/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml --sifa.abstract.domain OctagonDomain -i ../sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_valuebound5.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-02 22:37:20,491 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-02 22:37:20,493 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-02 22:37:20,530 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-02 22:37:20,530 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-02 22:37:20,532 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-02 22:37:20,535 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-02 22:37:20,537 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-02 22:37:20,538 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-02 22:37:20,542 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-02 22:37:20,544 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-02 22:37:20,545 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-02 22:37:20,545 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-02 22:37:20,547 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-02 22:37:20,548 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-02 22:37:20,550 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-02 22:37:20,551 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-02 22:37:20,551 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-02 22:37:20,553 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-02 22:37:20,557 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-02 22:37:20,558 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-02 22:37:20,559 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-02 22:37:20,560 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-02 22:37:20,561 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-02 22:37:20,573 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-02 22:37:20,573 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-02 22:37:20,573 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-02 22:37:20,574 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-02 22:37:20,574 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-02 22:37:20,574 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-02 22:37:20,575 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-02 22:37:20,575 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-02 22:37:20,575 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-02 22:37:20,576 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-02 22:37:20,576 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-02 22:37:20,576 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-02 22:37:20,577 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-02 22:37:20,577 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-02 22:37:20,577 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-02 22:37:20,578 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-02 22:37:20,578 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-02 22:37:20,583 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 22:37:20,609 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-02 22:37:20,609 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-02 22:37:20,610 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-02 22:37:20,610 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-02 22:37:20,611 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-02 22:37:20,611 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-02 22:37:20,611 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-02 22:37:20,611 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-02 22:37:20,611 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-02 22:37:20,611 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-02 22:37:20,612 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-02 22:37:20,612 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-02 22:37:20,612 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-02 22:37:20,612 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-02 22:37:20,612 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-02 22:37:20,613 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-02 22:37:20,613 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-02 22:37:20,613 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-02 22:37:20,613 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-02 22:37:20,613 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-02 22:37:20,613 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-02 22:37:20,614 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-02 22:37:20,614 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-02 22:37:20,614 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-02 22:37:20,614 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-02 22:37:20,614 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-02 22:37:20,614 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-02 22:37:20,614 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-02 22:37:20,614 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-02 22:37:20,614 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-02 22:37:20,615 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-02 22:37:20,615 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-02 22:37:20,615 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 22:37:20,615 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-02 22:37:20,615 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-02 22:37:20,615 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-02 22:37:20,615 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-02 22:37:20,616 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-02 22:37:20,616 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-02 22:37:20,616 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-02 22:37:20,616 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-02 22:37:20,616 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> OctagonDomain [2023-04-02 22:37:20,819 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-02 22:37:20,842 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-02 22:37:20,844 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-02 22:37:20,845 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-02 22:37:20,846 INFO L275 PluginConnector]: CDTParser initialized [2023-04-02 22:37:20,847 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_valuebound5.c [2023-04-02 22:37:22,020 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-02 22:37:22,186 INFO L351 CDTParser]: Found 1 translation units. [2023-04-02 22:37:22,186 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_valuebound5.c [2023-04-02 22:37:22,190 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d8be33097/8d9dc44007904a3488c6c3eb6a098fca/FLAG323d6297a [2023-04-02 22:37:22,202 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d8be33097/8d9dc44007904a3488c6c3eb6a098fca [2023-04-02 22:37:22,205 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-02 22:37:22,206 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-02 22:37:22,207 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-02 22:37:22,209 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-02 22:37:22,211 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-02 22:37:22,212 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 10:37:22" (1/1) ... [2023-04-02 22:37:22,213 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@430dfff0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 10:37:22, skipping insertion in model container [2023-04-02 22:37:22,213 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 10:37:22" (1/1) ... [2023-04-02 22:37:22,218 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-02 22:37:22,229 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-02 22:37:22,333 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_valuebound5.c[588,601] [2023-04-02 22:37:22,369 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 22:37:22,376 INFO L203 MainTranslator]: Completed pre-run [2023-04-02 22:37:22,386 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_valuebound5.c[588,601] [2023-04-02 22:37:22,395 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 22:37:22,405 INFO L208 MainTranslator]: Completed translation [2023-04-02 22:37:22,406 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 10:37:22 WrapperNode [2023-04-02 22:37:22,406 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-02 22:37:22,407 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-02 22:37:22,407 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-02 22:37:22,407 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-02 22:37:22,415 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 10:37:22" (1/1) ... [2023-04-02 22:37:22,415 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 10:37:22" (1/1) ... [2023-04-02 22:37:22,420 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 10:37:22" (1/1) ... [2023-04-02 22:37:22,420 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 10:37:22" (1/1) ... [2023-04-02 22:37:22,424 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 10:37:22" (1/1) ... [2023-04-02 22:37:22,426 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 10:37:22" (1/1) ... [2023-04-02 22:37:22,427 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 10:37:22" (1/1) ... [2023-04-02 22:37:22,428 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 10:37:22" (1/1) ... [2023-04-02 22:37:22,429 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-02 22:37:22,430 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-02 22:37:22,430 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-02 22:37:22,430 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-02 22:37:22,431 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 10:37:22" (1/1) ... [2023-04-02 22:37:22,436 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 22:37:22,445 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 22:37:22,455 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 22:37:22,456 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 22:37:22,487 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-02 22:37:22,488 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-02 22:37:22,488 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-02 22:37:22,492 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-02 22:37:22,492 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-04-02 22:37:22,492 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-02 22:37:22,492 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-02 22:37:22,492 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-02 22:37:22,493 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-02 22:37:22,493 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-02 22:37:22,493 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ushort [2023-04-02 22:37:22,493 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-02 22:37:22,493 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-04-02 22:37:22,493 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-02 22:37:22,493 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-02 22:37:22,493 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-02 22:37:22,494 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-02 22:37:22,494 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-02 22:37:22,494 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-02 22:37:22,494 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-02 22:37:22,547 INFO L236 CfgBuilder]: Building ICFG [2023-04-02 22:37:22,549 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-02 22:37:22,675 INFO L277 CfgBuilder]: Performing block encoding [2023-04-02 22:37:22,693 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-02 22:37:22,694 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-04-02 22:37:22,696 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 10:37:22 BoogieIcfgContainer [2023-04-02 22:37:22,696 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-02 22:37:22,698 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-02 22:37:22,698 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-02 22:37:22,701 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-02 22:37:22,701 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.04 10:37:22" (1/3) ... [2023-04-02 22:37:22,701 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6565158c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 10:37:22, skipping insertion in model container [2023-04-02 22:37:22,701 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 10:37:22" (2/3) ... [2023-04-02 22:37:22,702 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6565158c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 10:37:22, skipping insertion in model container [2023-04-02 22:37:22,702 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 10:37:22" (3/3) ... [2023-04-02 22:37:22,703 INFO L112 eAbstractionObserver]: Analyzing ICFG cohencu-ll_valuebound5.c [2023-04-02 22:37:22,717 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-02 22:37:22,718 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-02 22:37:22,757 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-02 22:37:22,762 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;@65cd8448, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-02 22:37:22,762 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-02 22:37:22,782 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 13 states have internal predecessors, (16), 14 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-04-02 22:37:22,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-04-02 22:37:22,788 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 22:37:22,788 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 22:37:22,789 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 22:37:22,792 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 22:37:22,793 INFO L85 PathProgramCache]: Analyzing trace with hash -36751625, now seen corresponding path program 1 times [2023-04-02 22:37:22,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 22:37:22,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041175481] [2023-04-02 22:37:22,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 22:37:22,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 22:37:22,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 22:37:23,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 22:37:23,227 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 22:37:23,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041175481] [2023-04-02 22:37:23,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041175481] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 22:37:23,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 22:37:23,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 22:37:23,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842995881] [2023-04-02 22:37:23,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 22:37:23,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-02 22:37:23,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 22:37:23,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-02 22:37:23,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-02 22:37:23,261 INFO L87 Difference]: Start difference. First operand has 32 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 13 states have internal predecessors, (16), 14 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) 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, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-04-02 22:37:23,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 22:37:23,354 INFO L93 Difference]: Finished difference Result 59 states and 94 transitions. [2023-04-02 22:37:23,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-04-02 22:37:23,357 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, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 14 [2023-04-02 22:37:23,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 22:37:23,364 INFO L225 Difference]: With dead ends: 59 [2023-04-02 22:37:23,364 INFO L226 Difference]: Without dead ends: 32 [2023-04-02 22:37:23,367 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 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 22:37:23,370 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 8 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 22:37:23,370 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 86 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 22:37:23,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2023-04-02 22:37:23,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2023-04-02 22:37:23,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 14 states have internal predecessors, (15), 14 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-04-02 22:37:23,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 41 transitions. [2023-04-02 22:37:23,414 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 41 transitions. Word has length 14 [2023-04-02 22:37:23,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 22:37:23,414 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 41 transitions. [2023-04-02 22:37:23,414 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, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-04-02 22:37:23,415 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 41 transitions. [2023-04-02 22:37:23,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-04-02 22:37:23,416 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 22:37:23,416 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 22:37:23,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-02 22:37:23,416 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 22:37:23,417 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 22:37:23,417 INFO L85 PathProgramCache]: Analyzing trace with hash 726531578, now seen corresponding path program 1 times [2023-04-02 22:37:23,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 22:37:23,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050506511] [2023-04-02 22:37:23,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 22:37:23,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 22:37:23,432 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 22:37:23,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [110471824] [2023-04-02 22:37:23,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 22:37:23,433 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 22:37:23,433 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 22:37:23,436 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 22:37:23,466 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 22:37:23,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 22:37:23,513 INFO L262 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 17 conjunts are in the unsatisfiable core [2023-04-02 22:37:23,517 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 22:37:23,664 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 22:37:23,664 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 22:37:23,831 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 22:37:23,832 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 22:37:23,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050506511] [2023-04-02 22:37:23,833 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 22:37:23,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [110471824] [2023-04-02 22:37:23,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [110471824] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 22:37:23,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1650756965] [2023-04-02 22:37:23,867 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2023-04-02 22:37:23,867 INFO L166 IcfgInterpreter]: Building call graph [2023-04-02 22:37:23,871 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-02 22:37:23,876 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-02 22:37:23,876 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-02 22:37:23,995 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 9 for LOIs [2023-04-02 22:37:24,200 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 11 for LOIs [2023-04-02 22:37:24,209 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 38 for LOIs [2023-04-02 22:37:24,227 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2023-04-02 22:37:24,240 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-02 22:37:24,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1650756965] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 22:37:24,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-04-02 22:37:24,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [8, 7] total 22 [2023-04-02 22:37:24,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752391344] [2023-04-02 22:37:24,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 22:37:24,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-02 22:37:24,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 22:37:24,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-02 22:37:24,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=384, Unknown=0, NotChecked=0, Total=462 [2023-04-02 22:37:24,582 INFO L87 Difference]: Start difference. First operand 32 states and 41 transitions. Second operand has 12 states, 8 states have (on average 1.25) internal successors, (10), 6 states have internal predecessors, (10), 4 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-02 22:37:26,773 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-04-02 22:37:27,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 22:37:27,694 INFO L93 Difference]: Finished difference Result 63 states and 80 transitions. [2023-04-02 22:37:27,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-04-02 22:37:27,695 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 8 states have (on average 1.25) internal successors, (10), 6 states have internal predecessors, (10), 4 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 19 [2023-04-02 22:37:27,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 22:37:27,696 INFO L225 Difference]: With dead ends: 63 [2023-04-02 22:37:27,696 INFO L226 Difference]: Without dead ends: 47 [2023-04-02 22:37:27,697 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=155, Invalid=715, Unknown=0, NotChecked=0, Total=870 [2023-04-02 22:37:27,698 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 38 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 85 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-04-02 22:37:27,698 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 11 Invalid, 314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 228 Invalid, 1 Unknown, 0 Unchecked, 2.3s Time] [2023-04-02 22:37:27,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2023-04-02 22:37:27,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2023-04-02 22:37:27,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 21 states have (on average 1.0952380952380953) internal successors, (23), 22 states have internal predecessors, (23), 19 states have call successors, (19), 7 states have call predecessors, (19), 6 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-04-02 22:37:27,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 59 transitions. [2023-04-02 22:37:27,719 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 59 transitions. Word has length 19 [2023-04-02 22:37:27,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 22:37:27,719 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 59 transitions. [2023-04-02 22:37:27,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 8 states have (on average 1.25) internal successors, (10), 6 states have internal predecessors, (10), 4 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-02 22:37:27,720 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 59 transitions. [2023-04-02 22:37:27,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-04-02 22:37:27,721 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 22:37:27,721 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 22:37:27,727 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-04-02 22:37:27,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 22:37:27,927 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 22:37:27,928 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 22:37:27,928 INFO L85 PathProgramCache]: Analyzing trace with hash 1549398967, now seen corresponding path program 1 times [2023-04-02 22:37:27,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 22:37:27,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523455487] [2023-04-02 22:37:27,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 22:37:27,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 22:37:27,943 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 22:37:27,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [540375205] [2023-04-02 22:37:27,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 22:37:27,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 22:37:27,943 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 22:37:27,952 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 22:37:27,954 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 22:37:28,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 22:37:28,006 INFO L262 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 21 conjunts are in the unsatisfiable core [2023-04-02 22:37:28,010 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 22:37:28,098 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 11 proven. 19 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-04-02 22:37:28,098 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 22:37:28,220 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 13 proven. 17 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-04-02 22:37:28,221 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 22:37:28,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523455487] [2023-04-02 22:37:28,221 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 22:37:28,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [540375205] [2023-04-02 22:37:28,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [540375205] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 22:37:28,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1701497084] [2023-04-02 22:37:28,223 INFO L159 IcfgInterpreter]: Started Sifa with 22 locations of interest [2023-04-02 22:37:28,223 INFO L166 IcfgInterpreter]: Building call graph [2023-04-02 22:37:28,224 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-02 22:37:28,224 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-02 22:37:28,224 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-02 22:37:28,244 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 9 for LOIs [2023-04-02 22:37:30,160 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2023-04-02 22:37:30,163 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 38 for LOIs [2023-04-02 22:37:30,173 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2023-04-02 22:37:30,178 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-02 22:37:30,824 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '795#(and (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0))' at error location [2023-04-02 22:37:30,824 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-02 22:37:30,825 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-04-02 22:37:30,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2023-04-02 22:37:30,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100793306] [2023-04-02 22:37:30,825 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-04-02 22:37:30,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-04-02 22:37:30,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 22:37:30,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-04-02 22:37:30,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=516, Unknown=0, NotChecked=0, Total=600 [2023-04-02 22:37:30,827 INFO L87 Difference]: Start difference. First operand 47 states and 59 transitions. Second operand has 13 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 11 states have internal predecessors, (24), 6 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (14), 5 states have call predecessors, (14), 6 states have call successors, (14) [2023-04-02 22:37:31,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 22:37:31,261 INFO L93 Difference]: Finished difference Result 70 states and 91 transitions. [2023-04-02 22:37:31,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-04-02 22:37:31,261 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 11 states have internal predecessors, (24), 6 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (14), 5 states have call predecessors, (14), 6 states have call successors, (14) Word has length 46 [2023-04-02 22:37:31,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 22:37:31,263 INFO L225 Difference]: With dead ends: 70 [2023-04-02 22:37:31,263 INFO L226 Difference]: Without dead ends: 68 [2023-04-02 22:37:31,263 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 114 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=106, Invalid=650, Unknown=0, NotChecked=0, Total=756 [2023-04-02 22:37:31,264 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 19 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 287 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-02 22:37:31,264 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 100 Invalid, 341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 287 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-02 22:37:31,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2023-04-02 22:37:31,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 55. [2023-04-02 22:37:31,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 27 states have (on average 1.0740740740740742) internal successors, (29), 28 states have internal predecessors, (29), 19 states have call successors, (19), 9 states have call predecessors, (19), 8 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-04-02 22:37:31,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 65 transitions. [2023-04-02 22:37:31,286 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 65 transitions. Word has length 46 [2023-04-02 22:37:31,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 22:37:31,286 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 65 transitions. [2023-04-02 22:37:31,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 11 states have internal predecessors, (24), 6 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (14), 5 states have call predecessors, (14), 6 states have call successors, (14) [2023-04-02 22:37:31,287 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 65 transitions. [2023-04-02 22:37:31,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-04-02 22:37:31,288 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 22:37:31,288 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 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 22:37:31,293 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-04-02 22:37:31,493 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,SelfDestructingSolverStorable2 [2023-04-02 22:37:31,493 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 22:37:31,494 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 22:37:31,494 INFO L85 PathProgramCache]: Analyzing trace with hash 1775784186, now seen corresponding path program 2 times [2023-04-02 22:37:31,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 22:37:31,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343776385] [2023-04-02 22:37:31,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 22:37:31,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 22:37:31,505 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 22:37:31,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [154828150] [2023-04-02 22:37:31,505 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-04-02 22:37:31,505 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 22:37:31,506 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 22:37:31,507 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 22:37:31,509 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 22:37:31,551 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-04-02 22:37:31,551 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-02 22:37:31,552 INFO L262 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 20 conjunts are in the unsatisfiable core [2023-04-02 22:37:31,556 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 22:37:31,639 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 14 proven. 4 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-04-02 22:37:31,639 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 22:37:31,727 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 14 proven. 4 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-04-02 22:37:31,727 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 22:37:31,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343776385] [2023-04-02 22:37:31,728 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 22:37:31,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [154828150] [2023-04-02 22:37:31,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [154828150] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 22:37:31,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1431271906] [2023-04-02 22:37:31,732 INFO L159 IcfgInterpreter]: Started Sifa with 22 locations of interest [2023-04-02 22:37:31,732 INFO L166 IcfgInterpreter]: Building call graph [2023-04-02 22:37:31,733 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-02 22:37:31,733 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-02 22:37:31,733 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-02 22:37:31,746 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 9 for LOIs [2023-04-02 22:37:32,655 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2023-04-02 22:37:32,658 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 38 for LOIs [2023-04-02 22:37:32,665 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2023-04-02 22:37:32,668 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-02 22:37:33,098 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1324#(and (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0))' at error location [2023-04-02 22:37:33,098 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-02 22:37:33,098 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-04-02 22:37:33,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-04-02 22:37:33,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804862351] [2023-04-02 22:37:33,098 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-04-02 22:37:33,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-02 22:37:33,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 22:37:33,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-02 22:37:33,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=435, Unknown=0, NotChecked=0, Total=506 [2023-04-02 22:37:33,100 INFO L87 Difference]: Start difference. First operand 55 states and 65 transitions. Second operand has 10 states, 10 states have (on average 1.9) internal successors, (19), 8 states have internal predecessors, (19), 5 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (16), 5 states have call predecessors, (16), 5 states have call successors, (16) [2023-04-02 22:37:33,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 22:37:33,347 INFO L93 Difference]: Finished difference Result 91 states and 121 transitions. [2023-04-02 22:37:33,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-04-02 22:37:33,347 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.9) internal successors, (19), 8 states have internal predecessors, (19), 5 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (16), 5 states have call predecessors, (16), 5 states have call successors, (16) Word has length 51 [2023-04-02 22:37:33,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 22:37:33,349 INFO L225 Difference]: With dead ends: 91 [2023-04-02 22:37:33,349 INFO L226 Difference]: Without dead ends: 89 [2023-04-02 22:37:33,349 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=84, Invalid=516, Unknown=0, NotChecked=0, Total=600 [2023-04-02 22:37:33,350 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 14 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-02 22:37:33,350 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 111 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-02 22:37:33,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2023-04-02 22:37:33,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 78. [2023-04-02 22:37:33,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 36 states have (on average 1.0833333333333333) internal successors, (39), 39 states have internal predecessors, (39), 31 states have call successors, (31), 11 states have call predecessors, (31), 10 states have return successors, (29), 27 states have call predecessors, (29), 29 states have call successors, (29) [2023-04-02 22:37:33,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 99 transitions. [2023-04-02 22:37:33,381 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 99 transitions. Word has length 51 [2023-04-02 22:37:33,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 22:37:33,382 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 99 transitions. [2023-04-02 22:37:33,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.9) internal successors, (19), 8 states have internal predecessors, (19), 5 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (16), 5 states have call predecessors, (16), 5 states have call successors, (16) [2023-04-02 22:37:33,382 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 99 transitions. [2023-04-02 22:37:33,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-04-02 22:37:33,383 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 22:37:33,383 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 22:37:33,389 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-04-02 22:37:33,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 22:37:33,589 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 22:37:33,589 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 22:37:33,590 INFO L85 PathProgramCache]: Analyzing trace with hash 1077796183, now seen corresponding path program 3 times [2023-04-02 22:37:33,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 22:37:33,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116131698] [2023-04-02 22:37:33,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 22:37:33,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 22:37:33,601 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 22:37:33,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1736275624] [2023-04-02 22:37:33,601 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-04-02 22:37:33,601 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 22:37:33,601 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 22:37:33,606 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 22:37:33,607 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 22:37:33,663 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-04-02 22:37:33,663 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-02 22:37:33,664 INFO L262 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 27 conjunts are in the unsatisfiable core [2023-04-02 22:37:33,666 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 22:37:33,766 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 16 proven. 5 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-04-02 22:37:33,767 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 22:37:33,987 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 16 proven. 5 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-04-02 22:37:33,987 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 22:37:33,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116131698] [2023-04-02 22:37:33,987 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 22:37:33,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1736275624] [2023-04-02 22:37:33,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1736275624] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 22:37:33,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1258072960] [2023-04-02 22:37:33,990 INFO L159 IcfgInterpreter]: Started Sifa with 22 locations of interest [2023-04-02 22:37:33,990 INFO L166 IcfgInterpreter]: Building call graph [2023-04-02 22:37:33,990 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-02 22:37:33,990 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-02 22:37:33,991 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-02 22:37:34,004 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 9 for LOIs [2023-04-02 22:37:35,114 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2023-04-02 22:37:35,116 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 38 for LOIs [2023-04-02 22:37:35,123 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2023-04-02 22:37:35,126 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-02 22:37:37,629 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1956#(and (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0))' at error location [2023-04-02 22:37:37,629 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-02 22:37:37,629 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-04-02 22:37:37,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 11 [2023-04-02 22:37:37,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760201022] [2023-04-02 22:37:37,629 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-04-02 22:37:37,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-02 22:37:37,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 22:37:37,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-02 22:37:37,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=476, Unknown=1, NotChecked=0, Total=552 [2023-04-02 22:37:37,631 INFO L87 Difference]: Start difference. First operand 78 states and 99 transitions. Second operand has 11 states, 10 states have (on average 2.0) internal successors, (20), 9 states have internal predecessors, (20), 5 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (19), 5 states have call predecessors, (19), 5 states have call successors, (19) [2023-04-02 22:37:37,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 22:37:37,885 INFO L93 Difference]: Finished difference Result 94 states and 113 transitions. [2023-04-02 22:37:37,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-04-02 22:37:37,885 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.0) internal successors, (20), 9 states have internal predecessors, (20), 5 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (19), 5 states have call predecessors, (19), 5 states have call successors, (19) Word has length 56 [2023-04-02 22:37:37,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 22:37:37,887 INFO L225 Difference]: With dead ends: 94 [2023-04-02 22:37:37,887 INFO L226 Difference]: Without dead ends: 82 [2023-04-02 22:37:37,888 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=89, Invalid=560, Unknown=1, NotChecked=0, Total=650 [2023-04-02 22:37:37,889 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 11 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-02 22:37:37,889 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 137 Invalid, 265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-02 22:37:37,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2023-04-02 22:37:37,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 79. [2023-04-02 22:37:37,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 42 states have (on average 1.0714285714285714) internal successors, (45), 44 states have internal predecessors, (45), 24 states have call successors, (24), 13 states have call predecessors, (24), 12 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2023-04-02 22:37:37,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 91 transitions. [2023-04-02 22:37:37,936 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 91 transitions. Word has length 56 [2023-04-02 22:37:37,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 22:37:37,936 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 91 transitions. [2023-04-02 22:37:37,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.0) internal successors, (20), 9 states have internal predecessors, (20), 5 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (19), 5 states have call predecessors, (19), 5 states have call successors, (19) [2023-04-02 22:37:37,936 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 91 transitions. [2023-04-02 22:37:37,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-04-02 22:37:37,944 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 22:37:37,944 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 11, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 22:37:37,952 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-04-02 22:37:38,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 22:37:38,150 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 22:37:38,150 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 22:37:38,150 INFO L85 PathProgramCache]: Analyzing trace with hash -72955691, now seen corresponding path program 1 times [2023-04-02 22:37:38,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 22:37:38,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436746120] [2023-04-02 22:37:38,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 22:37:38,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 22:37:38,161 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 22:37:38,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [473739125] [2023-04-02 22:37:38,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 22:37:38,161 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 22:37:38,164 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 22:37:38,165 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 22:37:38,167 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 22:37:38,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 22:37:38,213 INFO L262 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 26 conjunts are in the unsatisfiable core [2023-04-02 22:37:38,215 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 22:37:38,437 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 22 proven. 7 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2023-04-02 22:37:38,437 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 22:37:38,631 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 22 proven. 7 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2023-04-02 22:37:38,631 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 22:37:38,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436746120] [2023-04-02 22:37:38,631 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 22:37:38,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [473739125] [2023-04-02 22:37:38,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [473739125] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 22:37:38,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1780082916] [2023-04-02 22:37:38,633 INFO L159 IcfgInterpreter]: Started Sifa with 24 locations of interest [2023-04-02 22:37:38,633 INFO L166 IcfgInterpreter]: Building call graph [2023-04-02 22:37:38,634 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-02 22:37:38,634 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-02 22:37:38,634 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-02 22:37:38,647 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 9 for LOIs [2023-04-02 22:37:39,457 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2023-04-02 22:37:39,459 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 38 for LOIs [2023-04-02 22:37:39,465 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2023-04-02 22:37:39,469 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-02 22:37:40,003 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2681#(and (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0))' at error location [2023-04-02 22:37:40,003 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-02 22:37:40,003 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-04-02 22:37:40,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 14 [2023-04-02 22:37:40,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676459789] [2023-04-02 22:37:40,003 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-04-02 22:37:40,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-04-02 22:37:40,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 22:37:40,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-04-02 22:37:40,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=657, Unknown=0, NotChecked=0, Total=756 [2023-04-02 22:37:40,005 INFO L87 Difference]: Start difference. First operand 79 states and 91 transitions. Second operand has 14 states, 11 states have (on average 2.0) internal successors, (22), 11 states have internal predecessors, (22), 7 states have call successors, (27), 3 states have call predecessors, (27), 2 states have return successors, (25), 8 states have call predecessors, (25), 7 states have call successors, (25) [2023-04-02 22:37:40,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 22:37:40,460 INFO L93 Difference]: Finished difference Result 98 states and 115 transitions. [2023-04-02 22:37:40,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-04-02 22:37:40,461 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 11 states have (on average 2.0) internal successors, (22), 11 states have internal predecessors, (22), 7 states have call successors, (27), 3 states have call predecessors, (27), 2 states have return successors, (25), 8 states have call predecessors, (25), 7 states have call successors, (25) Word has length 72 [2023-04-02 22:37:40,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 22:37:40,462 INFO L225 Difference]: With dead ends: 98 [2023-04-02 22:37:40,462 INFO L226 Difference]: Without dead ends: 96 [2023-04-02 22:37:40,463 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 188 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=149, Invalid=973, Unknown=0, NotChecked=0, Total=1122 [2023-04-02 22:37:40,463 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 18 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-02 22:37:40,463 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 120 Invalid, 292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-02 22:37:40,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2023-04-02 22:37:40,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 92. [2023-04-02 22:37:40,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 49 states have (on average 1.0816326530612246) internal successors, (53), 51 states have internal predecessors, (53), 28 states have call successors, (28), 15 states have call predecessors, (28), 14 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) [2023-04-02 22:37:40,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 107 transitions. [2023-04-02 22:37:40,493 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 107 transitions. Word has length 72 [2023-04-02 22:37:40,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 22:37:40,493 INFO L495 AbstractCegarLoop]: Abstraction has 92 states and 107 transitions. [2023-04-02 22:37:40,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 11 states have (on average 2.0) internal successors, (22), 11 states have internal predecessors, (22), 7 states have call successors, (27), 3 states have call predecessors, (27), 2 states have return successors, (25), 8 states have call predecessors, (25), 7 states have call successors, (25) [2023-04-02 22:37:40,494 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 107 transitions. [2023-04-02 22:37:40,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-04-02 22:37:40,494 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 22:37:40,496 INFO L195 NwaCegarLoop]: trace histogram [13, 12, 12, 2, 2, 2, 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, 1] [2023-04-02 22:37:40,509 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-04-02 22:37:40,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 22:37:40,709 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 22:37:40,709 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 22:37:40,710 INFO L85 PathProgramCache]: Analyzing trace with hash 638285148, now seen corresponding path program 1 times [2023-04-02 22:37:40,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 22:37:40,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628777596] [2023-04-02 22:37:40,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 22:37:40,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 22:37:40,717 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 22:37:40,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [889781809] [2023-04-02 22:37:40,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 22:37:40,717 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 22:37:40,718 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 22:37:40,719 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 22:37:40,721 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 22:37:40,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 22:37:40,770 INFO L262 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 22 conjunts are in the unsatisfiable core [2023-04-02 22:37:40,772 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 22:37:40,947 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 24 proven. 7 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-04-02 22:37:40,947 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 22:37:41,109 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 22:37:41,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628777596] [2023-04-02 22:37:41,110 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 22:37:41,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [889781809] [2023-04-02 22:37:41,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [889781809] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 22:37:41,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [363721243] [2023-04-02 22:37:41,112 INFO L159 IcfgInterpreter]: Started Sifa with 25 locations of interest [2023-04-02 22:37:41,112 INFO L166 IcfgInterpreter]: Building call graph [2023-04-02 22:37:41,112 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-02 22:37:41,112 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-02 22:37:41,112 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-02 22:37:41,124 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 9 for LOIs [2023-04-02 22:37:42,073 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2023-04-02 22:37:42,076 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 38 for LOIs [2023-04-02 22:37:42,082 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2023-04-02 22:37:42,085 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-02 22:37:44,596 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3366#(and (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0))' at error location [2023-04-02 22:37:44,597 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-02 22:37:44,597 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-04-02 22:37:44,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2023-04-02 22:37:44,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883550469] [2023-04-02 22:37:44,597 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-04-02 22:37:44,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-02 22:37:44,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 22:37:44,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-02 22:37:44,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=657, Unknown=1, NotChecked=0, Total=756 [2023-04-02 22:37:44,599 INFO L87 Difference]: Start difference. First operand 92 states and 107 transitions. Second operand has 9 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 4 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 5 states have call predecessors, (14), 4 states have call successors, (14) [2023-04-02 22:37:44,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 22:37:44,773 INFO L93 Difference]: Finished difference Result 101 states and 117 transitions. [2023-04-02 22:37:44,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-04-02 22:37:44,773 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 4 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 5 states have call predecessors, (14), 4 states have call successors, (14) Word has length 77 [2023-04-02 22:37:44,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 22:37:44,774 INFO L225 Difference]: With dead ends: 101 [2023-04-02 22:37:44,774 INFO L226 Difference]: Without dead ends: 92 [2023-04-02 22:37:44,775 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 168 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=121, Invalid=808, Unknown=1, NotChecked=0, Total=930 [2023-04-02 22:37:44,775 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 10 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 22:37:44,776 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 90 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 22:37:44,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2023-04-02 22:37:44,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2023-04-02 22:37:44,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 49 states have (on average 1.0612244897959184) internal successors, (52), 51 states have internal predecessors, (52), 28 states have call successors, (28), 15 states have call predecessors, (28), 14 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) [2023-04-02 22:37:44,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 106 transitions. [2023-04-02 22:37:44,802 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 106 transitions. Word has length 77 [2023-04-02 22:37:44,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 22:37:44,803 INFO L495 AbstractCegarLoop]: Abstraction has 92 states and 106 transitions. [2023-04-02 22:37:44,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 4 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 5 states have call predecessors, (14), 4 states have call successors, (14) [2023-04-02 22:37:44,803 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 106 transitions. [2023-04-02 22:37:44,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-04-02 22:37:44,804 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 22:37:44,804 INFO L195 NwaCegarLoop]: trace histogram [18, 17, 17, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 22:37:44,812 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-04-02 22:37:45,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 22:37:45,009 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 22:37:45,010 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 22:37:45,010 INFO L85 PathProgramCache]: Analyzing trace with hash 914576601, now seen corresponding path program 2 times [2023-04-02 22:37:45,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 22:37:45,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988308698] [2023-04-02 22:37:45,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 22:37:45,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 22:37:45,017 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 22:37:45,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [237197796] [2023-04-02 22:37:45,017 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-04-02 22:37:45,017 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 22:37:45,017 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 22:37:45,018 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 22:37:45,022 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 22:37:45,068 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-04-02 22:37:45,068 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-02 22:37:45,069 INFO L262 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 41 conjunts are in the unsatisfiable core [2023-04-02 22:37:45,071 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 22:37:45,299 INFO L134 CoverageAnalysis]: Checked inductivity of 599 backedges. 107 proven. 38 refuted. 0 times theorem prover too weak. 454 trivial. 0 not checked. [2023-04-02 22:37:45,299 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 22:37:45,791 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 22:37:45,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988308698] [2023-04-02 22:37:45,792 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 22:37:45,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [237197796] [2023-04-02 22:37:45,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [237197796] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 22:37:45,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1087539096] [2023-04-02 22:37:45,794 INFO L159 IcfgInterpreter]: Started Sifa with 25 locations of interest [2023-04-02 22:37:45,794 INFO L166 IcfgInterpreter]: Building call graph [2023-04-02 22:37:45,794 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-02 22:37:45,794 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-02 22:37:45,794 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-02 22:37:45,806 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 9 for LOIs [2023-04-02 22:37:46,752 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2023-04-02 22:37:46,755 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 38 for LOIs [2023-04-02 22:37:46,762 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2023-04-02 22:37:46,765 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-02 22:37:47,401 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4132#(and (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0))' at error location [2023-04-02 22:37:47,402 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-02 22:37:47,402 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-04-02 22:37:47,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2023-04-02 22:37:47,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406320513] [2023-04-02 22:37:47,402 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-04-02 22:37:47,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-02 22:37:47,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 22:37:47,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-02 22:37:47,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=759, Unknown=0, NotChecked=0, Total=870 [2023-04-02 22:37:47,404 INFO L87 Difference]: Start difference. First operand 92 states and 106 transitions. Second operand has 11 states, 10 states have (on average 1.9) internal successors, (19), 9 states have internal predecessors, (19), 6 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 5 states have call predecessors, (19), 5 states have call successors, (19) [2023-04-02 22:37:47,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 22:37:47,700 INFO L93 Difference]: Finished difference Result 115 states and 124 transitions. [2023-04-02 22:37:47,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-04-02 22:37:47,701 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 1.9) internal successors, (19), 9 states have internal predecessors, (19), 6 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 5 states have call predecessors, (19), 5 states have call successors, (19) Word has length 104 [2023-04-02 22:37:47,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 22:37:47,702 INFO L225 Difference]: With dead ends: 115 [2023-04-02 22:37:47,702 INFO L226 Difference]: Without dead ends: 102 [2023-04-02 22:37:47,703 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 220 SyntacticMatches, 3 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=129, Invalid=863, Unknown=0, NotChecked=0, Total=992 [2023-04-02 22:37:47,703 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 13 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 313 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-02 22:37:47,704 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 99 Invalid, 352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 313 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-02 22:37:47,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2023-04-02 22:37:47,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2023-04-02 22:37:47,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 58 states have (on average 1.0344827586206897) internal successors, (60), 59 states have internal predecessors, (60), 26 states have call successors, (26), 18 states have call predecessors, (26), 17 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-04-02 22:37:47,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 110 transitions. [2023-04-02 22:37:47,729 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 110 transitions. Word has length 104 [2023-04-02 22:37:47,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 22:37:47,729 INFO L495 AbstractCegarLoop]: Abstraction has 102 states and 110 transitions. [2023-04-02 22:37:47,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 1.9) internal successors, (19), 9 states have internal predecessors, (19), 6 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 5 states have call predecessors, (19), 5 states have call successors, (19) [2023-04-02 22:37:47,729 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 110 transitions. [2023-04-02 22:37:47,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-04-02 22:37:47,730 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 22:37:47,730 INFO L195 NwaCegarLoop]: trace histogram [18, 17, 17, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 22:37:47,737 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 22:37:47,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 22:37:47,934 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 22:37:47,935 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 22:37:47,935 INFO L85 PathProgramCache]: Analyzing trace with hash 211428058, now seen corresponding path program 4 times [2023-04-02 22:37:47,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 22:37:47,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269077504] [2023-04-02 22:37:47,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 22:37:47,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 22:37:47,943 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 22:37:47,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [176288533] [2023-04-02 22:37:47,943 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-04-02 22:37:47,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 22:37:47,943 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 22:37:47,944 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 22:37:47,954 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 22:37:48,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 22:37:48,023 INFO L262 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 42 conjunts are in the unsatisfiable core [2023-04-02 22:37:48,026 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 22:37:48,302 INFO L134 CoverageAnalysis]: Checked inductivity of 611 backedges. 77 proven. 80 refuted. 0 times theorem prover too weak. 454 trivial. 0 not checked. [2023-04-02 22:37:48,302 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 22:37:48,806 INFO L134 CoverageAnalysis]: Checked inductivity of 611 backedges. 79 proven. 78 refuted. 0 times theorem prover too weak. 454 trivial. 0 not checked. [2023-04-02 22:37:48,807 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 22:37:48,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269077504] [2023-04-02 22:37:48,807 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 22:37:48,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [176288533] [2023-04-02 22:37:48,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [176288533] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 22:37:48,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [661607065] [2023-04-02 22:37:48,808 INFO L159 IcfgInterpreter]: Started Sifa with 22 locations of interest [2023-04-02 22:37:48,808 INFO L166 IcfgInterpreter]: Building call graph [2023-04-02 22:37:48,809 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-02 22:37:48,809 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-02 22:37:48,809 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-02 22:37:48,823 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 9 for LOIs [2023-04-02 22:37:49,707 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2023-04-02 22:37:49,710 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 38 for LOIs [2023-04-02 22:37:49,716 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2023-04-02 22:37:49,719 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-02 22:37:50,226 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5114#(and (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0))' at error location [2023-04-02 22:37:50,226 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-02 22:37:50,227 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-04-02 22:37:50,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2023-04-02 22:37:50,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735799579] [2023-04-02 22:37:50,227 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-04-02 22:37:50,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-04-02 22:37:50,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 22:37:50,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-04-02 22:37:50,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=816, Unknown=0, NotChecked=0, Total=930 [2023-04-02 22:37:50,229 INFO L87 Difference]: Start difference. First operand 102 states and 110 transitions. Second operand has 19 states, 17 states have (on average 1.8823529411764706) internal successors, (32), 15 states have internal predecessors, (32), 12 states have call successors, (39), 3 states have call predecessors, (39), 2 states have return successors, (36), 11 states have call predecessors, (36), 10 states have call successors, (36) [2023-04-02 22:37:50,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 22:37:50,998 INFO L93 Difference]: Finished difference Result 118 states and 133 transitions. [2023-04-02 22:37:50,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-04-02 22:37:50,998 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 1.8823529411764706) internal successors, (32), 15 states have internal predecessors, (32), 12 states have call successors, (39), 3 states have call predecessors, (39), 2 states have return successors, (36), 11 states have call predecessors, (36), 10 states have call successors, (36) Word has length 105 [2023-04-02 22:37:50,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 22:37:50,999 INFO L225 Difference]: With dead ends: 118 [2023-04-02 22:37:51,000 INFO L226 Difference]: Without dead ends: 116 [2023-04-02 22:37:51,000 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 285 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 248 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=180, Invalid=1152, Unknown=0, NotChecked=0, Total=1332 [2023-04-02 22:37:51,001 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 25 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 477 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 526 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 477 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-02 22:37:51,001 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 131 Invalid, 526 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 477 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-02 22:37:51,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2023-04-02 22:37:51,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 106. [2023-04-02 22:37:51,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 61 states have (on average 1.0327868852459017) internal successors, (63), 62 states have internal predecessors, (63), 26 states have call successors, (26), 19 states have call predecessors, (26), 18 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-04-02 22:37:51,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 113 transitions. [2023-04-02 22:37:51,037 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 113 transitions. Word has length 105 [2023-04-02 22:37:51,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 22:37:51,037 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 113 transitions. [2023-04-02 22:37:51,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 1.8823529411764706) internal successors, (32), 15 states have internal predecessors, (32), 12 states have call successors, (39), 3 states have call predecessors, (39), 2 states have return successors, (36), 11 states have call predecessors, (36), 10 states have call successors, (36) [2023-04-02 22:37:51,038 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 113 transitions. [2023-04-02 22:37:51,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-04-02 22:37:51,039 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 22:37:51,039 INFO L195 NwaCegarLoop]: trace histogram [22, 21, 21, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 22:37:51,045 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-04-02 22:37:51,244 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,SelfDestructingSolverStorable8 [2023-04-02 22:37:51,244 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 22:37:51,245 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 22:37:51,245 INFO L85 PathProgramCache]: Analyzing trace with hash 769975029, now seen corresponding path program 2 times [2023-04-02 22:37:51,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 22:37:51,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046961164] [2023-04-02 22:37:51,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 22:37:51,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 22:37:51,253 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 22:37:51,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [881340341] [2023-04-02 22:37:51,253 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-04-02 22:37:51,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 22:37:51,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 22:37:51,255 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 22:37:51,257 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 22:37:51,324 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-04-02 22:37:51,325 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-02 22:37:51,326 INFO L262 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 26 conjunts are in the unsatisfiable core [2023-04-02 22:37:51,335 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 22:37:51,587 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 107 proven. 16 refuted. 0 times theorem prover too weak. 801 trivial. 0 not checked. [2023-04-02 22:37:51,587 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 22:37:51,624 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 22:37:51,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046961164] [2023-04-02 22:37:51,625 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 22:37:51,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [881340341] [2023-04-02 22:37:51,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [881340341] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 22:37:51,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [941546400] [2023-04-02 22:37:51,626 INFO L159 IcfgInterpreter]: Started Sifa with 24 locations of interest [2023-04-02 22:37:51,626 INFO L166 IcfgInterpreter]: Building call graph [2023-04-02 22:37:51,627 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-02 22:37:51,627 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-02 22:37:51,627 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-02 22:37:51,638 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 9 for LOIs [2023-04-02 22:37:52,612 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2023-04-02 22:37:52,615 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 38 for LOIs [2023-04-02 22:37:52,621 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2023-04-02 22:37:52,623 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-02 22:37:53,243 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5874#(and (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0))' at error location [2023-04-02 22:37:53,244 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-02 22:37:53,244 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-04-02 22:37:53,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2023-04-02 22:37:53,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603449119] [2023-04-02 22:37:53,244 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-04-02 22:37:53,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-02 22:37:53,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 22:37:53,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-02 22:37:53,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=599, Unknown=0, NotChecked=0, Total=702 [2023-04-02 22:37:53,245 INFO L87 Difference]: Start difference. First operand 106 states and 113 transitions. Second operand has 12 states, 9 states have (on average 2.0) internal successors, (18), 10 states have internal predecessors, (18), 6 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 6 states have call successors, (13) [2023-04-02 22:37:53,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 22:37:53,436 INFO L93 Difference]: Finished difference Result 112 states and 118 transitions. [2023-04-02 22:37:53,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-04-02 22:37:53,436 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 2.0) internal successors, (18), 10 states have internal predecessors, (18), 6 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 6 states have call successors, (13) Word has length 126 [2023-04-02 22:37:53,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 22:37:53,437 INFO L225 Difference]: With dead ends: 112 [2023-04-02 22:37:53,437 INFO L226 Difference]: Without dead ends: 108 [2023-04-02 22:37:53,438 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 230 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=119, Invalid=693, Unknown=0, NotChecked=0, Total=812 [2023-04-02 22:37:53,438 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 15 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 22:37:53,439 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 58 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 22:37:53,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2023-04-02 22:37:53,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2023-04-02 22:37:53,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 63 states have (on average 1.0158730158730158) internal successors, (64), 63 states have internal predecessors, (64), 26 states have call successors, (26), 20 states have call predecessors, (26), 18 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-04-02 22:37:53,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 114 transitions. [2023-04-02 22:37:53,468 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 114 transitions. Word has length 126 [2023-04-02 22:37:53,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 22:37:53,468 INFO L495 AbstractCegarLoop]: Abstraction has 108 states and 114 transitions. [2023-04-02 22:37:53,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 2.0) internal successors, (18), 10 states have internal predecessors, (18), 6 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 6 states have call successors, (13) [2023-04-02 22:37:53,468 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 114 transitions. [2023-04-02 22:37:53,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-04-02 22:37:53,469 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 22:37:53,470 INFO L195 NwaCegarLoop]: trace histogram [23, 22, 22, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 22:37:53,477 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 22:37:53,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-04-02 22:37:53,672 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 22:37:53,672 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 22:37:53,672 INFO L85 PathProgramCache]: Analyzing trace with hash 1059630908, now seen corresponding path program 3 times [2023-04-02 22:37:53,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 22:37:53,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314188925] [2023-04-02 22:37:53,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 22:37:53,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 22:37:53,681 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 22:37:53,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1359876324] [2023-04-02 22:37:53,681 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-04-02 22:37:53,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 22:37:53,681 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 22:37:53,682 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 22:37:53,683 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 22:37:53,732 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-04-02 22:37:53,733 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-02 22:37:53,733 INFO L262 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 36 conjunts are in the unsatisfiable core [2023-04-02 22:37:53,736 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 22:37:53,950 INFO L134 CoverageAnalysis]: Checked inductivity of 1010 backedges. 43 proven. 106 refuted. 0 times theorem prover too weak. 861 trivial. 0 not checked. [2023-04-02 22:37:53,950 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 22:37:54,100 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 22:37:54,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314188925] [2023-04-02 22:37:54,101 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 22:37:54,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1359876324] [2023-04-02 22:37:54,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1359876324] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 22:37:54,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1311390565] [2023-04-02 22:37:54,103 INFO L159 IcfgInterpreter]: Started Sifa with 25 locations of interest [2023-04-02 22:37:54,103 INFO L166 IcfgInterpreter]: Building call graph [2023-04-02 22:37:54,103 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-02 22:37:54,103 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-02 22:37:54,103 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-02 22:37:54,114 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 9 for LOIs [2023-04-02 22:37:54,731 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2023-04-02 22:37:54,733 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 38 for LOIs [2023-04-02 22:37:54,737 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2023-04-02 22:37:54,740 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-02 22:37:55,266 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '6746#(and (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0))' at error location [2023-04-02 22:37:55,266 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-02 22:37:55,266 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-04-02 22:37:55,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2023-04-02 22:37:55,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846572837] [2023-04-02 22:37:55,266 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-04-02 22:37:55,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-02 22:37:55,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 22:37:55,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-02 22:37:55,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=665, Unknown=0, NotChecked=0, Total=756 [2023-04-02 22:37:55,267 INFO L87 Difference]: Start difference. First operand 108 states and 114 transitions. Second operand has 11 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 6 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (24), 6 states have call predecessors, (24), 6 states have call successors, (24) [2023-04-02 22:37:55,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 22:37:55,623 INFO L93 Difference]: Finished difference Result 130 states and 141 transitions. [2023-04-02 22:37:55,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-04-02 22:37:55,623 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 6 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (24), 6 states have call predecessors, (24), 6 states have call successors, (24) Word has length 131 [2023-04-02 22:37:55,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 22:37:55,624 INFO L225 Difference]: With dead ends: 130 [2023-04-02 22:37:55,624 INFO L226 Difference]: Without dead ends: 119 [2023-04-02 22:37:55,625 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 307 GetRequests, 276 SyntacticMatches, 3 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=105, Invalid=765, Unknown=0, NotChecked=0, Total=870 [2023-04-02 22:37:55,625 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 13 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 448 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-02 22:37:55,625 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 122 Invalid, 472 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 448 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-02 22:37:55,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2023-04-02 22:37:55,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2023-04-02 22:37:55,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 68 states have (on average 1.0147058823529411) internal successors, (69), 68 states have internal predecessors, (69), 31 states have call successors, (31), 21 states have call predecessors, (31), 19 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2023-04-02 22:37:55,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 129 transitions. [2023-04-02 22:37:55,658 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 129 transitions. Word has length 131 [2023-04-02 22:37:55,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 22:37:55,658 INFO L495 AbstractCegarLoop]: Abstraction has 119 states and 129 transitions. [2023-04-02 22:37:55,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 6 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (24), 6 states have call predecessors, (24), 6 states have call successors, (24) [2023-04-02 22:37:55,659 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 129 transitions. [2023-04-02 22:37:55,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2023-04-02 22:37:55,659 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 22:37:55,660 INFO L195 NwaCegarLoop]: trace histogram [28, 27, 27, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 22:37:55,664 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 22:37:55,860 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,SelfDestructingSolverStorable10 [2023-04-02 22:37:55,861 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 22:37:55,861 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 22:37:55,861 INFO L85 PathProgramCache]: Analyzing trace with hash -1798246663, now seen corresponding path program 4 times [2023-04-02 22:37:55,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 22:37:55,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039940716] [2023-04-02 22:37:55,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 22:37:55,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 22:37:55,874 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 22:37:55,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1228241697] [2023-04-02 22:37:55,874 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-04-02 22:37:55,874 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 22:37:55,874 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 22:37:55,875 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 22:37:55,878 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-04-02 22:37:55,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 22:37:55,947 INFO L262 TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 43 conjunts are in the unsatisfiable core [2023-04-02 22:37:55,950 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 22:37:56,200 INFO L134 CoverageAnalysis]: Checked inductivity of 1528 backedges. 53 proven. 149 refuted. 0 times theorem prover too weak. 1326 trivial. 0 not checked. [2023-04-02 22:37:56,201 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 22:37:56,317 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 22:37:56,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039940716] [2023-04-02 22:37:56,318 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 22:37:56,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1228241697] [2023-04-02 22:37:56,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1228241697] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 22:37:56,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1401877581] [2023-04-02 22:37:56,319 INFO L159 IcfgInterpreter]: Started Sifa with 25 locations of interest [2023-04-02 22:37:56,319 INFO L166 IcfgInterpreter]: Building call graph [2023-04-02 22:37:56,320 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-02 22:37:56,320 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-02 22:37:56,320 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-02 22:37:56,330 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 9 for LOIs [2023-04-02 22:37:57,135 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2023-04-02 22:37:57,137 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 38 for LOIs [2023-04-02 22:37:57,154 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2023-04-02 22:37:57,157 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-02 22:37:57,834 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '7748#(and (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0))' at error location [2023-04-02 22:37:57,835 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-02 22:37:57,835 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-04-02 22:37:57,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2023-04-02 22:37:57,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321794408] [2023-04-02 22:37:57,835 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-04-02 22:37:57,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-02 22:37:57,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 22:37:57,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-02 22:37:57,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=717, Unknown=0, NotChecked=0, Total=812 [2023-04-02 22:37:57,836 INFO L87 Difference]: Start difference. First operand 119 states and 129 transitions. Second operand has 12 states, 11 states have (on average 2.090909090909091) internal successors, (23), 11 states have internal predecessors, (23), 7 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (29), 7 states have call predecessors, (29), 7 states have call successors, (29) [2023-04-02 22:37:58,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 22:37:58,242 INFO L93 Difference]: Finished difference Result 149 states and 162 transitions. [2023-04-02 22:37:58,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-04-02 22:37:58,243 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.090909090909091) internal successors, (23), 11 states have internal predecessors, (23), 7 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (29), 7 states have call predecessors, (29), 7 states have call successors, (29) Word has length 158 [2023-04-02 22:37:58,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 22:37:58,244 INFO L225 Difference]: With dead ends: 149 [2023-04-02 22:37:58,244 INFO L226 Difference]: Without dead ends: 138 [2023-04-02 22:37:58,244 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 361 GetRequests, 329 SyntacticMatches, 3 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=110, Invalid=820, Unknown=0, NotChecked=0, Total=930 [2023-04-02 22:37:58,245 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 13 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 601 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 637 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 601 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-02 22:37:58,245 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 147 Invalid, 637 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 601 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-02 22:37:58,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2023-04-02 22:37:58,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2023-04-02 22:37:58,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 79 states have (on average 1.0126582278481013) internal successors, (80), 79 states have internal predecessors, (80), 36 states have call successors, (36), 24 states have call predecessors, (36), 22 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2023-04-02 22:37:58,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 150 transitions. [2023-04-02 22:37:58,290 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 150 transitions. Word has length 158 [2023-04-02 22:37:58,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 22:37:58,290 INFO L495 AbstractCegarLoop]: Abstraction has 138 states and 150 transitions. [2023-04-02 22:37:58,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.090909090909091) internal successors, (23), 11 states have internal predecessors, (23), 7 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (29), 7 states have call predecessors, (29), 7 states have call successors, (29) [2023-04-02 22:37:58,290 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 150 transitions. [2023-04-02 22:37:58,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2023-04-02 22:37:58,292 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 22:37:58,292 INFO L195 NwaCegarLoop]: trace histogram [33, 32, 32, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 22:37:58,299 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-04-02 22:37:58,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-04-02 22:37:58,494 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 22:37:58,494 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 22:37:58,494 INFO L85 PathProgramCache]: Analyzing trace with hash 827048220, now seen corresponding path program 5 times [2023-04-02 22:37:58,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 22:37:58,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259660055] [2023-04-02 22:37:58,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 22:37:58,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 22:37:58,505 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 22:37:58,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [65717620] [2023-04-02 22:37:58,505 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-04-02 22:37:58,505 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 22:37:58,505 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 22:37:58,506 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 22:37:58,507 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-04-02 22:37:58,674 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-04-02 22:37:58,675 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-02 22:37:58,676 INFO L262 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 44 conjunts are in the unsatisfiable core [2023-04-02 22:37:58,679 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 22:37:59,684 INFO L134 CoverageAnalysis]: Checked inductivity of 2153 backedges. 321 proven. 69 refuted. 0 times theorem prover too weak. 1763 trivial. 0 not checked. [2023-04-02 22:37:59,684 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 22:38:00,827 INFO L134 CoverageAnalysis]: Checked inductivity of 2153 backedges. 244 proven. 39 refuted. 0 times theorem prover too weak. 1870 trivial. 0 not checked. [2023-04-02 22:38:00,827 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 22:38:00,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259660055] [2023-04-02 22:38:00,828 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 22:38:00,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [65717620] [2023-04-02 22:38:00,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [65717620] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 22:38:00,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [136135602] [2023-04-02 22:38:00,829 INFO L159 IcfgInterpreter]: Started Sifa with 25 locations of interest [2023-04-02 22:38:00,829 INFO L166 IcfgInterpreter]: Building call graph [2023-04-02 22:38:00,830 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-02 22:38:00,830 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-02 22:38:00,830 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-02 22:38:00,851 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 9 for LOIs [2023-04-02 22:38:01,408 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2023-04-02 22:38:01,410 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 38 for LOIs [2023-04-02 22:38:01,416 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2023-04-02 22:38:01,419 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-02 22:38:04,074 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '9315#(and (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0))' at error location [2023-04-02 22:38:04,074 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-02 22:38:04,074 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-04-02 22:38:04,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9] total 18 [2023-04-02 22:38:04,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263327868] [2023-04-02 22:38:04,075 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-04-02 22:38:04,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-04-02 22:38:04,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 22:38:04,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-04-02 22:38:04,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=808, Unknown=1, NotChecked=0, Total=930 [2023-04-02 22:38:04,076 INFO L87 Difference]: Start difference. First operand 138 states and 150 transitions. Second operand has 18 states, 15 states have (on average 2.066666666666667) internal successors, (31), 14 states have internal predecessors, (31), 9 states have call successors, (34), 3 states have call predecessors, (34), 3 states have return successors, (34), 8 states have call predecessors, (34), 9 states have call successors, (34) [2023-04-02 22:38:05,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 22:38:05,395 INFO L93 Difference]: Finished difference Result 138 states and 150 transitions. [2023-04-02 22:38:05,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-04-02 22:38:05,396 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 15 states have (on average 2.066666666666667) internal successors, (31), 14 states have internal predecessors, (31), 9 states have call successors, (34), 3 states have call predecessors, (34), 3 states have return successors, (34), 8 states have call predecessors, (34), 9 states have call successors, (34) Word has length 185 [2023-04-02 22:38:05,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 22:38:05,396 INFO L225 Difference]: With dead ends: 138 [2023-04-02 22:38:05,396 INFO L226 Difference]: Without dead ends: 0 [2023-04-02 22:38:05,397 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 558 GetRequests, 523 SyntacticMatches, 3 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 313 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=152, Invalid=969, Unknown=1, NotChecked=0, Total=1122 [2023-04-02 22:38:05,398 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 17 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-04-02 22:38:05,398 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 53 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-04-02 22:38:05,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-04-02 22:38:05,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-04-02 22:38:05,399 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 22:38:05,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-04-02 22:38:05,399 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 185 [2023-04-02 22:38:05,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 22:38:05,399 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-04-02 22:38:05,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 15 states have (on average 2.066666666666667) internal successors, (31), 14 states have internal predecessors, (31), 9 states have call successors, (34), 3 states have call predecessors, (34), 3 states have return successors, (34), 8 states have call predecessors, (34), 9 states have call successors, (34) [2023-04-02 22:38:05,399 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-04-02 22:38:05,399 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-04-02 22:38:05,401 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-04-02 22:38:05,406 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-04-02 22:38:05,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-04-02 22:38:05,603 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-04-02 22:38:13,972 INFO L899 garLoopResultBuilder]: For program point reach_errorEXIT(line 8) no Hoare annotation was computed. [2023-04-02 22:38:13,973 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line 8) no Hoare annotation was computed. [2023-04-02 22:38:13,973 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 11 13) the Hoare annotation is: true [2023-04-02 22:38:13,973 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 11 13) no Hoare annotation was computed. [2023-04-02 22:38:13,973 INFO L895 garLoopResultBuilder]: At program point L33-2(lines 33 46) 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 (= (select |#valid| 2) 1)) (<= |#StackHeapBarrier| 0) (let ((.cse1 (* 3 (* main_~n~0 main_~n~0))) (.cse2 (* main_~n~0 3))) (and (<= main_~n~0 (+ main_~a~0 1)) (= (+ .cse1 7 (* main_~n~0 9)) (+ main_~z~0 main_~y~0)) (= (+ .cse1 (* main_~n~0 main_~n~0 main_~n~0) .cse2 1) (+ main_~y~0 main_~x~0)) (<= 0 main_~a~0) (= (+ .cse1 .cse2 1) main_~y~0) (<= main_~a~0 5))) (not (= 13 (select |#length| 2))))) [2023-04-02 22:38:13,973 INFO L895 garLoopResultBuilder]: At program point L33-3(lines 33 46) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1)) (.cse5 (<= 0 main_~a~0)) (.cse1 (* 3 (* main_~n~0 main_~n~0))) (.cse4 (* main_~n~0 3))) (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)) (let ((.cse2 (div main_~z~0 6)) (.cse3 (* main_~n~0 main_~n~0 main_~n~0))) (and (= (+ .cse1 7 (* main_~n~0 9)) (+ main_~z~0 main_~y~0)) (<= .cse2 (+ main_~a~0 2)) (= (+ .cse1 .cse3 .cse4 1) (+ main_~y~0 main_~x~0)) (< (+ main_~a~0 1) .cse2) .cse5 (= .cse3 main_~x~0) (<= main_~a~0 5))) (and (= (+ (* main_~x~0 18) (* main_~y~0 12) 6) (+ (* main_~z~0 2) (* main_~z~0 main_~y~0))) (= (+ (* main_~n~0 6) 6) main_~z~0) .cse5 (= (+ .cse1 .cse4 1) main_~y~0) (<= main_~a~0 0) (= (* main_~z~0 main_~x~0) (+ (* main_~x~0 12) (* (* main_~a~0 main_~x~0) 6)))) (not (= |#NULL.base| 0)) (not (= (select |#valid| 2) 1)) (<= |#StackHeapBarrier| 0) (not (= 13 (select |#length| 2))))) [2023-04-02 22:38:13,973 INFO L899 garLoopResultBuilder]: For program point mainEXIT(lines 22 56) no Hoare annotation was computed. [2023-04-02 22:38:13,974 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))) (and (= (+ (* main_~x~0 18) (* main_~y~0 12) 6) (+ (* main_~z~0 2) (* main_~z~0 main_~y~0))) (= (+ (* main_~n~0 6) 6) main_~z~0) (<= 0 main_~a~0) (= (+ (* 3 (* main_~n~0 main_~n~0)) (* main_~n~0 3) 1) main_~y~0) (<= main_~a~0 5)) (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 (= (select |#valid| 2) 1)) (<= |#StackHeapBarrier| 0) (not (= 13 (select |#length| 2))))) [2023-04-02 22:38:13,974 INFO L895 garLoopResultBuilder]: At program point L50(line 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))) (and (= (+ (* main_~x~0 18) (* main_~y~0 12) 6) (+ (* main_~z~0 2) (* main_~z~0 main_~y~0))) (= (+ (* main_~n~0 6) 6) main_~z~0) (<= 0 main_~a~0) (= (+ (* 3 (* main_~n~0 main_~n~0)) (* main_~n~0 3) 1) main_~y~0) (<= main_~a~0 5)) (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 (= (select |#valid| 2) 1)) (<= |#StackHeapBarrier| 0) (not (= 13 (select |#length| 2))))) [2023-04-02 22:38:13,974 INFO L895 garLoopResultBuilder]: At program point L48(line 48) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1)) (.cse5 (<= 0 main_~a~0)) (.cse1 (* 3 (* main_~n~0 main_~n~0))) (.cse4 (* main_~n~0 3))) (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)) (let ((.cse2 (div main_~z~0 6)) (.cse3 (* main_~n~0 main_~n~0 main_~n~0))) (and (= (+ .cse1 7 (* main_~n~0 9)) (+ main_~z~0 main_~y~0)) (<= .cse2 (+ main_~a~0 2)) (= (+ .cse1 .cse3 .cse4 1) (+ main_~y~0 main_~x~0)) (< (+ main_~a~0 1) .cse2) .cse5 (= .cse3 main_~x~0) (<= main_~a~0 5))) (and (= (+ (* main_~x~0 18) (* main_~y~0 12) 6) (+ (* main_~z~0 2) (* main_~z~0 main_~y~0))) (= (+ (* main_~n~0 6) 6) main_~z~0) .cse5 (= (+ .cse1 .cse4 1) main_~y~0) (<= main_~a~0 0) (= (* main_~z~0 main_~x~0) (+ (* main_~x~0 12) (* (* main_~a~0 main_~x~0) 6)))) (not (= |#NULL.base| 0)) (not (= (select |#valid| 2) 1)) (<= |#StackHeapBarrier| 0) (not (= 13 (select |#length| 2))))) [2023-04-02 22:38:13,974 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 22 56) the Hoare annotation is: true [2023-04-02 22:38:13,974 INFO L899 garLoopResultBuilder]: For program point L38(lines 33 46) no Hoare annotation was computed. [2023-04-02 22:38:13,975 INFO L895 garLoopResultBuilder]: At program point L36(line 36) 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_~n~0 (+ main_~a~0 1)) (= (+ (* 3 (* main_~n~0 main_~n~0)) (* main_~n~0 main_~n~0 main_~n~0) (* main_~n~0 3) 1) (+ main_~y~0 main_~x~0)) (= (+ (* main_~z~0 main_~z~0) 12) (+ (* main_~y~0 12) (* main_~z~0 6))) (= (+ (* main_~n~0 6) 6) main_~z~0) (<= 0 main_~a~0) (<= main_~a~0 5)) (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 (= (select |#valid| 2) 1)) (<= |#StackHeapBarrier| 0) (not (= 13 (select |#length| 2))))) [2023-04-02 22:38:13,975 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 (= (select |#valid| 2) 1)) (<= |#StackHeapBarrier| 0) (let ((.cse1 (* 3 (* main_~n~0 main_~n~0))) (.cse2 (* main_~n~0 3))) (and (<= main_~n~0 (+ main_~a~0 1)) (= (+ .cse1 7 (* main_~n~0 9)) (+ main_~z~0 main_~y~0)) (= (+ .cse1 (* main_~n~0 main_~n~0 main_~n~0) .cse2 1) (+ main_~y~0 main_~x~0)) (<= 0 main_~a~0) (= (+ .cse1 .cse2 1) main_~y~0) (<= main_~a~0 5))) (not (= 13 (select |#length| 2))))) [2023-04-02 22:38:13,975 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 (= (select |#valid| 2) 1)) (<= |#StackHeapBarrier| 0) (let ((.cse1 (* 3 (* main_~n~0 main_~n~0))) (.cse2 (* main_~n~0 3))) (and (<= main_~n~0 (+ main_~a~0 1)) (= (+ .cse1 7 (* main_~n~0 9)) (+ main_~z~0 main_~y~0)) (= (+ .cse1 (* main_~n~0 main_~n~0 main_~n~0) .cse2 1) (+ main_~y~0 main_~x~0)) (<= 0 main_~a~0) (= (+ .cse1 .cse2 1) main_~y~0) (<= main_~a~0 5))) (not (= 13 (select |#length| 2))))) [2023-04-02 22:38:13,975 INFO L895 garLoopResultBuilder]: At program point L26(line 26) 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)) (exists ((|v_main_#t~nondet4_3| Int)) (let ((.cse1 (mod |v_main_#t~nondet4_3| 65536))) (and (< 32767 .cse1) (= (+ 65536 main_~a~0) .cse1)))) (not (= (select |#length| 3) 12)) (not (= (select |#valid| 0) 0)) (not (= (select .cse0 1) 0)) (not (= (select |#valid| 1) 1)) (not (= |#NULL.base| 0)) (exists ((|v_main_#t~nondet4_3| Int)) (let ((.cse2 (mod |v_main_#t~nondet4_3| 65536))) (and (<= .cse2 32767) (= main_~a~0 .cse2)))) (not (= (select |#valid| 2) 1)) (<= |#StackHeapBarrier| 0) (not (= 13 (select |#length| 2))))) [2023-04-02 22:38:13,975 INFO L899 garLoopResultBuilder]: For program point L26-1(line 26) no Hoare annotation was computed. [2023-04-02 22:38:13,975 INFO L899 garLoopResultBuilder]: For program point L53(line 53) no Hoare annotation was computed. [2023-04-02 22:38:13,976 INFO L895 garLoopResultBuilder]: At program point L51(line 51) 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))) (and (= (+ (* main_~x~0 18) (* main_~y~0 12) 6) (+ (* main_~z~0 2) (* main_~z~0 main_~y~0))) (= (+ (* main_~n~0 6) 6) main_~z~0) (<= 0 main_~a~0) (= (+ (* 3 (* main_~n~0 main_~n~0)) (* main_~n~0 3) 1) main_~y~0) (<= main_~a~0 5)) (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 (= (select |#valid| 2) 1)) (<= |#StackHeapBarrier| 0) (not (= 13 (select |#length| 2))))) [2023-04-02 22:38:13,976 INFO L895 garLoopResultBuilder]: At program point L49(line 49) the Hoare annotation is: (let ((.cse4 (* 3 (* main_~n~0 main_~n~0))) (.cse5 (* main_~n~0 3)) (.cse1 (* main_~y~0 12)) (.cse2 (= (+ (* main_~n~0 6) 6) main_~z~0)) (.cse3 (<= 0 main_~a~0)) (.cse0 (select |#memory_int| 1))) (or (not (= (select .cse0 0) 48)) (not (= |#NULL.offset| 0)) (not (= 2 (select |#length| 1))) (and (= (+ 5 main_~y~0) main_~z~0) (= (+ (* main_~x~0 18) .cse1 6) (+ (* main_~z~0 2) (* main_~z~0 main_~y~0))) .cse2 .cse3 (= (+ .cse4 .cse5 1) main_~y~0) (<= main_~a~0 0)) (not (= (select |#valid| 3) 1)) (let ((.cse6 (div main_~z~0 6))) (and (<= .cse6 (+ main_~a~0 2)) (= (+ .cse4 (* main_~n~0 main_~n~0 main_~n~0) .cse5 1) (+ main_~y~0 main_~x~0)) (< (+ main_~a~0 1) .cse6) (= (+ (* main_~z~0 main_~z~0) 12) (+ .cse1 (* main_~z~0 6))) .cse2 .cse3 (<= main_~a~0 5))) (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 (= (select |#valid| 2) 1)) (<= |#StackHeapBarrier| 0) (not (= 13 (select |#length| 2))))) [2023-04-02 22:38:13,976 INFO L895 garLoopResultBuilder]: At program point L37(line 37) 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_~n~0 (+ main_~a~0 1)) (= (+ (* 3 (* main_~n~0 main_~n~0)) (* main_~n~0 main_~n~0 main_~n~0) (* main_~n~0 3) 1) (+ main_~y~0 main_~x~0)) (= (+ (* main_~z~0 main_~z~0) 12) (+ (* main_~y~0 12) (* main_~z~0 6))) (= (+ (* main_~n~0 6) 6) main_~z~0) (<= 0 main_~a~0) (<= main_~a~0 5)) (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 (= (select |#valid| 2) 1)) (<= |#StackHeapBarrier| 0) (not (= 13 (select |#length| 2))))) [2023-04-02 22:38:13,976 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)) (let ((.cse1 (* 3 (* main_~n~0 main_~n~0))) (.cse2 (* main_~n~0 main_~n~0 main_~n~0))) (and (<= main_~n~0 (+ main_~a~0 1)) (= (+ .cse1 7 (* main_~n~0 9)) (+ main_~z~0 main_~y~0)) (= (+ .cse1 .cse2 (* main_~n~0 3) 1) (+ main_~y~0 main_~x~0)) (<= 0 main_~a~0) (= .cse2 main_~x~0) (<= main_~a~0 5))) (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 (= (select |#valid| 2) 1)) (<= |#StackHeapBarrier| 0) (not (= 13 (select |#length| 2))))) [2023-04-02 22:38:13,976 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 22:38:13,976 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2023-04-02 22:38:13,976 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-04-02 22:38:13,977 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) (= 13 (select |#length| 2)) (= 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) (= (select .cse0 1) 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) [2023-04-02 22:38:13,977 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2023-04-02 22:38:13,977 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(line -1) the Hoare annotation is: true [2023-04-02 22:38:13,977 INFO L899 garLoopResultBuilder]: For program point L16(lines 16 17) no Hoare annotation was computed. [2023-04-02 22:38:13,977 INFO L899 garLoopResultBuilder]: For program point L15(lines 15 18) no Hoare annotation was computed. [2023-04-02 22:38:13,977 INFO L899 garLoopResultBuilder]: For program point L15-2(lines 14 20) no Hoare annotation was computed. [2023-04-02 22:38:13,977 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 14 20) no Hoare annotation was computed. [2023-04-02 22:38:13,977 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 14 20) the Hoare annotation is: true [2023-04-02 22:38:13,977 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2023-04-02 22:38:13,980 INFO L445 BasicCegarLoop]: Path program histogram: [5, 4, 2, 1, 1] [2023-04-02 22:38:13,982 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-04-02 22:38:14,000 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.04 10:38:14 BoogieIcfgContainer [2023-04-02 22:38:14,000 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-04-02 22:38:14,001 INFO L158 Benchmark]: Toolchain (without parser) took 51795.11ms. Allocated memory was 288.4MB in the beginning and 599.8MB in the end (delta: 311.4MB). Free memory was 223.7MB in the beginning and 310.9MB in the end (delta: -87.2MB). Peak memory consumption was 329.6MB. Max. memory is 8.0GB. [2023-04-02 22:38:14,001 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 186.6MB. Free memory was 136.6MB in the beginning and 136.5MB in the end (delta: 151.0kB). There was no memory consumed. Max. memory is 8.0GB. [2023-04-02 22:38:14,001 INFO L158 Benchmark]: CACSL2BoogieTranslator took 198.75ms. Allocated memory is still 288.4MB. Free memory was 223.7MB in the beginning and 212.6MB in the end (delta: 11.1MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-04-02 22:38:14,002 INFO L158 Benchmark]: Boogie Preprocessor took 22.71ms. Allocated memory is still 288.4MB. Free memory was 212.6MB in the beginning and 211.1MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-04-02 22:38:14,002 INFO L158 Benchmark]: RCFGBuilder took 265.90ms. Allocated memory is still 288.4MB. Free memory was 211.1MB in the beginning and 197.4MB in the end (delta: 13.6MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2023-04-02 22:38:14,002 INFO L158 Benchmark]: TraceAbstraction took 51302.70ms. Allocated memory was 288.4MB in the beginning and 599.8MB in the end (delta: 311.4MB). Free memory was 196.4MB in the beginning and 310.9MB in the end (delta: -114.5MB). Peak memory consumption was 302.4MB. Max. memory is 8.0GB. [2023-04-02 22:38:14,003 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 186.6MB. Free memory was 136.6MB in the beginning and 136.5MB in the end (delta: 151.0kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 198.75ms. Allocated memory is still 288.4MB. Free memory was 223.7MB in the beginning and 212.6MB in the end (delta: 11.1MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 22.71ms. Allocated memory is still 288.4MB. Free memory was 212.6MB in the beginning and 211.1MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 265.90ms. Allocated memory is still 288.4MB. Free memory was 211.1MB in the beginning and 197.4MB in the end (delta: 13.6MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * TraceAbstraction took 51302.70ms. Allocated memory was 288.4MB in the beginning and 599.8MB in the end (delta: 311.4MB). Free memory was 196.4MB in the beginning and 310.9MB in the end (delta: -114.5MB). Peak memory consumption was 302.4MB. 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: 17]: 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, 34 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 51.2s, OverallIterations: 13, TraceHistogramMax: 33, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 8.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 8.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1 mSolverCounterUnknown, 257 SdHoareTripleChecker+Valid, 5.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 214 mSDsluCounter, 1265 SdHoareTripleChecker+Invalid, 5.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 905 mSDsCounter, 444 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3512 IncrementalHoareTripleChecker+Invalid, 3957 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 444 mSolverCounterUnsat, 360 mSDtfsCounter, 3512 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3013 GetRequests, 2647 SyntacticMatches, 19 SemanticMatches, 347 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2261 ImplicationChecksByTransitivity, 16.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=138occurred in iteration=12, InterpolantAutomatonStates: 135, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 13 MinimizatonAttempts, 41 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 19 LocationsWithAnnotation, 86 PreInvPairs, 143 NumberOfFragments, 1784 HoareAnnotationTreeSize, 86 FomulaSimplifications, 45297 FormulaSimplificationTreeSizeReduction, 2.0s HoareSimplificationTime, 19 FomulaSimplificationsInter, 12523 FormulaSimplificationTreeSizeReductionInter, 6.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 6.8s InterpolantComputationTime, 1144 NumberOfCodeBlocks, 839 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 1658 ConstructedInterpolants, 0 QuantifiedInterpolants, 7443 SizeOfPredicates, 44 NumberOfNonLiveVariables, 2063 ConjunctsInSsa, 365 ConjunctsInUnsatCore, 20 InterpolantComputations, 1 PerfectInterpolantSequences, 10354/11006 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: 5, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 17, DAG_INTERPRETER_EARLY_EXITS: 1, TOOLS_POST_APPLICATIONS: 14, TOOLS_POST_TIME: 0.1s, TOOLS_POST_CALL_APPLICATIONS: 11, TOOLS_POST_CALL_TIME: 0.1s, TOOLS_POST_RETURN_APPLICATIONS: 6, TOOLS_POST_RETURN_TIME: 0.1s, TOOLS_QUANTIFIERELIM_APPLICATIONS: 31, TOOLS_QUANTIFIERELIM_TIME: 0.2s, TOOLS_QUANTIFIERELIM_MAX_TIME: 0.0s, FLUID_QUERY_TIME: 0.0s, FLUID_QUERIES: 52, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 7, DOMAIN_JOIN_TIME: 0.0s, 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: 17, 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: 6, CALL_SUMMARIZER_CACHE_MISSES: 3, 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: 110, DAG_COMPRESSION_RETAINED_NODES: 60, 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)) || !(\valid[2] == 1)) || unknown-#StackHeapBarrier-unknown <= 0) || (((((n <= a + 1 && 3 * (n * n) + 7 + n * 9 == z + y) && 3 * (n * n) + n * n * n + n * 3 + 1 == y + x) && 0 <= a) && 3 * (n * n) + n * 3 + 1 == y) && a <= 5)) || !(13 == unknown-#length-unknown[2]) RESULT: Ultimate proved your program to be correct! [2023-04-02 22:38:14,065 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...