/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/ps2-ll.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 05:10:19,916 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 05:10:19,925 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 05:10:19,956 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-01 05:10:19,957 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-01 05:10:19,959 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-01 05:10:19,962 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-01 05:10:19,963 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-01 05:10:19,964 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-01 05:10:19,968 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-01 05:10:19,969 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-01 05:10:19,970 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-01 05:10:19,970 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-01 05:10:19,972 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-01 05:10:19,973 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-01 05:10:19,974 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-01 05:10:19,974 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-01 05:10:19,975 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-01 05:10:19,976 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-01 05:10:19,980 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-01 05:10:19,980 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-01 05:10:19,981 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-01 05:10:19,982 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-01 05:10:19,983 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-01 05:10:19,989 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-01 05:10:19,989 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-01 05:10:19,989 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-01 05:10:19,991 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-01 05:10:19,991 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-01 05:10:19,991 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-01 05:10:19,991 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-01 05:10:19,992 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-01 05:10:19,993 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-01 05:10:19,993 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-01 05:10:19,994 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-01 05:10:19,994 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-01 05:10:19,994 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-01 05:10:19,994 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-01 05:10:19,995 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-01 05:10:19,995 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-01 05:10:19,996 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-01 05:10:19,997 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 05:10:20,024 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 05:10:20,024 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 05:10:20,024 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 05:10:20,024 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 05:10:20,027 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 05:10:20,027 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 05:10:20,027 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-01 05:10:20,027 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-01 05:10:20,027 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-01 05:10:20,027 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-01 05:10:20,028 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-01 05:10:20,028 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-01 05:10:20,028 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-01 05:10:20,028 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-01 05:10:20,028 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-01 05:10:20,028 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-01 05:10:20,029 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-01 05:10:20,029 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-01 05:10:20,029 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 05:10:20,029 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 05:10:20,030 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 05:10:20,030 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 05:10:20,030 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 05:10:20,030 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 05:10:20,030 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 05:10:20,030 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 05:10:20,031 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 05:10:20,031 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 05:10:20,031 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 05:10:20,031 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 05:10:20,031 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 05:10:20,031 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 05:10:20,031 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 05:10:20,031 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 05:10:20,031 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-01 05:10:20,031 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 05:10:20,032 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 05:10:20,032 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-01 05:10:20,032 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 05:10:20,032 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 05:10:20,032 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-01 05:10:20,032 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> OctagonDomain [2023-04-01 05:10:20,248 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 05:10:20,268 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 05:10:20,269 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 05:10:20,270 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 05:10:20,271 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 05:10:20,272 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench/ps2-ll.c [2023-04-01 05:10:21,347 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 05:10:21,455 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 05:10:21,456 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench/ps2-ll.c [2023-04-01 05:10:21,468 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9818c11be/91e914708b0d44cea5eba7d1f5524369/FLAG18dec85bc [2023-04-01 05:10:21,498 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9818c11be/91e914708b0d44cea5eba7d1f5524369 [2023-04-01 05:10:21,500 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 05:10:21,513 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 05:10:21,514 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 05:10:21,515 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 05:10:21,521 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 05:10:21,521 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 05:10:21" (1/1) ... [2023-04-01 05:10:21,522 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f867666 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:10:21, skipping insertion in model container [2023-04-01 05:10:21,523 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 05:10:21" (1/1) ... [2023-04-01 05:10:21,529 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 05:10:21,548 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 05:10:21,635 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/ps2-ll.c[454,467] [2023-04-01 05:10:21,641 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 05:10:21,647 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 05:10:21,654 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/ps2-ll.c[454,467] [2023-04-01 05:10:21,656 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 05:10:21,664 INFO L208 MainTranslator]: Completed translation [2023-04-01 05:10:21,664 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:10:21 WrapperNode [2023-04-01 05:10:21,664 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 05:10:21,665 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 05:10:21,665 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 05:10:21,665 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 05:10:21,671 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:10:21" (1/1) ... [2023-04-01 05:10:21,672 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:10:21" (1/1) ... [2023-04-01 05:10:21,675 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:10:21" (1/1) ... [2023-04-01 05:10:21,675 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:10:21" (1/1) ... [2023-04-01 05:10:21,677 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:10:21" (1/1) ... [2023-04-01 05:10:21,679 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:10:21" (1/1) ... [2023-04-01 05:10:21,680 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:10:21" (1/1) ... [2023-04-01 05:10:21,680 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:10:21" (1/1) ... [2023-04-01 05:10:21,681 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 05:10:21,682 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 05:10:21,682 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 05:10:21,682 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 05:10:21,682 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:10:21" (1/1) ... [2023-04-01 05:10:21,686 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 05:10:21,692 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 05:10:21,710 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 05:10:21,715 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 05:10:21,736 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 05:10:21,736 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 05:10:21,736 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 05:10:21,736 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-01 05:10:21,736 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-04-01 05:10:21,736 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 05:10:21,736 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 05:10:21,736 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 05:10:21,736 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 05:10:21,736 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 05:10:21,736 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-01 05:10:21,737 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-01 05:10:21,737 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-04-01 05:10:21,737 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 05:10:21,737 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 05:10:21,737 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 05:10:21,737 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 05:10:21,737 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 05:10:21,737 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 05:10:21,737 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 05:10:21,782 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 05:10:21,783 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 05:10:21,884 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 05:10:21,907 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 05:10:21,907 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-04-01 05:10:21,909 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 05:10:21 BoogieIcfgContainer [2023-04-01 05:10:21,909 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 05:10:21,910 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 05:10:21,911 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 05:10:21,917 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 05:10:21,917 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 05:10:21" (1/3) ... [2023-04-01 05:10:21,918 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16b6a491 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 05:10:21, skipping insertion in model container [2023-04-01 05:10:21,918 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:10:21" (2/3) ... [2023-04-01 05:10:21,918 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16b6a491 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 05:10:21, skipping insertion in model container [2023-04-01 05:10:21,918 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 05:10:21" (3/3) ... [2023-04-01 05:10:21,919 INFO L112 eAbstractionObserver]: Analyzing ICFG ps2-ll.c [2023-04-01 05:10:21,932 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 05:10:21,932 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 05:10:21,979 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 05:10:21,984 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;@5076cdde, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-01 05:10:21,984 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 05:10:21,987 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 10 states have (on average 1.4) internal successors, (14), 11 states have internal predecessors, (14), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-04-01 05:10:21,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-04-01 05:10:21,993 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 05:10:21,993 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 05:10:21,994 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 05:10:21,999 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 05:10:21,999 INFO L85 PathProgramCache]: Analyzing trace with hash -2018364504, now seen corresponding path program 1 times [2023-04-01 05:10:22,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 05:10:22,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819542244] [2023-04-01 05:10:22,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 05:10:22,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 05:10:22,079 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-01 05:10:22,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1266207102] [2023-04-01 05:10:22,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 05:10:22,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 05:10:22,080 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 05:10:22,093 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 05:10:22,132 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 05:10:22,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 05:10:22,178 INFO L262 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 10 conjunts are in the unsatisfiable core [2023-04-01 05:10:22,181 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 05:10:22,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 05:10:22,281 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 05:10:22,282 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 05:10:22,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819542244] [2023-04-01 05:10:22,282 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-01 05:10:22,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1266207102] [2023-04-01 05:10:22,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1266207102] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 05:10:22,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 05:10:22,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-01 05:10:22,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980696222] [2023-04-01 05:10:22,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 05:10:22,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 05:10:22,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 05:10:22,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 05:10:22,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-01 05:10:22,346 INFO L87 Difference]: Start difference. First operand has 19 states, 10 states have (on average 1.4) internal successors, (14), 11 states have internal predecessors, (14), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 5 states, 5 states have (on average 1.2) internal successors, (6), 4 states have internal predecessors, (6), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 05:10:22,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 05:10:22,445 INFO L93 Difference]: Finished difference Result 43 states and 57 transitions. [2023-04-01 05:10:22,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 05:10:22,449 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.2) internal successors, (6), 4 states have internal predecessors, (6), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2023-04-01 05:10:22,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 05:10:22,454 INFO L225 Difference]: With dead ends: 43 [2023-04-01 05:10:22,454 INFO L226 Difference]: Without dead ends: 22 [2023-04-01 05:10:22,456 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 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 05:10:22,459 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 7 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 05:10:22,459 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 47 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 05:10:22,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2023-04-01 05:10:22,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2023-04-01 05:10:22,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 14 states have internal predecessors, (15), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-01 05:10:22,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2023-04-01 05:10:22,495 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 10 [2023-04-01 05:10:22,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 05:10:22,496 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2023-04-01 05:10:22,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.2) internal successors, (6), 4 states have internal predecessors, (6), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 05:10:22,496 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2023-04-01 05:10:22,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-04-01 05:10:22,497 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 05:10:22,497 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 05:10:22,507 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 05:10:22,703 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 05:10:22,704 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 05:10:22,704 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 05:10:22,704 INFO L85 PathProgramCache]: Analyzing trace with hash 207391226, now seen corresponding path program 1 times [2023-04-01 05:10:22,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 05:10:22,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2147297681] [2023-04-01 05:10:22,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 05:10:22,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 05:10:22,720 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-01 05:10:22,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1031063546] [2023-04-01 05:10:22,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 05:10:22,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 05:10:22,721 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 05:10:22,732 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 05:10:22,758 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 05:10:22,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 05:10:22,814 INFO L262 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 19 conjunts are in the unsatisfiable core [2023-04-01 05:10:22,817 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 05:10:22,909 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 05:10:22,910 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 05:10:22,995 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 05:10:22,995 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 05:10:22,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2147297681] [2023-04-01 05:10:22,995 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-01 05:10:22,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1031063546] [2023-04-01 05:10:22,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1031063546] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 05:10:22,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1830393380] [2023-04-01 05:10:23,008 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2023-04-01 05:10:23,009 INFO L166 IcfgInterpreter]: Building call graph [2023-04-01 05:10:23,011 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-01 05:10:23,014 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-01 05:10:23,014 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-01 05:10:23,129 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 9 for LOIs [2023-04-01 05:10:23,441 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 77 for LOIs [2023-04-01 05:10:23,565 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2023-04-01 05:10:23,569 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-01 05:10:24,034 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '258#(and (exists ((v_main_~c~0_BEFORE_CALL_9 Int) (v_main_~k~0_BEFORE_CALL_9 Int) (v_main_~y~0_BEFORE_CALL_13 Int) (v_main_~x~0_BEFORE_CALL_13 Int)) (and (or (and (= v_main_~c~0_BEFORE_CALL_9 v_main_~y~0_BEFORE_CALL_13) (<= v_main_~y~0_BEFORE_CALL_13 (+ 2147483649 v_main_~k~0_BEFORE_CALL_9)) (<= 1 |#StackHeapBarrier|) (<= 0 (+ 2147483647 |#StackHeapBarrier| v_main_~k~0_BEFORE_CALL_9)) (<= v_main_~c~0_BEFORE_CALL_9 (+ 4294967295 |#StackHeapBarrier|)) (<= v_main_~k~0_BEFORE_CALL_9 2147483647) (<= (+ v_main_~c~0_BEFORE_CALL_9 v_main_~k~0_BEFORE_CALL_9) 6442450943) (<= 0 (+ 2147483647 v_main_~c~0_BEFORE_CALL_9 v_main_~k~0_BEFORE_CALL_9)) (<= v_main_~y~0_BEFORE_CALL_13 (+ 4294967295 |#StackHeapBarrier|)) (<= v_main_~y~0_BEFORE_CALL_13 4294967296) (<= 2 (+ v_main_~c~0_BEFORE_CALL_9 v_main_~y~0_BEFORE_CALL_13)) (<= 0 (+ 2147483647 v_main_~y~0_BEFORE_CALL_13 v_main_~k~0_BEFORE_CALL_9)) (<= 1 v_main_~y~0_BEFORE_CALL_13) (<= 1 v_main_~c~0_BEFORE_CALL_9) (<= 2 (+ v_main_~c~0_BEFORE_CALL_9 |#StackHeapBarrier|)) (<= v_main_~k~0_BEFORE_CALL_9 (+ v_main_~y~0_BEFORE_CALL_13 2147483646)) (<= 2 (+ v_main_~y~0_BEFORE_CALL_13 |#StackHeapBarrier|)) (= |#NULL.offset| 0) (<= 0 (+ 2147483648 v_main_~k~0_BEFORE_CALL_9)) (<= v_main_~c~0_BEFORE_CALL_9 4294967296) (<= v_main_~k~0_BEFORE_CALL_9 (+ |#StackHeapBarrier| 2147483646)) (<= v_main_~c~0_BEFORE_CALL_9 v_main_~k~0_BEFORE_CALL_9) (<= (+ v_main_~y~0_BEFORE_CALL_13 v_main_~k~0_BEFORE_CALL_9) 6442450943) (<= (+ v_main_~c~0_BEFORE_CALL_9 v_main_~y~0_BEFORE_CALL_13) 8589934592) (<= v_main_~k~0_BEFORE_CALL_9 (+ v_main_~c~0_BEFORE_CALL_9 2147483646)) (= |#NULL.base| 0)) (and (<= 1 |#StackHeapBarrier|) (<= v_main_~k~0_BEFORE_CALL_9 2147483647) (= v_main_~y~0_BEFORE_CALL_13 0) (= v_main_~c~0_BEFORE_CALL_9 0) (= v_main_~x~0_BEFORE_CALL_13 0) (= |#NULL.offset| 0) (<= 0 (+ 2147483648 v_main_~k~0_BEFORE_CALL_9)) (= |#NULL.base| 0))) (not (= (* 2 v_main_~x~0_BEFORE_CALL_13) (+ v_main_~y~0_BEFORE_CALL_13 (* v_main_~y~0_BEFORE_CALL_13 v_main_~y~0_BEFORE_CALL_13)))))) (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0))' at error location [2023-04-01 05:10:24,034 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-01 05:10:24,034 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-04-01 05:10:24,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 11 [2023-04-01 05:10:24,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640191520] [2023-04-01 05:10:24,035 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-04-01 05:10:24,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-01 05:10:24,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 05:10:24,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-01 05:10:24,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=313, Unknown=0, NotChecked=0, Total=380 [2023-04-01 05:10:24,037 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand has 11 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 10 states have internal predecessors, (19), 4 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-04-01 05:10:24,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 05:10:24,102 INFO L93 Difference]: Finished difference Result 26 states and 29 transitions. [2023-04-01 05:10:24,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-01 05:10:24,103 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 10 states have internal predecessors, (19), 4 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 17 [2023-04-01 05:10:24,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 05:10:24,103 INFO L225 Difference]: With dead ends: 26 [2023-04-01 05:10:24,104 INFO L226 Difference]: Without dead ends: 0 [2023-04-01 05:10:24,106 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2023-04-01 05:10:24,108 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 10 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-01 05:10:24,111 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 55 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-01 05:10:24,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-04-01 05:10:24,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-04-01 05:10:24,113 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 05:10:24,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-04-01 05:10:24,114 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2023-04-01 05:10:24,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 05:10:24,114 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-04-01 05:10:24,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 10 states have internal predecessors, (19), 4 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-04-01 05:10:24,114 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-04-01 05:10:24,114 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-04-01 05:10:24,116 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-04-01 05:10:24,121 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 05:10:24,320 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 05:10:24,323 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-04-01 05:10:24,352 INFO L899 garLoopResultBuilder]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2023-04-01 05:10:24,352 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line 3) no Hoare annotation was computed. [2023-04-01 05:10:24,353 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(lines 6 8) no Hoare annotation was computed. [2023-04-01 05:10:24,353 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 6 8) no Hoare annotation was computed. [2023-04-01 05:10:24,353 INFO L895 garLoopResultBuilder]: At program point L27(line 27) the Hoare annotation is: (= (* main_~x~0 2) (+ main_~y~0 (* main_~y~0 main_~y~0))) [2023-04-01 05:10:24,353 INFO L899 garLoopResultBuilder]: For program point L27-1(lines 26 35) no Hoare annotation was computed. [2023-04-01 05:10:24,353 INFO L899 garLoopResultBuilder]: For program point mainEXIT(lines 17 39) no Hoare annotation was computed. [2023-04-01 05:10:24,353 INFO L895 garLoopResultBuilder]: At program point L26-2(lines 26 35) the Hoare annotation is: (= (* main_~x~0 2) (+ main_~y~0 (* main_~y~0 main_~y~0))) [2023-04-01 05:10:24,353 INFO L895 garLoopResultBuilder]: At program point L26-3(lines 26 35) the Hoare annotation is: (= (* main_~x~0 2) (+ main_~y~0 (* main_~y~0 main_~y~0))) [2023-04-01 05:10:24,353 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 17 39) the Hoare annotation is: true [2023-04-01 05:10:24,353 INFO L899 garLoopResultBuilder]: For program point L36(line 36) no Hoare annotation was computed. [2023-04-01 05:10:24,354 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(line -1) the Hoare annotation is: true [2023-04-01 05:10:24,354 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2023-04-01 05:10:24,354 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-04-01 05:10:24,354 INFO L902 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: true [2023-04-01 05:10:24,354 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2023-04-01 05:10:24,354 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(line -1) the Hoare annotation is: true [2023-04-01 05:10:24,354 INFO L899 garLoopResultBuilder]: For program point L11(lines 11 12) no Hoare annotation was computed. [2023-04-01 05:10:24,355 INFO L899 garLoopResultBuilder]: For program point L10(lines 10 13) no Hoare annotation was computed. [2023-04-01 05:10:24,355 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 9 15) no Hoare annotation was computed. [2023-04-01 05:10:24,355 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 9 15) the Hoare annotation is: true [2023-04-01 05:10:24,355 INFO L899 garLoopResultBuilder]: For program point L10-2(lines 9 15) no Hoare annotation was computed. [2023-04-01 05:10:24,355 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2023-04-01 05:10:24,357 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-04-01 05:10:24,358 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-04-01 05:10:24,372 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.04 05:10:24 BoogieIcfgContainer [2023-04-01 05:10:24,372 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-04-01 05:10:24,372 INFO L158 Benchmark]: Toolchain (without parser) took 2859.58ms. Allocated memory is still 309.3MB. Free memory was 258.3MB in the beginning and 131.1MB in the end (delta: 127.2MB). Peak memory consumption was 127.7MB. Max. memory is 8.0GB. [2023-04-01 05:10:24,372 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 185.6MB. Free memory is still 132.9MB. There was no memory consumed. Max. memory is 8.0GB. [2023-04-01 05:10:24,373 INFO L158 Benchmark]: CACSL2BoogieTranslator took 150.01ms. Allocated memory is still 309.3MB. Free memory was 257.8MB in the beginning and 247.7MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-04-01 05:10:24,373 INFO L158 Benchmark]: Boogie Preprocessor took 16.21ms. Allocated memory is still 309.3MB. Free memory was 247.7MB in the beginning and 246.2MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-04-01 05:10:24,373 INFO L158 Benchmark]: RCFGBuilder took 227.58ms. Allocated memory is still 309.3MB. Free memory was 246.2MB in the beginning and 234.7MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-04-01 05:10:24,373 INFO L158 Benchmark]: TraceAbstraction took 2461.48ms. Allocated memory is still 309.3MB. Free memory was 234.2MB in the beginning and 131.1MB in the end (delta: 103.0MB). Peak memory consumption was 103.6MB. Max. memory is 8.0GB. [2023-04-01 05:10:24,374 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 185.6MB. Free memory is still 132.9MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 150.01ms. Allocated memory is still 309.3MB. Free memory was 257.8MB in the beginning and 247.7MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 16.21ms. Allocated memory is still 309.3MB. Free memory was 247.7MB in the beginning and 246.2MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 227.58ms. Allocated memory is still 309.3MB. Free memory was 246.2MB in the beginning and 234.7MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * TraceAbstraction took 2461.48ms. Allocated memory is still 309.3MB. Free memory was 234.2MB in the beginning and 131.1MB in the end (delta: 103.0MB). Peak memory consumption was 103.6MB. 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: 12]: 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, 23 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.4s, OverallIterations: 2, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 20 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 17 mSDsluCounter, 102 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 78 mSDsCounter, 9 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 92 IncrementalHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 9 mSolverCounterUnsat, 24 mSDtfsCounter, 92 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 61 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred in iteration=1, InterpolantAutomatonStates: 12, 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, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 15 PreInvPairs, 24 NumberOfFragments, 32 HoareAnnotationTreeSize, 15 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 45 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 27 NumberOfCodeBlocks, 27 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 41 ConstructedInterpolants, 0 QuantifiedInterpolants, 142 SizeOfPredicates, 3 NumberOfNonLiveVariables, 133 ConjunctsInSsa, 29 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 4/8 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: 26]: Loop Invariant Derived loop invariant: x * 2 == y + y * y RESULT: Ultimate proved your program to be correct! [2023-04-01 05:10:24,388 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...