/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml --sifa.abstract.domain OctagonDomain -i ../sv-benchmarks/c/loop-new/gauss_sum.i.p+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-02 22:12:48,468 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-02 22:12:48,470 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-02 22:12:48,507 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-02 22:12:48,508 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-02 22:12:48,510 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-02 22:12:48,513 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-02 22:12:48,515 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-02 22:12:48,516 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-02 22:12:48,520 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-02 22:12:48,522 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-02 22:12:48,523 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-02 22:12:48,523 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-02 22:12:48,525 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-02 22:12:48,526 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-02 22:12:48,527 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-02 22:12:48,528 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-02 22:12:48,528 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-02 22:12:48,530 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-02 22:12:48,534 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-02 22:12:48,535 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-02 22:12:48,536 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-02 22:12:48,537 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-02 22:12:48,538 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-02 22:12:48,545 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-02 22:12:48,545 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-02 22:12:48,545 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-02 22:12:48,547 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-02 22:12:48,547 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-02 22:12:48,547 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-02 22:12:48,548 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-02 22:12:48,548 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-02 22:12:48,549 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-02 22:12:48,550 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-02 22:12:48,551 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-02 22:12:48,551 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-02 22:12:48,551 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-02 22:12:48,551 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-02 22:12:48,552 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-02 22:12:48,552 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-02 22:12:48,553 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-02 22:12:48,554 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf [2023-04-02 22:12:48,582 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-02 22:12:48,582 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-02 22:12:48,583 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-02 22:12:48,583 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-02 22:12:48,584 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-02 22:12:48,584 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-02 22:12:48,584 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-02 22:12:48,584 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-02 22:12:48,584 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-02 22:12:48,584 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-02 22:12:48,585 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-02 22:12:48,585 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-02 22:12:48,585 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-02 22:12:48,585 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-02 22:12:48,585 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-02 22:12:48,585 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-02 22:12:48,586 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-02 22:12:48,586 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-02 22:12:48,586 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-02 22:12:48,586 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-02 22:12:48,586 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-02 22:12:48,586 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-02 22:12:48,587 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-02 22:12:48,587 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-02 22:12:48,587 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-02 22:12:48,587 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-02 22:12:48,587 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-02 22:12:48,587 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-02 22:12:48,587 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-02 22:12:48,587 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-02 22:12:48,587 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-02 22:12:48,588 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-02 22:12:48,588 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 22:12:48,588 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-02 22:12:48,588 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-02 22:12:48,588 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-02 22:12:48,588 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-02 22:12:48,588 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-02 22:12:48,588 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-02 22:12:48,589 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-02 22:12:48,589 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-02 22:12:48,589 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> OctagonDomain [2023-04-02 22:12:48,800 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-02 22:12:48,820 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-02 22:12:48,823 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-02 22:12:48,824 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-02 22:12:48,824 INFO L275 PluginConnector]: CDTParser initialized [2023-04-02 22:12:48,825 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-new/gauss_sum.i.p+lhb-reducer.c [2023-04-02 22:12:49,937 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-02 22:12:50,105 INFO L351 CDTParser]: Found 1 translation units. [2023-04-02 22:12:50,106 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-new/gauss_sum.i.p+lhb-reducer.c [2023-04-02 22:12:50,111 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe2f92af7/f693241e672440c1975b916632dac27c/FLAG1ac0debff [2023-04-02 22:12:50,125 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe2f92af7/f693241e672440c1975b916632dac27c [2023-04-02 22:12:50,127 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-02 22:12:50,128 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-02 22:12:50,130 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-02 22:12:50,130 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-02 22:12:50,133 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-02 22:12:50,134 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 10:12:50" (1/1) ... [2023-04-02 22:12:50,134 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5463f01c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 10:12:50, skipping insertion in model container [2023-04-02 22:12:50,135 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 10:12:50" (1/1) ... [2023-04-02 22:12:50,140 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-02 22:12:50,153 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-02 22:12:50,261 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-new/gauss_sum.i.p+lhb-reducer.c[1444,1457] [2023-04-02 22:12:50,265 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 22:12:50,273 INFO L203 MainTranslator]: Completed pre-run [2023-04-02 22:12:50,287 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-new/gauss_sum.i.p+lhb-reducer.c[1444,1457] [2023-04-02 22:12:50,288 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 22:12:50,298 INFO L208 MainTranslator]: Completed translation [2023-04-02 22:12:50,299 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 10:12:50 WrapperNode [2023-04-02 22:12:50,299 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-02 22:12:50,300 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-02 22:12:50,300 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-02 22:12:50,300 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-02 22:12:50,309 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 10:12:50" (1/1) ... [2023-04-02 22:12:50,309 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 10:12:50" (1/1) ... [2023-04-02 22:12:50,315 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 10:12:50" (1/1) ... [2023-04-02 22:12:50,315 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 10:12:50" (1/1) ... [2023-04-02 22:12:50,322 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 10:12:50" (1/1) ... [2023-04-02 22:12:50,324 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 10:12:50" (1/1) ... [2023-04-02 22:12:50,325 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 10:12:50" (1/1) ... [2023-04-02 22:12:50,325 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 10:12:50" (1/1) ... [2023-04-02 22:12:50,327 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-02 22:12:50,327 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-02 22:12:50,327 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-02 22:12:50,328 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-02 22:12:50,328 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 10:12:50" (1/1) ... [2023-04-02 22:12:50,335 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 22:12:50,346 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 22:12:50,358 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-04-02 22:12:50,370 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-04-02 22:12:50,394 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-02 22:12:50,397 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-02 22:12:50,397 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-02 22:12:50,397 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-02 22:12:50,397 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-02 22:12:50,398 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-02 22:12:50,398 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-02 22:12:50,398 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-02 22:12:50,398 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-02 22:12:50,398 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-02 22:12:50,398 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-04-02 22:12:50,398 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-02 22:12:50,398 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-02 22:12:50,398 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-02 22:12:50,399 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-02 22:12:50,399 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-02 22:12:50,400 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-02 22:12:50,400 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-02 22:12:50,400 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-02 22:12:50,466 INFO L236 CfgBuilder]: Building ICFG [2023-04-02 22:12:50,468 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-02 22:12:50,648 INFO L277 CfgBuilder]: Performing block encoding [2023-04-02 22:12:50,667 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-02 22:12:50,667 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-04-02 22:12:50,669 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 10:12:50 BoogieIcfgContainer [2023-04-02 22:12:50,669 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-02 22:12:50,671 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-02 22:12:50,671 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-02 22:12:50,673 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-02 22:12:50,674 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.04 10:12:50" (1/3) ... [2023-04-02 22:12:50,674 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e1deb44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 10:12:50, skipping insertion in model container [2023-04-02 22:12:50,674 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 10:12:50" (2/3) ... [2023-04-02 22:12:50,675 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e1deb44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 10:12:50, skipping insertion in model container [2023-04-02 22:12:50,675 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 10:12:50" (3/3) ... [2023-04-02 22:12:50,675 INFO L112 eAbstractionObserver]: Analyzing ICFG gauss_sum.i.p+lhb-reducer.c [2023-04-02 22:12:50,689 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-02 22:12:50,690 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-02 22:12:50,725 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-02 22:12:50,730 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;@41bc416f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-02 22:12:50,731 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-02 22:12:50,734 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 15 states have internal predecessors, (24), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-02 22:12:50,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-04-02 22:12:50,749 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 22:12:50,749 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 22:12:50,750 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 22:12:50,759 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 22:12:50,759 INFO L85 PathProgramCache]: Analyzing trace with hash -1419880332, now seen corresponding path program 1 times [2023-04-02 22:12:50,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 22:12:50,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036127260] [2023-04-02 22:12:50,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 22:12:50,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 22:12:50,900 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 22:12:50,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [942105870] [2023-04-02 22:12:50,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 22:12:50,901 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 22:12:50,901 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 22:12:50,907 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 22:12:50,924 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-04-02 22:12:50,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 22:12:51,001 INFO L262 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 31 conjunts are in the unsatisfiable core [2023-04-02 22:12:51,010 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 22:12:51,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 22:12:51,260 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-02 22:12:51,260 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 22:12:51,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036127260] [2023-04-02 22:12:51,261 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 22:12:51,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [942105870] [2023-04-02 22:12:51,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [942105870] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 22:12:51,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 22:12:51,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-02 22:12:51,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076848926] [2023-04-02 22:12:51,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 22:12:51,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-02 22:12:51,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 22:12:51,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-02 22:12:51,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-02 22:12:51,317 INFO L87 Difference]: Start difference. First operand has 20 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 15 states have internal predecessors, (24), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 9 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 9 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 22:12:51,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 22:12:51,495 INFO L93 Difference]: Finished difference Result 40 states and 49 transitions. [2023-04-02 22:12:51,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-04-02 22:12:51,498 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 9 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2023-04-02 22:12:51,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 22:12:51,505 INFO L225 Difference]: With dead ends: 40 [2023-04-02 22:12:51,505 INFO L226 Difference]: Without dead ends: 17 [2023-04-02 22:12:51,509 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-04-02 22:12:51,513 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 15 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 22:12:51,515 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 178 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 22:12:51,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2023-04-02 22:12:51,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2023-04-02 22:12:51,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 13 states have (on average 1.0769230769230769) internal successors, (14), 13 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 22:12:51,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2023-04-02 22:12:51,544 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 15 [2023-04-02 22:12:51,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 22:12:51,544 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2023-04-02 22:12:51,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 9 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 22:12:51,545 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2023-04-02 22:12:51,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-04-02 22:12:51,546 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 22:12:51,546 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 22:12:51,554 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-04-02 22:12:51,751 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 22:12:51,752 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 22:12:51,753 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 22:12:51,753 INFO L85 PathProgramCache]: Analyzing trace with hash -1066679785, now seen corresponding path program 1 times [2023-04-02 22:12:51,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 22:12:51,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748737950] [2023-04-02 22:12:51,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 22:12:51,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 22:12:51,790 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 22:12:51,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1951504390] [2023-04-02 22:12:51,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 22:12:51,790 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 22:12:51,791 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 22:12:51,801 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 22:12:51,806 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-04-02 22:12:51,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 22:12:51,864 INFO L262 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 35 conjunts are in the unsatisfiable core [2023-04-02 22:12:51,866 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 22:12:52,056 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 22:12:52,056 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 22:12:53,032 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 22:12:53,033 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 22:12:53,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748737950] [2023-04-02 22:12:53,036 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 22:12:53,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1951504390] [2023-04-02 22:12:53,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1951504390] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 22:12:53,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [595769695] [2023-04-02 22:12:53,063 INFO L159 IcfgInterpreter]: Started Sifa with 16 locations of interest [2023-04-02 22:12:53,064 INFO L166 IcfgInterpreter]: Building call graph [2023-04-02 22:12:53,071 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-02 22:12:53,076 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-02 22:12:53,076 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-02 22:12:53,168 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 15 for LOIs [2023-04-02 22:12:53,306 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 13 for LOIs [2023-04-02 22:12:53,315 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-02 22:12:54,016 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '251#(and (<= main_~main__i~0 (+ main_~main__n~0 1)) (< main_~main__n~0 main_~main__i~0) (<= 1 |#StackHeapBarrier|) (not (= (* main_~main__sum~0 2) (+ (* main_~main__n~0 main_~main__n~0) main_~main__n~0))) (= main_~__VERIFIER_assert__cond~0 0) (= ~__return_96~0 0) (= main_~__tmp_1~0 0) (<= 11 (+ main_~main__n~0 main_~main__i~0)) (<= (+ 9 main_~main__i~0) main_~main__sum~0) (= |#NULL.offset| 0) (<= main_~main__n~0 1000) (= |old(~__return_96~0)| 0) (= ~__return_main~0 0) (= |#NULL.base| 0))' at error location [2023-04-02 22:12:54,017 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-02 22:12:54,017 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-04-02 22:12:54,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5] total 13 [2023-04-02 22:12:54,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960169832] [2023-04-02 22:12:54,017 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-04-02 22:12:54,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-04-02 22:12:54,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 22:12:54,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-04-02 22:12:54,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=585, Unknown=1, NotChecked=0, Total=702 [2023-04-02 22:12:54,019 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand has 13 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 13 states have internal predecessors, (22), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 22:12:54,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 22:12:54,515 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2023-04-02 22:12:54,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-04-02 22:12:54,515 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 13 states have internal predecessors, (22), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2023-04-02 22:12:54,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 22:12:54,516 INFO L225 Difference]: With dead ends: 19 [2023-04-02 22:12:54,516 INFO L226 Difference]: Without dead ends: 0 [2023-04-02 22:12:54,517 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 17 SyntacticMatches, 5 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=182, Invalid=1077, Unknown=1, NotChecked=0, Total=1260 [2023-04-02 22:12:54,517 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 4 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 22:12:54,518 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 22 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 22:12:54,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-04-02 22:12:54,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-04-02 22:12:54,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-04-02 22:12:54,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-04-02 22:12:54,519 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2023-04-02 22:12:54,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 22:12:54,519 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-04-02 22:12:54,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 13 states have internal predecessors, (22), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 22:12:54,519 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-04-02 22:12:54,520 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-04-02 22:12:54,522 INFO L805 garLoopResultBuilder]: Registering result SAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-04-02 22:12:54,530 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 22:12:54,728 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 22:12:54,730 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-04-02 22:12:54,803 INFO L899 garLoopResultBuilder]: For program point reach_errorEXIT(line 4) no Hoare annotation was computed. [2023-04-02 22:12:54,803 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line 4) no Hoare annotation was computed. [2023-04-02 22:12:54,803 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(lines 6 8) no Hoare annotation was computed. [2023-04-02 22:12:54,803 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 6 8) no Hoare annotation was computed. [2023-04-02 22:12:54,803 INFO L899 garLoopResultBuilder]: For program point L33(lines 33 103) no Hoare annotation was computed. [2023-04-02 22:12:54,804 INFO L899 garLoopResultBuilder]: For program point L25(lines 25 104) no Hoare annotation was computed. [2023-04-02 22:12:54,804 INFO L899 garLoopResultBuilder]: For program point mainEXIT(lines 13 106) no Hoare annotation was computed. [2023-04-02 22:12:54,804 INFO L899 garLoopResultBuilder]: For program point L19(lines 19 105) no Hoare annotation was computed. [2023-04-02 22:12:54,804 INFO L895 garLoopResultBuilder]: At program point $Ultimate##16(lines 54 78) the Hoare annotation is: (let ((.cse0 (* main_~main__sum~0 2))) (and (forall ((main_~main__n~0 Int)) (or (< main_~main__n~0 main_~main__i~0) (< main_~main__i~0 main_~main__n~0) (= (+ (* main_~main__n~0 main_~main__n~0) main_~main__n~0) (+ .cse0 (* 2 main_~main__i~0))))) (or (= .cse0 (+ (* main_~main__n~0 main_~main__n~0) main_~main__n~0)) (<= main_~main__i~0 main_~main__n~0)))) [2023-04-02 22:12:54,804 INFO L899 garLoopResultBuilder]: For program point mainFINAL(lines 13 106) no Hoare annotation was computed. [2023-04-02 22:12:54,805 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 13 106) the Hoare annotation is: true [2023-04-02 22:12:54,805 INFO L899 garLoopResultBuilder]: For program point L69(line 69) no Hoare annotation was computed. [2023-04-02 22:12:54,805 INFO L899 garLoopResultBuilder]: For program point L67(lines 67 76) no Hoare annotation was computed. [2023-04-02 22:12:54,805 INFO L899 garLoopResultBuilder]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 69) no Hoare annotation was computed. [2023-04-02 22:12:54,805 INFO L899 garLoopResultBuilder]: For program point L49(lines 49 83) no Hoare annotation was computed. [2023-04-02 22:12:54,805 INFO L899 garLoopResultBuilder]: For program point L45(lines 45 88) no Hoare annotation was computed. [2023-04-02 22:12:54,805 INFO L899 garLoopResultBuilder]: For program point L41(lines 41 93) no Hoare annotation was computed. [2023-04-02 22:12:54,805 INFO L899 garLoopResultBuilder]: For program point L37(lines 37 98) no Hoare annotation was computed. [2023-04-02 22:12:54,805 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(line -1) the Hoare annotation is: true [2023-04-02 22:12:54,806 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2023-04-02 22:12:54,806 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-04-02 22:12:54,806 INFO L902 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: true [2023-04-02 22:12:54,806 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2023-04-02 22:12:54,806 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(line -1) the Hoare annotation is: true [2023-04-02 22:12:54,808 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-04-02 22:12:54,810 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-04-02 22:12:54,817 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2023-04-02 22:12:54,818 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2023-04-02 22:12:54,818 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2023-04-02 22:12:54,818 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2023-04-02 22:12:54,818 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2023-04-02 22:12:54,823 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2023-04-02 22:12:54,824 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2023-04-02 22:12:54,824 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2023-04-02 22:12:54,824 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2023-04-02 22:12:54,824 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2023-04-02 22:12:54,826 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.04 10:12:54 BoogieIcfgContainer [2023-04-02 22:12:54,826 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-04-02 22:12:54,827 INFO L158 Benchmark]: Toolchain (without parser) took 4698.82ms. Allocated memory is still 270.5MB. Free memory was 225.8MB in the beginning and 219.5MB in the end (delta: 6.3MB). Peak memory consumption was 7.3MB. Max. memory is 8.0GB. [2023-04-02 22:12:54,827 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 180.4MB. Free memory is still 126.2MB. There was no memory consumed. Max. memory is 8.0GB. [2023-04-02 22:12:54,828 INFO L158 Benchmark]: CACSL2BoogieTranslator took 169.02ms. Allocated memory is still 270.5MB. Free memory was 225.8MB in the beginning and 214.8MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-04-02 22:12:54,829 INFO L158 Benchmark]: Boogie Preprocessor took 27.01ms. Allocated memory is still 270.5MB. Free memory was 214.8MB in the beginning and 213.7MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-04-02 22:12:54,830 INFO L158 Benchmark]: RCFGBuilder took 341.96ms. Allocated memory is still 270.5MB. Free memory was 213.2MB in the beginning and 200.6MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2023-04-02 22:12:54,833 INFO L158 Benchmark]: TraceAbstraction took 4155.45ms. Allocated memory is still 270.5MB. Free memory was 199.6MB in the beginning and 219.5MB in the end (delta: -19.9MB). There was no memory consumed. Max. memory is 8.0GB. [2023-04-02 22:12:54,834 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 180.4MB. Free memory is still 126.2MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 169.02ms. Allocated memory is still 270.5MB. Free memory was 225.8MB in the beginning and 214.8MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 27.01ms. Allocated memory is still 270.5MB. Free memory was 214.8MB in the beginning and 213.7MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 341.96ms. Allocated memory is still 270.5MB. Free memory was 213.2MB in the beginning and 200.6MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * TraceAbstraction took 4155.45ms. Allocated memory is still 270.5MB. Free memory was 199.6MB in the beginning and 219.5MB in the end (delta: -19.9MB). There was no memory consumed. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 69]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 24 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 4.1s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 19 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 19 mSDsluCounter, 200 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 169 mSDsCounter, 9 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 198 IncrementalHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 9 mSolverCounterUnsat, 31 mSDtfsCounter, 198 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 71 GetRequests, 24 SyntacticMatches, 5 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 2.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=0, InterpolantAutomatonStates: 21, 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, 5 LocationsWithAnnotation, 5 PreInvPairs, 7 NumberOfFragments, 39 HoareAnnotationTreeSize, 5 FomulaSimplifications, 5 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 50 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 31 NumberOfCodeBlocks, 31 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 44 ConstructedInterpolants, 6 QuantifiedInterpolants, 267 SizeOfPredicates, 9 NumberOfNonLiveVariables, 195 ConjunctsInSsa, 66 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 0/2 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: 54]: Loop Invariant [2023-04-02 22:12:54,846 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2023-04-02 22:12:54,847 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2023-04-02 22:12:54,847 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2023-04-02 22:12:54,847 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2023-04-02 22:12:54,847 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2023-04-02 22:12:54,847 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2023-04-02 22:12:54,847 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2023-04-02 22:12:54,847 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2023-04-02 22:12:54,847 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2023-04-02 22:12:54,848 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] Derived loop invariant: (forall main_~main__n~0 : int :: (main_~main__n~0 < main__i || main__i < main_~main__n~0) || main_~main__n~0 * main_~main__n~0 + main_~main__n~0 == main__sum * 2 + 2 * main__i) && (main__sum * 2 == main__n * main__n + main__n || main__i <= main__n) RESULT: Ultimate proved your program to be correct! [2023-04-02 22:12:54,862 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...