/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 EqDomain -i ../sv-benchmarks/c/loop-new/gauss_sum.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 11:07:07,671 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 11:07:07,673 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 11:07:07,712 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-01 11:07:07,713 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-01 11:07:07,715 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-01 11:07:07,718 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-01 11:07:07,720 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-01 11:07:07,721 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-01 11:07:07,726 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-01 11:07:07,727 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-01 11:07:07,729 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-01 11:07:07,729 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-01 11:07:07,731 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-01 11:07:07,732 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-01 11:07:07,733 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-01 11:07:07,733 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-01 11:07:07,734 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-01 11:07:07,736 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-01 11:07:07,741 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-01 11:07:07,741 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-01 11:07:07,742 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-01 11:07:07,743 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-01 11:07:07,744 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-01 11:07:07,752 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-01 11:07:07,752 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-01 11:07:07,752 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-01 11:07:07,754 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-01 11:07:07,754 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-01 11:07:07,755 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-01 11:07:07,755 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-01 11:07:07,755 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-01 11:07:07,757 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-01 11:07:07,757 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-01 11:07:07,758 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-01 11:07:07,758 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-01 11:07:07,758 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-01 11:07:07,758 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-01 11:07:07,759 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-01 11:07:07,759 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-01 11:07:07,760 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-01 11:07:07,761 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf [2023-04-01 11:07:07,790 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 11:07:07,790 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 11:07:07,790 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 11:07:07,791 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 11:07:07,791 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 11:07:07,791 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 11:07:07,791 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-01 11:07:07,792 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-01 11:07:07,792 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-01 11:07:07,792 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-01 11:07:07,793 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-01 11:07:07,793 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-01 11:07:07,793 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-01 11:07:07,793 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-01 11:07:07,793 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-01 11:07:07,793 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-01 11:07:07,793 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-01 11:07:07,793 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-01 11:07:07,794 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 11:07:07,794 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 11:07:07,794 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 11:07:07,794 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 11:07:07,794 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 11:07:07,794 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 11:07:07,794 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 11:07:07,795 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 11:07:07,795 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 11:07:07,795 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 11:07:07,795 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 11:07:07,795 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 11:07:07,795 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 11:07:07,796 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 11:07:07,796 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 11:07:07,796 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 11:07:07,796 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-01 11:07:07,796 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 11:07:07,796 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 11:07:07,796 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-01 11:07:07,797 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 11:07:07,797 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 11:07:07,797 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-01 11:07:07,797 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> EqDomain [2023-04-01 11:07:08,033 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 11:07:08,057 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 11:07:08,059 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 11:07:08,060 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 11:07:08,061 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 11:07:08,062 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-new/gauss_sum.i [2023-04-01 11:07:09,200 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 11:07:09,354 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 11:07:09,355 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-new/gauss_sum.i [2023-04-01 11:07:09,359 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b97e212bb/e6446d079ab64d759fef645d7fefdbf3/FLAG61f1187c1 [2023-04-01 11:07:09,371 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b97e212bb/e6446d079ab64d759fef645d7fefdbf3 [2023-04-01 11:07:09,374 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 11:07:09,375 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 11:07:09,378 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 11:07:09,378 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 11:07:09,381 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 11:07:09,381 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 11:07:09" (1/1) ... [2023-04-01 11:07:09,383 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d1d889d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:07:09, skipping insertion in model container [2023-04-01 11:07:09,383 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 11:07:09" (1/1) ... [2023-04-01 11:07:09,388 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 11:07:09,403 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 11:07:09,552 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[891,904] [2023-04-01 11:07:09,565 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 11:07:09,575 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 11:07:09,587 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[891,904] [2023-04-01 11:07:09,592 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 11:07:09,605 INFO L208 MainTranslator]: Completed translation [2023-04-01 11:07:09,606 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:07:09 WrapperNode [2023-04-01 11:07:09,606 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 11:07:09,607 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 11:07:09,607 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 11:07:09,607 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 11:07:09,616 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:07:09" (1/1) ... [2023-04-01 11:07:09,617 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:07:09" (1/1) ... [2023-04-01 11:07:09,622 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:07:09" (1/1) ... [2023-04-01 11:07:09,623 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:07:09" (1/1) ... [2023-04-01 11:07:09,630 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:07:09" (1/1) ... [2023-04-01 11:07:09,634 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:07:09" (1/1) ... [2023-04-01 11:07:09,635 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:07:09" (1/1) ... [2023-04-01 11:07:09,636 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:07:09" (1/1) ... [2023-04-01 11:07:09,641 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 11:07:09,642 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 11:07:09,643 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 11:07:09,643 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 11:07:09,644 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:07:09" (1/1) ... [2023-04-01 11:07:09,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 11:07:09,660 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 11:07:09,678 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-04-01 11:07:09,685 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-04-01 11:07:09,716 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 11:07:09,716 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 11:07:09,716 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 11:07:09,716 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-01 11:07:09,716 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-04-01 11:07:09,717 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 11:07:09,717 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 11:07:09,717 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 11:07:09,717 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2023-04-01 11:07:09,717 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2023-04-01 11:07:09,717 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 11:07:09,717 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 11:07:09,717 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-01 11:07:09,717 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-04-01 11:07:09,718 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-01 11:07:09,718 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 11:07:09,718 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 11:07:09,718 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 11:07:09,718 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 11:07:09,718 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 11:07:09,718 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 11:07:09,718 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 11:07:09,790 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 11:07:09,793 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 11:07:09,967 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 11:07:09,991 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 11:07:09,992 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-04-01 11:07:09,994 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 11:07:09 BoogieIcfgContainer [2023-04-01 11:07:09,994 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 11:07:09,996 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 11:07:09,996 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 11:07:09,998 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 11:07:09,998 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 11:07:09" (1/3) ... [2023-04-01 11:07:09,999 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39e004cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 11:07:09, skipping insertion in model container [2023-04-01 11:07:09,999 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:07:09" (2/3) ... [2023-04-01 11:07:09,999 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39e004cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 11:07:09, skipping insertion in model container [2023-04-01 11:07:10,000 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 11:07:09" (3/3) ... [2023-04-01 11:07:10,001 INFO L112 eAbstractionObserver]: Analyzing ICFG gauss_sum.i [2023-04-01 11:07:10,015 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 11:07:10,015 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 11:07:10,052 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 11:07:10,058 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;@1f3c20cf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-01 11:07:10,058 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 11:07:10,062 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 12 states have internal predecessors, (15), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-01 11:07:10,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-04-01 11:07:10,077 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 11:07:10,078 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 11:07:10,078 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 11:07:10,083 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 11:07:10,083 INFO L85 PathProgramCache]: Analyzing trace with hash -1907642805, now seen corresponding path program 1 times [2023-04-01 11:07:10,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 11:07:10,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501274893] [2023-04-01 11:07:10,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 11:07:10,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 11:07:10,231 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-01 11:07:10,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1460862946] [2023-04-01 11:07:10,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 11:07:10,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 11:07:10,233 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 11:07:10,239 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 11:07:10,241 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-04-01 11:07:10,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 11:07:10,312 INFO L262 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 3 conjunts are in the unsatisfiable core [2023-04-01 11:07:10,316 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 11:07:10,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 11:07:10,415 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 11:07:10,415 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 11:07:10,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501274893] [2023-04-01 11:07:10,416 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-01 11:07:10,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1460862946] [2023-04-01 11:07:10,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1460862946] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 11:07:10,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 11:07:10,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 11:07:10,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353535450] [2023-04-01 11:07:10,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 11:07:10,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 11:07:10,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 11:07:10,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 11:07:10,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 11:07:10,453 INFO L87 Difference]: Start difference. First operand has 19 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 12 states have internal predecessors, (15), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 11:07:10,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 11:07:10,479 INFO L93 Difference]: Finished difference Result 32 states and 36 transitions. [2023-04-01 11:07:10,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 11:07:10,482 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2023-04-01 11:07:10,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 11:07:10,488 INFO L225 Difference]: With dead ends: 32 [2023-04-01 11:07:10,488 INFO L226 Difference]: Without dead ends: 13 [2023-04-01 11:07:10,492 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 11:07:10,496 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-01 11:07:10,498 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 30 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-01 11:07:10,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2023-04-01 11:07:10,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2023-04-01 11:07:10,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 11:07:10,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2023-04-01 11:07:10,529 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2023-04-01 11:07:10,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 11:07:10,529 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2023-04-01 11:07:10,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 11:07:10,529 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2023-04-01 11:07:10,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-04-01 11:07:10,531 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 11:07:10,531 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 11:07:10,545 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-04-01 11:07:10,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-04-01 11:07:10,744 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 11:07:10,745 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 11:07:10,745 INFO L85 PathProgramCache]: Analyzing trace with hash 859952967, now seen corresponding path program 1 times [2023-04-01 11:07:10,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 11:07:10,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049292553] [2023-04-01 11:07:10,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 11:07:10,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 11:07:10,761 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-01 11:07:10,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [683057155] [2023-04-01 11:07:10,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 11:07:10,761 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 11:07:10,762 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 11:07:10,767 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 11:07:10,771 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-04-01 11:07:10,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 11:07:10,809 INFO L262 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 15 conjunts are in the unsatisfiable core [2023-04-01 11:07:10,811 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 11:07:10,952 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 11:07:10,952 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 11:07:11,054 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 11:07:11,054 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 11:07:11,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049292553] [2023-04-01 11:07:11,055 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-01 11:07:11,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [683057155] [2023-04-01 11:07:11,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [683057155] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 11:07:11,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1978381764] [2023-04-01 11:07:11,099 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2023-04-01 11:07:11,100 INFO L166 IcfgInterpreter]: Building call graph [2023-04-01 11:07:11,103 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-01 11:07:11,108 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-01 11:07:11,108 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-01 11:07:11,234 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 37 for LOIs [2023-04-01 11:07:11,386 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 52 for LOIs [2023-04-01 11:07:11,430 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2023-04-01 11:07:11,440 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-01 11:07:12,001 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '199#(and (= 2 (select |#length| 1)) (= 9 (select |#length| 2)) (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0) (not (= |#StackHeapBarrier| 0)) (= (select |#valid| 1) 1) (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= (select (select |#memory_int| 1) 0) 48) (= (select (select |#memory_int| 1) 1) 0) (= |#NULL.base| 0))' at error location [2023-04-01 11:07:12,002 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-01 11:07:12,002 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-04-01 11:07:12,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-04-01 11:07:12,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85997549] [2023-04-01 11:07:12,002 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-04-01 11:07:12,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-01 11:07:12,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 11:07:12,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-01 11:07:12,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=326, Unknown=0, NotChecked=0, Total=380 [2023-04-01 11:07:12,005 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand has 12 states, 10 states have (on average 1.3) internal successors, (13), 10 states have internal predecessors, (13), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 11:07:12,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 11:07:12,096 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2023-04-01 11:07:12,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-01 11:07:12,096 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 1.3) internal successors, (13), 10 states have internal predecessors, (13), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2023-04-01 11:07:12,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 11:07:12,097 INFO L225 Difference]: With dead ends: 19 [2023-04-01 11:07:12,097 INFO L226 Difference]: Without dead ends: 14 [2023-04-01 11:07:12,099 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=66, Invalid=396, Unknown=0, NotChecked=0, Total=462 [2023-04-01 11:07:12,100 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 3 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-01 11:07:12,104 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 52 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-01 11:07:12,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2023-04-01 11:07:12,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2023-04-01 11:07:12,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 states have internal predecessors, (10), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 11:07:12,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2023-04-01 11:07:12,110 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 12 [2023-04-01 11:07:12,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 11:07:12,110 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2023-04-01 11:07:12,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 1.3) internal successors, (13), 10 states have internal predecessors, (13), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 11:07:12,111 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2023-04-01 11:07:12,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-04-01 11:07:12,111 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 11:07:12,112 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 11:07:12,124 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-04-01 11:07:12,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-04-01 11:07:12,317 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 11:07:12,318 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 11:07:12,318 INFO L85 PathProgramCache]: Analyzing trace with hash 756075979, now seen corresponding path program 2 times [2023-04-01 11:07:12,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 11:07:12,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458109690] [2023-04-01 11:07:12,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 11:07:12,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 11:07:12,328 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-01 11:07:12,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [885408701] [2023-04-01 11:07:12,329 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-04-01 11:07:12,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 11:07:12,329 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 11:07:12,330 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 11:07:12,333 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-04-01 11:07:12,378 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-04-01 11:07:12,378 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-01 11:07:12,379 INFO L262 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 19 conjunts are in the unsatisfiable core [2023-04-01 11:07:12,381 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 11:07:12,468 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 11:07:12,468 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 11:07:12,657 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-04-01 11:07:12,658 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 11:07:12,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458109690] [2023-04-01 11:07:12,658 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-01 11:07:12,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [885408701] [2023-04-01 11:07:12,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [885408701] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 11:07:12,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1315229109] [2023-04-01 11:07:12,660 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2023-04-01 11:07:12,660 INFO L166 IcfgInterpreter]: Building call graph [2023-04-01 11:07:12,661 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-01 11:07:12,661 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-01 11:07:12,661 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-01 11:07:12,708 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 37 for LOIs [2023-04-01 11:07:12,793 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 52 for LOIs [2023-04-01 11:07:12,816 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2023-04-01 11:07:12,820 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-01 11:07:13,279 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '352#(and (= 2 (select |#length| 1)) (= 9 (select |#length| 2)) (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0) (not (= |#StackHeapBarrier| 0)) (= (select |#valid| 1) 1) (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= (select (select |#memory_int| 1) 0) 48) (= (select (select |#memory_int| 1) 1) 0) (= |#NULL.base| 0))' at error location [2023-04-01 11:07:13,279 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-01 11:07:13,279 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-04-01 11:07:13,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 13 [2023-04-01 11:07:13,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311082060] [2023-04-01 11:07:13,280 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-04-01 11:07:13,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-04-01 11:07:13,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 11:07:13,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-04-01 11:07:13,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=364, Unknown=0, NotChecked=0, Total=420 [2023-04-01 11:07:13,281 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand has 13 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 11 states have internal predecessors, (15), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 11:07:13,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 11:07:13,597 INFO L93 Difference]: Finished difference Result 16 states and 17 transitions. [2023-04-01 11:07:13,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-04-01 11:07:13,598 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 11 states have internal predecessors, (15), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2023-04-01 11:07:13,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 11:07:13,598 INFO L225 Difference]: With dead ends: 16 [2023-04-01 11:07:13,598 INFO L226 Difference]: Without dead ends: 0 [2023-04-01 11:07:13,599 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=100, Invalid=656, Unknown=0, NotChecked=0, Total=756 [2023-04-01 11:07:13,599 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 4 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 11:07:13,600 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 33 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 11:07:13,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-04-01 11:07:13,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-04-01 11:07:13,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-04-01 11:07:13,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-04-01 11:07:13,601 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2023-04-01 11:07:13,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 11:07:13,601 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-04-01 11:07:13,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 11 states have internal predecessors, (15), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 11:07:13,601 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-04-01 11:07:13,602 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-04-01 11:07:13,604 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-04-01 11:07:13,616 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-04-01 11:07:13,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 11:07:13,814 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-04-01 11:07:13,947 INFO L899 garLoopResultBuilder]: For program point reach_errorEXIT(line 12) no Hoare annotation was computed. [2023-04-01 11:07:13,947 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line 12) no Hoare annotation was computed. [2023-04-01 11:07:13,947 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(lines 14 16) no Hoare annotation was computed. [2023-04-01 11:07:13,947 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 14 16) no Hoare annotation was computed. [2023-04-01 11:07:13,947 INFO L899 garLoopResultBuilder]: For program point L32(line 32) no Hoare annotation was computed. [2023-04-01 11:07:13,947 INFO L899 garLoopResultBuilder]: For program point L27(line 27) no Hoare annotation was computed. [2023-04-01 11:07:13,948 INFO L895 garLoopResultBuilder]: At program point L29-3(lines 29 31) the Hoare annotation is: (let ((.cse0 (* main_~sum~0 2))) (and (forall ((main_~n~0 Int)) (or (= (+ (* main_~i~0 2) .cse0) (+ main_~n~0 (* main_~n~0 main_~n~0))) (< main_~i~0 main_~n~0) (< main_~n~0 main_~i~0))) (or (<= main_~i~0 main_~n~0) (= (+ main_~n~0 (* main_~n~0 main_~n~0)) .cse0)))) [2023-04-01 11:07:13,948 INFO L895 garLoopResultBuilder]: At program point L29-4(lines 29 31) the Hoare annotation is: (or (and (<= 1 main_~n~0) (= main_~sum~0 1) (<= main_~i~0 2) (<= main_~n~0 1)) (let ((.cse0 (* main_~sum~0 2))) (and (forall ((main_~n~0 Int)) (or (= (+ (* main_~i~0 2) .cse0) (+ main_~n~0 (* main_~n~0 main_~n~0))) (< main_~i~0 main_~n~0) (< main_~n~0 main_~i~0))) (= (+ main_~n~0 (* main_~n~0 main_~n~0)) .cse0)))) [2023-04-01 11:07:13,948 INFO L899 garLoopResultBuilder]: For program point mainEXIT(lines 24 34) no Hoare annotation was computed. [2023-04-01 11:07:13,948 INFO L899 garLoopResultBuilder]: For program point mainFINAL(lines 24 34) no Hoare annotation was computed. [2023-04-01 11:07:13,949 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 24 34) the Hoare annotation is: true [2023-04-01 11:07:13,949 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(line -1) the Hoare annotation is: true [2023-04-01 11:07:13,949 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2023-04-01 11:07:13,949 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-04-01 11:07:13,949 INFO L902 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: true [2023-04-01 11:07:13,949 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2023-04-01 11:07:13,949 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(line -1) the Hoare annotation is: true [2023-04-01 11:07:13,950 INFO L899 garLoopResultBuilder]: For program point L18-2(lines 17 22) no Hoare annotation was computed. [2023-04-01 11:07:13,950 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 17 22) no Hoare annotation was computed. [2023-04-01 11:07:13,950 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 17 22) the Hoare annotation is: true [2023-04-01 11:07:13,950 INFO L899 garLoopResultBuilder]: For program point L19(line 19) no Hoare annotation was computed. [2023-04-01 11:07:13,950 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2023-04-01 11:07:13,950 INFO L899 garLoopResultBuilder]: For program point L18(lines 18 20) no Hoare annotation was computed. [2023-04-01 11:07:13,953 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1] [2023-04-01 11:07:13,955 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-04-01 11:07:13,961 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~n~0,QUANTIFIED] [2023-04-01 11:07:13,962 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~n~0,QUANTIFIED] [2023-04-01 11:07:13,962 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~n~0,QUANTIFIED] [2023-04-01 11:07:13,962 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~n~0,QUANTIFIED] [2023-04-01 11:07:13,962 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~n~0,QUANTIFIED] [2023-04-01 11:07:13,967 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~n~0,QUANTIFIED] [2023-04-01 11:07:13,968 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~n~0,QUANTIFIED] [2023-04-01 11:07:13,968 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~n~0,QUANTIFIED] [2023-04-01 11:07:13,968 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~n~0,QUANTIFIED] [2023-04-01 11:07:13,968 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~n~0,QUANTIFIED] [2023-04-01 11:07:13,969 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.04 11:07:13 BoogieIcfgContainer [2023-04-01 11:07:13,969 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-04-01 11:07:13,970 INFO L158 Benchmark]: Toolchain (without parser) took 4594.49ms. Allocated memory is still 349.2MB. Free memory was 308.8MB in the beginning and 165.2MB in the end (delta: 143.6MB). Peak memory consumption was 144.1MB. Max. memory is 8.0GB. [2023-04-01 11:07:13,970 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 192.9MB. Free memory is still 140.0MB. There was no memory consumed. Max. memory is 8.0GB. [2023-04-01 11:07:13,970 INFO L158 Benchmark]: CACSL2BoogieTranslator took 228.44ms. Allocated memory is still 349.2MB. Free memory was 308.3MB in the beginning and 298.3MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-04-01 11:07:13,970 INFO L158 Benchmark]: Boogie Preprocessor took 34.62ms. Allocated memory is still 349.2MB. Free memory was 298.3MB in the beginning and 296.8MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-04-01 11:07:13,971 INFO L158 Benchmark]: RCFGBuilder took 351.67ms. Allocated memory is still 349.2MB. Free memory was 296.8MB in the beginning and 284.7MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2023-04-01 11:07:13,971 INFO L158 Benchmark]: TraceAbstraction took 3973.41ms. Allocated memory is still 349.2MB. Free memory was 284.2MB in the beginning and 165.2MB in the end (delta: 119.0MB). Peak memory consumption was 120.0MB. Max. memory is 8.0GB. [2023-04-01 11:07:13,972 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 192.9MB. Free memory is still 140.0MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 228.44ms. Allocated memory is still 349.2MB. Free memory was 308.3MB in the beginning and 298.3MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 34.62ms. Allocated memory is still 349.2MB. Free memory was 298.3MB in the beginning and 296.8MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 351.67ms. Allocated memory is still 349.2MB. Free memory was 296.8MB in the beginning and 284.7MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * TraceAbstraction took 3973.41ms. Allocated memory is still 349.2MB. Free memory was 284.2MB in the beginning and 165.2MB in the end (delta: 119.0MB). Peak memory consumption was 120.0MB. 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_~n~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~n~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~n~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~n~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~n~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~n~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~n~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~n~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~n~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[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: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 23 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 3.9s, OverallIterations: 3, TraceHistogramMax: 2, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 7 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 7 mSDsluCounter, 115 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 84 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 126 IncrementalHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 31 mSDtfsCounter, 126 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 92 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 1.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=0, InterpolantAutomatonStates: 20, 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, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 10 PreInvPairs, 16 NumberOfFragments, 85 HoareAnnotationTreeSize, 10 FomulaSimplifications, 21 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 91 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 36 NumberOfCodeBlocks, 36 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 56 ConstructedInterpolants, 2 QuantifiedInterpolants, 235 SizeOfPredicates, 8 NumberOfNonLiveVariables, 177 ConjunctsInSsa, 37 ConjunctsInUnsatCore, 5 InterpolantComputations, 1 PerfectInterpolantSequences, 1/8 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 29]: Loop Invariant [2023-04-01 11:07:13,978 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~n~0,QUANTIFIED] [2023-04-01 11:07:13,978 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~n~0,QUANTIFIED] [2023-04-01 11:07:13,978 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~n~0,QUANTIFIED] [2023-04-01 11:07:13,978 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~n~0,QUANTIFIED] [2023-04-01 11:07:13,979 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~n~0,QUANTIFIED] [2023-04-01 11:07:13,979 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~n~0,QUANTIFIED] [2023-04-01 11:07:13,979 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~n~0,QUANTIFIED] [2023-04-01 11:07:13,979 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~n~0,QUANTIFIED] [2023-04-01 11:07:13,979 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~n~0,QUANTIFIED] [2023-04-01 11:07:13,979 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~n~0,QUANTIFIED] Derived loop invariant: (forall main_~n~0 : int :: (i * 2 + sum * 2 == main_~n~0 + main_~n~0 * main_~n~0 || i < main_~n~0) || main_~n~0 < i) && (i <= n || n + n * n == sum * 2) RESULT: Ultimate proved your program to be correct! [2023-04-01 11:07:13,992 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...