/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/hard2_valuebound1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 05:23:28,294 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 05:23:28,296 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 05:23:28,319 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-01 05:23:28,320 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-01 05:23:28,320 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-01 05:23:28,322 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-01 05:23:28,323 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-01 05:23:28,325 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-01 05:23:28,325 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-01 05:23:28,326 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-01 05:23:28,327 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-01 05:23:28,328 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-01 05:23:28,329 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-01 05:23:28,329 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-01 05:23:28,331 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-01 05:23:28,331 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-01 05:23:28,332 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-01 05:23:28,333 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-01 05:23:28,335 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-01 05:23:28,336 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-01 05:23:28,343 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-01 05:23:28,344 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-01 05:23:28,345 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-01 05:23:28,348 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-01 05:23:28,348 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-01 05:23:28,348 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-01 05:23:28,349 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-01 05:23:28,349 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-01 05:23:28,350 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-01 05:23:28,350 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-01 05:23:28,351 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-01 05:23:28,351 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-01 05:23:28,352 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-01 05:23:28,357 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-01 05:23:28,358 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-01 05:23:28,359 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-01 05:23:28,359 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-01 05:23:28,359 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-01 05:23:28,362 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-01 05:23:28,362 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-01 05:23:28,363 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf [2023-04-01 05:23:28,392 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 05:23:28,392 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 05:23:28,392 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 05:23:28,393 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 05:23:28,393 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 05:23:28,393 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 05:23:28,393 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-01 05:23:28,393 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-01 05:23:28,394 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-01 05:23:28,394 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-01 05:23:28,394 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-01 05:23:28,394 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-01 05:23:28,394 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-01 05:23:28,394 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-01 05:23:28,394 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-01 05:23:28,394 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-01 05:23:28,395 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-01 05:23:28,395 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-01 05:23:28,395 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 05:23:28,395 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 05:23:28,395 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 05:23:28,395 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 05:23:28,396 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 05:23:28,396 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 05:23:28,396 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 05:23:28,396 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 05:23:28,396 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 05:23:28,396 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 05:23:28,396 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 05:23:28,396 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 05:23:28,397 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 05:23:28,397 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 05:23:28,397 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 05:23:28,397 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 05:23:28,397 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-01 05:23:28,397 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 05:23:28,397 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 05:23:28,397 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-01 05:23:28,398 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 05:23:28,398 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 05:23:28,398 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-01 05:23:28,398 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> OctagonDomain [2023-04-01 05:23:28,579 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 05:23:28,595 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 05:23:28,597 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 05:23:28,598 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 05:23:28,599 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 05:23:28,599 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound1.c [2023-04-01 05:23:29,731 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 05:23:29,873 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 05:23:29,873 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound1.c [2023-04-01 05:23:29,878 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b8479c6b3/9f3dbc6be25b411886c81a5edd03a61c/FLAG22e63bec1 [2023-04-01 05:23:29,890 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b8479c6b3/9f3dbc6be25b411886c81a5edd03a61c [2023-04-01 05:23:29,892 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 05:23:29,893 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 05:23:29,898 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 05:23:29,898 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 05:23:29,901 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 05:23:29,901 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 05:23:29" (1/1) ... [2023-04-01 05:23:29,903 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36700a28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:23:29, skipping insertion in model container [2023-04-01 05:23:29,903 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 05:23:29" (1/1) ... [2023-04-01 05:23:29,910 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 05:23:29,925 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 05:23:30,031 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/hard2_valuebound1.c[526,539] [2023-04-01 05:23:30,043 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 05:23:30,051 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 05:23:30,062 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/hard2_valuebound1.c[526,539] [2023-04-01 05:23:30,067 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 05:23:30,076 INFO L208 MainTranslator]: Completed translation [2023-04-01 05:23:30,077 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:23:30 WrapperNode [2023-04-01 05:23:30,077 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 05:23:30,077 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 05:23:30,077 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 05:23:30,078 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 05:23:30,085 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:23:30" (1/1) ... [2023-04-01 05:23:30,085 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:23:30" (1/1) ... [2023-04-01 05:23:30,093 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:23:30" (1/1) ... [2023-04-01 05:23:30,093 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:23:30" (1/1) ... [2023-04-01 05:23:30,100 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:23:30" (1/1) ... [2023-04-01 05:23:30,104 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:23:30" (1/1) ... [2023-04-01 05:23:30,105 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:23:30" (1/1) ... [2023-04-01 05:23:30,105 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:23:30" (1/1) ... [2023-04-01 05:23:30,107 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 05:23:30,107 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 05:23:30,108 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 05:23:30,108 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 05:23:30,108 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:23:30" (1/1) ... [2023-04-01 05:23:30,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 05:23:30,126 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 05:23:30,138 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-04-01 05:23:30,142 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-04-01 05:23:30,170 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 05:23:30,171 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 05:23:30,171 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 05:23:30,171 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-01 05:23:30,171 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-04-01 05:23:30,171 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 05:23:30,171 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 05:23:30,171 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 05:23:30,172 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 05:23:30,172 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 05:23:30,172 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-01 05:23:30,172 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-01 05:23:30,172 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-04-01 05:23:30,172 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 05:23:30,172 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 05:23:30,173 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 05:23:30,173 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 05:23:30,173 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 05:23:30,173 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 05:23:30,173 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 05:23:30,232 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 05:23:30,235 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 05:23:30,359 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 05:23:30,392 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 05:23:30,393 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-04-01 05:23:30,395 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 05:23:30 BoogieIcfgContainer [2023-04-01 05:23:30,395 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 05:23:30,397 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 05:23:30,397 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 05:23:30,400 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 05:23:30,400 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 05:23:29" (1/3) ... [2023-04-01 05:23:30,400 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d0ff4be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 05:23:30, skipping insertion in model container [2023-04-01 05:23:30,400 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:23:30" (2/3) ... [2023-04-01 05:23:30,401 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d0ff4be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 05:23:30, skipping insertion in model container [2023-04-01 05:23:30,401 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 05:23:30" (3/3) ... [2023-04-01 05:23:30,402 INFO L112 eAbstractionObserver]: Analyzing ICFG hard2_valuebound1.c [2023-04-01 05:23:30,414 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 05:23:30,414 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 05:23:30,453 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 05:23:30,459 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;@617fa11, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-01 05:23:30,459 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 05:23:30,463 INFO L276 IsEmpty]: Start isEmpty. Operand has 30 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 15 states have internal predecessors, (20), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-04-01 05:23:30,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-04-01 05:23:30,469 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 05:23:30,470 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 05:23:30,470 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 05:23:30,475 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 05:23:30,475 INFO L85 PathProgramCache]: Analyzing trace with hash 1934292817, now seen corresponding path program 1 times [2023-04-01 05:23:30,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 05:23:30,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855726606] [2023-04-01 05:23:30,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 05:23:30,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 05:23:30,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 05:23:30,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 05:23:30,782 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 05:23:30,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855726606] [2023-04-01 05:23:30,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855726606] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 05:23:30,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 05:23:30,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-01 05:23:30,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749592785] [2023-04-01 05:23:30,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 05:23:30,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 05:23:30,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 05:23:30,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 05:23:30,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-01 05:23:30,839 INFO L87 Difference]: Start difference. First operand has 30 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 15 states have internal predecessors, (20), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-04-01 05:23:30,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 05:23:30,999 INFO L93 Difference]: Finished difference Result 63 states and 100 transitions. [2023-04-01 05:23:31,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-04-01 05:23:31,002 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 14 [2023-04-01 05:23:31,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 05:23:31,007 INFO L225 Difference]: With dead ends: 63 [2023-04-01 05:23:31,007 INFO L226 Difference]: Without dead ends: 36 [2023-04-01 05:23:31,010 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-01 05:23:31,014 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 11 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 05:23:31,015 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 99 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 05:23:31,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2023-04-01 05:23:31,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 30. [2023-04-01 05:23:31,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 15 states have (on average 1.2) internal successors, (18), 16 states have internal predecessors, (18), 10 states have call successors, (10), 5 states have call predecessors, (10), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-04-01 05:23:31,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 36 transitions. [2023-04-01 05:23:31,048 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 36 transitions. Word has length 14 [2023-04-01 05:23:31,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 05:23:31,048 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 36 transitions. [2023-04-01 05:23:31,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-04-01 05:23:31,049 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 36 transitions. [2023-04-01 05:23:31,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-04-01 05:23:31,049 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 05:23:31,049 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 05:23:31,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 05:23:31,050 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 05:23:31,051 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 05:23:31,051 INFO L85 PathProgramCache]: Analyzing trace with hash 667189618, now seen corresponding path program 1 times [2023-04-01 05:23:31,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 05:23:31,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766103858] [2023-04-01 05:23:31,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 05:23:31,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 05:23:31,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 05:23:31,210 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 05:23:31,210 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 05:23:31,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766103858] [2023-04-01 05:23:31,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766103858] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 05:23:31,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 05:23:31,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-01 05:23:31,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425814834] [2023-04-01 05:23:31,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 05:23:31,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 05:23:31,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 05:23:31,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 05:23:31,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-01 05:23:31,215 INFO L87 Difference]: Start difference. First operand 30 states and 36 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-04-01 05:23:31,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 05:23:31,296 INFO L93 Difference]: Finished difference Result 42 states and 51 transitions. [2023-04-01 05:23:31,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-04-01 05:23:31,298 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 19 [2023-04-01 05:23:31,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 05:23:31,299 INFO L225 Difference]: With dead ends: 42 [2023-04-01 05:23:31,299 INFO L226 Difference]: Without dead ends: 40 [2023-04-01 05:23:31,300 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-01 05:23:31,301 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 8 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-01 05:23:31,301 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 86 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-01 05:23:31,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2023-04-01 05:23:31,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 34. [2023-04-01 05:23:31,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 19 states have internal predecessors, (21), 10 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-04-01 05:23:31,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 39 transitions. [2023-04-01 05:23:31,314 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 39 transitions. Word has length 19 [2023-04-01 05:23:31,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 05:23:31,314 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 39 transitions. [2023-04-01 05:23:31,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-04-01 05:23:31,314 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 39 transitions. [2023-04-01 05:23:31,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-04-01 05:23:31,315 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 05:23:31,315 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 05:23:31,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-01 05:23:31,316 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 05:23:31,316 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 05:23:31,317 INFO L85 PathProgramCache]: Analyzing trace with hash 203307953, now seen corresponding path program 1 times [2023-04-01 05:23:31,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 05:23:31,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556633189] [2023-04-01 05:23:31,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 05:23:31,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 05:23:31,331 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-01 05:23:31,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [599252808] [2023-04-01 05:23:31,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 05:23:31,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 05:23:31,332 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 05:23:31,334 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 05:23:31,335 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-04-01 05:23:31,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 05:23:31,388 INFO L262 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 19 conjunts are in the unsatisfiable core [2023-04-01 05:23:31,393 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 05:23:31,532 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-04-01 05:23:31,533 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 05:23:31,683 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-04-01 05:23:31,684 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 05:23:31,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556633189] [2023-04-01 05:23:31,685 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-01 05:23:31,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [599252808] [2023-04-01 05:23:31,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [599252808] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 05:23:31,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1580629990] [2023-04-01 05:23:31,716 INFO L159 IcfgInterpreter]: Started Sifa with 19 locations of interest [2023-04-01 05:23:31,716 INFO L166 IcfgInterpreter]: Building call graph [2023-04-01 05:23:31,719 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-01 05:23:31,729 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-01 05:23:31,730 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-01 05:23:31,841 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 9 for LOIs [2023-04-01 05:23:32,076 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 11 for LOIs [2023-04-01 05:23:32,083 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 28 for LOIs [2023-04-01 05:23:32,098 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2023-04-01 05:23:32,109 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-01 05:23:32,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1580629990] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 05:23:32,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-04-01 05:23:32,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [8, 7] total 22 [2023-04-01 05:23:32,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967480018] [2023-04-01 05:23:32,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 05:23:32,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-01 05:23:32,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 05:23:32,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-01 05:23:32,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=384, Unknown=0, NotChecked=0, Total=462 [2023-04-01 05:23:32,402 INFO L87 Difference]: Start difference. First operand 34 states and 39 transitions. Second operand has 12 states, 8 states have (on average 1.25) internal successors, (10), 6 states have internal predecessors, (10), 4 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-04-01 05:23:33,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 05:23:33,589 INFO L93 Difference]: Finished difference Result 69 states and 83 transitions. [2023-04-01 05:23:33,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-04-01 05:23:33,590 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 8 states have (on average 1.25) internal successors, (10), 6 states have internal predecessors, (10), 4 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 24 [2023-04-01 05:23:33,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 05:23:33,591 INFO L225 Difference]: With dead ends: 69 [2023-04-01 05:23:33,591 INFO L226 Difference]: Without dead ends: 51 [2023-04-01 05:23:33,592 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=155, Invalid=715, Unknown=0, NotChecked=0, Total=870 [2023-04-01 05:23:33,593 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 63 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-01 05:23:33,593 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 5 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-01 05:23:33,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2023-04-01 05:23:33,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2023-04-01 05:23:33,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 29 states have (on average 1.103448275862069) internal successors, (32), 30 states have internal predecessors, (32), 13 states have call successors, (13), 9 states have call predecessors, (13), 8 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-04-01 05:23:33,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 56 transitions. [2023-04-01 05:23:33,612 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 56 transitions. Word has length 24 [2023-04-01 05:23:33,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 05:23:33,613 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 56 transitions. [2023-04-01 05:23:33,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 8 states have (on average 1.25) internal successors, (10), 6 states have internal predecessors, (10), 4 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-04-01 05:23:33,613 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 56 transitions. [2023-04-01 05:23:33,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-04-01 05:23:33,614 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 05:23:33,614 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 05:23:33,623 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-04-01 05:23:33,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 05:23:33,821 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 05:23:33,821 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 05:23:33,821 INFO L85 PathProgramCache]: Analyzing trace with hash 856949456, now seen corresponding path program 1 times [2023-04-01 05:23:33,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 05:23:33,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504586735] [2023-04-01 05:23:33,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 05:23:33,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 05:23:33,834 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-01 05:23:33,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [982337201] [2023-04-01 05:23:33,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 05:23:33,835 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 05:23:33,835 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 05:23:33,845 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 05:23:33,847 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-04-01 05:23:33,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 05:23:33,887 INFO L262 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 23 conjunts are in the unsatisfiable core [2023-04-01 05:23:33,889 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 05:23:33,988 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 9 proven. 17 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-04-01 05:23:33,988 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 05:23:34,087 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 11 proven. 13 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-04-01 05:23:34,087 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 05:23:34,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504586735] [2023-04-01 05:23:34,087 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-01 05:23:34,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [982337201] [2023-04-01 05:23:34,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [982337201] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 05:23:34,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1398347945] [2023-04-01 05:23:34,090 INFO L159 IcfgInterpreter]: Started Sifa with 20 locations of interest [2023-04-01 05:23:34,090 INFO L166 IcfgInterpreter]: Building call graph [2023-04-01 05:23:34,090 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-01 05:23:34,090 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-01 05:23:34,091 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-01 05:23:34,118 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 9 for LOIs [2023-04-01 05:23:34,828 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2023-04-01 05:23:34,830 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 28 for LOIs [2023-04-01 05:23:34,837 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2023-04-01 05:23:34,843 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-01 05:23:35,287 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '922#(and (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0))' at error location [2023-04-01 05:23:35,287 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-01 05:23:35,287 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-04-01 05:23:35,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 13 [2023-04-01 05:23:35,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781305458] [2023-04-01 05:23:35,288 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-04-01 05:23:35,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-04-01 05:23:35,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 05:23:35,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-04-01 05:23:35,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=472, Unknown=0, NotChecked=0, Total=552 [2023-04-01 05:23:35,289 INFO L87 Difference]: Start difference. First operand 51 states and 56 transitions. Second operand has 13 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 11 states have internal predecessors, (24), 6 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (11), 4 states have call predecessors, (11), 6 states have call successors, (11) [2023-04-01 05:23:35,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 05:23:35,504 INFO L93 Difference]: Finished difference Result 85 states and 106 transitions. [2023-04-01 05:23:35,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-04-01 05:23:35,507 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 11 states have internal predecessors, (24), 6 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (11), 4 states have call predecessors, (11), 6 states have call successors, (11) Word has length 41 [2023-04-01 05:23:35,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 05:23:35,509 INFO L225 Difference]: With dead ends: 85 [2023-04-01 05:23:35,509 INFO L226 Difference]: Without dead ends: 72 [2023-04-01 05:23:35,510 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 96 SyntacticMatches, 5 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=89, Invalid=511, Unknown=0, NotChecked=0, Total=600 [2023-04-01 05:23:35,511 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 24 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 05:23:35,511 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 119 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 05:23:35,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2023-04-01 05:23:35,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2023-04-01 05:23:35,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 39 states have (on average 1.1025641025641026) internal successors, (43), 42 states have internal predecessors, (43), 23 states have call successors, (23), 10 states have call predecessors, (23), 9 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2023-04-01 05:23:35,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 86 transitions. [2023-04-01 05:23:35,538 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 86 transitions. Word has length 41 [2023-04-01 05:23:35,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 05:23:35,539 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 86 transitions. [2023-04-01 05:23:35,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 11 states have internal predecessors, (24), 6 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (11), 4 states have call predecessors, (11), 6 states have call successors, (11) [2023-04-01 05:23:35,539 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 86 transitions. [2023-04-01 05:23:35,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-04-01 05:23:35,540 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 05:23:35,540 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 05:23:35,552 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-04-01 05:23:35,746 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,SelfDestructingSolverStorable3 [2023-04-01 05:23:35,747 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 05:23:35,748 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 05:23:35,748 INFO L85 PathProgramCache]: Analyzing trace with hash -1871718208, now seen corresponding path program 1 times [2023-04-01 05:23:35,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 05:23:35,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408946758] [2023-04-01 05:23:35,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 05:23:35,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 05:23:35,778 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-01 05:23:35,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1542934143] [2023-04-01 05:23:35,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 05:23:35,779 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 05:23:35,779 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 05:23:35,780 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 05:23:35,804 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-04-01 05:23:35,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 05:23:35,837 INFO L262 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 17 conjunts are in the unsatisfiable core [2023-04-01 05:23:35,839 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 05:23:35,916 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 11 proven. 16 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2023-04-01 05:23:35,916 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 05:23:36,027 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 13 proven. 16 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2023-04-01 05:23:36,027 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 05:23:36,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408946758] [2023-04-01 05:23:36,027 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-01 05:23:36,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1542934143] [2023-04-01 05:23:36,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1542934143] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 05:23:36,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1622149676] [2023-04-01 05:23:36,031 INFO L159 IcfgInterpreter]: Started Sifa with 22 locations of interest [2023-04-01 05:23:36,031 INFO L166 IcfgInterpreter]: Building call graph [2023-04-01 05:23:36,032 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-01 05:23:36,032 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-01 05:23:36,032 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-01 05:23:36,059 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 9 for LOIs [2023-04-01 05:23:36,606 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2023-04-01 05:23:36,609 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 28 for LOIs [2023-04-01 05:23:36,616 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2023-04-01 05:23:36,625 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-01 05:23:37,091 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1476#(and (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0))' at error location [2023-04-01 05:23:37,091 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-01 05:23:37,091 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-04-01 05:23:37,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2023-04-01 05:23:37,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599169568] [2023-04-01 05:23:37,092 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-04-01 05:23:37,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-01 05:23:37,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 05:23:37,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-01 05:23:37,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=421, Unknown=0, NotChecked=0, Total=506 [2023-04-01 05:23:37,094 INFO L87 Difference]: Start difference. First operand 72 states and 86 transitions. Second operand has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 10 states have internal predecessors, (27), 4 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (10), 3 states have call predecessors, (10), 4 states have call successors, (10) [2023-04-01 05:23:37,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 05:23:37,222 INFO L93 Difference]: Finished difference Result 81 states and 96 transitions. [2023-04-01 05:23:37,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-04-01 05:23:37,223 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 10 states have internal predecessors, (27), 4 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (10), 3 states have call predecessors, (10), 4 states have call successors, (10) Word has length 48 [2023-04-01 05:23:37,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 05:23:37,224 INFO L225 Difference]: With dead ends: 81 [2023-04-01 05:23:37,224 INFO L226 Difference]: Without dead ends: 79 [2023-04-01 05:23:37,224 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 118 SyntacticMatches, 5 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=94, Invalid=458, Unknown=0, NotChecked=0, Total=552 [2023-04-01 05:23:37,225 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 19 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 05:23:37,225 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 73 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 05:23:37,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2023-04-01 05:23:37,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 78. [2023-04-01 05:23:37,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 43 states have (on average 1.1162790697674418) internal successors, (48), 46 states have internal predecessors, (48), 24 states have call successors, (24), 11 states have call predecessors, (24), 10 states have return successors, (21), 20 states have call predecessors, (21), 21 states have call successors, (21) [2023-04-01 05:23:37,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 93 transitions. [2023-04-01 05:23:37,247 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 93 transitions. Word has length 48 [2023-04-01 05:23:37,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 05:23:37,248 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 93 transitions. [2023-04-01 05:23:37,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 10 states have internal predecessors, (27), 4 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (10), 3 states have call predecessors, (10), 4 states have call successors, (10) [2023-04-01 05:23:37,248 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 93 transitions. [2023-04-01 05:23:37,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-04-01 05:23:37,253 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 05:23:37,254 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 05:23:37,263 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-04-01 05:23:37,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 05:23:37,460 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 05:23:37,461 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 05:23:37,461 INFO L85 PathProgramCache]: Analyzing trace with hash -1494414942, now seen corresponding path program 1 times [2023-04-01 05:23:37,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 05:23:37,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217234555] [2023-04-01 05:23:37,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 05:23:37,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 05:23:37,470 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-01 05:23:37,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [626547890] [2023-04-01 05:23:37,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 05:23:37,471 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 05:23:37,471 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 05:23:37,472 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) [2023-04-01 05:23:37,483 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-04-01 05:23:37,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 05:23:37,529 INFO L262 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 31 conjunts are in the unsatisfiable core [2023-04-01 05:23:37,531 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 05:23:37,737 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 15 proven. 29 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2023-04-01 05:23:37,737 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 05:23:39,262 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 15 proven. 29 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2023-04-01 05:23:39,262 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 05:23:39,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217234555] [2023-04-01 05:23:39,262 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-01 05:23:39,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [626547890] [2023-04-01 05:23:39,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [626547890] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 05:23:39,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1783323747] [2023-04-01 05:23:39,266 INFO L159 IcfgInterpreter]: Started Sifa with 24 locations of interest [2023-04-01 05:23:39,266 INFO L166 IcfgInterpreter]: Building call graph [2023-04-01 05:23:39,266 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-01 05:23:39,266 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-01 05:23:39,266 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-01 05:23:39,294 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 9 for LOIs [2023-04-01 05:23:40,096 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2023-04-01 05:23:40,099 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 28 for LOIs [2023-04-01 05:23:40,104 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2023-04-01 05:23:40,111 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-01 05:23:40,644 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2107#(and (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0))' at error location [2023-04-01 05:23:40,645 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-01 05:23:40,650 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-04-01 05:23:40,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2023-04-01 05:23:40,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047934815] [2023-04-01 05:23:40,650 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-04-01 05:23:40,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-04-01 05:23:40,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 05:23:40,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-04-01 05:23:40,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=652, Unknown=0, NotChecked=0, Total=756 [2023-04-01 05:23:40,653 INFO L87 Difference]: Start difference. First operand 78 states and 93 transitions. Second operand has 15 states, 15 states have (on average 2.1333333333333333) internal successors, (32), 13 states have internal predecessors, (32), 8 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (18), 5 states have call predecessors, (18), 6 states have call successors, (18) [2023-04-01 05:23:45,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 05:23:45,156 INFO L93 Difference]: Finished difference Result 104 states and 116 transitions. [2023-04-01 05:23:45,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-04-01 05:23:45,157 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.1333333333333333) internal successors, (32), 13 states have internal predecessors, (32), 8 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (18), 5 states have call predecessors, (18), 6 states have call successors, (18) Word has length 60 [2023-04-01 05:23:45,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 05:23:45,158 INFO L225 Difference]: With dead ends: 104 [2023-04-01 05:23:45,158 INFO L226 Difference]: Without dead ends: 102 [2023-04-01 05:23:45,159 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 149 SyntacticMatches, 5 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 257 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=140, Invalid=852, Unknown=0, NotChecked=0, Total=992 [2023-04-01 05:23:45,159 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 32 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 330 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-01 05:23:45,160 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 128 Invalid, 384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 330 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-01 05:23:45,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2023-04-01 05:23:45,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 100. [2023-04-01 05:23:45,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 59 states have (on average 1.0847457627118644) internal successors, (64), 63 states have internal predecessors, (64), 25 states have call successors, (25), 16 states have call predecessors, (25), 15 states have return successors, (22), 20 states have call predecessors, (22), 22 states have call successors, (22) [2023-04-01 05:23:45,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 111 transitions. [2023-04-01 05:23:45,197 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 111 transitions. Word has length 60 [2023-04-01 05:23:45,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 05:23:45,197 INFO L495 AbstractCegarLoop]: Abstraction has 100 states and 111 transitions. [2023-04-01 05:23:45,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.1333333333333333) internal successors, (32), 13 states have internal predecessors, (32), 8 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (18), 5 states have call predecessors, (18), 6 states have call successors, (18) [2023-04-01 05:23:45,197 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 111 transitions. [2023-04-01 05:23:45,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-04-01 05:23:45,198 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 05:23:45,199 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 05:23:45,207 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-04-01 05:23:45,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 05:23:45,405 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 05:23:45,405 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 05:23:45,405 INFO L85 PathProgramCache]: Analyzing trace with hash 920785569, now seen corresponding path program 1 times [2023-04-01 05:23:45,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 05:23:45,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532736639] [2023-04-01 05:23:45,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 05:23:45,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 05:23:45,415 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-01 05:23:45,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [948012281] [2023-04-01 05:23:45,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 05:23:45,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 05:23:45,416 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 05:23:45,426 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) [2023-04-01 05:23:45,429 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-04-01 05:23:45,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 05:23:45,484 INFO L262 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 33 conjunts are in the unsatisfiable core [2023-04-01 05:23:45,486 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 05:23:45,707 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 19 proven. 37 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2023-04-01 05:23:45,707 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 05:23:46,353 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 19 proven. 37 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2023-04-01 05:23:46,354 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 05:23:46,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532736639] [2023-04-01 05:23:46,354 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-01 05:23:46,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [948012281] [2023-04-01 05:23:46,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [948012281] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 05:23:46,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1101665137] [2023-04-01 05:23:46,356 INFO L159 IcfgInterpreter]: Started Sifa with 25 locations of interest [2023-04-01 05:23:46,356 INFO L166 IcfgInterpreter]: Building call graph [2023-04-01 05:23:46,356 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-01 05:23:46,356 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-01 05:23:46,357 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-01 05:23:46,375 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 9 for LOIs [2023-04-01 05:23:47,103 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2023-04-01 05:23:47,107 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 28 for LOIs [2023-04-01 05:23:47,113 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2023-04-01 05:23:47,121 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-01 05:23:47,619 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2873#(and (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0))' at error location [2023-04-01 05:23:47,619 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-01 05:23:47,619 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-04-01 05:23:47,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2023-04-01 05:23:47,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775431385] [2023-04-01 05:23:47,619 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-04-01 05:23:47,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-04-01 05:23:47,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 05:23:47,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-04-01 05:23:47,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=794, Unknown=0, NotChecked=0, Total=930 [2023-04-01 05:23:47,621 INFO L87 Difference]: Start difference. First operand 100 states and 111 transitions. Second operand has 17 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 15 states have internal predecessors, (34), 10 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (22), 7 states have call predecessors, (22), 8 states have call successors, (22) [2023-04-01 05:23:48,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 05:23:48,109 INFO L93 Difference]: Finished difference Result 122 states and 141 transitions. [2023-04-01 05:23:48,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-04-01 05:23:48,110 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 15 states have internal predecessors, (34), 10 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (22), 7 states have call predecessors, (22), 8 states have call successors, (22) Word has length 71 [2023-04-01 05:23:48,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 05:23:48,111 INFO L225 Difference]: With dead ends: 122 [2023-04-01 05:23:48,111 INFO L226 Difference]: Without dead ends: 107 [2023-04-01 05:23:48,112 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 179 SyntacticMatches, 5 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 337 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=180, Invalid=1010, Unknown=0, NotChecked=0, Total=1190 [2023-04-01 05:23:48,112 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 29 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-01 05:23:48,113 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 100 Invalid, 312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 266 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-01 05:23:48,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2023-04-01 05:23:48,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 93. [2023-04-01 05:23:48,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 56 states have (on average 1.0892857142857142) internal successors, (61), 58 states have internal predecessors, (61), 21 states have call successors, (21), 16 states have call predecessors, (21), 15 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2023-04-01 05:23:48,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 101 transitions. [2023-04-01 05:23:48,144 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 101 transitions. Word has length 71 [2023-04-01 05:23:48,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 05:23:48,145 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 101 transitions. [2023-04-01 05:23:48,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 15 states have internal predecessors, (34), 10 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (22), 7 states have call predecessors, (22), 8 states have call successors, (22) [2023-04-01 05:23:48,145 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 101 transitions. [2023-04-01 05:23:48,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-04-01 05:23:48,146 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 05:23:48,146 INFO L195 NwaCegarLoop]: trace histogram [13, 12, 12, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 05:23:48,155 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-04-01 05:23:48,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 05:23:48,353 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 05:23:48,353 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 05:23:48,353 INFO L85 PathProgramCache]: Analyzing trace with hash -248496609, now seen corresponding path program 1 times [2023-04-01 05:23:48,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 05:23:48,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723647131] [2023-04-01 05:23:48,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 05:23:48,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 05:23:48,360 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-01 05:23:48,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1345685081] [2023-04-01 05:23:48,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 05:23:48,360 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 05:23:48,361 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 05:23:48,361 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) [2023-04-01 05:23:48,364 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-04-01 05:23:48,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 05:23:48,412 INFO L262 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 05:23:48,414 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 05:23:48,452 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2023-04-01 05:23:48,452 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 05:23:48,452 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 05:23:48,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723647131] [2023-04-01 05:23:48,452 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-01 05:23:48,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1345685081] [2023-04-01 05:23:48,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1345685081] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 05:23:48,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 05:23:48,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-01 05:23:48,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108381738] [2023-04-01 05:23:48,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 05:23:48,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 05:23:48,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 05:23:48,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 05:23:48,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-04-01 05:23:48,454 INFO L87 Difference]: Start difference. First operand 93 states and 101 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 5 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) [2023-04-01 05:23:48,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 05:23:48,519 INFO L93 Difference]: Finished difference Result 100 states and 107 transitions. [2023-04-01 05:23:48,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 05:23:48,519 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 5 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) Word has length 81 [2023-04-01 05:23:48,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 05:23:48,520 INFO L225 Difference]: With dead ends: 100 [2023-04-01 05:23:48,521 INFO L226 Difference]: Without dead ends: 88 [2023-04-01 05:23:48,521 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-04-01 05:23:48,521 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 3 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-01 05:23:48,522 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 84 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-01 05:23:48,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2023-04-01 05:23:48,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2023-04-01 05:23:48,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 53 states have (on average 1.0566037735849056) internal successors, (56), 54 states have internal predecessors, (56), 20 states have call successors, (20), 15 states have call predecessors, (20), 14 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-04-01 05:23:48,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 94 transitions. [2023-04-01 05:23:48,551 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 94 transitions. Word has length 81 [2023-04-01 05:23:48,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 05:23:48,552 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 94 transitions. [2023-04-01 05:23:48,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 5 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) [2023-04-01 05:23:48,552 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 94 transitions. [2023-04-01 05:23:48,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-04-01 05:23:48,553 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 05:23:48,553 INFO L195 NwaCegarLoop]: trace histogram [13, 12, 12, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 05:23:48,561 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-04-01 05:23:48,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 05:23:48,759 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 05:23:48,760 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 05:23:48,760 INFO L85 PathProgramCache]: Analyzing trace with hash 761596098, now seen corresponding path program 2 times [2023-04-01 05:23:48,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 05:23:48,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508053447] [2023-04-01 05:23:48,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 05:23:48,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 05:23:48,768 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-01 05:23:48,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [10943036] [2023-04-01 05:23:48,768 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-04-01 05:23:48,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 05:23:48,768 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 05:23:48,769 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 05:23:48,777 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-04-01 05:23:48,823 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-04-01 05:23:48,823 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-01 05:23:48,824 INFO L262 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 10 conjunts are in the unsatisfiable core [2023-04-01 05:23:48,828 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 05:23:48,883 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 171 proven. 0 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2023-04-01 05:23:48,884 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 05:23:48,884 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 05:23:48,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508053447] [2023-04-01 05:23:48,884 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-01 05:23:48,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [10943036] [2023-04-01 05:23:48,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [10943036] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 05:23:48,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 05:23:48,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-01 05:23:48,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440116757] [2023-04-01 05:23:48,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 05:23:48,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-01 05:23:48,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 05:23:48,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-01 05:23:48,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-04-01 05:23:48,886 INFO L87 Difference]: Start difference. First operand 88 states and 94 transitions. Second operand has 6 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 4 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2023-04-01 05:23:48,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 05:23:48,936 INFO L93 Difference]: Finished difference Result 88 states and 94 transitions. [2023-04-01 05:23:48,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-04-01 05:23:48,936 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 4 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) Word has length 82 [2023-04-01 05:23:48,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 05:23:48,940 INFO L225 Difference]: With dead ends: 88 [2023-04-01 05:23:48,940 INFO L226 Difference]: Without dead ends: 0 [2023-04-01 05:23:48,943 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-04-01 05:23:48,945 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 3 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-01 05:23:48,945 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 57 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-01 05:23:48,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-04-01 05:23:48,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-04-01 05:23:48,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-04-01 05:23:48,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-04-01 05:23:48,947 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 82 [2023-04-01 05:23:48,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 05:23:48,947 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-04-01 05:23:48,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 4 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2023-04-01 05:23:48,947 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-04-01 05:23:48,947 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-04-01 05:23:48,950 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-04-01 05:23:48,956 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-04-01 05:23:49,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 05:23:49,155 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-04-01 05:23:51,410 INFO L899 garLoopResultBuilder]: For program point reach_errorEXIT(line 8) no Hoare annotation was computed. [2023-04-01 05:23:51,410 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line 8) no Hoare annotation was computed. [2023-04-01 05:23:51,410 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 11 13) the Hoare annotation is: true [2023-04-01 05:23:51,410 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 11 13) no Hoare annotation was computed. [2023-04-01 05:23:51,410 INFO L895 garLoopResultBuilder]: At program point L58(line 58) the Hoare annotation is: (let ((.cse1 (select |#memory_int| 1)) (.cse0 (select |#memory_int| 2))) (or (not (= (select .cse0 0) 104)) (not (= 97 (select .cse0 1))) (not (= (select .cse1 0) 48)) (not (= 8 (select |#length| 2))) (not (= |#NULL.offset| 0)) (not (= 2 (select |#length| 1))) (not (= (select .cse0 5) 46)) (not (= 100 (select .cse0 3))) (not (= 114 (select .cse0 2))) (not (= (select |#valid| 3) 1)) (not (= (select .cse0 6) 99)) (not (= (select |#length| 3) 12)) (not (= (select .cse0 7) 0)) (not (= (select |#valid| 0) 0)) (not (= (select .cse1 1) 0)) (not (= (select |#valid| 1) 1)) (not (= |#NULL.base| 0)) (not (= (select |#valid| 2) 1)) (not (= (select .cse0 4) 50)) (<= |#StackHeapBarrier| 0) (and (<= 0 main_~A~0) (<= main_~A~0 1) (= main_~d~0 1) (= main_~B~0 1) (= main_~p~0 1)))) [2023-04-01 05:23:51,410 INFO L899 garLoopResultBuilder]: For program point mainEXIT(lines 22 61) no Hoare annotation was computed. [2023-04-01 05:23:51,411 INFO L895 garLoopResultBuilder]: At program point L52-2(lines 44 56) the Hoare annotation is: (let ((.cse1 (select |#memory_int| 1)) (.cse3 (= main_~d~0 1)) (.cse5 (= main_~p~0 1)) (.cse0 (select |#memory_int| 2)) (.cse6 (= main_~A~0 main_~r~0)) (.cse2 (<= main_~A~0 1)) (.cse7 (= main_~q~0 0)) (.cse4 (= main_~B~0 1))) (or (not (= (select .cse0 0) 104)) (not (= 97 (select .cse0 1))) (not (= (select .cse1 0) 48)) (not (= 8 (select |#length| 2))) (not (= |#NULL.offset| 0)) (not (= 2 (select |#length| 1))) (not (= (select .cse0 5) 46)) (not (= 100 (select .cse0 3))) (and (= main_~A~0 (+ main_~r~0 1)) (<= 0 main_~r~0) .cse2 .cse3 .cse4 (= main_~q~0 1) .cse5) (not (= 114 (select .cse0 2))) (not (= (select |#valid| 3) 1)) (not (= (select .cse0 6) 99)) (not (= (select |#length| 3) 12)) (not (= (select .cse0 7) 0)) (not (= (select |#valid| 0) 0)) (not (= (select .cse1 1) 0)) (not (= (select |#valid| 1) 1)) (not (= |#NULL.base| 0)) (and (<= 0 main_~A~0) .cse6 .cse2 .cse3 .cse7 .cse4 .cse5) (not (= (select |#valid| 2) 1)) (not (= (select .cse0 4) 50)) (<= |#StackHeapBarrier| 0) (and .cse6 (= main_~p~0 2) (<= 1 main_~r~0) .cse2 (= main_~d~0 2) .cse7 .cse4))) [2023-04-01 05:23:51,411 INFO L899 garLoopResultBuilder]: For program point L46(lines 44 56) no Hoare annotation was computed. [2023-04-01 05:23:51,411 INFO L895 garLoopResultBuilder]: At program point L44-1(lines 44 56) the Hoare annotation is: (let ((.cse1 (select |#memory_int| 1)) (.cse2 (<= main_~A~0 1)) (.cse3 (= main_~d~0 1)) (.cse4 (= main_~B~0 1)) (.cse5 (= main_~p~0 1)) (.cse0 (select |#memory_int| 2))) (or (not (= (select .cse0 0) 104)) (not (= 97 (select .cse0 1))) (not (= (select .cse1 0) 48)) (not (= 8 (select |#length| 2))) (not (= |#NULL.offset| 0)) (not (= 2 (select |#length| 1))) (not (= (select .cse0 5) 46)) (not (= 100 (select .cse0 3))) (and (= main_~A~0 (+ main_~r~0 1)) (<= 0 main_~r~0) .cse2 .cse3 .cse4 (= main_~q~0 1) .cse5) (not (= 114 (select .cse0 2))) (not (= (select |#valid| 3) 1)) (not (= (select .cse0 6) 99)) (not (= (select |#length| 3) 12)) (not (= (select .cse0 7) 0)) (not (= (select |#valid| 0) 0)) (not (= (select .cse1 1) 0)) (not (= (select |#valid| 1) 1)) (not (= |#NULL.base| 0)) (and (<= 0 main_~A~0) (= main_~A~0 main_~r~0) .cse2 .cse3 (= main_~q~0 0) .cse4 .cse5) (not (= (select |#valid| 2) 1)) (not (= (select .cse0 4) 50)) (<= |#StackHeapBarrier| 0))) [2023-04-01 05:23:51,411 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 22 61) the Hoare annotation is: true [2023-04-01 05:23:51,411 INFO L895 garLoopResultBuilder]: At program point L36(line 36) the Hoare annotation is: (let ((.cse1 (select |#memory_int| 1)) (.cse0 (select |#memory_int| 2)) (.cse2 (= main_~A~0 main_~r~0)) (.cse3 (<= main_~A~0 1)) (.cse4 (= main_~q~0 0)) (.cse5 (= main_~B~0 1))) (or (not (= (select .cse0 0) 104)) (not (= 97 (select .cse0 1))) (not (= (select .cse1 0) 48)) (not (= 8 (select |#length| 2))) (not (= |#NULL.offset| 0)) (not (= 2 (select |#length| 1))) (not (= (select .cse0 5) 46)) (not (= 100 (select .cse0 3))) (not (= 114 (select .cse0 2))) (not (= (select |#valid| 3) 1)) (not (= (select .cse0 6) 99)) (not (= (select |#length| 3) 12)) (not (= (select .cse0 7) 0)) (not (= (select |#valid| 0) 0)) (not (= (select .cse1 1) 0)) (not (= (select |#valid| 1) 1)) (not (= |#NULL.base| 0)) (and (<= 0 main_~A~0) .cse2 .cse3 (= main_~d~0 1) .cse4 .cse5 (= main_~p~0 1)) (not (= (select |#valid| 2) 1)) (not (= (select .cse0 4) 50)) (<= |#StackHeapBarrier| 0) (and .cse2 (= main_~p~0 2) (<= 1 main_~r~0) .cse3 (= main_~d~0 2) .cse4 .cse5))) [2023-04-01 05:23:51,412 INFO L895 garLoopResultBuilder]: At program point L34-2(lines 34 42) the Hoare annotation is: (let ((.cse1 (select |#memory_int| 1)) (.cse0 (select |#memory_int| 2)) (.cse2 (= main_~A~0 main_~r~0)) (.cse3 (<= main_~A~0 1)) (.cse4 (= main_~q~0 0)) (.cse5 (= main_~B~0 1))) (or (not (= (select .cse0 0) 104)) (not (= 97 (select .cse0 1))) (not (= (select .cse1 0) 48)) (not (= 8 (select |#length| 2))) (not (= |#NULL.offset| 0)) (not (= 2 (select |#length| 1))) (not (= (select .cse0 5) 46)) (not (= 100 (select .cse0 3))) (not (= 114 (select .cse0 2))) (not (= (select |#valid| 3) 1)) (not (= (select .cse0 6) 99)) (not (= (select |#length| 3) 12)) (not (= (select .cse0 7) 0)) (not (= (select |#valid| 0) 0)) (not (= (select .cse1 1) 0)) (not (= (select |#valid| 1) 1)) (not (= |#NULL.base| 0)) (and (<= 0 main_~A~0) .cse2 .cse3 (= main_~d~0 1) .cse4 .cse5 (= main_~p~0 1)) (not (= (select |#valid| 2) 1)) (not (= (select .cse0 4) 50)) (<= |#StackHeapBarrier| 0) (and .cse2 (= main_~p~0 2) (<= 1 main_~r~0) .cse3 (= main_~d~0 2) .cse4 .cse5))) [2023-04-01 05:23:51,412 INFO L899 garLoopResultBuilder]: For program point L59(line 59) no Hoare annotation was computed. [2023-04-01 05:23:51,412 INFO L895 garLoopResultBuilder]: At program point L26(line 26) the Hoare annotation is: (let ((.cse1 (select |#memory_int| 1)) (.cse0 (select |#memory_int| 2))) (or (not (= (select .cse0 0) 104)) (not (= 97 (select .cse0 1))) (not (= (select .cse1 0) 48)) (not (= 8 (select |#length| 2))) (not (= |#NULL.offset| 0)) (not (= 2 (select |#length| 1))) (not (= (select .cse0 5) 46)) (not (= 100 (select .cse0 3))) (not (= 114 (select .cse0 2))) (not (= (select |#valid| 3) 1)) (not (= (select .cse0 6) 99)) (and (<= main_~A~0 2147483647) (<= 0 (+ main_~A~0 2147483648))) (not (= (select |#length| 3) 12)) (not (= (select .cse0 7) 0)) (not (= (select |#valid| 0) 0)) (not (= (select .cse1 1) 0)) (not (= (select |#valid| 1) 1)) (not (= |#NULL.base| 0)) (not (= (select |#valid| 2) 1)) (not (= (select .cse0 4) 50)) (<= |#StackHeapBarrier| 0))) [2023-04-01 05:23:51,412 INFO L899 garLoopResultBuilder]: For program point L26-1(line 26) no Hoare annotation was computed. [2023-04-01 05:23:51,412 INFO L895 garLoopResultBuilder]: At program point L45(line 45) the Hoare annotation is: (let ((.cse1 (select |#memory_int| 1)) (.cse3 (= main_~d~0 1)) (.cse5 (= main_~p~0 1)) (.cse0 (select |#memory_int| 2)) (.cse6 (= main_~A~0 main_~r~0)) (.cse2 (<= main_~A~0 1)) (.cse7 (= main_~q~0 0)) (.cse4 (= main_~B~0 1))) (or (not (= (select .cse0 0) 104)) (not (= 97 (select .cse0 1))) (not (= (select .cse1 0) 48)) (not (= 8 (select |#length| 2))) (not (= |#NULL.offset| 0)) (not (= 2 (select |#length| 1))) (not (= (select .cse0 5) 46)) (not (= 100 (select .cse0 3))) (and (= main_~A~0 (+ main_~r~0 1)) (<= 0 main_~r~0) .cse2 .cse3 .cse4 (= main_~q~0 1) .cse5) (not (= 114 (select .cse0 2))) (not (= (select |#valid| 3) 1)) (not (= (select .cse0 6) 99)) (not (= (select |#length| 3) 12)) (not (= (select .cse0 7) 0)) (not (= (select |#valid| 0) 0)) (not (= (select .cse1 1) 0)) (not (= (select |#valid| 1) 1)) (not (= |#NULL.base| 0)) (and (<= 0 main_~A~0) .cse6 .cse2 .cse3 .cse7 .cse4 .cse5) (not (= (select |#valid| 2) 1)) (not (= (select .cse0 4) 50)) (<= |#StackHeapBarrier| 0) (and .cse6 (= main_~p~0 2) (<= 1 main_~r~0) .cse2 (= main_~d~0 2) .cse7 .cse4))) [2023-04-01 05:23:51,412 INFO L895 garLoopResultBuilder]: At program point L45-1(line 45) the Hoare annotation is: (let ((.cse1 (select |#memory_int| 1)) (.cse3 (= main_~d~0 1)) (.cse5 (= main_~p~0 1)) (.cse0 (select |#memory_int| 2)) (.cse6 (= main_~A~0 main_~r~0)) (.cse2 (<= main_~A~0 1)) (.cse7 (= main_~q~0 0)) (.cse4 (= main_~B~0 1))) (or (not (= (select .cse0 0) 104)) (not (= 97 (select .cse0 1))) (not (= (select .cse1 0) 48)) (not (= 8 (select |#length| 2))) (not (= |#NULL.offset| 0)) (not (= 2 (select |#length| 1))) (not (= (select .cse0 5) 46)) (not (= 100 (select .cse0 3))) (and (= main_~A~0 (+ main_~r~0 1)) (<= 0 main_~r~0) .cse2 .cse3 .cse4 (= main_~q~0 1) .cse5) (not (= 114 (select .cse0 2))) (not (= (select |#valid| 3) 1)) (not (= (select .cse0 6) 99)) (not (= (select |#length| 3) 12)) (not (= (select .cse0 7) 0)) (not (= (select |#valid| 0) 0)) (not (= (select .cse1 1) 0)) (not (= (select |#valid| 1) 1)) (not (= |#NULL.base| 0)) (and (<= 0 main_~A~0) .cse6 .cse2 .cse3 .cse7 .cse4 .cse5) (not (= (select |#valid| 2) 1)) (not (= (select .cse0 4) 50)) (<= |#StackHeapBarrier| 0) (and .cse6 (= main_~p~0 2) (<= 1 main_~r~0) .cse2 (= main_~d~0 2) .cse7 .cse4))) [2023-04-01 05:23:51,413 INFO L899 garLoopResultBuilder]: For program point L37(lines 34 42) no Hoare annotation was computed. [2023-04-01 05:23:51,413 INFO L895 garLoopResultBuilder]: At program point L35(line 35) the Hoare annotation is: (let ((.cse1 (select |#memory_int| 1)) (.cse0 (select |#memory_int| 2)) (.cse2 (= main_~A~0 main_~r~0)) (.cse3 (<= main_~A~0 1)) (.cse4 (= main_~q~0 0)) (.cse5 (= main_~B~0 1))) (or (not (= (select .cse0 0) 104)) (not (= 97 (select .cse0 1))) (not (= (select .cse1 0) 48)) (not (= 8 (select |#length| 2))) (not (= |#NULL.offset| 0)) (not (= 2 (select |#length| 1))) (not (= (select .cse0 5) 46)) (not (= 100 (select .cse0 3))) (not (= 114 (select .cse0 2))) (not (= (select |#valid| 3) 1)) (not (= (select .cse0 6) 99)) (not (= (select |#length| 3) 12)) (not (= (select .cse0 7) 0)) (not (= (select |#valid| 0) 0)) (not (= (select .cse1 1) 0)) (not (= (select |#valid| 1) 1)) (not (= |#NULL.base| 0)) (and (<= 0 main_~A~0) .cse2 .cse3 (= main_~d~0 1) .cse4 .cse5 (= main_~p~0 1)) (not (= (select |#valid| 2) 1)) (not (= (select .cse0 4) 50)) (<= |#StackHeapBarrier| 0) (and .cse2 (= main_~p~0 2) (<= 1 main_~r~0) .cse3 (= main_~d~0 2) .cse4 .cse5))) [2023-04-01 05:23:51,413 INFO L895 garLoopResultBuilder]: At program point L35-1(line 35) the Hoare annotation is: (let ((.cse1 (select |#memory_int| 1)) (.cse0 (select |#memory_int| 2)) (.cse2 (= main_~A~0 main_~r~0)) (.cse3 (<= main_~A~0 1)) (.cse4 (= main_~q~0 0)) (.cse5 (= main_~B~0 1))) (or (not (= (select .cse0 0) 104)) (not (= 97 (select .cse0 1))) (not (= (select .cse1 0) 48)) (not (= 8 (select |#length| 2))) (not (= |#NULL.offset| 0)) (not (= 2 (select |#length| 1))) (not (= (select .cse0 5) 46)) (not (= 100 (select .cse0 3))) (not (= 114 (select .cse0 2))) (not (= (select |#valid| 3) 1)) (not (= (select .cse0 6) 99)) (not (= (select |#length| 3) 12)) (not (= (select .cse0 7) 0)) (not (= (select |#valid| 0) 0)) (not (= (select .cse1 1) 0)) (not (= (select |#valid| 1) 1)) (not (= |#NULL.base| 0)) (and (<= 0 main_~A~0) .cse2 .cse3 (= main_~d~0 1) .cse4 .cse5 (= main_~p~0 1)) (not (= (select |#valid| 2) 1)) (not (= (select .cse0 4) 50)) (<= |#StackHeapBarrier| 0) (and .cse2 (= main_~p~0 2) (<= 1 main_~r~0) .cse3 (= main_~d~0 2) .cse4 .cse5))) [2023-04-01 05:23:51,413 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(line -1) the Hoare annotation is: (and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|)) [2023-04-01 05:23:51,413 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2023-04-01 05:23:51,413 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-04-01 05:23:51,413 INFO L895 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: (let ((.cse1 (select |#memory_int| 1)) (.cse0 (select |#memory_int| 2))) (and (= (select .cse0 7) 0) (= (select |#length| 3) 12) (= 114 (select .cse0 2)) (= (select .cse0 6) 99) (= 97 (select .cse0 1)) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (= (select .cse0 4) 50) (= 100 (select .cse0 3)) (= (select |#valid| 1) 1) (= (select |#valid| 0) 0) (= (select .cse0 5) 46) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= 8 (select |#length| 2)) (= (select .cse1 0) 48) (= (select .cse1 1) 0) (= (select .cse0 0) 104) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) [2023-04-01 05:23:51,413 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2023-04-01 05:23:51,413 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(line -1) the Hoare annotation is: true [2023-04-01 05:23:51,414 INFO L899 garLoopResultBuilder]: For program point L16(lines 16 17) no Hoare annotation was computed. [2023-04-01 05:23:51,414 INFO L899 garLoopResultBuilder]: For program point L15(lines 15 18) no Hoare annotation was computed. [2023-04-01 05:23:51,414 INFO L899 garLoopResultBuilder]: For program point L15-2(lines 14 20) no Hoare annotation was computed. [2023-04-01 05:23:51,414 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 14 20) no Hoare annotation was computed. [2023-04-01 05:23:51,414 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 14 20) the Hoare annotation is: true [2023-04-01 05:23:51,414 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2023-04-01 05:23:51,417 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 05:23:51,418 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-04-01 05:23:51,439 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.04 05:23:51 BoogieIcfgContainer [2023-04-01 05:23:51,439 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-04-01 05:23:51,440 INFO L158 Benchmark]: Toolchain (without parser) took 21546.25ms. Allocated memory was 286.3MB in the beginning and 601.9MB in the end (delta: 315.6MB). Free memory was 236.0MB in the beginning and 428.5MB in the end (delta: -192.5MB). Peak memory consumption was 348.9MB. Max. memory is 8.0GB. [2023-04-01 05:23:51,440 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 184.5MB. Free memory was 132.8MB in the beginning and 132.6MB in the end (delta: 176.3kB). There was no memory consumed. Max. memory is 8.0GB. [2023-04-01 05:23:51,440 INFO L158 Benchmark]: CACSL2BoogieTranslator took 179.11ms. Allocated memory is still 286.3MB. Free memory was 235.5MB in the beginning and 225.0MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-04-01 05:23:51,440 INFO L158 Benchmark]: Boogie Preprocessor took 29.39ms. Allocated memory is still 286.3MB. Free memory was 225.0MB in the beginning and 223.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-04-01 05:23:51,441 INFO L158 Benchmark]: RCFGBuilder took 287.89ms. Allocated memory is still 286.3MB. Free memory was 223.4MB in the beginning and 209.3MB in the end (delta: 14.2MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2023-04-01 05:23:51,441 INFO L158 Benchmark]: TraceAbstraction took 21041.95ms. Allocated memory was 286.3MB in the beginning and 601.9MB in the end (delta: 315.6MB). Free memory was 208.7MB in the beginning and 428.5MB in the end (delta: -219.7MB). Peak memory consumption was 321.7MB. Max. memory is 8.0GB. [2023-04-01 05:23:51,442 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 184.5MB. Free memory was 132.8MB in the beginning and 132.6MB in the end (delta: 176.3kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 179.11ms. Allocated memory is still 286.3MB. Free memory was 235.5MB in the beginning and 225.0MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 29.39ms. Allocated memory is still 286.3MB. Free memory was 225.0MB in the beginning and 223.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 287.89ms. Allocated memory is still 286.3MB. Free memory was 223.4MB in the beginning and 209.3MB in the end (delta: 14.2MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * TraceAbstraction took 21041.95ms. Allocated memory was 286.3MB in the beginning and 601.9MB in the end (delta: 315.6MB). Free memory was 208.7MB in the beginning and 428.5MB in the end (delta: -219.7MB). Peak memory consumption was 321.7MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 32 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 21.0s, OverallIterations: 9, TraceHistogramMax: 13, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 7.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 2.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 228 SdHoareTripleChecker+Valid, 1.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 192 mSDsluCounter, 751 SdHoareTripleChecker+Invalid, 1.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 528 mSDsCounter, 224 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1243 IncrementalHoareTripleChecker+Invalid, 1467 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 224 mSolverCounterUnsat, 223 mSDtfsCounter, 1243 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 924 GetRequests, 751 SyntacticMatches, 20 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1077 ImplicationChecksByTransitivity, 7.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=100occurred in iteration=6, InterpolantAutomatonStates: 79, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 9 MinimizatonAttempts, 29 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 16 LocationsWithAnnotation, 59 PreInvPairs, 80 NumberOfFragments, 1917 HoareAnnotationTreeSize, 59 FomulaSimplifications, 394 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 16 FomulaSimplificationsInter, 3664 FormulaSimplificationTreeSizeReductionInter, 2.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 3.7s InterpolantComputationTime, 440 NumberOfCodeBlocks, 403 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 670 ConstructedInterpolants, 0 QuantifiedInterpolants, 4464 SizeOfPredicates, 19 NumberOfNonLiveVariables, 1115 ConjunctsInSsa, 137 ConjunctsInUnsatCore, 14 InterpolantComputations, 4 PerfectInterpolantSequences, 1375/1577 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: OVERALL_TIME: 0.4s, ICFG_INTERPRETER_ENTERED_PROCEDURES: 5, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 19, DAG_INTERPRETER_EARLY_EXITS: 1, TOOLS_POST_APPLICATIONS: 14, TOOLS_POST_TIME: 0.1s, TOOLS_POST_CALL_APPLICATIONS: 14, TOOLS_POST_CALL_TIME: 0.1s, TOOLS_POST_RETURN_APPLICATIONS: 8, TOOLS_POST_RETURN_TIME: 0.1s, TOOLS_QUANTIFIERELIM_APPLICATIONS: 36, TOOLS_QUANTIFIERELIM_TIME: 0.2s, TOOLS_QUANTIFIERELIM_MAX_TIME: 0.0s, FLUID_QUERY_TIME: 0.0s, FLUID_QUERIES: 56, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 12, DOMAIN_JOIN_TIME: 0.1s, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME: 0.0s, DOMAIN_WIDEN_APPLICATIONS: 0, DOMAIN_WIDEN_TIME: 0.0s, DOMAIN_ISSUBSETEQ_APPLICATIONS: 0, DOMAIN_ISSUBSETEQ_TIME: 0.0s, DOMAIN_ISBOTTOM_APPLICATIONS: 19, DOMAIN_ISBOTTOM_TIME: 0.0s, LOOP_SUMMARIZER_APPLICATIONS: 0, LOOP_SUMMARIZER_CACHE_MISSES: 0, LOOP_SUMMARIZER_OVERALL_TIME: 0.0s, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME: 0.0s, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 0, CALL_SUMMARIZER_APPLICATIONS: 8, CALL_SUMMARIZER_CACHE_MISSES: 3, CALL_SUMMARIZER_OVERALL_TIME: 0.0s, CALL_SUMMARIZER_NEW_COMPUTATION_TIME: 0.0s, PROCEDURE_GRAPH_BUILDER_TIME: 0.0s, PATH_EXPR_TIME: 0.0s, REGEX_TO_DAG_TIME: 0.0s, DAG_COMPRESSION_TIME: 0.0s, DAG_COMPRESSION_PROCESSED_NODES: 137, DAG_COMPRESSION_RETAINED_NODES: 64, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 44]: Loop Invariant Derived loop invariant: (((((((((((((((((((((!(unknown-#memory_int-unknown[2][0] == 104) || !(97 == unknown-#memory_int-unknown[2][1])) || !(unknown-#memory_int-unknown[1][0] == 48)) || !(8 == unknown-#length-unknown[2])) || !(#NULL == 0)) || !(2 == unknown-#length-unknown[1])) || !(unknown-#memory_int-unknown[2][5] == 46)) || !(100 == unknown-#memory_int-unknown[2][3])) || ((((((A == r + 1 && 0 <= r) && A <= 1) && d == 1) && B == 1) && q == 1) && p == 1)) || !(114 == unknown-#memory_int-unknown[2][2])) || !(\valid[3] == 1)) || !(unknown-#memory_int-unknown[2][6] == 99)) || !(unknown-#length-unknown[3] == 12)) || !(unknown-#memory_int-unknown[2][7] == 0)) || !(\valid[0] == 0)) || !(unknown-#memory_int-unknown[1][1] == 0)) || !(\valid[1] == 1)) || !(#NULL == 0)) || ((((((0 <= A && A == r) && A <= 1) && d == 1) && q == 0) && B == 1) && p == 1)) || !(\valid[2] == 1)) || !(unknown-#memory_int-unknown[2][4] == 50)) || unknown-#StackHeapBarrier-unknown <= 0) || ((((((A == r && p == 2) && 1 <= r) && A <= 1) && d == 2) && q == 0) && B == 1) - InvariantResult [Line: 34]: Loop Invariant Derived loop invariant: ((((((((((((((((((((!(unknown-#memory_int-unknown[2][0] == 104) || !(97 == unknown-#memory_int-unknown[2][1])) || !(unknown-#memory_int-unknown[1][0] == 48)) || !(8 == unknown-#length-unknown[2])) || !(#NULL == 0)) || !(2 == unknown-#length-unknown[1])) || !(unknown-#memory_int-unknown[2][5] == 46)) || !(100 == unknown-#memory_int-unknown[2][3])) || !(114 == unknown-#memory_int-unknown[2][2])) || !(\valid[3] == 1)) || !(unknown-#memory_int-unknown[2][6] == 99)) || !(unknown-#length-unknown[3] == 12)) || !(unknown-#memory_int-unknown[2][7] == 0)) || !(\valid[0] == 0)) || !(unknown-#memory_int-unknown[1][1] == 0)) || !(\valid[1] == 1)) || !(#NULL == 0)) || ((((((0 <= A && A == r) && A <= 1) && d == 1) && q == 0) && B == 1) && p == 1)) || !(\valid[2] == 1)) || !(unknown-#memory_int-unknown[2][4] == 50)) || unknown-#StackHeapBarrier-unknown <= 0) || ((((((A == r && p == 2) && 1 <= r) && A <= 1) && d == 2) && q == 0) && B == 1) RESULT: Ultimate proved your program to be correct! [2023-04-01 05:23:51,472 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...