/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/ps5-ll_valuebound10.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-02 23:29:15,249 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-02 23:29:15,251 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-02 23:29:15,280 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-02 23:29:15,280 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-02 23:29:15,282 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-02 23:29:15,286 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-02 23:29:15,287 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-02 23:29:15,288 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-02 23:29:15,291 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-02 23:29:15,293 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-02 23:29:15,294 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-02 23:29:15,294 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-02 23:29:15,295 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-02 23:29:15,296 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-02 23:29:15,296 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-02 23:29:15,297 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-02 23:29:15,297 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-02 23:29:15,298 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-02 23:29:15,299 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-02 23:29:15,300 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-02 23:29:15,301 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-02 23:29:15,302 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-02 23:29:15,303 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-02 23:29:15,311 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-02 23:29:15,312 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-02 23:29:15,312 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-02 23:29:15,313 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-02 23:29:15,313 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-02 23:29:15,313 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-02 23:29:15,314 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-02 23:29:15,314 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-02 23:29:15,315 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-02 23:29:15,315 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-02 23:29:15,316 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-02 23:29:15,316 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-02 23:29:15,316 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-02 23:29:15,316 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-02 23:29:15,316 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-02 23:29:15,317 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-02 23:29:15,317 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-02 23:29:15,318 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf [2023-04-02 23:29:15,341 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-02 23:29:15,341 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-02 23:29:15,341 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-02 23:29:15,341 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-02 23:29:15,342 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-02 23:29:15,342 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-02 23:29:15,342 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-02 23:29:15,342 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-02 23:29:15,342 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-02 23:29:15,342 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-02 23:29:15,343 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-02 23:29:15,343 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-02 23:29:15,343 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-02 23:29:15,343 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-02 23:29:15,343 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-02 23:29:15,343 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-02 23:29:15,343 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-02 23:29:15,344 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-02 23:29:15,344 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-02 23:29:15,344 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-02 23:29:15,344 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-02 23:29:15,344 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-02 23:29:15,344 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-02 23:29:15,344 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-02 23:29:15,344 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-02 23:29:15,345 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-02 23:29:15,345 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-02 23:29:15,345 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-02 23:29:15,345 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-02 23:29:15,345 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-02 23:29:15,345 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-02 23:29:15,345 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-02 23:29:15,345 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 23:29:15,345 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-02 23:29:15,345 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-02 23:29:15,345 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-02 23:29:15,346 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-02 23:29:15,346 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-02 23:29:15,346 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-02 23:29:15,346 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-02 23:29:15,346 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-02 23:29:15,346 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> OctagonDomain [2023-04-02 23:29:15,471 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-02 23:29:15,483 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-02 23:29:15,485 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-02 23:29:15,485 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-02 23:29:15,486 INFO L275 PluginConnector]: CDTParser initialized [2023-04-02 23:29:15,486 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/ps5-ll_valuebound10.c [2023-04-02 23:29:16,476 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-02 23:29:16,599 INFO L351 CDTParser]: Found 1 translation units. [2023-04-02 23:29:16,600 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/ps5-ll_valuebound10.c [2023-04-02 23:29:16,603 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eafe1b3b4/107822ce0c994d7fa7a93a8f03520c39/FLAGa9e1b859e [2023-04-02 23:29:16,622 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eafe1b3b4/107822ce0c994d7fa7a93a8f03520c39 [2023-04-02 23:29:16,623 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-02 23:29:16,624 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-02 23:29:16,625 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-02 23:29:16,625 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-02 23:29:16,627 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-02 23:29:16,627 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 11:29:16" (1/1) ... [2023-04-02 23:29:16,628 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4abb8954 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:29:16, skipping insertion in model container [2023-04-02 23:29:16,628 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 11:29:16" (1/1) ... [2023-04-02 23:29:16,633 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-02 23:29:16,643 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-02 23:29:16,723 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/ps5-ll_valuebound10.c[458,471] [2023-04-02 23:29:16,732 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 23:29:16,738 INFO L203 MainTranslator]: Completed pre-run [2023-04-02 23:29:16,745 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/ps5-ll_valuebound10.c[458,471] [2023-04-02 23:29:16,749 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 23:29:16,757 INFO L208 MainTranslator]: Completed translation [2023-04-02 23:29:16,758 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:29:16 WrapperNode [2023-04-02 23:29:16,758 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-02 23:29:16,758 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-02 23:29:16,759 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-02 23:29:16,759 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-02 23:29:16,765 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:29:16" (1/1) ... [2023-04-02 23:29:16,765 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:29:16" (1/1) ... [2023-04-02 23:29:16,768 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:29:16" (1/1) ... [2023-04-02 23:29:16,769 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:29:16" (1/1) ... [2023-04-02 23:29:16,772 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:29:16" (1/1) ... [2023-04-02 23:29:16,774 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:29:16" (1/1) ... [2023-04-02 23:29:16,775 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:29:16" (1/1) ... [2023-04-02 23:29:16,776 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:29:16" (1/1) ... [2023-04-02 23:29:16,777 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-02 23:29:16,777 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-02 23:29:16,778 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-02 23:29:16,778 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-02 23:29:16,778 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:29:16" (1/1) ... [2023-04-02 23:29:16,782 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 23:29:16,790 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 23:29:16,798 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-04-02 23:29:16,820 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-04-02 23:29:16,831 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-02 23:29:16,831 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-02 23:29:16,831 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-02 23:29:16,832 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-02 23:29:16,832 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-04-02 23:29:16,832 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-02 23:29:16,832 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-02 23:29:16,832 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-02 23:29:16,832 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-02 23:29:16,832 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-02 23:29:16,832 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_short [2023-04-02 23:29:16,832 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-02 23:29:16,832 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-04-02 23:29:16,832 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-02 23:29:16,833 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-02 23:29:16,833 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-02 23:29:16,833 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-02 23:29:16,833 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-02 23:29:16,833 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-02 23:29:16,833 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-02 23:29:16,874 INFO L236 CfgBuilder]: Building ICFG [2023-04-02 23:29:16,875 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-02 23:29:17,004 INFO L277 CfgBuilder]: Performing block encoding [2023-04-02 23:29:17,031 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-02 23:29:17,032 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-04-02 23:29:17,033 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 11:29:17 BoogieIcfgContainer [2023-04-02 23:29:17,033 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-02 23:29:17,035 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-02 23:29:17,035 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-02 23:29:17,041 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-02 23:29:17,041 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.04 11:29:16" (1/3) ... [2023-04-02 23:29:17,042 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61af3cb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 11:29:17, skipping insertion in model container [2023-04-02 23:29:17,042 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:29:16" (2/3) ... [2023-04-02 23:29:17,042 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61af3cb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 11:29:17, skipping insertion in model container [2023-04-02 23:29:17,042 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 11:29:17" (3/3) ... [2023-04-02 23:29:17,043 INFO L112 eAbstractionObserver]: Analyzing ICFG ps5-ll_valuebound10.c [2023-04-02 23:29:17,081 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-02 23:29:17,082 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-02 23:29:17,121 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-02 23:29:17,126 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;@5f201220, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-02 23:29:17,127 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-02 23:29:17,129 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 13 states have internal predecessors, (16), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-04-02 23:29:17,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-04-02 23:29:17,134 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 23:29:17,134 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 23:29:17,134 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 23:29:17,137 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 23:29:17,137 INFO L85 PathProgramCache]: Analyzing trace with hash 395619074, now seen corresponding path program 1 times [2023-04-02 23:29:17,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 23:29:17,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286462090] [2023-04-02 23:29:17,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:29:17,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 23:29:17,203 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 23:29:17,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [330963497] [2023-04-02 23:29:17,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:29:17,204 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 23:29:17,204 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 23:29:17,206 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 23:29:17,212 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-04-02 23:29:17,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:29:17,280 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 15 conjunts are in the unsatisfiable core [2023-04-02 23:29:17,285 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 23:29:17,365 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-04-02 23:29:17,366 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-02 23:29:17,366 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 23:29:17,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286462090] [2023-04-02 23:29:17,384 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 23:29:17,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [330963497] [2023-04-02 23:29:17,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [330963497] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 23:29:17,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 23:29:17,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-02 23:29:17,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434774829] [2023-04-02 23:29:17,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 23:29:17,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 23:29:17,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 23:29:17,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 23:29:17,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 23:29:17,419 INFO L87 Difference]: Start difference. First operand has 25 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 13 states have internal predecessors, (16), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-02 23:29:17,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 23:29:17,509 INFO L93 Difference]: Finished difference Result 51 states and 71 transitions. [2023-04-02 23:29:17,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-04-02 23:29:17,511 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 17 [2023-04-02 23:29:17,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 23:29:17,516 INFO L225 Difference]: With dead ends: 51 [2023-04-02 23:29:17,516 INFO L226 Difference]: Without dead ends: 28 [2023-04-02 23:29:17,519 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-04-02 23:29:17,522 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 7 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 23:29:17,523 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 72 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 23:29:17,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2023-04-02 23:29:17,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2023-04-02 23:29:17,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 16 states have internal predecessors, (17), 8 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-04-02 23:29:17,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2023-04-02 23:29:17,557 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 17 [2023-04-02 23:29:17,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 23:29:17,557 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2023-04-02 23:29:17,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-02 23:29:17,557 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2023-04-02 23:29:17,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-04-02 23:29:17,559 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 23:29:17,559 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 23:29:17,565 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 23:29:17,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-04-02 23:29:17,763 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 23:29:17,764 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 23:29:17,764 INFO L85 PathProgramCache]: Analyzing trace with hash 398349892, now seen corresponding path program 1 times [2023-04-02 23:29:17,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 23:29:17,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682080098] [2023-04-02 23:29:17,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:29:17,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 23:29:17,785 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 23:29:17,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1802714425] [2023-04-02 23:29:17,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:29:17,786 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 23:29:17,786 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 23:29:17,787 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 23:29:17,788 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-04-02 23:29:17,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:29:17,836 INFO L262 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 19 conjunts are in the unsatisfiable core [2023-04-02 23:29:17,842 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 23:29:17,933 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-04-02 23:29:17,933 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 23:29:18,055 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-04-02 23:29:18,055 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 23:29:18,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682080098] [2023-04-02 23:29:18,055 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 23:29:18,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1802714425] [2023-04-02 23:29:18,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1802714425] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 23:29:18,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2139329035] [2023-04-02 23:29:18,074 INFO L159 IcfgInterpreter]: Started Sifa with 19 locations of interest [2023-04-02 23:29:18,074 INFO L166 IcfgInterpreter]: Building call graph [2023-04-02 23:29:18,077 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-02 23:29:18,080 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-02 23:29:18,080 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-02 23:29:18,140 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 9 for LOIs [2023-04-02 23:29:18,521 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 64 for LOIs [2023-04-02 23:29:18,603 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 13 for LOIs [2023-04-02 23:29:18,606 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2023-04-02 23:29:18,609 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-02 23:29:19,232 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '352#(and (exists ((v_main_~c~0_BEFORE_CALL_9 Int) (v_main_~k~0_BEFORE_CALL_13 Int) (v_main_~y~0_BEFORE_CALL_13 Int) (v_main_~x~0_BEFORE_CALL_13 Int)) (and (not (= (+ (* 30 v_main_~x~0_BEFORE_CALL_13) v_main_~y~0_BEFORE_CALL_13) (+ (* 6 (* v_main_~y~0_BEFORE_CALL_13 v_main_~y~0_BEFORE_CALL_13 v_main_~y~0_BEFORE_CALL_13 v_main_~y~0_BEFORE_CALL_13 v_main_~y~0_BEFORE_CALL_13)) (* 15 (* v_main_~y~0_BEFORE_CALL_13 v_main_~y~0_BEFORE_CALL_13 v_main_~y~0_BEFORE_CALL_13 v_main_~y~0_BEFORE_CALL_13)) (* (* v_main_~y~0_BEFORE_CALL_13 v_main_~y~0_BEFORE_CALL_13 v_main_~y~0_BEFORE_CALL_13) 10)))) (or (and (<= v_main_~k~0_BEFORE_CALL_13 (+ 9 v_main_~y~0_BEFORE_CALL_13)) (<= v_main_~k~0_BEFORE_CALL_13 (+ 9 |#StackHeapBarrier|)) (= v_main_~c~0_BEFORE_CALL_9 v_main_~y~0_BEFORE_CALL_13) (<= 1 |#StackHeapBarrier|) (<= (+ v_main_~y~0_BEFORE_CALL_13 v_main_~k~0_BEFORE_CALL_13) 21) (<= 1 (+ |#StackHeapBarrier| v_main_~k~0_BEFORE_CALL_13)) (<= v_main_~y~0_BEFORE_CALL_13 v_main_~k~0_BEFORE_CALL_13) (<= v_main_~y~0_BEFORE_CALL_13 11) (<= 1 v_main_~y~0_BEFORE_CALL_13) (<= 0 v_main_~k~0_BEFORE_CALL_13) (<= v_main_~k~0_BEFORE_CALL_13 10) (<= 2 (+ v_main_~y~0_BEFORE_CALL_13 |#StackHeapBarrier|)) (= |#NULL.offset| 0) (<= v_main_~y~0_BEFORE_CALL_13 (+ |#StackHeapBarrier| 10)) (<= 1 (+ v_main_~y~0_BEFORE_CALL_13 v_main_~k~0_BEFORE_CALL_13)) (= |#NULL.base| 0)) (and (<= 1 |#StackHeapBarrier|) (= v_main_~y~0_BEFORE_CALL_13 0) (= v_main_~c~0_BEFORE_CALL_9 0) (= v_main_~x~0_BEFORE_CALL_13 0) (<= 0 v_main_~k~0_BEFORE_CALL_13) (<= v_main_~k~0_BEFORE_CALL_13 10) (= |#NULL.offset| 0) (= |#NULL.base| 0))))) (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0))' at error location [2023-04-02 23:29:19,232 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-02 23:29:19,233 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-04-02 23:29:19,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 11 [2023-04-02 23:29:19,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530317759] [2023-04-02 23:29:19,233 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-04-02 23:29:19,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-02 23:29:19,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 23:29:19,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-02 23:29:19,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=425, Unknown=0, NotChecked=0, Total=506 [2023-04-02 23:29:19,235 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 10 states have internal predecessors, (21), 4 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2023-04-02 23:29:19,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 23:29:19,338 INFO L93 Difference]: Finished difference Result 39 states and 44 transitions. [2023-04-02 23:29:19,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-04-02 23:29:19,339 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 10 states have internal predecessors, (21), 4 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) Word has length 24 [2023-04-02 23:29:19,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 23:29:19,339 INFO L225 Difference]: With dead ends: 39 [2023-04-02 23:29:19,339 INFO L226 Difference]: Without dead ends: 35 [2023-04-02 23:29:19,340 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 48 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=98, Invalid=502, Unknown=0, NotChecked=0, Total=600 [2023-04-02 23:29:19,341 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 16 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 23:29:19,341 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 90 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 23:29:19,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2023-04-02 23:29:19,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 30. [2023-04-02 23:29:19,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 17 states have (on average 1.0588235294117647) internal successors, (18), 17 states have internal predecessors, (18), 8 states have call successors, (8), 6 states have call predecessors, (8), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-04-02 23:29:19,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 32 transitions. [2023-04-02 23:29:19,346 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 32 transitions. Word has length 24 [2023-04-02 23:29:19,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 23:29:19,347 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 32 transitions. [2023-04-02 23:29:19,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 10 states have internal predecessors, (21), 4 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2023-04-02 23:29:19,347 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 32 transitions. [2023-04-02 23:29:19,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-04-02 23:29:19,347 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 23:29:19,348 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 23:29:19,353 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 23:29:19,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-04-02 23:29:19,552 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 23:29:19,553 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 23:29:19,553 INFO L85 PathProgramCache]: Analyzing trace with hash 2024645172, now seen corresponding path program 1 times [2023-04-02 23:29:19,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 23:29:19,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754767978] [2023-04-02 23:29:19,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:29:19,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 23:29:19,589 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 23:29:19,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1234417069] [2023-04-02 23:29:19,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:29:19,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 23:29:19,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 23:29:19,598 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 23:29:19,600 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 23:29:19,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:29:19,638 INFO L262 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 20 conjunts are in the unsatisfiable core [2023-04-02 23:29:19,640 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 23:29:19,742 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-04-02 23:29:19,742 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 23:29:24,588 WARN L839 $PredicateComparison]: unable to prove that (or (not (= (mod (+ (* 15 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0) (* 29 c_main_~y~0) (* 10 c_main_~y~0 c_main_~y~0 c_main_~y~0) (* 6 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0)) 30) 0)) (= (* c_main_~y~0 c_main_~k~0) (* c_main_~y~0 c_main_~y~0))) is different from false [2023-04-02 23:29:47,322 WARN L861 $PredicateComparison]: unable to prove that (or (not (= |c___VERIFIER_assert_#in~cond| 0)) (forall ((v_main_~k~0_BEFORE_CALL_19 Int) (v_main_~y~0_BEFORE_CALL_18 Int)) (or (= (* v_main_~y~0_BEFORE_CALL_18 v_main_~k~0_BEFORE_CALL_19) (* v_main_~y~0_BEFORE_CALL_18 v_main_~y~0_BEFORE_CALL_18)) (= (mod (+ (* v_main_~y~0_BEFORE_CALL_18 v_main_~y~0_BEFORE_CALL_18 v_main_~y~0_BEFORE_CALL_18 10) (* 29 v_main_~y~0_BEFORE_CALL_18) (* v_main_~y~0_BEFORE_CALL_18 v_main_~y~0_BEFORE_CALL_18 v_main_~y~0_BEFORE_CALL_18 v_main_~y~0_BEFORE_CALL_18 v_main_~y~0_BEFORE_CALL_18 6) (* v_main_~y~0_BEFORE_CALL_18 v_main_~y~0_BEFORE_CALL_18 v_main_~y~0_BEFORE_CALL_18 v_main_~y~0_BEFORE_CALL_18 15)) 30) 0)))) is different from true [2023-04-02 23:30:05,371 WARN L861 $PredicateComparison]: unable to prove that (or (not (= |c___VERIFIER_assert_#in~cond| 0)) (= c___VERIFIER_assert_~cond 0) (forall ((v_main_~k~0_BEFORE_CALL_19 Int) (v_main_~y~0_BEFORE_CALL_18 Int)) (or (= (* v_main_~y~0_BEFORE_CALL_18 v_main_~k~0_BEFORE_CALL_19) (* v_main_~y~0_BEFORE_CALL_18 v_main_~y~0_BEFORE_CALL_18)) (= (mod (+ (* v_main_~y~0_BEFORE_CALL_18 v_main_~y~0_BEFORE_CALL_18 v_main_~y~0_BEFORE_CALL_18 10) (* 29 v_main_~y~0_BEFORE_CALL_18) (* v_main_~y~0_BEFORE_CALL_18 v_main_~y~0_BEFORE_CALL_18 v_main_~y~0_BEFORE_CALL_18 v_main_~y~0_BEFORE_CALL_18 v_main_~y~0_BEFORE_CALL_18 6) (* v_main_~y~0_BEFORE_CALL_18 v_main_~y~0_BEFORE_CALL_18 v_main_~y~0_BEFORE_CALL_18 v_main_~y~0_BEFORE_CALL_18 15)) 30) 0)))) is different from true [2023-04-02 23:30:23,478 WARN L839 $PredicateComparison]: unable to prove that (or (not (= (mod (+ (* 15 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0) (* 29 c_main_~y~0) (* 10 c_main_~y~0 c_main_~y~0 c_main_~y~0) (* 6 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0)) 30) 0)) (forall ((main_~k~0 Int)) (or (< (+ c_main_~c~0 1) main_~k~0) (<= main_~k~0 c_main_~c~0) (= (+ (* main_~k~0 c_main_~y~0) main_~k~0) (+ (* 2 c_main_~y~0) (* c_main_~y~0 c_main_~y~0) 1))))) is different from false [2023-04-02 23:30:25,504 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 23:30:25,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754767978] [2023-04-02 23:30:25,504 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 23:30:25,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1234417069] [2023-04-02 23:30:25,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1234417069] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 23:30:25,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [495267839] [2023-04-02 23:30:25,506 INFO L159 IcfgInterpreter]: Started Sifa with 21 locations of interest [2023-04-02 23:30:25,506 INFO L166 IcfgInterpreter]: Building call graph [2023-04-02 23:30:25,506 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-02 23:30:25,506 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-02 23:30:25,506 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-02 23:30:25,518 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 9 for LOIs [2023-04-02 23:30:25,721 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2023-04-02 23:30:25,723 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 13 for LOIs [2023-04-02 23:30:25,724 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2023-04-02 23:30:25,727 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-02 23:30:25,981 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '645#(and (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0))' at error location [2023-04-02 23:30:25,981 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-02 23:30:25,981 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-04-02 23:30:25,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2023-04-02 23:30:25,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812911472] [2023-04-02 23:30:25,981 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-04-02 23:30:25,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-02 23:30:25,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 23:30:25,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-02 23:30:25,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=401, Unknown=5, NotChecked=172, Total=650 [2023-04-02 23:30:25,983 INFO L87 Difference]: Start difference. First operand 30 states and 32 transitions. Second operand has 9 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2023-04-02 23:30:26,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 23:30:26,078 INFO L93 Difference]: Finished difference Result 39 states and 43 transitions. [2023-04-02 23:30:26,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-04-02 23:30:26,079 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 35 [2023-04-02 23:30:26,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 23:30:26,079 INFO L225 Difference]: With dead ends: 39 [2023-04-02 23:30:26,079 INFO L226 Difference]: Without dead ends: 33 [2023-04-02 23:30:26,080 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 59 SyntacticMatches, 5 SemanticMatches, 26 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 17.2s TimeCoverageRelationStatistics Valid=86, Invalid=477, Unknown=5, NotChecked=188, Total=756 [2023-04-02 23:30:26,081 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 6 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 23:30:26,081 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 97 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 23:30:26,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2023-04-02 23:30:26,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2023-04-02 23:30:26,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 19 states have (on average 1.0526315789473684) internal successors, (20), 19 states have internal predecessors, (20), 9 states have call successors, (9), 6 states have call predecessors, (9), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-04-02 23:30:26,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 36 transitions. [2023-04-02 23:30:26,086 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 36 transitions. Word has length 35 [2023-04-02 23:30:26,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 23:30:26,086 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 36 transitions. [2023-04-02 23:30:26,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2023-04-02 23:30:26,086 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 36 transitions. [2023-04-02 23:30:26,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-04-02 23:30:26,087 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 23:30:26,087 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 23:30:26,096 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 23:30:26,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 23:30:26,289 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 23:30:26,289 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 23:30:26,289 INFO L85 PathProgramCache]: Analyzing trace with hash -170934026, now seen corresponding path program 2 times [2023-04-02 23:30:26,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 23:30:26,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63611129] [2023-04-02 23:30:26,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:30:26,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 23:30:26,300 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 23:30:26,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [225280497] [2023-04-02 23:30:26,300 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-04-02 23:30:26,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 23:30:26,300 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 23:30:26,301 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 23:30:26,303 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 23:30:26,362 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-04-02 23:30:26,362 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-02 23:30:26,363 INFO L262 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 27 conjunts are in the unsatisfiable core [2023-04-02 23:30:26,365 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 23:30:26,459 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 10 proven. 16 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-04-02 23:30:26,459 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 23:30:56,853 WARN L861 $PredicateComparison]: unable to prove that (or (not (= |c___VERIFIER_assert_#in~cond| 0)) (forall ((v_main_~y~0_BEFORE_CALL_40 Int) (v_main_~k~0_BEFORE_CALL_45 Int)) (or (= (+ v_main_~k~0_BEFORE_CALL_45 (* v_main_~y~0_BEFORE_CALL_40 v_main_~k~0_BEFORE_CALL_45)) (+ (* 2 v_main_~y~0_BEFORE_CALL_40) 1 (* v_main_~y~0_BEFORE_CALL_40 v_main_~y~0_BEFORE_CALL_40))) (= (mod (+ (* v_main_~y~0_BEFORE_CALL_40 v_main_~y~0_BEFORE_CALL_40 v_main_~y~0_BEFORE_CALL_40 v_main_~y~0_BEFORE_CALL_40 v_main_~y~0_BEFORE_CALL_40 6) (* 29 v_main_~y~0_BEFORE_CALL_40) (* v_main_~y~0_BEFORE_CALL_40 v_main_~y~0_BEFORE_CALL_40 v_main_~y~0_BEFORE_CALL_40 v_main_~y~0_BEFORE_CALL_40 15) (* v_main_~y~0_BEFORE_CALL_40 v_main_~y~0_BEFORE_CALL_40 v_main_~y~0_BEFORE_CALL_40 10)) 30) 0)))) is different from true [2023-04-02 23:31:15,565 WARN L861 $PredicateComparison]: unable to prove that (or (not (= |c___VERIFIER_assert_#in~cond| 0)) (forall ((v_main_~y~0_BEFORE_CALL_40 Int) (v_main_~k~0_BEFORE_CALL_45 Int)) (or (= (+ v_main_~k~0_BEFORE_CALL_45 (* v_main_~y~0_BEFORE_CALL_40 v_main_~k~0_BEFORE_CALL_45)) (+ (* 2 v_main_~y~0_BEFORE_CALL_40) 1 (* v_main_~y~0_BEFORE_CALL_40 v_main_~y~0_BEFORE_CALL_40))) (= (mod (+ (* v_main_~y~0_BEFORE_CALL_40 v_main_~y~0_BEFORE_CALL_40 v_main_~y~0_BEFORE_CALL_40 v_main_~y~0_BEFORE_CALL_40 v_main_~y~0_BEFORE_CALL_40 6) (* 29 v_main_~y~0_BEFORE_CALL_40) (* v_main_~y~0_BEFORE_CALL_40 v_main_~y~0_BEFORE_CALL_40 v_main_~y~0_BEFORE_CALL_40 v_main_~y~0_BEFORE_CALL_40 15) (* v_main_~y~0_BEFORE_CALL_40 v_main_~y~0_BEFORE_CALL_40 v_main_~y~0_BEFORE_CALL_40 10)) 30) 0))) (= c___VERIFIER_assert_~cond 0)) is different from true [2023-04-02 23:31:37,061 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 10 proven. 9 refuted. 6 times theorem prover too weak. 17 trivial. 1 not checked. [2023-04-02 23:31:37,062 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 23:31:37,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63611129] [2023-04-02 23:31:37,062 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 23:31:37,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [225280497] [2023-04-02 23:31:37,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [225280497] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 23:31:37,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [827924031] [2023-04-02 23:31:37,063 INFO L159 IcfgInterpreter]: Started Sifa with 21 locations of interest [2023-04-02 23:31:37,063 INFO L166 IcfgInterpreter]: Building call graph [2023-04-02 23:31:37,064 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-02 23:31:37,064 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-02 23:31:37,064 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-02 23:31:37,077 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 9 for LOIs [2023-04-02 23:31:37,289 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2023-04-02 23:31:37,291 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 13 for LOIs [2023-04-02 23:31:37,293 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2023-04-02 23:31:37,295 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-02 23:31:37,708 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1038#(and (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0))' at error location [2023-04-02 23:31:37,709 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-02 23:31:37,709 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-04-02 23:31:37,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 18 [2023-04-02 23:31:37,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930407236] [2023-04-02 23:31:37,709 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-04-02 23:31:37,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-04-02 23:31:37,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 23:31:37,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-04-02 23:31:37,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=598, Unknown=6, NotChecked=102, Total=812 [2023-04-02 23:31:37,710 INFO L87 Difference]: Start difference. First operand 33 states and 36 transitions. Second operand has 18 states, 16 states have (on average 1.9375) internal successors, (31), 16 states have internal predecessors, (31), 9 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (11), 9 states have call predecessors, (11), 9 states have call successors, (11) [2023-04-02 23:31:39,881 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse0 (* c_main_~y~0 c_main_~k~0)) (.cse1 (* c_main_~y~0 c_main_~y~0)) (.cse2 (+ c_main_~c~0 1))) (and (or (< c_main_~c~0 c_main_~k~0) (= .cse0 .cse1)) (or (< (+ 2 c_main_~c~0) c_main_~k~0) (not (= (mod (+ (* 15 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0) (* 29 c_main_~y~0) (* 10 c_main_~y~0 c_main_~y~0 c_main_~y~0) (* 6 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0)) 30) 0)) (<= c_main_~k~0 .cse2) (= (+ .cse0 (* 2 c_main_~k~0)) (+ (* 4 c_main_~y~0) 4 .cse1))) (or (= (+ .cse0 c_main_~k~0) (+ (* 2 c_main_~y~0) .cse1 1)) (<= c_main_~k~0 c_main_~c~0) (< .cse2 c_main_~k~0)))) is different from false [2023-04-02 23:32:01,492 WARN L223 SmtUtils]: Spent 10.03s on a formula simplification that was a NOOP. DAG size: 43 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-04-02 23:32:11,418 WARN L223 SmtUtils]: Spent 7.89s on a formula simplification that was a NOOP. DAG size: 33 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-04-02 23:32:13,441 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-04-02 23:32:44,830 WARN L223 SmtUtils]: Spent 11.00s on a formula simplification that was a NOOP. DAG size: 41 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-04-02 23:32:46,867 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse1 (* c_main_~y~0 c_main_~k~0)) (.cse2 (* c_main_~y~0 c_main_~y~0)) (.cse0 (+ c_main_~c~0 1))) (and (or (< (+ 2 c_main_~c~0) c_main_~k~0) (not (= (mod (+ (* 15 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0) (* 29 c_main_~y~0) (* 10 c_main_~y~0 c_main_~y~0 c_main_~y~0) (* 6 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0)) 30) 0)) (<= c_main_~k~0 .cse0) (= (+ .cse1 (* 2 c_main_~k~0)) (+ (* 4 c_main_~y~0) 4 .cse2))) (or (= (+ .cse1 c_main_~k~0) (+ (* 2 c_main_~y~0) .cse2 1)) (<= c_main_~k~0 c_main_~c~0) (< .cse0 c_main_~k~0)))) is different from false [2023-04-02 23:32:46,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 23:32:46,876 INFO L93 Difference]: Finished difference Result 55 states and 68 transitions. [2023-04-02 23:32:46,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-04-02 23:32:46,876 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 1.9375) internal successors, (31), 16 states have internal predecessors, (31), 9 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (11), 9 states have call predecessors, (11), 9 states have call successors, (11) Word has length 42 [2023-04-02 23:32:46,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 23:32:46,877 INFO L225 Difference]: With dead ends: 55 [2023-04-02 23:32:46,877 INFO L226 Difference]: Without dead ends: 45 [2023-04-02 23:32:46,877 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 95 SyntacticMatches, 5 SemanticMatches, 36 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 246 ImplicationChecksByTransitivity, 93.8s TimeCoverageRelationStatistics Valid=184, Invalid=933, Unknown=21, NotChecked=268, Total=1406 [2023-04-02 23:32:46,878 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 10 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 18 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 189 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-04-02 23:32:46,878 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 119 Invalid, 386 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 178 Invalid, 1 Unknown, 189 Unchecked, 2.2s Time] [2023-04-02 23:32:46,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2023-04-02 23:32:46,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2023-04-02 23:32:46,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 27 states have (on average 1.037037037037037) internal successors, (28), 27 states have internal predecessors, (28), 13 states have call successors, (13), 6 states have call predecessors, (13), 4 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-04-02 23:32:46,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 52 transitions. [2023-04-02 23:32:46,887 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 52 transitions. Word has length 42 [2023-04-02 23:32:46,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 23:32:46,888 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 52 transitions. [2023-04-02 23:32:46,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 1.9375) internal successors, (31), 16 states have internal predecessors, (31), 9 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (11), 9 states have call predecessors, (11), 9 states have call successors, (11) [2023-04-02 23:32:46,888 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 52 transitions. [2023-04-02 23:32:46,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-04-02 23:32:46,893 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 23:32:46,893 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 7, 7, 7, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 23:32:46,903 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 23:32:47,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 23:32:47,098 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 23:32:47,098 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 23:32:47,098 INFO L85 PathProgramCache]: Analyzing trace with hash -1653056138, now seen corresponding path program 3 times [2023-04-02 23:32:47,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 23:32:47,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550915070] [2023-04-02 23:32:47,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:32:47,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 23:32:47,111 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 23:32:47,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1271595660] [2023-04-02 23:32:47,111 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-04-02 23:32:47,111 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 23:32:47,111 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 23:32:47,112 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 23:32:47,114 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 23:32:47,154 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-04-02 23:32:47,154 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-02 23:32:47,155 INFO L262 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 40 conjunts are in the unsatisfiable core [2023-04-02 23:32:47,157 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 23:32:47,387 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 16 proven. 64 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2023-04-02 23:32:47,387 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 23:32:47,701 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 16 proven. 63 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2023-04-02 23:32:47,701 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 23:32:47,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550915070] [2023-04-02 23:32:47,701 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 23:32:47,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1271595660] [2023-04-02 23:32:47,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1271595660] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 23:32:47,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [365592312] [2023-04-02 23:32:47,703 INFO L159 IcfgInterpreter]: Started Sifa with 21 locations of interest [2023-04-02 23:32:47,703 INFO L166 IcfgInterpreter]: Building call graph [2023-04-02 23:32:47,703 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-02 23:32:47,704 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-02 23:32:47,704 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-02 23:32:47,714 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 9 for LOIs [2023-04-02 23:32:47,874 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2023-04-02 23:32:47,876 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 13 for LOIs [2023-04-02 23:32:47,878 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2023-04-02 23:32:47,880 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-02 23:32:48,265 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1669#(and (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0))' at error location [2023-04-02 23:32:48,265 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-02 23:32:48,265 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-04-02 23:32:48,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12] total 24 [2023-04-02 23:32:48,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886691543] [2023-04-02 23:32:48,266 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-04-02 23:32:48,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-04-02 23:32:48,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 23:32:48,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-04-02 23:32:48,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=1108, Unknown=0, NotChecked=0, Total=1260 [2023-04-02 23:32:48,268 INFO L87 Difference]: Start difference. First operand 45 states and 52 transitions. Second operand has 24 states, 21 states have (on average 2.0) internal successors, (42), 21 states have internal predecessors, (42), 18 states have call successors, (23), 3 states have call predecessors, (23), 2 states have return successors, (21), 18 states have call predecessors, (21), 18 states have call successors, (21) [2023-04-02 23:32:49,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 23:32:49,345 INFO L93 Difference]: Finished difference Result 75 states and 97 transitions. [2023-04-02 23:32:49,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-04-02 23:32:49,352 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 21 states have (on average 2.0) internal successors, (42), 21 states have internal predecessors, (42), 18 states have call successors, (23), 3 states have call predecessors, (23), 2 states have return successors, (21), 18 states have call predecessors, (21), 18 states have call successors, (21) Word has length 70 [2023-04-02 23:32:49,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 23:32:49,353 INFO L225 Difference]: With dead ends: 75 [2023-04-02 23:32:49,353 INFO L226 Difference]: Without dead ends: 67 [2023-04-02 23:32:49,353 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 173 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 632 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=387, Invalid=2265, Unknown=0, NotChecked=0, Total=2652 [2023-04-02 23:32:49,354 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 47 mSDsluCounter, 215 mSDsCounter, 0 mSdLazyCounter, 414 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 251 SdHoareTripleChecker+Invalid, 472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 414 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-02 23:32:49,354 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 251 Invalid, 472 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 414 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-02 23:32:49,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2023-04-02 23:32:49,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 66. [2023-04-02 23:32:49,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 41 states have (on average 1.024390243902439) internal successors, (42), 41 states have internal predecessors, (42), 20 states have call successors, (20), 6 states have call predecessors, (20), 4 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-04-02 23:32:49,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 80 transitions. [2023-04-02 23:32:49,382 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 80 transitions. Word has length 70 [2023-04-02 23:32:49,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 23:32:49,383 INFO L495 AbstractCegarLoop]: Abstraction has 66 states and 80 transitions. [2023-04-02 23:32:49,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 21 states have (on average 2.0) internal successors, (42), 21 states have internal predecessors, (42), 18 states have call successors, (23), 3 states have call predecessors, (23), 2 states have return successors, (21), 18 states have call predecessors, (21), 18 states have call successors, (21) [2023-04-02 23:32:49,383 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 80 transitions. [2023-04-02 23:32:49,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-04-02 23:32:49,387 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 23:32:49,387 INFO L195 NwaCegarLoop]: trace histogram [16, 15, 15, 14, 14, 14, 13, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 23:32:49,392 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 23:32:49,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 23:32:49,592 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 23:32:49,592 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 23:32:49,593 INFO L85 PathProgramCache]: Analyzing trace with hash 22559924, now seen corresponding path program 4 times [2023-04-02 23:32:49,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 23:32:49,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018476388] [2023-04-02 23:32:49,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:32:49,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 23:32:49,611 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 23:32:49,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [656332048] [2023-04-02 23:32:49,611 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-04-02 23:32:49,612 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 23:32:49,612 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 23:32:49,614 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 23:32:49,616 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 23:32:49,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:32:49,671 INFO L262 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 19 conjunts are in the unsatisfiable core [2023-04-02 23:32:49,673 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 23:32:49,949 INFO L134 CoverageAnalysis]: Checked inductivity of 725 backedges. 403 proven. 1 refuted. 0 times theorem prover too weak. 321 trivial. 0 not checked. [2023-04-02 23:32:49,949 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 23:32:50,165 INFO L134 CoverageAnalysis]: Checked inductivity of 725 backedges. 303 proven. 1 refuted. 0 times theorem prover too weak. 421 trivial. 0 not checked. [2023-04-02 23:32:50,166 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 23:32:50,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018476388] [2023-04-02 23:32:50,166 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 23:32:50,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [656332048] [2023-04-02 23:32:50,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [656332048] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 23:32:50,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [992136550] [2023-04-02 23:32:50,167 INFO L159 IcfgInterpreter]: Started Sifa with 21 locations of interest [2023-04-02 23:32:50,167 INFO L166 IcfgInterpreter]: Building call graph [2023-04-02 23:32:50,167 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-02 23:32:50,167 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-02 23:32:50,168 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-02 23:32:50,182 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 9 for LOIs [2023-04-02 23:32:50,398 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2023-04-02 23:32:50,400 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 13 for LOIs [2023-04-02 23:32:50,401 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2023-04-02 23:32:50,413 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-02 23:32:50,880 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2682#(and (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0))' at error location [2023-04-02 23:32:50,880 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-02 23:32:50,880 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-04-02 23:32:50,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 31 [2023-04-02 23:32:50,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124504539] [2023-04-02 23:32:50,881 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-04-02 23:32:50,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-04-02 23:32:50,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 23:32:50,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-04-02 23:32:50,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=429, Invalid=1377, Unknown=0, NotChecked=0, Total=1806 [2023-04-02 23:32:50,882 INFO L87 Difference]: Start difference. First operand 66 states and 80 transitions. Second operand has 31 states, 30 states have (on average 2.2666666666666666) internal successors, (68), 29 states have internal predecessors, (68), 30 states have call successors, (36), 2 states have call predecessors, (36), 3 states have return successors, (35), 30 states have call predecessors, (35), 30 states have call successors, (35) [2023-04-02 23:32:51,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 23:32:51,008 INFO L93 Difference]: Finished difference Result 71 states and 84 transitions. [2023-04-02 23:32:51,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-02 23:32:51,008 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 2.2666666666666666) internal successors, (68), 29 states have internal predecessors, (68), 30 states have call successors, (36), 2 states have call predecessors, (36), 3 states have return successors, (35), 30 states have call predecessors, (35), 30 states have call successors, (35) Word has length 119 [2023-04-02 23:32:51,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 23:32:51,009 INFO L225 Difference]: With dead ends: 71 [2023-04-02 23:32:51,009 INFO L226 Difference]: Without dead ends: 0 [2023-04-02 23:32:51,010 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 356 GetRequests, 312 SyntacticMatches, 3 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 776 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=429, Invalid=1377, Unknown=0, NotChecked=0, Total=1806 [2023-04-02 23:32:51,010 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 0 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 228 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 23:32:51,010 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 228 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 23:32:51,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-04-02 23:32:51,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-04-02 23:32:51,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-04-02 23:32:51,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-04-02 23:32:51,011 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 119 [2023-04-02 23:32:51,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 23:32:51,011 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-04-02 23:32:51,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 2.2666666666666666) internal successors, (68), 29 states have internal predecessors, (68), 30 states have call successors, (36), 2 states have call predecessors, (36), 3 states have return successors, (35), 30 states have call predecessors, (35), 30 states have call successors, (35) [2023-04-02 23:32:51,011 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-04-02 23:32:51,011 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-04-02 23:32:51,013 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-04-02 23:32:51,036 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-04-02 23:32:51,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 23:32:51,222 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-04-02 23:32:54,456 INFO L899 garLoopResultBuilder]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2023-04-02 23:32:54,456 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line 3) no Hoare annotation was computed. [2023-04-02 23:32:54,456 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 6 8) the Hoare annotation is: true [2023-04-02 23:32:54,456 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 6 8) no Hoare annotation was computed. [2023-04-02 23:32:54,456 INFO L895 garLoopResultBuilder]: At program point L29(line 29) the Hoare annotation is: (let ((.cse1 (< 5 main_~k~0)) (.cse6 (<= 0 main_~k~0)) (.cse0 (<= main_~k~0 10))) (or (and (= main_~y~0 6) .cse0 (= 2275 main_~x~0) (<= 6 main_~c~0) .cse1 (<= main_~c~0 6)) (and (= main_~x~0 354) .cse0 (or (= main_~k~0 4) (< 4 main_~k~0)) (= main_~y~0 4) (= main_~c~0 4)) (and (= main_~y~0 2) .cse0 (or (= main_~k~0 2) (< 2 main_~k~0)) (= main_~c~0 2) (= main_~x~0 17)) (let ((.cse3 (+ main_~c~0 2)) (.cse2 (+ main_~c~0 1)) (.cse4 (* main_~y~0 main_~y~0)) (.cse5 (* main_~k~0 main_~y~0))) (and (or (<= main_~k~0 .cse2) (< .cse3 main_~k~0) (= (+ 4 .cse4 (* main_~y~0 4)) (+ (* main_~k~0 2) .cse5))) .cse0 .cse6 (<= 7 main_~c~0) (or (= (+ (* main_~k~0 3) .cse5) (+ 9 (* main_~y~0 6) .cse4)) (<= main_~k~0 .cse3)) (or (= (+ main_~k~0 .cse5) (+ (* main_~y~0 2) .cse4 1)) (<= main_~k~0 main_~c~0) (< .cse2 main_~k~0)) (= (+ main_~y~0 (* 30 main_~x~0)) (+ (* (* main_~y~0 main_~y~0 main_~y~0 main_~y~0) 15) (* 6 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0)) (* (* main_~y~0 main_~y~0 main_~y~0) 10))) (or (< main_~c~0 main_~k~0) (= .cse4 .cse5)))) (and .cse0 (or (= 5 main_~k~0) .cse1) (= main_~x~0 979) (= 5 main_~c~0) (= 5 main_~y~0)) (and .cse0 (= main_~y~0 1) (= main_~x~0 1) (< 0 main_~k~0) (= main_~c~0 1)) (and (= main_~x~0 0) .cse0 .cse6 (= main_~c~0 0) (= main_~y~0 0)) (and (= 98 main_~x~0) .cse0 (or (= main_~k~0 3) (< 3 main_~k~0)) (= main_~y~0 3) (= main_~c~0 3)))) [2023-04-02 23:32:54,456 INFO L899 garLoopResultBuilder]: For program point L29-1(lines 28 37) no Hoare annotation was computed. [2023-04-02 23:32:54,457 INFO L895 garLoopResultBuilder]: At program point L28-2(lines 28 37) the Hoare annotation is: (let ((.cse1 (< 5 main_~k~0)) (.cse6 (<= 0 main_~k~0)) (.cse0 (<= main_~k~0 10))) (or (and (= main_~y~0 6) .cse0 (= 2275 main_~x~0) (<= 6 main_~c~0) .cse1 (<= main_~c~0 6)) (and (= main_~x~0 354) .cse0 (or (= main_~k~0 4) (< 4 main_~k~0)) (= main_~y~0 4) (= main_~c~0 4)) (and (= main_~y~0 2) .cse0 (or (= main_~k~0 2) (< 2 main_~k~0)) (= main_~c~0 2) (= main_~x~0 17)) (let ((.cse3 (+ main_~c~0 2)) (.cse2 (+ main_~c~0 1)) (.cse4 (* main_~y~0 main_~y~0)) (.cse5 (* main_~k~0 main_~y~0))) (and (or (<= main_~k~0 .cse2) (< .cse3 main_~k~0) (= (+ 4 .cse4 (* main_~y~0 4)) (+ (* main_~k~0 2) .cse5))) .cse0 .cse6 (<= 7 main_~c~0) (or (= (+ (* main_~k~0 3) .cse5) (+ 9 (* main_~y~0 6) .cse4)) (<= main_~k~0 .cse3)) (or (= (+ main_~k~0 .cse5) (+ (* main_~y~0 2) .cse4 1)) (<= main_~k~0 main_~c~0) (< .cse2 main_~k~0)) (= (+ main_~y~0 (* 30 main_~x~0)) (+ (* (* main_~y~0 main_~y~0 main_~y~0 main_~y~0) 15) (* 6 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0)) (* (* main_~y~0 main_~y~0 main_~y~0) 10))) (or (< main_~c~0 main_~k~0) (= .cse4 .cse5)))) (and .cse0 (or (= 5 main_~k~0) .cse1) (= main_~x~0 979) (= 5 main_~c~0) (= 5 main_~y~0)) (and .cse0 (= main_~y~0 1) (= main_~x~0 1) (< 0 main_~k~0) (= main_~c~0 1)) (and (= main_~x~0 0) .cse0 .cse6 (= main_~c~0 0) (= main_~y~0 0)) (and (= 98 main_~x~0) .cse0 (or (= main_~k~0 3) (< 3 main_~k~0)) (= main_~y~0 3) (= main_~c~0 3)))) [2023-04-02 23:32:54,457 INFO L895 garLoopResultBuilder]: At program point L28-3(lines 28 37) the Hoare annotation is: (and (= (* main_~y~0 main_~y~0) (* main_~k~0 main_~y~0)) (= (+ main_~y~0 (* 30 main_~x~0)) (+ (* (* main_~y~0 main_~y~0 main_~y~0 main_~y~0) 15) (* 6 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0)) (* (* main_~y~0 main_~y~0 main_~y~0) 10)))) [2023-04-02 23:32:54,457 INFO L899 garLoopResultBuilder]: For program point mainEXIT(lines 17 42) no Hoare annotation was computed. [2023-04-02 23:32:54,457 INFO L899 garLoopResultBuilder]: For program point L22(line 22) no Hoare annotation was computed. [2023-04-02 23:32:54,457 INFO L902 garLoopResultBuilder]: At program point L21(line 21) the Hoare annotation is: true [2023-04-02 23:32:54,457 INFO L895 garLoopResultBuilder]: At program point L21-1(line 21) the Hoare annotation is: (and (<= main_~k~0 10) (<= 0 main_~k~0)) [2023-04-02 23:32:54,457 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 17 42) the Hoare annotation is: true [2023-04-02 23:32:54,457 INFO L899 garLoopResultBuilder]: For program point L40(line 40) no Hoare annotation was computed. [2023-04-02 23:32:54,457 INFO L895 garLoopResultBuilder]: At program point L39(line 39) the Hoare annotation is: (and (= (* main_~y~0 main_~y~0) (* main_~k~0 main_~y~0)) (= (+ main_~y~0 (* 30 main_~x~0)) (+ (* (* main_~y~0 main_~y~0 main_~y~0 main_~y~0) 15) (* 6 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0)) (* (* main_~y~0 main_~y~0 main_~y~0) 10)))) [2023-04-02 23:32:54,457 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(line -1) the Hoare annotation is: true [2023-04-02 23:32:54,457 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2023-04-02 23:32:54,457 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-04-02 23:32:54,457 INFO L902 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: true [2023-04-02 23:32:54,457 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2023-04-02 23:32:54,457 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(line -1) the Hoare annotation is: true [2023-04-02 23:32:54,458 INFO L899 garLoopResultBuilder]: For program point L11(lines 11 12) no Hoare annotation was computed. [2023-04-02 23:32:54,458 INFO L899 garLoopResultBuilder]: For program point L10(lines 10 13) no Hoare annotation was computed. [2023-04-02 23:32:54,458 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 9 15) no Hoare annotation was computed. [2023-04-02 23:32:54,458 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 9 15) the Hoare annotation is: true [2023-04-02 23:32:54,458 INFO L899 garLoopResultBuilder]: For program point L10-2(lines 9 15) no Hoare annotation was computed. [2023-04-02 23:32:54,458 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2023-04-02 23:32:54,460 INFO L445 BasicCegarLoop]: Path program histogram: [4, 1, 1] [2023-04-02 23:32:54,461 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-04-02 23:32:54,472 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.04 11:32:54 BoogieIcfgContainer [2023-04-02 23:32:54,472 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-04-02 23:32:54,472 INFO L158 Benchmark]: Toolchain (without parser) took 217848.13ms. Allocated memory was 211.8MB in the beginning and 315.6MB in the end (delta: 103.8MB). Free memory was 162.0MB in the beginning and 230.0MB in the end (delta: -68.0MB). Peak memory consumption was 170.2MB. Max. memory is 8.0GB. [2023-04-02 23:32:54,472 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 211.8MB. Free memory is still 160.1MB. There was no memory consumed. Max. memory is 8.0GB. [2023-04-02 23:32:54,472 INFO L158 Benchmark]: CACSL2BoogieTranslator took 133.37ms. Allocated memory is still 211.8MB. Free memory was 162.0MB in the beginning and 151.5MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-04-02 23:32:54,473 INFO L158 Benchmark]: Boogie Preprocessor took 18.52ms. Allocated memory is still 211.8MB. Free memory was 151.5MB in the beginning and 150.1MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-04-02 23:32:54,473 INFO L158 Benchmark]: RCFGBuilder took 255.89ms. Allocated memory is still 211.8MB. Free memory was 150.1MB in the beginning and 137.9MB in the end (delta: 12.2MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2023-04-02 23:32:54,473 INFO L158 Benchmark]: TraceAbstraction took 217437.22ms. Allocated memory was 211.8MB in the beginning and 315.6MB in the end (delta: 103.8MB). Free memory was 137.2MB in the beginning and 230.0MB in the end (delta: -92.8MB). Peak memory consumption was 145.0MB. Max. memory is 8.0GB. [2023-04-02 23:32:54,474 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 211.8MB. Free memory is still 160.1MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 133.37ms. Allocated memory is still 211.8MB. Free memory was 162.0MB in the beginning and 151.5MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 18.52ms. Allocated memory is still 211.8MB. Free memory was 151.5MB in the beginning and 150.1MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 255.89ms. Allocated memory is still 211.8MB. Free memory was 150.1MB in the beginning and 137.9MB in the end (delta: 12.2MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * TraceAbstraction took 217437.22ms. Allocated memory was 211.8MB in the beginning and 315.6MB in the end (delta: 103.8MB). Free memory was 137.2MB in the beginning and 230.0MB in the end (delta: -92.8MB). Peak memory consumption was 145.0MB. 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: 12]: 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, 27 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 217.3s, OverallIterations: 6, TraceHistogramMax: 16, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 70.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 3.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1 mSolverCounterUnknown, 93 SdHoareTripleChecker+Valid, 2.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 86 mSDsluCounter, 857 SdHoareTripleChecker+Invalid, 2.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 189 IncrementalHoareTripleChecker+Unchecked, 705 mSDsCounter, 89 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1019 IncrementalHoareTripleChecker+Invalid, 1298 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 89 mSolverCounterUnsat, 152 mSDtfsCounter, 1019 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 897 GetRequests, 699 SyntacticMatches, 17 SemanticMatches, 181 ConstructedPredicates, 8 IntricatePredicates, 0 DeprecatedPredicates, 1887 ImplicationChecksByTransitivity, 113.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=66occurred in iteration=5, InterpolantAutomatonStates: 80, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 6 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 12 LocationsWithAnnotation, 45 PreInvPairs, 81 NumberOfFragments, 592 HoareAnnotationTreeSize, 45 FomulaSimplifications, 1092 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 12 FomulaSimplificationsInter, 2156 FormulaSimplificationTreeSizeReductionInter, 3.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 137.9s InterpolantComputationTime, 307 NumberOfCodeBlocks, 296 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 552 ConstructedInterpolants, 3 QuantifiedInterpolants, 2665 SizeOfPredicates, 18 NumberOfNonLiveVariables, 848 ConjunctsInSsa, 140 ConjunctsInUnsatCore, 10 InterpolantComputations, 1 PerfectInterpolantSequences, 1790/1959 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 28]: Loop Invariant Derived loop invariant: (((((((((((y == 6 && k <= 10) && 2275 == x) && 6 <= c) && 5 < k) && c <= 6) || ((((x == 354 && k <= 10) && (k == 4 || 4 < k)) && y == 4) && c == 4)) || ((((y == 2 && k <= 10) && (k == 2 || 2 < k)) && c == 2) && x == 17)) || (((((((((k <= c + 1 || c + 2 < k) || 4 + y * y + y * 4 == k * 2 + k * y) && k <= 10) && 0 <= k) && 7 <= c) && (k * 3 + k * y == 9 + y * 6 + y * y || k <= c + 2)) && ((k + k * y == y * 2 + y * y + 1 || k <= c) || c + 1 < k)) && y + 30 * x == y * y * y * y * 15 + 6 * (y * y * y * y * y) + y * y * y * 10) && (c < k || y * y == k * y))) || ((((k <= 10 && (5 == k || 5 < k)) && x == 979) && 5 == c) && 5 == y)) || ((((k <= 10 && y == 1) && x == 1) && 0 < k) && c == 1)) || ((((x == 0 && k <= 10) && 0 <= k) && c == 0) && y == 0)) || ((((98 == x && k <= 10) && (k == 3 || 3 < k)) && y == 3) && c == 3) RESULT: Ultimate proved your program to be correct! [2023-04-02 23:32:54,510 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...