:09:20,901 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 05:09:20" (1/1) ... [2023-04-01 05:09:20,907 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 05:09:20,923 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 05:09:21,041 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/nla-digbench/fermat2-ll.c[524,537] [2023-04-01 05:09:21,053 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 05:09:21,060 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 05:09:21,070 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/nla-digbench/fermat2-ll.c[524,537] [2023-04-01 05:09:21,078 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 05:09:21,087 INFO L208 MainTranslator]: Completed translation [2023-04-01 05:09:21,087 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:09:21 WrapperNode [2023-04-01 05:09:21,088 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 05:09:21,088 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 05:09:21,088 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 05:09:21,089 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 05:09:21,097 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:09:21" (1/1) ... [2023-04-01 05:09:21,097 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:09:21" (1/1) ... [2023-04-01 05:09:21,104 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:09:21" (1/1) ... [2023-04-01 05:09:21,104 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:09:21" (1/1) ... [2023-04-01 05:09:21,108 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:09:21" (1/1) ... [2023-04-01 05:09:21,115 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:09:21" (1/1) ... [2023-04-01 05:09:21,116 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:09:21" (1/1) ... [2023-04-01 05:09:21,117 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:09:21" (1/1) ... [2023-04-01 05:09:21,119 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 05:09:21,119 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 05:09:21,120 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 05:09:21,120 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 05:09:21,120 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:09:21" (1/1) ... [2023-04-01 05:09:21,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 05:09:21,136 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 05:09:21,147 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-04-01 05:09:21,156 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-04-01 05:09:21,177 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 05:09:21,177 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 05:09:21,178 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 05:09:21,178 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-01 05:09:21,178 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-04-01 05:09:21,178 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 05:09:21,178 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 05:09:21,178 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 05:09:21,178 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 05:09:21,178 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 05:09:21,179 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-01 05:09:21,179 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-01 05:09:21,179 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-04-01 05:09:21,179 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 05:09:21,179 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 05:09:21,179 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 05:09:21,179 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 05:09:21,179 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 05:09:21,180 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 05:09:21,180 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 05:09:21,247 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 05:09:21,250 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 05:09:21,452 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 05:09:21,492 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 05:09:21,508 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-04-01 05:09:21,511 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 05:09:21 BoogieIcfgContainer [2023-04-01 05:09:21,511 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 05:09:21,513 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 05:09:21,513 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 05:09:21,516 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 05:09:21,516 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 05:09:20" (1/3) ... [2023-04-01 05:09:21,517 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40cdb40f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 05:09:21, skipping insertion in model container [2023-04-01 05:09:21,517 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:09:21" (2/3) ... [2023-04-01 05:09:21,517 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40cdb40f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 05:09:21, skipping insertion in model container [2023-04-01 05:09:21,517 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 05:09:21" (3/3) ... [2023-04-01 05:09:21,518 INFO L112 eAbstractionObserver]: Analyzing ICFG fermat2-ll.c [2023-04-01 05:09:21,549 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 05:09:21,550 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 05:09:21,610 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 05:09:21,616 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;@387c3ad4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-01 05:09:21,616 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 05:09:21,620 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 13 states have internal predecessors, (16), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-04-01 05:09:21,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-04-01 05:09:21,627 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 05:09:21,628 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 05:09:21,629 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 05:09:21,636 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 05:09:21,636 INFO L85 PathProgramCache]: Analyzing trace with hash 776607170, now seen corresponding path program 1 times [2023-04-01 05:09:21,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 05:09:21,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289994591] [2023-04-01 05:09:21,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 05:09:21,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 05:09:21,733 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-01 05:09:21,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1914665643] [2023-04-01 05:09:21,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 05:09:21,735 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 05:09:21,735 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 05:09:21,737 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 05:09:21,739 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-04-01 05:09:21,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 05:09:21,835 INFO L262 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 12 conjunts are in the unsatisfiable core [2023-04-01 05:09:21,840 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 05:09:22,090 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-04-01 05:09:22,090 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 05:09:22,091 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 05:09:22,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289994591] [2023-04-01 05:09:22,091 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-01 05:09:22,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1914665643] [2023-04-01 05:09:22,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1914665643] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 05:09:22,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 05:09:22,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-01 05:09:22,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070394327] [2023-04-01 05:09:22,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 05:09:22,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 05:09:22,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 05:09:22,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 05:09:22,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-01 05:09:22,124 INFO L87 Difference]: Start difference. First operand has 24 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 13 states have internal predecessors, (16), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-01 05:09:22,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 05:09:22,257 INFO L93 Difference]: Finished difference Result 48 states and 63 transitions. [2023-04-01 05:09:22,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 05:09:22,266 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 17 [2023-04-01 05:09:22,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 05:09:22,273 INFO L225 Difference]: With dead ends: 48 [2023-04-01 05:09:22,273 INFO L226 Difference]: Without dead ends: 28 [2023-04-01 05:09:22,275 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-01 05:09:22,278 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 7 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 05:09:22,279 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 63 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 05:09:22,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2023-04-01 05:09:22,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 26. [2023-04-01 05:09:22,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 16 states have internal predecessors, (16), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2023-04-01 05:09:22,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2023-04-01 05:09:22,327 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 28 transitions. Word has length 17 [2023-04-01 05:09:22,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 05:09:22,327 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 28 transitions. [2023-04-01 05:09:22,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-01 05:09:22,327 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions. [2023-04-01 05:09:22,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-04-01 05:09:22,345 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 05:09:22,347 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 05:09:22,365 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-04-01 05:09:22,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-04-01 05:09:22,548 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 05:09:22,549 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 05:09:22,549 INFO L85 PathProgramCache]: Analyzing trace with hash 1130132655, now seen corresponding path program 1 times [2023-04-01 05:09:22,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 05:09:22,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633212884] [2023-04-01 05:09:22,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 05:09:22,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 05:09:22,560 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-01 05:09:22,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2115694695] [2023-04-01 05:09:22,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 05:09:22,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 05:09:22,561 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 05:09:22,564 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 05:09:22,566 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-04-01 05:09:22,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 05:09:22,633 INFO L262 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 18 conjunts are in the unsatisfiable core [2023-04-01 05:09:22,637 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 05:09:22,879 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-04-01 05:09:22,880 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 05:09:23,053 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-04-01 05:09:23,056 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 05:09:23,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633212884] [2023-04-01 05:09:23,060 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-01 05:09:23,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2115694695] [2023-04-01 05:09:23,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2115694695] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 05:09:23,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2068133223] [2023-04-01 05:09:23,088 INFO L159 IcfgInterpreter]: Started Sifa with 20 locations of interest [2023-04-01 05:09:23,088 INFO L166 IcfgInterpreter]: Building call graph [2023-04-01 05:09:23,091 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-01 05:09:23,095 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-01 05:09:23,095 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-01 05:09:23,167 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 9 for LOIs [2023-04-01 05:09:23,494 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 13 for LOIs [2023-04-01 05:09:23,517 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 9 for LOIs [2023-04-01 05:09:23,519 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2023-04-01 05:09:23,525 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-01 05:09:24,000 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '338#(and (<= 1 |#StackHeapBarrier|) (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (= |#NULL.base| 0))' at error location [2023-04-01 05:09:24,000 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-01 05:09:24,000 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-04-01 05:09:24,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7] total 14 [2023-04-01 05:09:24,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577907481] [2023-04-01 05:09:24,001 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-04-01 05:09:24,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-04-01 05:09:24,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 05:09:24,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-04-01 05:09:24,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=559, Unknown=0, NotChecked=0, Total=650 [2023-04-01 05:09:24,004 INFO L87 Difference]: Start difference. First operand 26 states and 28 transitions. Second operand has 14 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 11 states have internal predecessors, (20), 4 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) [2023-04-01 05:09:24,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 05:09:24,236 INFO L93 Difference]: Finished difference Result 26 states and 28 transitions. [2023-04-01 05:09:24,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-04-01 05:09:24,237 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 11 states have internal predecessors, (20), 4 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) Word has length 23 [2023-04-01 05:09:24,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 05:09:24,237 INFO L225 Difference]: With dead ends: 26 [2023-04-01 05:09:24,237 INFO L226 Difference]: Without dead ends: 0 [2023-04-01 05:09:24,238 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 42 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=106, Invalid=650, Unknown=0, NotChecked=0, Total=756 [2023-04-01 05:09:24,239 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 13 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-01 05:09:24,240 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 53 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-01 05:09:24,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-04-01 05:09:24,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-04-01 05:09:24,241 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) [2023-04-01 05:09:24,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-04-01 05:09:24,241 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 23 [2023-04-01 05:09:24,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 05:09:24,241 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-04-01 05:09:24,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 11 states have internal predecessors, (20), 4 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) [2023-04-01 05:09:24,241 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-04-01 05:09:24,241 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-04-01 05:09:24,244 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-04-01 05:09:24,250 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-04-01 05:09:24,450 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,SelfDestructingSolverStorable1 [2023-04-01 05:09:24,452 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-04-01 05:09:24,771 INFO L899 garLoopResultBuilder]: For program point reach_errorEXIT(line 5) no Hoare annotation was computed. [2023-04-01 05:09:24,771 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line 5) no Hoare annotation was computed. [2023-04-01 05:09:24,771 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 8 10) the Hoare annotation is: true [2023-04-01 05:09:24,772 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 8 10) no Hoare annotation was computed. [2023-04-01 05:09:24,772 INFO L895 garLoopResultBuilder]: At program point L33-2(lines 33 44) the Hoare annotation is: (let ((.cse0 (+ (* main_~v~0 2) (* main_~u~0 main_~u~0))) (.cse1 (* main_~v~0 main_~v~0)) (.cse2 (* main_~u~0 2)) (.cse3 (* main_~A~0 4))) (and (= .cse0 (+ .cse1 .cse2 .cse3 (* main_~r~0 4))) (exists ((main_~R~0 Int)) (< (+ (* main_~R~0 main_~R~0) 1) (+ main_~A~0 (* main_~R~0 2)))) (= .cse0 (+ .cse1 .cse2 .cse3)))) [2023-04-01 05:09:24,772 INFO L899 garLoopResultBuilder]: For program point L27(line 27) no Hoare annotation was computed. [2023-04-01 05:09:24,772 INFO L902 garLoopResultBuilder]: At program point L25(line 25) the Hoare annotation is: true [2023-04-01 05:09:24,772 INFO L899 garLoopResultBuilder]: For program point mainEXIT(lines 19 49) no Hoare annotation was computed. [2023-04-01 05:09:24,772 INFO L895 garLoopResultBuilder]: At program point L25-1(line 25) the Hoare annotation is: (exists ((main_~R~0 Int)) (< (+ (* main_~R~0 main_~R~0) 1) (+ main_~A~0 (* main_~R~0 2)))) [2023-04-01 05:09:24,773 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 19 49) the Hoare annotation is: true [2023-04-01 05:09:24,773 INFO L895 garLoopResultBuilder]: At program point L34(line 34) the Hoare annotation is: (and (= (+ (* main_~v~0 2) (* main_~u~0 main_~u~0)) (+ (* main_~v~0 main_~v~0) (* main_~u~0 2) (* main_~A~0 4) (* main_~r~0 4))) (exists ((main_~R~0 Int)) (< (+ (* main_~R~0 main_~R~0) 1) (+ main_~A~0 (* main_~R~0 2))))) [2023-04-01 05:09:24,773 INFO L899 garLoopResultBuilder]: For program point L34-1(lines 33 44) no Hoare annotation was computed. [2023-04-01 05:09:24,773 INFO L899 garLoopResultBuilder]: For program point L47(line 47) no Hoare annotation was computed. [2023-04-01 05:09:24,773 INFO L895 garLoopResultBuilder]: At program point L37-2(lines 33 44) the Hoare annotation is: (and (= (+ (* main_~v~0 2) (* main_~u~0 main_~u~0)) (+ (* main_~v~0 main_~v~0) (* main_~u~0 2) (* main_~A~0 4) (* main_~r~0 4))) (exists ((main_~R~0 Int)) (< (+ (* main_~R~0 main_~R~0) 1) (+ main_~A~0 (* main_~R~0 2))))) [2023-04-01 05:09:24,774 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(line -1) the Hoare annotation is: true [2023-04-01 05:09:24,774 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2023-04-01 05:09:24,774 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-04-01 05:09:24,774 INFO L902 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: true [2023-04-01 05:09:24,774 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2023-04-01 05:09:24,774 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(line -1) the Hoare annotation is: true [2023-04-01 05:09:24,774 INFO L899 garLoopResultBuilder]: For program point L13(lines 13 14) no Hoare annotation was computed. [2023-04-01 05:09:24,774 INFO L899 garLoopResultBuilder]: For program point L12(lines 12 15) no Hoare annotation was computed. [2023-04-01 05:09:24,774 INFO L899 garLoopResultBuilder]: For program point L12-2(lines 11 17) no Hoare annotation was computed. [2023-04-01 05:09:24,775 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 11 17) no Hoare annotation was computed. [2023-04-01 05:09:24,775 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 11 17) the Hoare annotation is: true [2023-04-01 05:09:24,775 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2023-04-01 05:09:24,778 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-04-01 05:09:24,779 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-04-01 05:09:24,785 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] [2023-04-01 05:09:24,786 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] [2023-04-01 05:09:24,786 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] [2023-04-01 05:09:24,791 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] [2023-04-01 05:09:24,791 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] [2023-04-01 05:09:24,791 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] [2023-04-01 05:09:24,792 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.04 05:09:24 BoogieIcfgContainer [2023-04-01 05:09:24,792 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-04-01 05:09:24,793 INFO L158 Benchmark]: Toolchain (without parser) took 3900.52ms. Allocated memory is still 307.2MB. Free memory was 262.7MB in the beginning and 249.0MB in the end (delta: 13.7MB). Peak memory consumption was 14.5MB. Max. memory is 8.0GB. [2023-04-01 05:09:24,793 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 181.4MB. Free memory is still 134.8MB. There was no memory consumed. Max. memory is 8.0GB. [2023-04-01 05:09:24,793 INFO L158 Benchmark]: CACSL2BoogieTranslator took 193.16ms. Allocated memory is still 307.2MB. Free memory was 262.7MB in the beginning and 252.2MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-04-01 05:09:24,794 INFO L158 Benchmark]: Boogie Preprocessor took 30.55ms. Allocated memory is still 307.2MB. Free memory was 252.2MB in the beginning and 250.8MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-04-01 05:09:24,794 INFO L158 Benchmark]: RCFGBuilder took 391.74ms. Allocated memory is still 307.2MB. Free memory was 250.5MB in the beginning and 238.2MB in the end (delta: 12.3MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2023-04-01 05:09:24,794 INFO L158 Benchmark]: TraceAbstraction took 3279.06ms. Allocated memory is still 307.2MB. Free memory was 237.5MB in the beginning and 249.0MB in the end (delta: -11.5MB). There was no memory consumed. Max. memory is 8.0GB. [2023-04-01 05:09:24,795 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 181.4MB. Free memory is still 134.8MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 193.16ms. Allocated memory is still 307.2MB. Free memory was 262.7MB in the beginning and 252.2MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 30.55ms. Allocated memory is still 307.2MB. Free memory was 252.2MB in the beginning and 250.8MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 391.74ms. Allocated memory is still 307.2MB. Free memory was 250.5MB in the beginning and 238.2MB in the end (delta: 12.3MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * TraceAbstraction took 3279.06ms. Allocated memory is still 307.2MB. Free memory was 237.5MB in the beginning and 249.0MB in the end (delta: -11.5MB). There was no memory consumed. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] * 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: 14]: 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 6 procedures, 26 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 3.2s, OverallIterations: 2, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 22 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 20 mSDsluCounter, 116 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 88 mSDsCounter, 8 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 137 IncrementalHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 8 mSolverCounterUnsat, 28 mSDtfsCounter, 137 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 87 GetRequests, 55 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred in iteration=1, InterpolantAutomatonStates: 13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 11 LocationsWithAnnotation, 16 PreInvPairs, 21 NumberOfFragments, 139 HoareAnnotationTreeSize, 16 FomulaSimplifications, 10 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 11 FomulaSimplificationsInter, 118 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 40 NumberOfCodeBlocks, 40 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 60 ConstructedInterpolants, 6 QuantifiedInterpolants, 302 SizeOfPredicates, 7 NumberOfNonLiveVariables, 163 ConjunctsInSsa, 30 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 7/10 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: 33]: Loop Invariant [2023-04-01 05:09:24,800 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] [2023-04-01 05:09:24,801 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] [2023-04-01 05:09:24,801 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] [2023-04-01 05:09:24,801 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] [2023-04-01 05:09:24,801 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] [2023-04-01 05:09:24,801 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] Derived loop invariant: v * 2 + u * u == v * v + u * 2 + A * 4 + r * 4 && (\exists main_~R~0 : int :: main_~R~0 * main_~R~0 + 1 < A + main_~R~0 * 2) RESULT: Ultimate proved your program to be correct! [2023-04-01 05:09:24,813 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...