/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml --sifa.abstract.domain OctagonDomain -i ../sv-benchmarks/c/nla-digbench/egcd-ll.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-02 22:30:44,664 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-02 22:30:44,665 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-02 22:30:44,691 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-02 22:30:44,691 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-02 22:30:44,692 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-02 22:30:44,696 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-02 22:30:44,698 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-02 22:30:44,700 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-02 22:30:44,703 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-02 22:30:44,703 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-02 22:30:44,704 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-02 22:30:44,704 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-02 22:30:44,704 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-02 22:30:44,705 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-02 22:30:44,706 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-02 22:30:44,706 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-02 22:30:44,706 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-02 22:30:44,707 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-02 22:30:44,708 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-02 22:30:44,709 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-02 22:30:44,714 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-02 22:30:44,715 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-02 22:30:44,716 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-02 22:30:44,723 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-02 22:30:44,723 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-02 22:30:44,724 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-02 22:30:44,724 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-02 22:30:44,724 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-02 22:30:44,725 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-02 22:30:44,725 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-02 22:30:44,725 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-02 22:30:44,726 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-02 22:30:44,726 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-02 22:30:44,727 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-02 22:30:44,727 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-02 22:30:44,727 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-02 22:30:44,727 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-02 22:30:44,727 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-02 22:30:44,728 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-02 22:30:44,728 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-02 22:30:44,729 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 22:30:44,742 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-02 22:30:44,742 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-02 22:30:44,742 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-02 22:30:44,742 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-02 22:30:44,743 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-02 22:30:44,743 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-02 22:30:44,743 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-02 22:30:44,743 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-02 22:30:44,743 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-02 22:30:44,743 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-02 22:30:44,743 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-02 22:30:44,743 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-02 22:30:44,743 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-02 22:30:44,743 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-02 22:30:44,743 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-02 22:30:44,744 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-02 22:30:44,744 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-02 22:30:44,744 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-02 22:30:44,744 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-02 22:30:44,744 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-02 22:30:44,744 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-02 22:30:44,744 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-02 22:30:44,744 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-02 22:30:44,745 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-02 22:30:44,745 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-02 22:30:44,745 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-02 22:30:44,745 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-02 22:30:44,745 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-02 22:30:44,745 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-02 22:30:44,745 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-02 22:30:44,745 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-02 22:30:44,745 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-02 22:30:44,745 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 22:30:44,746 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-02 22:30:44,746 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-02 22:30:44,746 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-02 22:30:44,746 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-02 22:30:44,746 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-02 22:30:44,746 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-02 22:30:44,746 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-02 22:30:44,747 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-02 22:30:44,747 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> OctagonDomain [2023-04-02 22:30:44,941 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-02 22:30:44,953 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-02 22:30:44,955 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-02 22:30:44,955 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-02 22:30:44,956 INFO L275 PluginConnector]: CDTParser initialized [2023-04-02 22:30:44,956 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench/egcd-ll.c [2023-04-02 22:30:45,997 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-02 22:30:46,145 INFO L351 CDTParser]: Found 1 translation units. [2023-04-02 22:30:46,145 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench/egcd-ll.c [2023-04-02 22:30:46,149 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7985f2098/a043dba8f1964de9a716e8b34d1cad6b/FLAG547d4c90a [2023-04-02 22:30:46,164 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7985f2098/a043dba8f1964de9a716e8b34d1cad6b [2023-04-02 22:30:46,165 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-02 22:30:46,167 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-02 22:30:46,169 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-02 22:30:46,169 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-02 22:30:46,171 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-02 22:30:46,172 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 10:30:46" (1/1) ... [2023-04-02 22:30:46,172 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71bec732 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 10:30:46, skipping insertion in model container [2023-04-02 22:30:46,173 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 10:30:46" (1/1) ... [2023-04-02 22:30:46,177 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-02 22:30:46,188 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-02 22:30:46,281 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench/egcd-ll.c[489,502] [2023-04-02 22:30:46,291 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 22:30:46,297 INFO L203 MainTranslator]: Completed pre-run [2023-04-02 22:30:46,306 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench/egcd-ll.c[489,502] [2023-04-02 22:30:46,310 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 22:30:46,318 INFO L208 MainTranslator]: Completed translation [2023-04-02 22:30:46,318 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 10:30:46 WrapperNode [2023-04-02 22:30:46,319 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-02 22:30:46,319 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-02 22:30:46,319 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-02 22:30:46,319 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-02 22:30:46,326 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 10:30:46" (1/1) ... [2023-04-02 22:30:46,326 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 10:30:46" (1/1) ... [2023-04-02 22:30:46,331 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 10:30:46" (1/1) ... [2023-04-02 22:30:46,331 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 10:30:46" (1/1) ... [2023-04-02 22:30:46,341 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 10:30:46" (1/1) ... [2023-04-02 22:30:46,343 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 10:30:46" (1/1) ... [2023-04-02 22:30:46,344 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 10:30:46" (1/1) ... [2023-04-02 22:30:46,344 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 10:30:46" (1/1) ... [2023-04-02 22:30:46,345 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-02 22:30:46,346 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-02 22:30:46,346 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-02 22:30:46,346 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-02 22:30:46,347 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 10:30:46" (1/1) ... [2023-04-02 22:30:46,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 22:30:46,359 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 22:30:46,369 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 22:30:46,377 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 22:30:46,400 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-02 22:30:46,400 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-02 22:30:46,400 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-02 22:30:46,400 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-02 22:30:46,400 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-04-02 22:30:46,400 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-02 22:30:46,400 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-02 22:30:46,401 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-02 22:30:46,401 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-02 22:30:46,401 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-02 22:30:46,401 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-02 22:30:46,401 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-02 22:30:46,401 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-04-02 22:30:46,401 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-02 22:30:46,401 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-02 22:30:46,401 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-02 22:30:46,401 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-02 22:30:46,401 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-02 22:30:46,401 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-02 22:30:46,401 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-02 22:30:46,444 INFO L236 CfgBuilder]: Building ICFG [2023-04-02 22:30:46,446 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-02 22:30:46,557 INFO L277 CfgBuilder]: Performing block encoding [2023-04-02 22:30:46,590 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-02 22:30:46,590 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-04-02 22:30:46,592 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 10:30:46 BoogieIcfgContainer [2023-04-02 22:30:46,592 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-02 22:30:46,594 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-02 22:30:46,594 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-02 22:30:46,596 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-02 22:30:46,596 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.04 10:30:46" (1/3) ... [2023-04-02 22:30:46,596 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11132063 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 10:30:46, skipping insertion in model container [2023-04-02 22:30:46,597 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 10:30:46" (2/3) ... [2023-04-02 22:30:46,597 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11132063 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 10:30:46, skipping insertion in model container [2023-04-02 22:30:46,597 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 10:30:46" (3/3) ... [2023-04-02 22:30:46,598 INFO L112 eAbstractionObserver]: Analyzing ICFG egcd-ll.c [2023-04-02 22:30:46,610 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-02 22:30:46,610 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-02 22:30:46,639 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-02 22:30:46,643 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;@4087576, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-02 22:30:46,643 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-02 22:30:46,646 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 13 states have internal predecessors, (16), 11 states have call successors, (11), 4 states have call predecessors, (11), 4 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-04-02 22:30:46,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-04-02 22:30:46,650 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 22:30:46,651 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 22:30:46,651 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 22:30:46,654 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 22:30:46,655 INFO L85 PathProgramCache]: Analyzing trace with hash 1170290946, now seen corresponding path program 1 times [2023-04-02 22:30:46,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 22:30:46,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919193390] [2023-04-02 22:30:46,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 22:30:46,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 22:30:46,720 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 22:30:46,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [348144892] [2023-04-02 22:30:46,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 22:30:46,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 22:30:46,721 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 22:30:46,723 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 22:30:46,724 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 22:30:46,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 22:30:46,801 INFO L262 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 17 conjunts are in the unsatisfiable core [2023-04-02 22:30:46,805 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 22:30:46,989 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-04-02 22:30:46,989 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 22:30:47,071 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-04-02 22:30:47,072 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 22:30:47,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919193390] [2023-04-02 22:30:47,072 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 22:30:47,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [348144892] [2023-04-02 22:30:47,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [348144892] provided 1 perfect and 1 imperfect interpolant sequences [2023-04-02 22:30:47,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-02 22:30:47,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2023-04-02 22:30:47,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037614512] [2023-04-02 22:30:47,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 22:30:47,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-02 22:30:47,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 22:30:47,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-02 22:30:47,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-04-02 22:30:47,100 INFO L87 Difference]: Start difference. First operand has 29 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 13 states have internal predecessors, (16), 11 states have call successors, (11), 4 states have call predecessors, (11), 4 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-02 22:30:47,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 22:30:47,186 INFO L93 Difference]: Finished difference Result 63 states and 103 transitions. [2023-04-02 22:30:47,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-04-02 22:30:47,188 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 17 [2023-04-02 22:30:47,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 22:30:47,195 INFO L225 Difference]: With dead ends: 63 [2023-04-02 22:30:47,195 INFO L226 Difference]: Without dead ends: 38 [2023-04-02 22:30:47,199 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-04-02 22:30:47,203 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 8 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-02 22:30:47,206 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 92 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-02 22:30:47,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2023-04-02 22:30:47,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 37. [2023-04-02 22:30:47,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 15 states have (on average 1.2) internal successors, (18), 17 states have internal predecessors, (18), 17 states have call successors, (17), 5 states have call predecessors, (17), 4 states have return successors, (15), 14 states have call predecessors, (15), 15 states have call successors, (15) [2023-04-02 22:30:47,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 50 transitions. [2023-04-02 22:30:47,254 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 50 transitions. Word has length 17 [2023-04-02 22:30:47,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 22:30:47,255 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 50 transitions. [2023-04-02 22:30:47,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-02 22:30:47,256 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 50 transitions. [2023-04-02 22:30:47,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-04-02 22:30:47,257 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 22:30:47,257 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 22:30:47,265 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-04-02 22:30:47,462 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 22:30:47,462 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 22:30:47,463 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 22:30:47,463 INFO L85 PathProgramCache]: Analyzing trace with hash -2024058414, now seen corresponding path program 1 times [2023-04-02 22:30:47,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 22:30:47,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620248322] [2023-04-02 22:30:47,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 22:30:47,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 22:30:47,484 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 22:30:47,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [552034301] [2023-04-02 22:30:47,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 22:30:47,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 22:30:47,484 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 22:30:47,490 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 22:30:47,491 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 22:30:47,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 22:30:47,530 INFO L262 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 23 conjunts are in the unsatisfiable core [2023-04-02 22:30:47,532 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 22:30:47,631 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-04-02 22:30:47,632 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 22:30:47,697 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 22:30:47,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620248322] [2023-04-02 22:30:47,697 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 22:30:47,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [552034301] [2023-04-02 22:30:47,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [552034301] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 22:30:47,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [244138684] [2023-04-02 22:30:47,711 INFO L159 IcfgInterpreter]: Started Sifa with 19 locations of interest [2023-04-02 22:30:47,712 INFO L166 IcfgInterpreter]: Building call graph [2023-04-02 22:30:47,714 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-02 22:30:47,718 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-02 22:30:47,718 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-02 22:30:47,783 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 9 for LOIs [2023-04-02 22:30:47,928 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 11 for LOIs [2023-04-02 22:30:47,933 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 9 for LOIs [2023-04-02 22:30:47,934 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2023-04-02 22:30:47,939 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-02 22:30:48,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [244138684] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 22:30:48,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-02 22:30:48,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [10] total 20 [2023-04-02 22:30:48,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280961842] [2023-04-02 22:30:48,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 22:30:48,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-02 22:30:48,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 22:30:48,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-02 22:30:48,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=423, Unknown=0, NotChecked=0, Total=506 [2023-04-02 22:30:48,172 INFO L87 Difference]: Start difference. First operand 37 states and 50 transitions. Second operand has 12 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 5 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-04-02 22:30:48,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 22:30:48,846 INFO L93 Difference]: Finished difference Result 44 states and 56 transitions. [2023-04-02 22:30:48,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-04-02 22:30:48,846 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 5 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 22 [2023-04-02 22:30:48,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 22:30:48,847 INFO L225 Difference]: With dead ends: 44 [2023-04-02 22:30:48,847 INFO L226 Difference]: Without dead ends: 40 [2023-04-02 22:30:48,848 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=168, Invalid=762, Unknown=0, NotChecked=0, Total=930 [2023-04-02 22:30:48,849 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 47 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-02 22:30:48,849 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 10 Invalid, 262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-02 22:30:48,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2023-04-02 22:30:48,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2023-04-02 22:30:48,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 20 states have internal predecessors, (21), 16 states have call successors, (16), 6 states have call predecessors, (16), 5 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-04-02 22:30:48,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 50 transitions. [2023-04-02 22:30:48,861 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 50 transitions. Word has length 22 [2023-04-02 22:30:48,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 22:30:48,862 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 50 transitions. [2023-04-02 22:30:48,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 5 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-04-02 22:30:48,862 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 50 transitions. [2023-04-02 22:30:48,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-04-02 22:30:48,862 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 22:30:48,863 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 22:30:48,869 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 22:30:49,067 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 22:30:49,067 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 22:30:49,068 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 22:30:49,068 INFO L85 PathProgramCache]: Analyzing trace with hash -1278613244, now seen corresponding path program 1 times [2023-04-02 22:30:49,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 22:30:49,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338370846] [2023-04-02 22:30:49,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 22:30:49,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 22:30:49,098 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 22:30:49,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1883454738] [2023-04-02 22:30:49,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 22:30:49,098 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 22:30:49,098 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 22:30:49,102 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) [2023-04-02 22:30:49,104 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-04-02 22:30:49,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 22:30:49,140 INFO L262 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 8 conjunts are in the unsatisfiable core [2023-04-02 22:30:49,143 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 22:30:49,155 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-04-02 22:30:49,155 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-02 22:30:49,155 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 22:30:49,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338370846] [2023-04-02 22:30:49,156 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 22:30:49,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1883454738] [2023-04-02 22:30:49,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1883454738] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 22:30:49,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 22:30:49,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 22:30:49,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576759842] [2023-04-02 22:30:49,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 22:30:49,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-02 22:30:49,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 22:30:49,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-02 22:30:49,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-02 22:30:49,158 INFO L87 Difference]: Start difference. First operand 40 states and 50 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-04-02 22:30:49,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 22:30:49,200 INFO L93 Difference]: Finished difference Result 46 states and 55 transitions. [2023-04-02 22:30:49,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 22:30:49,200 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 33 [2023-04-02 22:30:49,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 22:30:49,202 INFO L225 Difference]: With dead ends: 46 [2023-04-02 22:30:49,202 INFO L226 Difference]: Without dead ends: 44 [2023-04-02 22:30:49,203 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-02 22:30:49,206 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 5 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-02 22:30:49,212 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 90 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-02 22:30:49,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2023-04-02 22:30:49,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2023-04-02 22:30:49,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 23 states have internal predecessors, (24), 16 states have call successors, (16), 7 states have call predecessors, (16), 6 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-04-02 22:30:49,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2023-04-02 22:30:49,233 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 33 [2023-04-02 22:30:49,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 22:30:49,233 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2023-04-02 22:30:49,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-04-02 22:30:49,233 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2023-04-02 22:30:49,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-04-02 22:30:49,234 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 22:30:49,234 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 22:30:49,257 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-04-02 22:30:49,441 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 [2023-04-02 22:30:49,441 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 22:30:49,441 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 22:30:49,441 INFO L85 PathProgramCache]: Analyzing trace with hash 689712086, now seen corresponding path program 1 times [2023-04-02 22:30:49,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 22:30:49,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420019607] [2023-04-02 22:30:49,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 22:30:49,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 22:30:49,464 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 22:30:49,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1106096310] [2023-04-02 22:30:49,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 22:30:49,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 22:30:49,465 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 22:30:49,478 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 22:30:49,479 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-04-02 22:30:49,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 22:30:49,518 INFO L262 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 20 conjunts are in the unsatisfiable core [2023-04-02 22:30:49,522 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 22:30:49,635 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-04-02 22:30:49,636 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 22:30:49,802 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-04-02 22:30:49,802 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 22:30:49,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420019607] [2023-04-02 22:30:49,802 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 22:30:49,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1106096310] [2023-04-02 22:30:49,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1106096310] provided 1 perfect and 1 imperfect interpolant sequences [2023-04-02 22:30:49,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-02 22:30:49,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 10 [2023-04-02 22:30:49,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698062462] [2023-04-02 22:30:49,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 22:30:49,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-02 22:30:49,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 22:30:49,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-02 22:30:49,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-04-02 22:30:49,804 INFO L87 Difference]: Start difference. First operand 44 states and 53 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-04-02 22:30:49,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 22:30:49,853 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2023-04-02 22:30:49,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-04-02 22:30:49,853 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 34 [2023-04-02 22:30:49,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 22:30:49,854 INFO L225 Difference]: With dead ends: 50 [2023-04-02 22:30:49,854 INFO L226 Difference]: Without dead ends: 48 [2023-04-02 22:30:49,854 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-04-02 22:30:49,855 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 7 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-02 22:30:49,855 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 72 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-02 22:30:49,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2023-04-02 22:30:49,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2023-04-02 22:30:49,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 24 states have (on average 1.125) internal successors, (27), 26 states have internal predecessors, (27), 16 states have call successors, (16), 8 states have call predecessors, (16), 7 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-04-02 22:30:49,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 56 transitions. [2023-04-02 22:30:49,870 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 56 transitions. Word has length 34 [2023-04-02 22:30:49,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 22:30:49,870 INFO L495 AbstractCegarLoop]: Abstraction has 48 states and 56 transitions. [2023-04-02 22:30:49,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-04-02 22:30:49,871 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 56 transitions. [2023-04-02 22:30:49,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-04-02 22:30:49,871 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 22:30:49,871 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 22:30:49,878 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-04-02 22:30:50,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 22:30:50,076 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 22:30:50,077 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 22:30:50,077 INFO L85 PathProgramCache]: Analyzing trace with hash -150889904, now seen corresponding path program 1 times [2023-04-02 22:30:50,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 22:30:50,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35115707] [2023-04-02 22:30:50,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 22:30:50,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 22:30:50,098 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 22:30:50,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1397596260] [2023-04-02 22:30:50,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 22:30:50,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 22:30:50,099 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 22:30:50,102 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 22:30:50,122 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-04-02 22:30:50,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 22:30:50,144 INFO L262 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 18 conjunts are in the unsatisfiable core [2023-04-02 22:30:50,146 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 22:30:50,199 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 15 proven. 5 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-04-02 22:30:50,200 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 22:30:50,279 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 15 proven. 5 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-04-02 22:30:50,279 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 22:30:50,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35115707] [2023-04-02 22:30:50,279 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 22:30:50,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1397596260] [2023-04-02 22:30:50,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1397596260] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 22:30:50,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [111332253] [2023-04-02 22:30:50,281 INFO L159 IcfgInterpreter]: Started Sifa with 23 locations of interest [2023-04-02 22:30:50,281 INFO L166 IcfgInterpreter]: Building call graph [2023-04-02 22:30:50,282 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-02 22:30:50,282 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-02 22:30:50,282 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-02 22:30:50,296 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 9 for LOIs [2023-04-02 22:30:50,482 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 11 for LOIs [2023-04-02 22:30:50,485 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 9 for LOIs [2023-04-02 22:30:50,486 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2023-04-02 22:30:50,488 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-02 22:30:50,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [111332253] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 22:30:50,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-04-02 22:30:50,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [9, 8] total 23 [2023-04-02 22:30:50,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187341568] [2023-04-02 22:30:50,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 22:30:50,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-04-02 22:30:50,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 22:30:50,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-04-02 22:30:50,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=418, Unknown=0, NotChecked=0, Total=506 [2023-04-02 22:30:50,783 INFO L87 Difference]: Start difference. First operand 48 states and 56 transitions. Second operand has 13 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 6 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2023-04-02 22:30:51,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 22:30:51,444 INFO L93 Difference]: Finished difference Result 58 states and 64 transitions. [2023-04-02 22:30:51,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-04-02 22:30:51,445 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 6 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) Word has length 38 [2023-04-02 22:30:51,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 22:30:51,445 INFO L225 Difference]: With dead ends: 58 [2023-04-02 22:30:51,445 INFO L226 Difference]: Without dead ends: 46 [2023-04-02 22:30:51,446 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 173 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=186, Invalid=806, Unknown=0, NotChecked=0, Total=992 [2023-04-02 22:30:51,446 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 49 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-02 22:30:51,447 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 9 Invalid, 277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 205 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-02 22:30:51,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2023-04-02 22:30:51,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2023-04-02 22:30:51,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 24 states have (on average 1.0833333333333333) internal successors, (26), 25 states have internal predecessors, (26), 14 states have call successors, (14), 8 states have call predecessors, (14), 7 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-04-02 22:30:51,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 52 transitions. [2023-04-02 22:30:51,456 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 52 transitions. Word has length 38 [2023-04-02 22:30:51,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 22:30:51,456 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 52 transitions. [2023-04-02 22:30:51,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 6 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2023-04-02 22:30:51,456 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 52 transitions. [2023-04-02 22:30:51,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-04-02 22:30:51,457 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 22:30:51,457 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 22:30:51,475 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-04-02 22:30:51,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 22:30:51,664 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 22:30:51,664 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 22:30:51,664 INFO L85 PathProgramCache]: Analyzing trace with hash 181076862, now seen corresponding path program 2 times [2023-04-02 22:30:51,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 22:30:51,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654062913] [2023-04-02 22:30:51,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 22:30:51,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 22:30:51,688 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 22:30:51,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1203839487] [2023-04-02 22:30:51,688 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-04-02 22:30:51,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 22:30:51,689 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 22:30:51,689 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 22:30:51,691 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-04-02 22:30:51,725 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-04-02 22:30:51,726 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-02 22:30:51,727 INFO L262 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 27 conjunts are in the unsatisfiable core [2023-04-02 22:30:51,728 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 22:30:51,940 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-04-02 22:30:51,941 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 22:30:52,154 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-04-02 22:30:52,154 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 22:30:52,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654062913] [2023-04-02 22:30:52,154 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 22:30:52,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1203839487] [2023-04-02 22:30:52,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1203839487] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 22:30:52,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [542379886] [2023-04-02 22:30:52,156 INFO L159 IcfgInterpreter]: Started Sifa with 21 locations of interest [2023-04-02 22:30:52,156 INFO L166 IcfgInterpreter]: Building call graph [2023-04-02 22:30:52,156 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-02 22:30:52,156 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-02 22:30:52,156 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-02 22:30:52,168 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 9 for LOIs [2023-04-02 22:30:53,010 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2023-04-02 22:30:53,012 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 9 for LOIs [2023-04-02 22:30:53,013 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2023-04-02 22:30:53,015 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-02 22:30:53,553 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1823#(and (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0))' at error location [2023-04-02 22:30:53,553 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-02 22:30:53,553 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-04-02 22:30:53,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6] total 13 [2023-04-02 22:30:53,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986690309] [2023-04-02 22:30:53,553 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-04-02 22:30:53,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-04-02 22:30:53,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 22:30:53,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-04-02 22:30:53,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=436, Unknown=0, NotChecked=0, Total=506 [2023-04-02 22:30:53,558 INFO L87 Difference]: Start difference. First operand 46 states and 52 transitions. Second operand has 13 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 10 states have internal predecessors, (21), 6 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (13), 7 states have call predecessors, (13), 6 states have call successors, (13) [2023-04-02 22:30:54,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 22:30:54,663 INFO L93 Difference]: Finished difference Result 70 states and 89 transitions. [2023-04-02 22:30:54,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-04-02 22:30:54,663 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 10 states have internal predecessors, (21), 6 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (13), 7 states have call predecessors, (13), 6 states have call successors, (13) Word has length 39 [2023-04-02 22:30:54,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 22:30:54,664 INFO L225 Difference]: With dead ends: 70 [2023-04-02 22:30:54,664 INFO L226 Difference]: Without dead ends: 68 [2023-04-02 22:30:54,665 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 87 SyntacticMatches, 8 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=102, Invalid=600, Unknown=0, NotChecked=0, Total=702 [2023-04-02 22:30:54,665 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 21 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-02 22:30:54,665 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 113 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-02 22:30:54,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2023-04-02 22:30:54,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 58. [2023-04-02 22:30:54,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 30 states have (on average 1.1) internal successors, (33), 32 states have internal predecessors, (33), 19 states have call successors, (19), 9 states have call predecessors, (19), 8 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17) [2023-04-02 22:30:54,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 69 transitions. [2023-04-02 22:30:54,679 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 69 transitions. Word has length 39 [2023-04-02 22:30:54,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 22:30:54,679 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 69 transitions. [2023-04-02 22:30:54,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 10 states have internal predecessors, (21), 6 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (13), 7 states have call predecessors, (13), 6 states have call successors, (13) [2023-04-02 22:30:54,679 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 69 transitions. [2023-04-02 22:30:54,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-04-02 22:30:54,680 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 22:30:54,680 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 22:30:54,684 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-04-02 22:30:54,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 22:30:54,885 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 22:30:54,885 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 22:30:54,885 INFO L85 PathProgramCache]: Analyzing trace with hash 110480534, now seen corresponding path program 3 times [2023-04-02 22:30:54,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 22:30:54,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814529394] [2023-04-02 22:30:54,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 22:30:54,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 22:30:54,892 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 22:30:54,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [479866993] [2023-04-02 22:30:54,892 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-04-02 22:30:54,892 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 22:30:54,892 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 22:30:54,893 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 22:30:54,894 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-04-02 22:30:54,929 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-04-02 22:30:54,930 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-02 22:30:54,930 INFO L262 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 32 conjunts are in the unsatisfiable core [2023-04-02 22:30:54,932 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 22:30:55,257 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 20 proven. 13 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-04-02 22:30:55,257 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 22:30:55,547 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 22:30:55,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814529394] [2023-04-02 22:30:55,547 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 22:30:55,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [479866993] [2023-04-02 22:30:55,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [479866993] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 22:30:55,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [326120666] [2023-04-02 22:30:55,548 INFO L159 IcfgInterpreter]: Started Sifa with 21 locations of interest [2023-04-02 22:30:55,548 INFO L166 IcfgInterpreter]: Building call graph [2023-04-02 22:30:55,549 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-02 22:30:55,549 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-02 22:30:55,549 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-02 22:30:55,560 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 9 for LOIs [2023-04-02 22:30:56,292 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2023-04-02 22:30:56,293 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 9 for LOIs [2023-04-02 22:30:56,294 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2023-04-02 22:30:56,296 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-02 22:30:57,365 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2240#(and (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0))' at error location [2023-04-02 22:30:57,365 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-02 22:30:57,365 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-04-02 22:30:57,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2023-04-02 22:30:57,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713424517] [2023-04-02 22:30:57,365 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-04-02 22:30:57,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-02 22:30:57,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 22:30:57,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-02 22:30:57,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=612, Unknown=0, NotChecked=0, Total=702 [2023-04-02 22:30:57,367 INFO L87 Difference]: Start difference. First operand 58 states and 69 transitions. Second operand has 12 states, 10 states have (on average 1.7) internal successors, (17), 8 states have internal predecessors, (17), 5 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2023-04-02 22:30:57,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 22:30:57,623 INFO L93 Difference]: Finished difference Result 72 states and 84 transitions. [2023-04-02 22:30:57,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-04-02 22:30:57,623 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 1.7) internal successors, (17), 8 states have internal predecessors, (17), 5 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) Word has length 44 [2023-04-02 22:30:57,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 22:30:57,625 INFO L225 Difference]: With dead ends: 72 [2023-04-02 22:30:57,625 INFO L226 Difference]: Without dead ends: 64 [2023-04-02 22:30:57,625 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 70 SyntacticMatches, 10 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 303 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=106, Invalid=706, Unknown=0, NotChecked=0, Total=812 [2023-04-02 22:30:57,626 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 18 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 22:30:57,626 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 72 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 22:30:57,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2023-04-02 22:30:57,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2023-04-02 22:30:57,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 33 states have (on average 1.0909090909090908) internal successors, (36), 36 states have internal predecessors, (36), 21 states have call successors, (21), 10 states have call predecessors, (21), 9 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) [2023-04-02 22:30:57,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 75 transitions. [2023-04-02 22:30:57,640 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 75 transitions. Word has length 44 [2023-04-02 22:30:57,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 22:30:57,640 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 75 transitions. [2023-04-02 22:30:57,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 1.7) internal successors, (17), 8 states have internal predecessors, (17), 5 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2023-04-02 22:30:57,640 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 75 transitions. [2023-04-02 22:30:57,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-04-02 22:30:57,641 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 22:30:57,641 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 22:30:57,646 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-04-02 22:30:57,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 22:30:57,846 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 22:30:57,846 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 22:30:57,846 INFO L85 PathProgramCache]: Analyzing trace with hash 1628468220, now seen corresponding path program 1 times [2023-04-02 22:30:57,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 22:30:57,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452079202] [2023-04-02 22:30:57,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 22:30:57,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 22:30:57,852 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 22:30:57,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [158283020] [2023-04-02 22:30:57,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 22:30:57,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 22:30:57,853 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 22:30:57,857 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 22:30:57,884 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-04-02 22:30:57,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 22:30:57,897 INFO L262 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 18 conjunts are in the unsatisfiable core [2023-04-02 22:30:57,898 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 22:30:57,939 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 41 proven. 5 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2023-04-02 22:30:57,939 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 22:30:58,014 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 41 proven. 5 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2023-04-02 22:30:58,014 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 22:30:58,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452079202] [2023-04-02 22:30:58,014 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 22:30:58,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [158283020] [2023-04-02 22:30:58,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [158283020] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 22:30:58,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1416400546] [2023-04-02 22:30:58,016 INFO L159 IcfgInterpreter]: Started Sifa with 23 locations of interest [2023-04-02 22:30:58,016 INFO L166 IcfgInterpreter]: Building call graph [2023-04-02 22:30:58,017 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-02 22:30:58,017 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-02 22:30:58,017 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-02 22:30:58,025 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 9 for LOIs [2023-04-02 22:30:58,792 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2023-04-02 22:30:58,794 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 9 for LOIs [2023-04-02 22:30:58,795 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2023-04-02 22:30:58,798 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-02 22:30:59,552 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2802#(and (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0))' at error location [2023-04-02 22:30:59,553 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-02 22:30:59,553 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-04-02 22:30:59,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 12 [2023-04-02 22:30:59,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564846536] [2023-04-02 22:30:59,553 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-04-02 22:30:59,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-02 22:30:59,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 22:30:59,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-02 22:30:59,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=393, Unknown=0, NotChecked=0, Total=462 [2023-04-02 22:30:59,554 INFO L87 Difference]: Start difference. First operand 64 states and 75 transitions. Second operand has 12 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 5 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (10), 3 states have call predecessors, (10), 4 states have call successors, (10) [2023-04-02 22:30:59,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 22:30:59,693 INFO L93 Difference]: Finished difference Result 74 states and 83 transitions. [2023-04-02 22:30:59,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-04-02 22:30:59,694 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 5 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (10), 3 states have call predecessors, (10), 4 states have call successors, (10) Word has length 55 [2023-04-02 22:30:59,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 22:30:59,694 INFO L225 Difference]: With dead ends: 74 [2023-04-02 22:30:59,694 INFO L226 Difference]: Without dead ends: 70 [2023-04-02 22:30:59,695 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 134 SyntacticMatches, 11 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=78, Invalid=428, Unknown=0, NotChecked=0, Total=506 [2023-04-02 22:30:59,695 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 14 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 22:30:59,703 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 78 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 22:30:59,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2023-04-02 22:30:59,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2023-04-02 22:30:59,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 39 states have (on average 1.0512820512820513) internal successors, (41), 41 states have internal predecessors, (41), 19 states have call successors, (19), 12 states have call predecessors, (19), 11 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17) [2023-04-02 22:30:59,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 77 transitions. [2023-04-02 22:30:59,730 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 77 transitions. Word has length 55 [2023-04-02 22:30:59,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 22:30:59,730 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 77 transitions. [2023-04-02 22:30:59,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 5 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (10), 3 states have call predecessors, (10), 4 states have call successors, (10) [2023-04-02 22:30:59,730 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 77 transitions. [2023-04-02 22:30:59,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-04-02 22:30:59,731 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 22:30:59,731 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 22:30:59,741 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-04-02 22:30:59,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-04-02 22:30:59,932 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 22:30:59,932 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 22:30:59,932 INFO L85 PathProgramCache]: Analyzing trace with hash -519195326, now seen corresponding path program 4 times [2023-04-02 22:30:59,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 22:30:59,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065982169] [2023-04-02 22:30:59,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 22:30:59,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 22:30:59,938 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 22:30:59,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1900110144] [2023-04-02 22:30:59,938 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-04-02 22:30:59,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 22:30:59,939 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 22:30:59,939 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 22:30:59,942 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-04-02 22:30:59,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 22:30:59,987 INFO L262 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 49 conjunts are in the unsatisfiable core [2023-04-02 22:30:59,989 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 22:31:00,765 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 37 proven. 37 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2023-04-02 22:31:00,765 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 22:31:01,101 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 47 proven. 15 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2023-04-02 22:31:01,101 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 22:31:01,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065982169] [2023-04-02 22:31:01,102 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 22:31:01,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1900110144] [2023-04-02 22:31:01,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1900110144] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 22:31:01,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1270823488] [2023-04-02 22:31:01,103 INFO L159 IcfgInterpreter]: Started Sifa with 21 locations of interest [2023-04-02 22:31:01,103 INFO L166 IcfgInterpreter]: Building call graph [2023-04-02 22:31:01,103 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-02 22:31:01,103 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-02 22:31:01,103 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-02 22:31:01,125 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 9 for LOIs [2023-04-02 22:31:01,804 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2023-04-02 22:31:01,806 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 9 for LOIs [2023-04-02 22:31:01,807 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2023-04-02 22:31:01,809 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-02 22:31:02,816 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3411#(and (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0))' at error location [2023-04-02 22:31:02,816 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-02 22:31:02,816 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-04-02 22:31:02,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8] total 17 [2023-04-02 22:31:02,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351818235] [2023-04-02 22:31:02,817 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-04-02 22:31:02,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-04-02 22:31:02,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 22:31:02,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-04-02 22:31:02,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=563, Unknown=0, NotChecked=0, Total=650 [2023-04-02 22:31:02,818 INFO L87 Difference]: Start difference. First operand 70 states and 77 transitions. Second operand has 17 states, 14 states have (on average 2.0) internal successors, (28), 12 states have internal predecessors, (28), 7 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (20), 9 states have call predecessors, (20), 7 states have call successors, (20) [2023-04-02 22:31:04,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 22:31:04,460 INFO L93 Difference]: Finished difference Result 90 states and 99 transitions. [2023-04-02 22:31:04,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-04-02 22:31:04,461 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 14 states have (on average 2.0) internal successors, (28), 12 states have internal predecessors, (28), 7 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (20), 9 states have call predecessors, (20), 7 states have call successors, (20) Word has length 61 [2023-04-02 22:31:04,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 22:31:04,461 INFO L225 Difference]: With dead ends: 90 [2023-04-02 22:31:04,461 INFO L226 Difference]: Without dead ends: 72 [2023-04-02 22:31:04,462 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 146 SyntacticMatches, 15 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 336 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=124, Invalid=746, Unknown=0, NotChecked=0, Total=870 [2023-04-02 22:31:04,462 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 30 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 343 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-04-02 22:31:04,462 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 107 Invalid, 391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 343 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-04-02 22:31:04,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2023-04-02 22:31:04,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 70. [2023-04-02 22:31:04,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 42 states have (on average 1.0238095238095237) internal successors, (43), 43 states have internal predecessors, (43), 15 states have call successors, (15), 13 states have call predecessors, (15), 12 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2023-04-02 22:31:04,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 72 transitions. [2023-04-02 22:31:04,475 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 72 transitions. Word has length 61 [2023-04-02 22:31:04,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 22:31:04,475 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 72 transitions. [2023-04-02 22:31:04,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 14 states have (on average 2.0) internal successors, (28), 12 states have internal predecessors, (28), 7 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (20), 9 states have call predecessors, (20), 7 states have call successors, (20) [2023-04-02 22:31:04,475 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 72 transitions. [2023-04-02 22:31:04,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-04-02 22:31:04,476 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 22:31:04,476 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 4, 4, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 22:31:04,484 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-04-02 22:31:04,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 22:31:04,680 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 22:31:04,681 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 22:31:04,681 INFO L85 PathProgramCache]: Analyzing trace with hash -1065638402, now seen corresponding path program 5 times [2023-04-02 22:31:04,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 22:31:04,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28939390] [2023-04-02 22:31:04,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 22:31:04,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 22:31:04,687 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 22:31:04,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [510513697] [2023-04-02 22:31:04,687 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-04-02 22:31:04,687 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 22:31:04,687 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 22:31:04,688 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 22:31:04,691 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-04-02 22:31:07,985 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-04-02 22:31:07,985 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-02 22:31:07,987 INFO L262 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 56 conjunts are in the unsatisfiable core [2023-04-02 22:31:07,989 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 22:31:13,965 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 107 proven. 8 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2023-04-02 22:31:13,965 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 22:31:14,659 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 93 proven. 3 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2023-04-02 22:31:14,659 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 22:31:14,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28939390] [2023-04-02 22:31:14,660 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 22:31:14,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [510513697] [2023-04-02 22:31:14,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [510513697] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 22:31:14,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1032609361] [2023-04-02 22:31:14,661 INFO L159 IcfgInterpreter]: Started Sifa with 21 locations of interest [2023-04-02 22:31:14,661 INFO L166 IcfgInterpreter]: Building call graph [2023-04-02 22:31:14,661 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-02 22:31:14,661 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-02 22:31:14,661 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-02 22:31:14,672 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 9 for LOIs [2023-04-02 22:31:15,318 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2023-04-02 22:31:15,320 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 9 for LOIs [2023-04-02 22:31:15,321 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2023-04-02 22:31:15,323 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-02 22:31:19,187 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4123#(and (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0))' at error location [2023-04-02 22:31:19,187 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-02 22:31:19,187 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-04-02 22:31:19,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 9] total 22 [2023-04-02 22:31:19,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462180503] [2023-04-02 22:31:19,187 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-04-02 22:31:19,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-04-02 22:31:19,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 22:31:19,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-04-02 22:31:19,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=804, Unknown=2, NotChecked=0, Total=930 [2023-04-02 22:31:19,189 INFO L87 Difference]: Start difference. First operand 70 states and 72 transitions. Second operand has 22 states, 15 states have (on average 2.0) internal successors, (30), 13 states have internal predecessors, (30), 12 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (19), 10 states have call predecessors, (19), 10 states have call successors, (19) [2023-04-02 22:31:22,651 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-04-02 22:31:25,108 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-04-02 22:31:27,111 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-04-02 22:31:29,122 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-04-02 22:31:30,927 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.80s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-04-02 22:31:32,931 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-04-02 22:31:32,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 22:31:32,965 INFO L93 Difference]: Finished difference Result 70 states and 72 transitions. [2023-04-02 22:31:32,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-04-02 22:31:32,965 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 15 states have (on average 2.0) internal successors, (30), 13 states have internal predecessors, (30), 12 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (19), 10 states have call predecessors, (19), 10 states have call successors, (19) Word has length 73 [2023-04-02 22:31:32,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 22:31:32,966 INFO L225 Difference]: With dead ends: 70 [2023-04-02 22:31:32,966 INFO L226 Difference]: Without dead ends: 0 [2023-04-02 22:31:32,966 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 170 SyntacticMatches, 21 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 506 ImplicationChecksByTransitivity, 10.4s TimeCoverageRelationStatistics Valid=148, Invalid=906, Unknown=2, NotChecked=0, Total=1056 [2023-04-02 22:31:32,967 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 12 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 19 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.4s IncrementalHoareTripleChecker+Time [2023-04-02 22:31:32,967 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 48 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 105 Invalid, 5 Unknown, 0 Unchecked, 12.4s Time] [2023-04-02 22:31:32,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-04-02 22:31:32,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-04-02 22:31:32,967 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 22:31:32,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-04-02 22:31:32,967 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 73 [2023-04-02 22:31:32,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 22:31:32,968 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-04-02 22:31:32,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 15 states have (on average 2.0) internal successors, (30), 13 states have internal predecessors, (30), 12 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (19), 10 states have call predecessors, (19), 10 states have call successors, (19) [2023-04-02 22:31:32,968 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-04-02 22:31:32,968 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-04-02 22:31:32,970 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-04-02 22:31:32,977 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-04-02 22:31:33,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-04-02 22:31:33,177 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-04-02 22:32:05,489 WARN L223 SmtUtils]: Spent 23.93s on a formula simplification. DAG size of input: 136 DAG size of output: 96 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2023-04-02 22:32:28,066 WARN L223 SmtUtils]: Spent 22.55s on a formula simplification. DAG size of input: 135 DAG size of output: 75 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2023-04-02 22:32:51,446 WARN L223 SmtUtils]: Spent 23.29s on a formula simplification. DAG size of input: 135 DAG size of output: 96 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2023-04-02 22:33:04,913 WARN L223 SmtUtils]: Spent 13.46s on a formula simplification. DAG size of input: 135 DAG size of output: 75 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2023-04-02 22:33:04,915 INFO L899 garLoopResultBuilder]: For program point reach_errorEXIT(line 4) no Hoare annotation was computed. [2023-04-02 22:33:04,915 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line 4) no Hoare annotation was computed. [2023-04-02 22:33:04,915 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 7 9) the Hoare annotation is: true [2023-04-02 22:33:04,915 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 7 9) no Hoare annotation was computed. [2023-04-02 22:33:04,915 INFO L895 garLoopResultBuilder]: At program point L33-2(lines 33 50) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (or (not (= (select .cse0 0) 48)) (not (= |#NULL.offset| 0)) (not (= 2 (select |#length| 1))) (not (= (select |#valid| 3) 1)) (not (= (select |#length| 3) 12)) (not (= (select |#valid| 0) 0)) (not (= (select .cse0 1) 0)) (not (= (select |#valid| 1) 1)) (and (= main_~b~0 main_~a~0) (= main_~b~0 (+ (* main_~q~0 main_~x~0) (* main_~y~0 main_~s~0))) (<= 1 main_~x~0) (<= main_~y~0 2147483647) (= main_~a~0 (+ (* main_~y~0 main_~r~0) (* main_~p~0 main_~x~0))) (<= main_~x~0 2147483647) (<= 1 main_~y~0) (= (* main_~p~0 main_~s~0) (+ (* main_~q~0 main_~r~0) 1))) (not (= |#NULL.base| 0)) (not (= 10 (select |#length| 2))) (not (= (select |#valid| 2) 1)) (<= |#StackHeapBarrier| 0))) [2023-04-02 22:33:04,915 INFO L899 garLoopResultBuilder]: For program point mainEXIT(lines 18 57) no Hoare annotation was computed. [2023-04-02 22:33:04,915 INFO L895 garLoopResultBuilder]: At program point L23(line 23) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (or (not (= (select .cse0 0) 48)) (not (= |#NULL.offset| 0)) (not (= 2 (select |#length| 1))) (not (= (select |#valid| 3) 1)) (and (<= main_~y~0 2147483647) (<= main_~x~0 2147483647) (<= 0 (+ main_~x~0 2147483648)) (<= 0 (+ main_~y~0 2147483648))) (not (= (select |#length| 3) 12)) (not (= (select |#valid| 0) 0)) (not (= (select .cse0 1) 0)) (not (= (select |#valid| 1) 1)) (not (= |#NULL.base| 0)) (not (= 10 (select |#length| 2))) (not (= (select |#valid| 2) 1)) (<= |#StackHeapBarrier| 0))) [2023-04-02 22:33:04,916 INFO L895 garLoopResultBuilder]: At program point L23-1(line 23) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (or (not (= (select .cse0 0) 48)) (and (<= 1 main_~x~0) (<= main_~y~0 2147483647) (<= main_~x~0 2147483647) (<= 0 (+ main_~y~0 2147483648))) (not (= |#NULL.offset| 0)) (not (= 2 (select |#length| 1))) (not (= (select |#valid| 3) 1)) (not (= (select |#length| 3) 12)) (not (= (select |#valid| 0) 0)) (not (= (select .cse0 1) 0)) (not (= (select |#valid| 1) 1)) (not (= |#NULL.base| 0)) (not (= 10 (select |#length| 2))) (not (= (select |#valid| 2) 1)) (<= |#StackHeapBarrier| 0))) [2023-04-02 22:33:04,916 INFO L895 garLoopResultBuilder]: At program point L54(line 54) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1)) (.cse3 (= main_~b~0 main_~a~0)) (.cse5 (+ (* main_~q~0 main_~r~0) 1)) (.cse4 (<= 1 main_~x~0)) (.cse6 (<= main_~y~0 2147483647)) (.cse7 (= main_~s~0 1)) (.cse8 (<= main_~x~0 2147483647)) (.cse2 (= main_~b~0 main_~y~0)) (.cse9 (<= 1 main_~y~0)) (.cse1 (= main_~p~0 1))) (or (not (= (select .cse0 0) 48)) (and (or (and (= main_~y~0 (+ main_~b~0 main_~x~0)) (<= main_~x~0 main_~y~0) (= (+ main_~q~0 1) 0) .cse1) (and (= (+ main_~r~0 1) 0) (< main_~y~0 main_~x~0) .cse2 .cse1)) .cse3 .cse4 (= main_~p~0 .cse5) .cse6 .cse7 .cse8 .cse9) (not (= |#NULL.offset| 0)) (not (= 2 (select |#length| 1))) (not (= (select |#valid| 3) 1)) (not (= (select |#length| 3) 12)) (not (= (select |#valid| 0) 0)) (not (= (select .cse0 1) 0)) (not (= (select |#valid| 1) 1)) (and .cse3 (= main_~b~0 (+ (* main_~q~0 main_~x~0) (* main_~y~0 main_~s~0))) .cse4 .cse6 (= main_~a~0 (+ (* main_~y~0 main_~r~0) (* main_~p~0 main_~x~0))) .cse8 .cse9 (= (* main_~p~0 main_~s~0) .cse5)) (not (= |#NULL.base| 0)) (and (= main_~r~0 0) .cse4 .cse6 .cse7 .cse8 .cse2 (= main_~q~0 0) .cse9 (= main_~a~0 main_~x~0) .cse1) (not (= 10 (select |#length| 2))) (not (= (select |#valid| 2) 1)) (<= |#StackHeapBarrier| 0))) [2023-04-02 22:33:04,916 INFO L895 garLoopResultBuilder]: At program point L52(line 52) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (or (not (= (select .cse0 0) 48)) (not (= |#NULL.offset| 0)) (not (= 2 (select |#length| 1))) (not (= (select |#valid| 3) 1)) (not (= (select |#length| 3) 12)) (not (= (select |#valid| 0) 0)) (not (= (select .cse0 1) 0)) (not (= (select |#valid| 1) 1)) (and (= main_~b~0 main_~a~0) (= main_~b~0 (+ (* main_~q~0 main_~x~0) (* main_~y~0 main_~s~0))) (<= 1 main_~x~0) (<= main_~y~0 2147483647) (= main_~a~0 (+ (* main_~y~0 main_~r~0) (* main_~p~0 main_~x~0))) (<= main_~x~0 2147483647) (<= 1 main_~y~0) (= (* main_~p~0 main_~s~0) (+ (* main_~q~0 main_~r~0) 1))) (not (= |#NULL.base| 0)) (not (= 10 (select |#length| 2))) (not (= (select |#valid| 2) 1)) (<= |#StackHeapBarrier| 0))) [2023-04-02 22:33:04,916 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 18 57) the Hoare annotation is: true [2023-04-02 22:33:04,916 INFO L899 garLoopResultBuilder]: For program point L36(lines 33 50) no Hoare annotation was computed. [2023-04-02 22:33:04,916 INFO L895 garLoopResultBuilder]: At program point L34(line 34) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (or (not (= (select .cse0 0) 48)) (not (= |#NULL.offset| 0)) (not (= 2 (select |#length| 1))) (not (= (select |#valid| 3) 1)) (not (= (select |#length| 3) 12)) (not (= (select |#valid| 0) 0)) (not (= (select .cse0 1) 0)) (not (= (select |#valid| 1) 1)) (not (= |#NULL.base| 0)) (not (= 10 (select |#length| 2))) (not (= (select |#valid| 2) 1)) (let ((.cse2 (* main_~y~0 main_~r~0)) (.cse3 (* main_~p~0 main_~x~0))) (let ((.cse1 (+ (* main_~q~0 main_~x~0) .cse2 .cse3 (* main_~y~0 main_~s~0)))) (and (<= 1 main_~x~0) (= .cse1 (+ main_~b~0 main_~a~0)) (not (= .cse1 0)) (<= main_~y~0 2147483647) (= main_~a~0 (+ .cse2 .cse3)) (<= main_~x~0 2147483647) (<= 0 .cse1) (<= 1 main_~y~0) (= (* main_~p~0 main_~s~0) (+ (* main_~q~0 main_~r~0) 1))))) (<= |#StackHeapBarrier| 0))) [2023-04-02 22:33:04,916 INFO L895 garLoopResultBuilder]: At program point L34-1(line 34) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (or (not (= (select .cse0 0) 48)) (not (= |#NULL.offset| 0)) (not (= 2 (select |#length| 1))) (not (= (select |#valid| 3) 1)) (not (= (select |#length| 3) 12)) (not (= (select |#valid| 0) 0)) (not (= (select .cse0 1) 0)) (not (= (select |#valid| 1) 1)) (not (= |#NULL.base| 0)) (not (= 10 (select |#length| 2))) (not (= (select |#valid| 2) 1)) (let ((.cse2 (* main_~y~0 main_~r~0)) (.cse3 (* main_~p~0 main_~x~0))) (let ((.cse1 (+ (* main_~q~0 main_~x~0) .cse2 .cse3 (* main_~y~0 main_~s~0)))) (and (<= 1 main_~x~0) (= .cse1 (+ main_~b~0 main_~a~0)) (not (= .cse1 0)) (<= main_~y~0 2147483647) (= main_~a~0 (+ .cse2 .cse3)) (<= main_~x~0 2147483647) (<= 0 .cse1) (<= 1 main_~y~0) (= (* main_~p~0 main_~s~0) (+ (* main_~q~0 main_~r~0) 1))))) (<= |#StackHeapBarrier| 0))) [2023-04-02 22:33:04,916 INFO L899 garLoopResultBuilder]: For program point L24(line 24) no Hoare annotation was computed. [2023-04-02 22:33:04,916 INFO L899 garLoopResultBuilder]: For program point L55(line 55) no Hoare annotation was computed. [2023-04-02 22:33:04,917 INFO L895 garLoopResultBuilder]: At program point L53(line 53) the Hoare annotation is: (let ((.cse4 (= main_~b~0 main_~y~0)) (.cse6 (= main_~p~0 1)) (.cse7 (select |#memory_int| 1)) (.cse8 (= main_~b~0 main_~a~0)) (.cse0 (<= 1 main_~x~0)) (.cse1 (<= main_~y~0 2147483647)) (.cse2 (<= main_~x~0 2147483647)) (.cse5 (<= 1 main_~y~0)) (.cse3 (* main_~p~0 main_~s~0)) (.cse9 (+ (* main_~q~0 main_~r~0) 1))) (or (and .cse0 .cse1 .cse2 (forall ((main_~q~0 Int)) (= .cse3 (+ (* main_~q~0 main_~r~0) 1))) .cse4 (= main_~q~0 0) .cse5 (= main_~a~0 main_~x~0) .cse6) (not (= (select .cse7 0) 48)) (and (or (and (= main_~y~0 (+ main_~b~0 main_~x~0)) (<= main_~x~0 main_~y~0) (= (+ main_~q~0 1) 0) .cse6) (and (= (+ main_~r~0 1) 0) (< main_~y~0 main_~x~0) .cse4 .cse6)) .cse8 .cse0 (= main_~p~0 .cse9) .cse1 (= main_~s~0 1) .cse2 .cse5) (not (= |#NULL.offset| 0)) (not (= 2 (select |#length| 1))) (not (= (select |#valid| 3) 1)) (not (= (select |#length| 3) 12)) (not (= (select |#valid| 0) 0)) (not (= (select .cse7 1) 0)) (not (= (select |#valid| 1) 1)) (and .cse8 (= main_~b~0 (+ (* main_~q~0 main_~x~0) (* main_~y~0 main_~s~0))) .cse0 .cse1 (= main_~a~0 (+ (* main_~y~0 main_~r~0) (* main_~p~0 main_~x~0))) .cse2 .cse5 (= .cse3 .cse9)) (not (= |#NULL.base| 0)) (not (= 10 (select |#length| 2))) (not (= (select |#valid| 2) 1)) (<= |#StackHeapBarrier| 0))) [2023-04-02 22:33:04,917 INFO L895 garLoopResultBuilder]: At program point L41-2(lines 33 50) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (or (not (= (select .cse0 0) 48)) (not (= |#NULL.offset| 0)) (not (= 2 (select |#length| 1))) (not (= (select |#valid| 3) 1)) (not (= (select |#length| 3) 12)) (not (= (select |#valid| 0) 0)) (not (= (select .cse0 1) 0)) (not (= (select |#valid| 1) 1)) (not (= |#NULL.base| 0)) (not (= 10 (select |#length| 2))) (not (= (select |#valid| 2) 1)) (let ((.cse2 (* main_~y~0 main_~r~0)) (.cse3 (* main_~p~0 main_~x~0))) (let ((.cse1 (+ (* main_~q~0 main_~x~0) .cse2 .cse3 (* main_~y~0 main_~s~0)))) (and (<= 1 main_~x~0) (= .cse1 (+ main_~b~0 main_~a~0)) (not (= .cse1 0)) (<= main_~y~0 2147483647) (= main_~a~0 (+ .cse2 .cse3)) (<= main_~x~0 2147483647) (<= 0 .cse1) (<= 1 main_~y~0) (= (* main_~p~0 main_~s~0) (+ (* main_~q~0 main_~r~0) 1))))) (<= |#StackHeapBarrier| 0))) [2023-04-02 22:33:04,917 INFO L895 garLoopResultBuilder]: At program point L35(line 35) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (or (not (= (select .cse0 0) 48)) (not (= |#NULL.offset| 0)) (not (= 2 (select |#length| 1))) (not (= (select |#valid| 3) 1)) (not (= (select |#length| 3) 12)) (not (= (select |#valid| 0) 0)) (not (= (select .cse0 1) 0)) (not (= (select |#valid| 1) 1)) (not (= |#NULL.base| 0)) (not (= 10 (select |#length| 2))) (not (= (select |#valid| 2) 1)) (let ((.cse2 (* main_~y~0 main_~r~0)) (.cse3 (* main_~p~0 main_~x~0))) (let ((.cse1 (+ (* main_~q~0 main_~x~0) .cse2 .cse3 (* main_~y~0 main_~s~0)))) (and (<= 1 main_~x~0) (= .cse1 (+ main_~b~0 main_~a~0)) (not (= .cse1 0)) (<= main_~y~0 2147483647) (= main_~a~0 (+ .cse2 .cse3)) (<= main_~x~0 2147483647) (<= 0 .cse1) (<= 1 main_~y~0) (= (* main_~p~0 main_~s~0) (+ (* main_~q~0 main_~r~0) 1))))) (<= |#StackHeapBarrier| 0))) [2023-04-02 22:33:04,917 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(line -1) the Hoare annotation is: (and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|)) [2023-04-02 22:33:04,917 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2023-04-02 22:33:04,918 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-04-02 22:33:04,918 INFO L895 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (and (= (select |#length| 3) 12) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (= (select |#valid| 1) 1) (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= (select .cse0 0) 48) (= 10 (select |#length| 2)) (= (select .cse0 1) 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) [2023-04-02 22:33:04,918 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2023-04-02 22:33:04,918 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(line -1) the Hoare annotation is: true [2023-04-02 22:33:04,918 INFO L899 garLoopResultBuilder]: For program point L12(lines 12 13) no Hoare annotation was computed. [2023-04-02 22:33:04,918 INFO L899 garLoopResultBuilder]: For program point L11(lines 11 14) no Hoare annotation was computed. [2023-04-02 22:33:04,918 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 10 16) no Hoare annotation was computed. [2023-04-02 22:33:04,918 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 10 16) the Hoare annotation is: true [2023-04-02 22:33:04,918 INFO L899 garLoopResultBuilder]: For program point L11-2(lines 10 16) no Hoare annotation was computed. [2023-04-02 22:33:04,918 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2023-04-02 22:33:04,925 INFO L445 BasicCegarLoop]: Path program histogram: [5, 1, 1, 1, 1, 1] [2023-04-02 22:33:04,926 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-04-02 22:33:04,947 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.04 10:33:04 BoogieIcfgContainer [2023-04-02 22:33:04,947 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-04-02 22:33:04,950 INFO L158 Benchmark]: Toolchain (without parser) took 138780.34ms. Allocated memory was 198.2MB in the beginning and 531.6MB in the end (delta: 333.4MB). Free memory was 148.6MB in the beginning and 430.2MB in the end (delta: -281.7MB). Peak memory consumption was 301.7MB. Max. memory is 8.0GB. [2023-04-02 22:33:04,950 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 198.2MB. Free memory is still 144.1MB. There was no memory consumed. Max. memory is 8.0GB. [2023-04-02 22:33:04,950 INFO L158 Benchmark]: CACSL2BoogieTranslator took 149.80ms. Allocated memory is still 198.2MB. Free memory was 148.6MB in the beginning and 138.0MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-04-02 22:33:04,950 INFO L158 Benchmark]: Boogie Preprocessor took 26.25ms. Allocated memory is still 198.2MB. Free memory was 138.0MB in the beginning and 136.4MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-04-02 22:33:04,950 INFO L158 Benchmark]: RCFGBuilder took 246.31ms. Allocated memory is still 198.2MB. Free memory was 136.4MB in the beginning and 122.7MB in the end (delta: 13.7MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2023-04-02 22:33:04,951 INFO L158 Benchmark]: TraceAbstraction took 138353.36ms. Allocated memory was 198.2MB in the beginning and 531.6MB in the end (delta: 333.4MB). Free memory was 122.0MB in the beginning and 430.2MB in the end (delta: -308.2MB). Peak memory consumption was 275.5MB. Max. memory is 8.0GB. [2023-04-02 22:33:04,951 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 198.2MB. Free memory is still 144.1MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 149.80ms. Allocated memory is still 198.2MB. Free memory was 148.6MB in the beginning and 138.0MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 26.25ms. Allocated memory is still 198.2MB. Free memory was 138.0MB in the beginning and 136.4MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 246.31ms. Allocated memory is still 198.2MB. Free memory was 136.4MB in the beginning and 122.7MB in the end (delta: 13.7MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * TraceAbstraction took 138353.36ms. Allocated memory was 198.2MB in the beginning and 531.6MB in the end (delta: 333.4MB). Free memory was 122.0MB in the beginning and 430.2MB in the end (delta: -308.2MB). Peak memory consumption was 275.5MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 13]: 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, 31 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 138.3s, OverallIterations: 10, TraceHistogramMax: 11, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 18.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 91.7s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 5 mSolverCounterUnknown, 243 SdHoareTripleChecker+Valid, 14.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 211 mSDsluCounter, 691 SdHoareTripleChecker+Invalid, 14.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 499 mSDsCounter, 310 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1476 IncrementalHoareTripleChecker+Invalid, 1791 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 310 mSolverCounterUnsat, 192 mSDtfsCounter, 1476 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1117 GetRequests, 840 SyntacticMatches, 65 SemanticMatches, 212 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1886 ImplicationChecksByTransitivity, 17.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=70occurred in iteration=8, InterpolantAutomatonStates: 96, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 10 MinimizatonAttempts, 13 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 16 LocationsWithAnnotation, 50 PreInvPairs, 81 NumberOfFragments, 1474 HoareAnnotationTreeSize, 50 FomulaSimplifications, 2428 FormulaSimplificationTreeSizeReduction, 0.4s HoareSimplificationTime, 16 FomulaSimplificationsInter, 6862 FormulaSimplificationTreeSizeReductionInter, 91.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 3.5s SatisfiabilityAnalysisTime, 9.8s InterpolantComputationTime, 416 NumberOfCodeBlocks, 382 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 716 ConstructedInterpolants, 3 QuantifiedInterpolants, 4015 SizeOfPredicates, 64 NumberOfNonLiveVariables, 1172 ConjunctsInSsa, 268 ConjunctsInUnsatCore, 17 InterpolantComputations, 3 PerfectInterpolantSequences, 1108/1218 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: OVERALL_TIME: 0.4s, ICFG_INTERPRETER_ENTERED_PROCEDURES: 10, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 45, DAG_INTERPRETER_EARLY_EXITS: 2, TOOLS_POST_APPLICATIONS: 29, TOOLS_POST_TIME: 0.0s, TOOLS_POST_CALL_APPLICATIONS: 37, TOOLS_POST_CALL_TIME: 0.2s, TOOLS_POST_RETURN_APPLICATIONS: 22, TOOLS_POST_RETURN_TIME: 0.1s, TOOLS_QUANTIFIERELIM_APPLICATIONS: 88, TOOLS_QUANTIFIERELIM_TIME: 0.3s, TOOLS_QUANTIFIERELIM_MAX_TIME: 0.0s, FLUID_QUERY_TIME: 0.0s, FLUID_QUERIES: 126, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 37, DOMAIN_JOIN_TIME: 0.1s, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME: 0.0s, DOMAIN_WIDEN_APPLICATIONS: 0, DOMAIN_WIDEN_TIME: 0.0s, DOMAIN_ISSUBSETEQ_APPLICATIONS: 0, DOMAIN_ISSUBSETEQ_TIME: 0.0s, DOMAIN_ISBOTTOM_APPLICATIONS: 45, DOMAIN_ISBOTTOM_TIME: 0.0s, LOOP_SUMMARIZER_APPLICATIONS: 0, LOOP_SUMMARIZER_CACHE_MISSES: 0, LOOP_SUMMARIZER_OVERALL_TIME: 0.0s, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME: 0.0s, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 0, CALL_SUMMARIZER_APPLICATIONS: 22, CALL_SUMMARIZER_CACHE_MISSES: 6, CALL_SUMMARIZER_OVERALL_TIME: 0.0s, CALL_SUMMARIZER_NEW_COMPUTATION_TIME: 0.0s, PROCEDURE_GRAPH_BUILDER_TIME: 0.0s, PATH_EXPR_TIME: 0.0s, REGEX_TO_DAG_TIME: 0.0s, DAG_COMPRESSION_TIME: 0.0s, DAG_COMPRESSION_PROCESSED_NODES: 383, DAG_COMPRESSION_RETAINED_NODES: 142, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 33]: Loop Invariant Derived loop invariant: (((((((((((!(unknown-#memory_int-unknown[1][0] == 48) || !(#NULL == 0)) || !(2 == unknown-#length-unknown[1])) || !(\valid[3] == 1)) || !(unknown-#length-unknown[3] == 12)) || !(\valid[0] == 0)) || !(unknown-#memory_int-unknown[1][1] == 0)) || !(\valid[1] == 1)) || !(#NULL == 0)) || !(10 == unknown-#length-unknown[2])) || !(\valid[2] == 1)) || ((((((((1 <= x && q * x + y * r + p * x + y * s == b + a) && !(q * x + y * r + p * x + y * s == 0)) && y <= 2147483647) && a == y * r + p * x) && x <= 2147483647) && 0 <= q * x + y * r + p * x + y * s) && 1 <= y) && p * s == q * r + 1)) || unknown-#StackHeapBarrier-unknown <= 0 RESULT: Ultimate proved your program to be correct! [2023-04-02 22:33:04,985 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...