/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-scaling/fermat2-ll_valuebound2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-02 23:00:09,537 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-02 23:00:09,538 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-02 23:00:09,567 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-02 23:00:09,567 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-02 23:00:09,568 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-02 23:00:09,569 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-02 23:00:09,571 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-02 23:00:09,572 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-02 23:00:09,573 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-02 23:00:09,574 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-02 23:00:09,575 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-02 23:00:09,575 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-02 23:00:09,576 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-02 23:00:09,577 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-02 23:00:09,578 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-02 23:00:09,579 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-02 23:00:09,579 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-02 23:00:09,581 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-02 23:00:09,582 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-02 23:00:09,583 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-02 23:00:09,584 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-02 23:00:09,585 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-02 23:00:09,586 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-02 23:00:09,589 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-04-02 23:00:09,592 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-02 23:00:09,593 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-02 23:00:09,593 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-02 23:00:09,594 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-02 23:00:09,595 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-02 23:00:09,595 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-02 23:00:09,596 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-02 23:00:09,596 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-02 23:00:09,596 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-02 23:00:09,597 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-02 23:00:09,598 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-02 23:00:09,599 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf [2023-04-02 23:00:09,617 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-02 23:00:09,617 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-02 23:00:09,617 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-02 23:00:09,617 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-02 23:00:09,618 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-02 23:00:09,618 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-02 23:00:09,619 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-02 23:00:09,619 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-02 23:00:09,619 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-02 23:00:09,619 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-02 23:00:09,619 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-02 23:00:09,619 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-02 23:00:09,619 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-02 23:00:09,620 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-02 23:00:09,620 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-02 23:00:09,620 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-02 23:00:09,620 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-02 23:00:09,620 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-02 23:00:09,621 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-02 23:00:09,621 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-02 23:00:09,621 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-02 23:00:09,621 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-02 23:00:09,621 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-02 23:00:09,621 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-02 23:00:09,621 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-02 23:00:09,621 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-02 23:00:09,622 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-02 23:00:09,622 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-02 23:00:09,622 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-02 23:00:09,622 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-02 23:00:09,622 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-02 23:00:09,622 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-02 23:00:09,622 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 23:00:09,622 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-02 23:00:09,623 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-02 23:00:09,623 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-02 23:00:09,623 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-02 23:00:09,623 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-02 23:00:09,623 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-02 23:00:09,623 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-02 23:00:09,623 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-02 23:00:09,623 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> OctagonDomain [2023-04-02 23:00:09,860 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-02 23:00:09,877 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-02 23:00:09,879 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-02 23:00:09,881 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-02 23:00:09,881 INFO L275 PluginConnector]: CDTParser initialized [2023-04-02 23:00:09,882 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/fermat2-ll_valuebound2.c [2023-04-02 23:00:11,045 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-02 23:00:11,261 INFO L351 CDTParser]: Found 1 translation units. [2023-04-02 23:00:11,262 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/fermat2-ll_valuebound2.c [2023-04-02 23:00:11,267 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6fb5ebd32/e854b1c677a4406daf77608ea817686e/FLAG1cdba60f6 [2023-04-02 23:00:11,278 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6fb5ebd32/e854b1c677a4406daf77608ea817686e [2023-04-02 23:00:11,280 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-02 23:00:11,281 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-02 23:00:11,282 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-02 23:00:11,282 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-02 23:00:11,285 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-02 23:00:11,285 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 11:00:11" (1/1) ... [2023-04-02 23:00:11,286 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65a72e4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:00:11, skipping insertion in model container [2023-04-02 23:00:11,286 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 11:00:11" (1/1) ... [2023-04-02 23:00:11,292 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-02 23:00:11,309 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-02 23:00:11,407 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-scaling/fermat2-ll_valuebound2.c[524,537] [2023-04-02 23:00:11,421 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 23:00:11,428 INFO L203 MainTranslator]: Completed pre-run [2023-04-02 23:00:11,439 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-scaling/fermat2-ll_valuebound2.c[524,537] [2023-04-02 23:00:11,452 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 23:00:11,463 INFO L208 MainTranslator]: Completed translation [2023-04-02 23:00:11,463 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:00:11 WrapperNode [2023-04-02 23:00:11,464 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-02 23:00:11,464 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-02 23:00:11,464 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-02 23:00:11,464 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-02 23:00:11,471 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:00:11" (1/1) ... [2023-04-02 23:00:11,471 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:00:11" (1/1) ... [2023-04-02 23:00:11,476 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:00:11" (1/1) ... [2023-04-02 23:00:11,476 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:00:11" (1/1) ... [2023-04-02 23:00:11,480 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:00:11" (1/1) ... [2023-04-02 23:00:11,482 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:00:11" (1/1) ... [2023-04-02 23:00:11,483 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:00:11" (1/1) ... [2023-04-02 23:00:11,484 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:00:11" (1/1) ... [2023-04-02 23:00:11,485 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-02 23:00:11,486 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-02 23:00:11,486 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-02 23:00:11,486 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-02 23:00:11,487 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:00:11" (1/1) ... [2023-04-02 23:00:11,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 23:00:11,506 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 23:00:11,523 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-04-02 23:00:11,524 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-04-02 23:00:11,564 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-02 23:00:11,564 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-02 23:00:11,564 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-02 23:00:11,566 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-02 23:00:11,566 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-04-02 23:00:11,566 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-02 23:00:11,566 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-02 23:00:11,567 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-02 23:00:11,567 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-02 23:00:11,567 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-02 23:00:11,567 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-02 23:00:11,567 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-02 23:00:11,567 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-04-02 23:00:11,567 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-02 23:00:11,567 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-02 23:00:11,567 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-02 23:00:11,568 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-02 23:00:11,568 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-02 23:00:11,568 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-02 23:00:11,568 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-02 23:00:11,636 INFO L236 CfgBuilder]: Building ICFG [2023-04-02 23:00:11,638 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-02 23:00:11,845 INFO L277 CfgBuilder]: Performing block encoding [2023-04-02 23:00:11,911 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-02 23:00:11,911 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-04-02 23:00:11,913 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 11:00:11 BoogieIcfgContainer [2023-04-02 23:00:11,913 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-02 23:00:11,915 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-02 23:00:11,915 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-02 23:00:11,918 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-02 23:00:11,918 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.04 11:00:11" (1/3) ... [2023-04-02 23:00:11,919 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b14686 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 11:00:11, skipping insertion in model container [2023-04-02 23:00:11,919 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:00:11" (2/3) ... [2023-04-02 23:00:11,919 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b14686 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 11:00:11, skipping insertion in model container [2023-04-02 23:00:11,919 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 11:00:11" (3/3) ... [2023-04-02 23:00:11,920 INFO L112 eAbstractionObserver]: Analyzing ICFG fermat2-ll_valuebound2.c [2023-04-02 23:00:11,952 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-02 23:00:11,953 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-02 23:00:12,006 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-02 23:00:12,016 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;@2697ebf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-02 23:00:12,016 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-02 23:00:12,020 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 14 states have internal predecessors, (17), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-04-02 23:00:12,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-04-02 23:00:12,027 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 23:00:12,027 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 23:00:12,028 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 23:00:12,034 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 23:00:12,035 INFO L85 PathProgramCache]: Analyzing trace with hash 863288626, now seen corresponding path program 1 times [2023-04-02 23:00:12,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 23:00:12,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543024606] [2023-04-02 23:00:12,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:00:12,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 23:00:12,189 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 23:00:12,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1318780805] [2023-04-02 23:00:12,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:00:12,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 23:00:12,191 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 23:00:12,197 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 23:00:12,221 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-04-02 23:00:12,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:00:12,311 INFO L262 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 1 conjunts are in the unsatisfiable core [2023-04-02 23:00:12,315 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 23:00:12,335 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-04-02 23:00:12,335 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-02 23:00:12,335 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 23:00:12,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543024606] [2023-04-02 23:00:12,336 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 23:00:12,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1318780805] [2023-04-02 23:00:12,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1318780805] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 23:00:12,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 23:00:12,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-04-02 23:00:12,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045576364] [2023-04-02 23:00:12,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 23:00:12,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-04-02 23:00:12,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 23:00:12,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-04-02 23:00:12,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-04-02 23:00:12,384 INFO L87 Difference]: Start difference. First operand has 27 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 14 states have internal predecessors, (17), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-04-02 23:00:12,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 23:00:12,421 INFO L93 Difference]: Finished difference Result 41 states and 52 transitions. [2023-04-02 23:00:12,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-04-02 23:00:12,424 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 24 [2023-04-02 23:00:12,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 23:00:12,431 INFO L225 Difference]: With dead ends: 41 [2023-04-02 23:00:12,431 INFO L226 Difference]: Without dead ends: 23 [2023-04-02 23:00:12,435 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-04-02 23:00:12,441 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-02 23:00:12,443 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 27 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-02 23:00:12,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2023-04-02 23:00:12,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2023-04-02 23:00:12,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 12 states have internal predecessors, (13), 8 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-04-02 23:00:12,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2023-04-02 23:00:12,479 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 24 [2023-04-02 23:00:12,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 23:00:12,481 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2023-04-02 23:00:12,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-04-02 23:00:12,481 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2023-04-02 23:00:12,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-04-02 23:00:12,483 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 23:00:12,483 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 23:00:12,492 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-04-02 23:00:12,689 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 [2023-04-02 23:00:12,689 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 23:00:12,690 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 23:00:12,690 INFO L85 PathProgramCache]: Analyzing trace with hash 811511868, now seen corresponding path program 1 times [2023-04-02 23:00:12,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 23:00:12,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801401144] [2023-04-02 23:00:12,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:00:12,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 23:00:12,725 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 23:00:12,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [698723209] [2023-04-02 23:00:12,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:00:12,726 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 23:00:12,726 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 23:00:12,731 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 23:00:12,733 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-04-02 23:00:12,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:00:12,799 INFO L262 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 32 conjunts are in the unsatisfiable core [2023-04-02 23:00:12,803 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 23:00:13,247 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-04-02 23:00:13,248 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-02 23:00:13,250 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 23:00:13,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801401144] [2023-04-02 23:00:13,253 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 23:00:13,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [698723209] [2023-04-02 23:00:13,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [698723209] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 23:00:13,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 23:00:13,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-04-02 23:00:13,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207370997] [2023-04-02 23:00:13,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 23:00:13,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-02 23:00:13,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 23:00:13,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-02 23:00:13,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-04-02 23:00:13,264 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 10 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 6 states have internal predecessors, (9), 5 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2023-04-02 23:00:13,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 23:00:13,459 INFO L93 Difference]: Finished difference Result 31 states and 37 transitions. [2023-04-02 23:00:13,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-04-02 23:00:13,460 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 6 states have internal predecessors, (9), 5 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) Word has length 24 [2023-04-02 23:00:13,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 23:00:13,460 INFO L225 Difference]: With dead ends: 31 [2023-04-02 23:00:13,461 INFO L226 Difference]: Without dead ends: 0 [2023-04-02 23:00:13,461 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2023-04-02 23:00:13,462 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 12 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 23:00:13,463 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 51 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 23:00:13,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-04-02 23:00:13,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-04-02 23:00:13,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-04-02 23:00:13,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-04-02 23:00:13,464 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 24 [2023-04-02 23:00:13,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 23:00:13,464 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-04-02 23:00:13,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 6 states have internal predecessors, (9), 5 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2023-04-02 23:00:13,464 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-04-02 23:00:13,464 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-04-02 23:00:13,467 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-04-02 23:00:13,481 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-04-02 23:00:13,681 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 [2023-04-02 23:00:13,683 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-04-02 23:00:13,766 INFO L899 garLoopResultBuilder]: For program point reach_errorEXIT(line 5) no Hoare annotation was computed. [2023-04-02 23:00:13,766 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line 5) no Hoare annotation was computed. [2023-04-02 23:00:13,767 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 8 10) the Hoare annotation is: true [2023-04-02 23:00:13,767 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 8 10) no Hoare annotation was computed. [2023-04-02 23:00:13,767 INFO L895 garLoopResultBuilder]: At program point L35-2(lines 35 46) the Hoare annotation is: (let ((.cse1 (div (+ (* (- 1) main_~u~0) 1) 2))) (let ((.cse0 (* .cse1 .cse1))) (and (= .cse0 (+ main_~A~0 main_~r~0)) (= (mod (+ main_~u~0 1) 2) 0) (= (mod main_~A~0 2) 1) (<= main_~A~0 2) (= main_~v~0 1) (< (+ (* main_~R~0 main_~R~0) 1) (+ main_~A~0 (* main_~R~0 2))) (< (+ (* 2 .cse1) .cse0 1) main_~A~0)))) [2023-04-02 23:00:13,767 INFO L899 garLoopResultBuilder]: For program point L29(line 29) no Hoare annotation was computed. [2023-04-02 23:00:13,767 INFO L895 garLoopResultBuilder]: At program point L27(line 27) the Hoare annotation is: (and (<= main_~A~0 2) (< (+ (* main_~R~0 main_~R~0) 1) (+ main_~A~0 (* main_~R~0 2)))) [2023-04-02 23:00:13,767 INFO L895 garLoopResultBuilder]: At program point L25(line 25) the Hoare annotation is: (and (<= 0 main_~A~0) (<= main_~A~0 2)) [2023-04-02 23:00:13,768 INFO L899 garLoopResultBuilder]: For program point mainEXIT(lines 19 51) no Hoare annotation was computed. [2023-04-02 23:00:13,768 INFO L895 garLoopResultBuilder]: At program point L25-1(line 25) the Hoare annotation is: (and (<= 0 main_~A~0) (<= main_~R~0 2) (<= main_~A~0 2) (<= 0 main_~R~0)) [2023-04-02 23:00:13,768 INFO L902 garLoopResultBuilder]: At program point L23(line 23) the Hoare annotation is: true [2023-04-02 23:00:13,768 INFO L899 garLoopResultBuilder]: For program point L23-1(line 23) no Hoare annotation was computed. [2023-04-02 23:00:13,768 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 19 51) the Hoare annotation is: true [2023-04-02 23:00:13,768 INFO L895 garLoopResultBuilder]: At program point L36(line 36) the Hoare annotation is: (let ((.cse1 (div (+ (* (- 1) main_~u~0) 1) 2))) (let ((.cse0 (* .cse1 .cse1))) (and (= .cse0 (+ main_~A~0 main_~r~0)) (= (mod (+ main_~u~0 1) 2) 0) (= (mod main_~A~0 2) 1) (<= main_~A~0 2) (= main_~v~0 1) (< (+ (* main_~R~0 main_~R~0) 1) (+ main_~A~0 (* main_~R~0 2))) (< (+ (* 2 .cse1) .cse0 1) main_~A~0)))) [2023-04-02 23:00:13,769 INFO L899 garLoopResultBuilder]: For program point L36-1(lines 35 46) no Hoare annotation was computed. [2023-04-02 23:00:13,769 INFO L899 garLoopResultBuilder]: For program point L49(line 49) no Hoare annotation was computed. [2023-04-02 23:00:13,769 INFO L895 garLoopResultBuilder]: At program point L39-2(lines 35 46) the Hoare annotation is: (let ((.cse1 (div (+ (* (- 1) main_~u~0) 1) 2))) (let ((.cse0 (* .cse1 .cse1))) (and (= .cse0 (+ main_~A~0 main_~r~0)) (= (mod (+ main_~u~0 1) 2) 0) (= (mod main_~A~0 2) 1) (<= main_~A~0 2) (= main_~v~0 1) (< (+ (* main_~R~0 main_~R~0) 1) (+ main_~A~0 (* main_~R~0 2))) (< (+ (* 2 .cse1) .cse0 1) main_~A~0)))) [2023-04-02 23:00:13,769 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(line -1) the Hoare annotation is: true [2023-04-02 23:00:13,769 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2023-04-02 23:00:13,769 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-04-02 23:00:13,769 INFO L902 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: true [2023-04-02 23:00:13,769 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2023-04-02 23:00:13,770 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(line -1) the Hoare annotation is: true [2023-04-02 23:00:13,770 INFO L899 garLoopResultBuilder]: For program point L13(lines 13 14) no Hoare annotation was computed. [2023-04-02 23:00:13,770 INFO L899 garLoopResultBuilder]: For program point L12(lines 12 15) no Hoare annotation was computed. [2023-04-02 23:00:13,770 INFO L899 garLoopResultBuilder]: For program point L12-2(lines 11 17) no Hoare annotation was computed. [2023-04-02 23:00:13,770 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 11 17) no Hoare annotation was computed. [2023-04-02 23:00:13,770 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 11 17) the Hoare annotation is: true [2023-04-02 23:00:13,770 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2023-04-02 23:00:13,773 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-04-02 23:00:13,775 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-04-02 23:00:13,787 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.04 11:00:13 BoogieIcfgContainer [2023-04-02 23:00:13,787 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-04-02 23:00:13,788 INFO L158 Benchmark]: Toolchain (without parser) took 2506.72ms. Allocated memory is still 230.7MB. Free memory was 195.1MB in the beginning and 172.8MB in the end (delta: 22.3MB). Peak memory consumption was 23.3MB. Max. memory is 8.0GB. [2023-04-02 23:00:13,788 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 168.8MB. Free memory is still 117.5MB. There was no memory consumed. Max. memory is 8.0GB. [2023-04-02 23:00:13,789 INFO L158 Benchmark]: CACSL2BoogieTranslator took 181.76ms. Allocated memory is still 230.7MB. Free memory was 195.1MB in the beginning and 184.6MB in the end (delta: 10.5MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2023-04-02 23:00:13,789 INFO L158 Benchmark]: Boogie Preprocessor took 20.89ms. Allocated memory is still 230.7MB. Free memory was 184.6MB in the beginning and 183.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-04-02 23:00:13,789 INFO L158 Benchmark]: RCFGBuilder took 427.71ms. Allocated memory is still 230.7MB. Free memory was 183.0MB in the beginning and 169.9MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2023-04-02 23:00:13,790 INFO L158 Benchmark]: TraceAbstraction took 1872.14ms. Allocated memory is still 230.7MB. Free memory was 168.8MB in the beginning and 172.8MB in the end (delta: -3.9MB). There was no memory consumed. Max. memory is 8.0GB. [2023-04-02 23:00:13,791 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 168.8MB. Free memory is still 117.5MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 181.76ms. Allocated memory is still 230.7MB. Free memory was 195.1MB in the beginning and 184.6MB in the end (delta: 10.5MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * Boogie Preprocessor took 20.89ms. Allocated memory is still 230.7MB. Free memory was 184.6MB in the beginning and 183.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 427.71ms. Allocated memory is still 230.7MB. Free memory was 183.0MB in the beginning and 169.9MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * TraceAbstraction took 1872.14ms. Allocated memory is still 230.7MB. Free memory was 168.8MB in the beginning and 172.8MB in the end (delta: -3.9MB). There was no memory consumed. 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: 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, 29 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.8s, OverallIterations: 2, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 12 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 12 mSDsluCounter, 78 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 38 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 95 IncrementalHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 40 mSDtfsCounter, 95 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 48 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred in iteration=0, 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, 13 LocationsWithAnnotation, 21 PreInvPairs, 24 NumberOfFragments, 273 HoareAnnotationTreeSize, 21 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 13 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 48 NumberOfCodeBlocks, 48 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 46 ConstructedInterpolants, 0 QuantifiedInterpolants, 249 SizeOfPredicates, 6 NumberOfNonLiveVariables, 188 ConjunctsInSsa, 33 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 24/24 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: 35]: Loop Invariant Derived loop invariant: ((((((-1 * u + 1) / 2 * ((-1 * u + 1) / 2) == A + r && (u + 1) % 2 == 0) && A % 2 == 1) && A <= 2) && v == 1) && R * R + 1 < A + R * 2) && 2 * ((-1 * u + 1) / 2) + (-1 * u + 1) / 2 * ((-1 * u + 1) / 2) + 1 < A RESULT: Ultimate proved your program to be correct! [2023-04-02 23:00:13,821 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...