/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml --sifa.abstract.domain OctagonDomain -i ../sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_valuebound10.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-02 22:36:55,182 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-02 22:36:55,184 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-02 22:36:55,223 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-02 22:36:55,224 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-02 22:36:55,225 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-02 22:36:55,226 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-02 22:36:55,227 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-02 22:36:55,228 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-02 22:36:55,229 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-02 22:36:55,230 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-02 22:36:55,231 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-02 22:36:55,231 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-02 22:36:55,232 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-02 22:36:55,233 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-02 22:36:55,234 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-02 22:36:55,234 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-02 22:36:55,235 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-02 22:36:55,236 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-02 22:36:55,237 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-02 22:36:55,238 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-02 22:36:55,239 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-02 22:36:55,240 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-02 22:36:55,240 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-02 22:36:55,243 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-02 22:36:55,243 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-02 22:36:55,244 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-02 22:36:55,244 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-02 22:36:55,245 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-02 22:36:55,245 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-02 22:36:55,246 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-02 22:36:55,246 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-02 22:36:55,247 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-02 22:36:55,247 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-02 22:36:55,248 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-02 22:36:55,248 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-02 22:36:55,249 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-02 22:36:55,249 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-02 22:36:55,249 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-02 22:36:55,250 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-02 22:36:55,250 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-02 22:36:55,251 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf [2023-04-02 22:36:55,269 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-02 22:36:55,269 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-02 22:36:55,269 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-02 22:36:55,270 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-02 22:36:55,270 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-02 22:36:55,270 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-02 22:36:55,271 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-02 22:36:55,271 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-02 22:36:55,271 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-02 22:36:55,271 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-02 22:36:55,271 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-02 22:36:55,271 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-02 22:36:55,271 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-02 22:36:55,272 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-02 22:36:55,272 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-02 22:36:55,272 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-02 22:36:55,272 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-02 22:36:55,272 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-02 22:36:55,273 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-02 22:36:55,273 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-02 22:36:55,273 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-02 22:36:55,273 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-02 22:36:55,273 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-02 22:36:55,273 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-02 22:36:55,274 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-02 22:36:55,274 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-02 22:36:55,274 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-02 22:36:55,274 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-02 22:36:55,274 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-02 22:36:55,274 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-02 22:36:55,274 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-02 22:36:55,275 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-02 22:36:55,275 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 22:36:55,275 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-02 22:36:55,275 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-02 22:36:55,275 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-02 22:36:55,275 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-02 22:36:55,275 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-02 22:36:55,276 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-02 22:36:55,276 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-02 22:36:55,276 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-02 22:36:55,276 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> OctagonDomain [2023-04-02 22:36:55,499 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-02 22:36:55,523 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-02 22:36:55,526 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-02 22:36:55,527 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-02 22:36:55,527 INFO L275 PluginConnector]: CDTParser initialized [2023-04-02 22:36:55,529 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_valuebound10.c [2023-04-02 22:36:56,657 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-02 22:36:56,863 INFO L351 CDTParser]: Found 1 translation units. [2023-04-02 22:36:56,863 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_valuebound10.c [2023-04-02 22:36:56,869 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/560a8972c/871383b10a064048b455ab819609b0d4/FLAG9648aafea [2023-04-02 22:36:56,883 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/560a8972c/871383b10a064048b455ab819609b0d4 [2023-04-02 22:36:56,885 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-02 22:36:56,887 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-02 22:36:56,888 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-02 22:36:56,888 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-02 22:36:56,890 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-02 22:36:56,891 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 10:36:56" (1/1) ... [2023-04-02 22:36:56,892 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5174d94d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 10:36:56, skipping insertion in model container [2023-04-02 22:36:56,892 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 10:36:56" (1/1) ... [2023-04-02 22:36:56,898 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-02 22:36:56,912 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-02 22:36:57,058 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_valuebound10.c[588,601] [2023-04-02 22:36:57,088 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 22:36:57,096 INFO L203 MainTranslator]: Completed pre-run [2023-04-02 22:36:57,106 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_valuebound10.c[588,601] [2023-04-02 22:36:57,114 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 22:36:57,124 INFO L208 MainTranslator]: Completed translation [2023-04-02 22:36:57,124 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 10:36:57 WrapperNode [2023-04-02 22:36:57,124 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-02 22:36:57,125 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-02 22:36:57,125 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-02 22:36:57,125 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-02 22:36:57,133 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 10:36:57" (1/1) ... [2023-04-02 22:36:57,134 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 10:36:57" (1/1) ... [2023-04-02 22:36:57,141 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 10:36:57" (1/1) ... [2023-04-02 22:36:57,141 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 10:36:57" (1/1) ... [2023-04-02 22:36:57,145 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 10:36:57" (1/1) ... [2023-04-02 22:36:57,147 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 10:36:57" (1/1) ... [2023-04-02 22:36:57,148 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 10:36:57" (1/1) ... [2023-04-02 22:36:57,149 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 10:36:57" (1/1) ... [2023-04-02 22:36:57,150 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-02 22:36:57,151 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-02 22:36:57,151 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-02 22:36:57,151 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-02 22:36:57,152 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 10:36:57" (1/1) ... [2023-04-02 22:36:57,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 22:36:57,166 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 22:36:57,176 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-04-02 22:36:57,182 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-04-02 22:36:57,207 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-02 22:36:57,207 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-02 22:36:57,207 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-02 22:36:57,207 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-02 22:36:57,208 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-04-02 22:36:57,208 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-02 22:36:57,208 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-02 22:36:57,208 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-02 22:36:57,208 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-02 22:36:57,208 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-02 22:36:57,208 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ushort [2023-04-02 22:36:57,208 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-02 22:36:57,208 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-04-02 22:36:57,209 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-02 22:36:57,209 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-02 22:36:57,209 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-02 22:36:57,209 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-02 22:36:57,209 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-02 22:36:57,209 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-02 22:36:57,209 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-02 22:36:57,261 INFO L236 CfgBuilder]: Building ICFG [2023-04-02 22:36:57,263 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-02 22:36:57,385 INFO L277 CfgBuilder]: Performing block encoding [2023-04-02 22:36:57,403 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-02 22:36:57,403 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-04-02 22:36:57,405 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 10:36:57 BoogieIcfgContainer [2023-04-02 22:36:57,405 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-02 22:36:57,407 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-02 22:36:57,407 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-02 22:36:57,409 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-02 22:36:57,410 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.04 10:36:56" (1/3) ... [2023-04-02 22:36:57,410 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c4ac17d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 10:36:57, skipping insertion in model container [2023-04-02 22:36:57,410 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 10:36:57" (2/3) ... [2023-04-02 22:36:57,411 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c4ac17d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 10:36:57, skipping insertion in model container [2023-04-02 22:36:57,411 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 10:36:57" (3/3) ... [2023-04-02 22:36:57,412 INFO L112 eAbstractionObserver]: Analyzing ICFG cohencu-ll_valuebound10.c [2023-04-02 22:36:57,425 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-02 22:36:57,425 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-02 22:36:57,470 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-02 22:36:57,477 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;@3fe845f1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-02 22:36:57,477 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-02 22:36:57,480 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 13 states have internal predecessors, (16), 14 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-04-02 22:36:57,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-04-02 22:36:57,488 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 22:36:57,488 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 22:36:57,489 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 22:36:57,493 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 22:36:57,493 INFO L85 PathProgramCache]: Analyzing trace with hash -36751625, now seen corresponding path program 1 times [2023-04-02 22:36:57,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 22:36:57,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858997147] [2023-04-02 22:36:57,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 22:36:57,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 22:36:57,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 22:36:57,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 22:36:57,851 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 22:36:57,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858997147] [2023-04-02 22:36:57,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858997147] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 22:36:57,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 22:36:57,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 22:36:57,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331264509] [2023-04-02 22:36:57,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 22:36:57,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-02 22:36:57,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 22:36:57,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-02 22:36:57,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-02 22:36:57,903 INFO L87 Difference]: Start difference. First operand has 32 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 13 states have internal predecessors, (16), 14 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-04-02 22:36:58,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 22:36:58,049 INFO L93 Difference]: Finished difference Result 59 states and 94 transitions. [2023-04-02 22:36:58,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-04-02 22:36:58,051 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 14 [2023-04-02 22:36:58,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 22:36:58,057 INFO L225 Difference]: With dead ends: 59 [2023-04-02 22:36:58,058 INFO L226 Difference]: Without dead ends: 32 [2023-04-02 22:36:58,063 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-02 22:36:58,066 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 8 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 22:36:58,066 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 86 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 22:36:58,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2023-04-02 22:36:58,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2023-04-02 22:36:58,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 14 states have internal predecessors, (15), 14 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-04-02 22:36:58,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 41 transitions. [2023-04-02 22:36:58,112 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 41 transitions. Word has length 14 [2023-04-02 22:36:58,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 22:36:58,112 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 41 transitions. [2023-04-02 22:36:58,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-04-02 22:36:58,113 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 41 transitions. [2023-04-02 22:36:58,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-04-02 22:36:58,114 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 22:36:58,114 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 22:36:58,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-02 22:36:58,114 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 22:36:58,115 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 22:36:58,115 INFO L85 PathProgramCache]: Analyzing trace with hash 726531578, now seen corresponding path program 1 times [2023-04-02 22:36:58,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 22:36:58,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340138420] [2023-04-02 22:36:58,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 22:36:58,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 22:36:58,130 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 22:36:58,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1599505612] [2023-04-02 22:36:58,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 22:36:58,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 22:36:58,130 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 22:36:58,133 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 22:36:58,146 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-04-02 22:36:58,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 22:36:58,214 INFO L262 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 17 conjunts are in the unsatisfiable core [2023-04-02 22:36:58,221 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 22:36:58,335 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 22:36:58,335 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 22:36:58,468 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 22:36:58,468 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 22:36:58,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340138420] [2023-04-02 22:36:58,469 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 22:36:58,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1599505612] [2023-04-02 22:36:58,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1599505612] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 22:36:58,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [795575025] [2023-04-02 22:36:58,498 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2023-04-02 22:36:58,499 INFO L166 IcfgInterpreter]: Building call graph [2023-04-02 22:36:58,501 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-02 22:36:58,505 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-02 22:36:58,506 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-02 22:36:58,597 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 9 for LOIs [2023-04-02 22:36:58,810 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 11 for LOIs [2023-04-02 22:36:58,820 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 38 for LOIs [2023-04-02 22:36:58,837 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2023-04-02 22:36:58,851 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-02 22:36:59,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [795575025] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 22:36:59,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-04-02 22:36:59,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [8, 7] total 22 [2023-04-02 22:36:59,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669439550] [2023-04-02 22:36:59,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 22:36:59,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-02 22:36:59,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 22:36:59,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-02 22:36:59,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=384, Unknown=0, NotChecked=0, Total=462 [2023-04-02 22:36:59,230 INFO L87 Difference]: Start difference. First operand 32 states and 41 transitions. Second operand has 12 states, 8 states have (on average 1.25) internal successors, (10), 6 states have internal predecessors, (10), 4 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-02 22:37:01,421 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-04-02 22:37:02,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 22:37:02,289 INFO L93 Difference]: Finished difference Result 63 states and 80 transitions. [2023-04-02 22:37:02,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-04-02 22:37:02,290 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 8 states have (on average 1.25) internal successors, (10), 6 states have internal predecessors, (10), 4 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 19 [2023-04-02 22:37:02,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 22:37:02,291 INFO L225 Difference]: With dead ends: 63 [2023-04-02 22:37:02,291 INFO L226 Difference]: Without dead ends: 47 [2023-04-02 22:37:02,292 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=155, Invalid=715, Unknown=0, NotChecked=0, Total=870 [2023-04-02 22:37:02,293 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 38 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 85 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-04-02 22:37:02,294 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 11 Invalid, 314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 228 Invalid, 1 Unknown, 0 Unchecked, 2.3s Time] [2023-04-02 22:37:02,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2023-04-02 22:37:02,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2023-04-02 22:37:02,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 21 states have (on average 1.0952380952380953) internal successors, (23), 22 states have internal predecessors, (23), 19 states have call successors, (19), 7 states have call predecessors, (19), 6 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-04-02 22:37:02,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 59 transitions. [2023-04-02 22:37:02,317 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 59 transitions. Word has length 19 [2023-04-02 22:37:02,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 22:37:02,318 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 59 transitions. [2023-04-02 22:37:02,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 8 states have (on average 1.25) internal successors, (10), 6 states have internal predecessors, (10), 4 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-02 22:37:02,318 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 59 transitions. [2023-04-02 22:37:02,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-04-02 22:37:02,320 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 22:37:02,320 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 22:37:02,329 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-04-02 22:37:02,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 22:37:02,526 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 22:37:02,528 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 22:37:02,528 INFO L85 PathProgramCache]: Analyzing trace with hash 1549398967, now seen corresponding path program 1 times [2023-04-02 22:37:02,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 22:37:02,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221781167] [2023-04-02 22:37:02,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 22:37:02,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 22:37:02,550 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 22:37:02,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1814192435] [2023-04-02 22:37:02,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 22:37:02,551 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 22:37:02,551 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 22:37:02,552 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 22:37:02,560 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-04-02 22:37:02,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 22:37:02,616 INFO L262 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 21 conjunts are in the unsatisfiable core [2023-04-02 22:37:02,621 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 22:37:02,735 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 11 proven. 19 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-04-02 22:37:02,736 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 22:37:02,869 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 13 proven. 17 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-04-02 22:37:02,869 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 22:37:02,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221781167] [2023-04-02 22:37:02,870 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 22:37:02,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1814192435] [2023-04-02 22:37:02,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1814192435] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 22:37:02,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [770452963] [2023-04-02 22:37:02,877 INFO L159 IcfgInterpreter]: Started Sifa with 22 locations of interest [2023-04-02 22:37:02,877 INFO L166 IcfgInterpreter]: Building call graph [2023-04-02 22:37:02,877 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-02 22:37:02,877 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-02 22:37:02,878 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-02 22:37:02,902 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 9 for LOIs [2023-04-02 22:37:04,831 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2023-04-02 22:37:04,833 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 38 for LOIs [2023-04-02 22:37:04,841 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2023-04-02 22:37:04,845 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-02 22:37:05,531 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '795#(and (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0))' at error location [2023-04-02 22:37:05,531 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-02 22:37:05,531 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-04-02 22:37:05,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2023-04-02 22:37:05,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818387613] [2023-04-02 22:37:05,532 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-04-02 22:37:05,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-04-02 22:37:05,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 22:37:05,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-04-02 22:37:05,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=516, Unknown=0, NotChecked=0, Total=600 [2023-04-02 22:37:05,534 INFO L87 Difference]: Start difference. First operand 47 states and 59 transitions. Second operand has 13 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 11 states have internal predecessors, (24), 6 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (14), 5 states have call predecessors, (14), 6 states have call successors, (14) [2023-04-02 22:37:05,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 22:37:05,890 INFO L93 Difference]: Finished difference Result 70 states and 91 transitions. [2023-04-02 22:37:05,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-04-02 22:37:05,891 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 11 states have internal predecessors, (24), 6 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (14), 5 states have call predecessors, (14), 6 states have call successors, (14) Word has length 46 [2023-04-02 22:37:05,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 22:37:05,892 INFO L225 Difference]: With dead ends: 70 [2023-04-02 22:37:05,892 INFO L226 Difference]: Without dead ends: 68 [2023-04-02 22:37:05,893 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 114 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=106, Invalid=650, Unknown=0, NotChecked=0, Total=756 [2023-04-02 22:37:05,894 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 19 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 287 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-02 22:37:05,894 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 100 Invalid, 341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 287 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-02 22:37:05,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2023-04-02 22:37:05,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 55. [2023-04-02 22:37:05,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 27 states have (on average 1.0740740740740742) internal successors, (29), 28 states have internal predecessors, (29), 19 states have call successors, (19), 9 states have call predecessors, (19), 8 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-04-02 22:37:05,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 65 transitions. [2023-04-02 22:37:05,920 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 65 transitions. Word has length 46 [2023-04-02 22:37:05,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 22:37:05,920 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 65 transitions. [2023-04-02 22:37:05,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 11 states have internal predecessors, (24), 6 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (14), 5 states have call predecessors, (14), 6 states have call successors, (14) [2023-04-02 22:37:05,922 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 65 transitions. [2023-04-02 22:37:05,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-04-02 22:37:05,926 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 22:37:05,926 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 22:37:05,935 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-04-02 22:37:06,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-04-02 22:37:06,133 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 22:37:06,134 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 22:37:06,134 INFO L85 PathProgramCache]: Analyzing trace with hash 1775784186, now seen corresponding path program 2 times [2023-04-02 22:37:06,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 22:37:06,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243944151] [2023-04-02 22:37:06,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 22:37:06,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 22:37:06,144 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 22:37:06,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1622688210] [2023-04-02 22:37:06,144 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-04-02 22:37:06,144 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 22:37:06,145 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 22:37:06,146 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 22:37:06,150 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-04-02 22:37:06,202 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-04-02 22:37:06,207 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-02 22:37:06,207 INFO L262 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 20 conjunts are in the unsatisfiable core [2023-04-02 22:37:06,210 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 22:37:06,321 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 14 proven. 4 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-04-02 22:37:06,321 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 22:37:06,464 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 14 proven. 4 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-04-02 22:37:06,465 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 22:37:06,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243944151] [2023-04-02 22:37:06,465 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 22:37:06,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1622688210] [2023-04-02 22:37:06,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1622688210] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 22:37:06,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1299077249] [2023-04-02 22:37:06,467 INFO L159 IcfgInterpreter]: Started Sifa with 22 locations of interest [2023-04-02 22:37:06,467 INFO L166 IcfgInterpreter]: Building call graph [2023-04-02 22:37:06,468 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-02 22:37:06,468 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-02 22:37:06,468 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-02 22:37:06,481 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 9 for LOIs [2023-04-02 22:37:07,661 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2023-04-02 22:37:07,663 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 38 for LOIs [2023-04-02 22:37:07,670 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2023-04-02 22:37:07,673 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-02 22:37:08,299 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1324#(and (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0))' at error location [2023-04-02 22:37:08,299 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-02 22:37:08,299 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-04-02 22:37:08,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-04-02 22:37:08,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016072767] [2023-04-02 22:37:08,300 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-04-02 22:37:08,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-02 22:37:08,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 22:37:08,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-02 22:37:08,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=435, Unknown=0, NotChecked=0, Total=506 [2023-04-02 22:37:08,301 INFO L87 Difference]: Start difference. First operand 55 states and 65 transitions. Second operand has 10 states, 10 states have (on average 1.9) internal successors, (19), 8 states have internal predecessors, (19), 5 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (16), 5 states have call predecessors, (16), 5 states have call successors, (16) [2023-04-02 22:37:08,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 22:37:08,634 INFO L93 Difference]: Finished difference Result 91 states and 121 transitions. [2023-04-02 22:37:08,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-04-02 22:37:08,635 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.9) internal successors, (19), 8 states have internal predecessors, (19), 5 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (16), 5 states have call predecessors, (16), 5 states have call successors, (16) Word has length 51 [2023-04-02 22:37:08,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 22:37:08,636 INFO L225 Difference]: With dead ends: 91 [2023-04-02 22:37:08,636 INFO L226 Difference]: Without dead ends: 89 [2023-04-02 22:37:08,636 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=84, Invalid=516, Unknown=0, NotChecked=0, Total=600 [2023-04-02 22:37:08,637 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 14 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-02 22:37:08,637 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 111 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-02 22:37:08,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2023-04-02 22:37:08,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 78. [2023-04-02 22:37:08,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 36 states have (on average 1.0833333333333333) internal successors, (39), 39 states have internal predecessors, (39), 31 states have call successors, (31), 11 states have call predecessors, (31), 10 states have return successors, (29), 27 states have call predecessors, (29), 29 states have call successors, (29) [2023-04-02 22:37:08,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 99 transitions. [2023-04-02 22:37:08,704 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 99 transitions. Word has length 51 [2023-04-02 22:37:08,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 22:37:08,706 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 99 transitions. [2023-04-02 22:37:08,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.9) internal successors, (19), 8 states have internal predecessors, (19), 5 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (16), 5 states have call predecessors, (16), 5 states have call successors, (16) [2023-04-02 22:37:08,706 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 99 transitions. [2023-04-02 22:37:08,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-04-02 22:37:08,707 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 22:37:08,707 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 22:37:08,723 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-04-02 22:37:08,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 22:37:08,912 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 22:37:08,913 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 22:37:08,913 INFO L85 PathProgramCache]: Analyzing trace with hash 1077796183, now seen corresponding path program 3 times [2023-04-02 22:37:08,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 22:37:08,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083272760] [2023-04-02 22:37:08,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 22:37:08,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 22:37:08,924 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 22:37:08,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1417051482] [2023-04-02 22:37:08,925 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-04-02 22:37:08,925 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 22:37:08,925 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 22:37:08,935 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 22:37:08,937 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-04-02 22:37:09,019 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-04-02 22:37:09,019 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-02 22:37:09,020 INFO L262 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 27 conjunts are in the unsatisfiable core [2023-04-02 22:37:09,022 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 22:37:09,171 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 16 proven. 5 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-04-02 22:37:09,171 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 22:37:09,461 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 16 proven. 5 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-04-02 22:37:09,461 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 22:37:09,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083272760] [2023-04-02 22:37:09,461 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 22:37:09,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1417051482] [2023-04-02 22:37:09,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1417051482] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 22:37:09,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1860879797] [2023-04-02 22:37:09,463 INFO L159 IcfgInterpreter]: Started Sifa with 22 locations of interest [2023-04-02 22:37:09,463 INFO L166 IcfgInterpreter]: Building call graph [2023-04-02 22:37:09,463 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-02 22:37:09,463 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-02 22:37:09,463 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-02 22:37:09,476 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 9 for LOIs [2023-04-02 22:37:10,754 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2023-04-02 22:37:10,757 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 38 for LOIs [2023-04-02 22:37:10,763 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2023-04-02 22:37:10,766 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-02 22:37:11,250 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1956#(and (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0))' at error location [2023-04-02 22:37:11,250 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-02 22:37:11,250 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-04-02 22:37:11,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 11 [2023-04-02 22:37:11,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026330741] [2023-04-02 22:37:11,251 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-04-02 22:37:11,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-02 22:37:11,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 22:37:11,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-02 22:37:11,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=477, Unknown=0, NotChecked=0, Total=552 [2023-04-02 22:37:11,252 INFO L87 Difference]: Start difference. First operand 78 states and 99 transitions. Second operand has 11 states, 10 states have (on average 2.0) internal successors, (20), 9 states have internal predecessors, (20), 5 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (19), 5 states have call predecessors, (19), 5 states have call successors, (19) [2023-04-02 22:37:11,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 22:37:11,530 INFO L93 Difference]: Finished difference Result 94 states and 113 transitions. [2023-04-02 22:37:11,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-04-02 22:37:11,531 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.0) internal successors, (20), 9 states have internal predecessors, (20), 5 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (19), 5 states have call predecessors, (19), 5 states have call successors, (19) Word has length 56 [2023-04-02 22:37:11,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 22:37:11,533 INFO L225 Difference]: With dead ends: 94 [2023-04-02 22:37:11,533 INFO L226 Difference]: Without dead ends: 82 [2023-04-02 22:37:11,534 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=89, Invalid=561, Unknown=0, NotChecked=0, Total=650 [2023-04-02 22:37:11,534 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 11 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-02 22:37:11,535 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 137 Invalid, 265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-02 22:37:11,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2023-04-02 22:37:11,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 79. [2023-04-02 22:37:11,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 42 states have (on average 1.0714285714285714) internal successors, (45), 44 states have internal predecessors, (45), 24 states have call successors, (24), 13 states have call predecessors, (24), 12 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2023-04-02 22:37:11,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 91 transitions. [2023-04-02 22:37:11,581 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 91 transitions. Word has length 56 [2023-04-02 22:37:11,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 22:37:11,581 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 91 transitions. [2023-04-02 22:37:11,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.0) internal successors, (20), 9 states have internal predecessors, (20), 5 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (19), 5 states have call predecessors, (19), 5 states have call successors, (19) [2023-04-02 22:37:11,581 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 91 transitions. [2023-04-02 22:37:11,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-04-02 22:37:11,589 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 22:37:11,589 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 11, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 22:37:11,597 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-04-02 22:37:11,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 22:37:11,795 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 22:37:11,795 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 22:37:11,795 INFO L85 PathProgramCache]: Analyzing trace with hash -72955691, now seen corresponding path program 1 times [2023-04-02 22:37:11,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 22:37:11,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868230200] [2023-04-02 22:37:11,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 22:37:11,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 22:37:11,807 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 22:37:11,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [114297768] [2023-04-02 22:37:11,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 22:37:11,808 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 22:37:11,808 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 22:37:11,809 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 22:37:11,814 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-04-02 22:37:11,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 22:37:11,860 INFO L262 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 26 conjunts are in the unsatisfiable core [2023-04-02 22:37:11,862 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 22:37:12,082 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 22 proven. 7 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2023-04-02 22:37:12,082 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 22:37:12,298 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 22 proven. 7 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2023-04-02 22:37:12,298 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 22:37:12,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868230200] [2023-04-02 22:37:12,298 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 22:37:12,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [114297768] [2023-04-02 22:37:12,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [114297768] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 22:37:12,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [687531590] [2023-04-02 22:37:12,300 INFO L159 IcfgInterpreter]: Started Sifa with 24 locations of interest [2023-04-02 22:37:12,300 INFO L166 IcfgInterpreter]: Building call graph [2023-04-02 22:37:12,301 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-02 22:37:12,301 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-02 22:37:12,301 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-02 22:37:12,319 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 9 for LOIs [2023-04-02 22:37:13,107 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2023-04-02 22:37:13,113 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 38 for LOIs [2023-04-02 22:37:13,119 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2023-04-02 22:37:13,122 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-02 22:37:13,596 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2681#(and (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0))' at error location [2023-04-02 22:37:13,596 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-02 22:37:13,596 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-04-02 22:37:13,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 14 [2023-04-02 22:37:13,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269015396] [2023-04-02 22:37:13,596 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-04-02 22:37:13,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-04-02 22:37:13,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 22:37:13,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-04-02 22:37:13,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=657, Unknown=0, NotChecked=0, Total=756 [2023-04-02 22:37:13,598 INFO L87 Difference]: Start difference. First operand 79 states and 91 transitions. Second operand has 14 states, 11 states have (on average 2.0) internal successors, (22), 11 states have internal predecessors, (22), 7 states have call successors, (27), 3 states have call predecessors, (27), 2 states have return successors, (25), 8 states have call predecessors, (25), 7 states have call successors, (25) [2023-04-02 22:37:14,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 22:37:14,204 INFO L93 Difference]: Finished difference Result 98 states and 115 transitions. [2023-04-02 22:37:14,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-04-02 22:37:14,205 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 11 states have (on average 2.0) internal successors, (22), 11 states have internal predecessors, (22), 7 states have call successors, (27), 3 states have call predecessors, (27), 2 states have return successors, (25), 8 states have call predecessors, (25), 7 states have call successors, (25) Word has length 72 [2023-04-02 22:37:14,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 22:37:14,207 INFO L225 Difference]: With dead ends: 98 [2023-04-02 22:37:14,207 INFO L226 Difference]: Without dead ends: 96 [2023-04-02 22:37:14,207 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 188 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=149, Invalid=973, Unknown=0, NotChecked=0, Total=1122 [2023-04-02 22:37:14,208 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 18 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-02 22:37:14,208 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 120 Invalid, 292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-02 22:37:14,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2023-04-02 22:37:14,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 92. [2023-04-02 22:37:14,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 49 states have (on average 1.0816326530612246) internal successors, (53), 51 states have internal predecessors, (53), 28 states have call successors, (28), 15 states have call predecessors, (28), 14 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) [2023-04-02 22:37:14,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 107 transitions. [2023-04-02 22:37:14,273 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 107 transitions. Word has length 72 [2023-04-02 22:37:14,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 22:37:14,276 INFO L495 AbstractCegarLoop]: Abstraction has 92 states and 107 transitions. [2023-04-02 22:37:14,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 11 states have (on average 2.0) internal successors, (22), 11 states have internal predecessors, (22), 7 states have call successors, (27), 3 states have call predecessors, (27), 2 states have return successors, (25), 8 states have call predecessors, (25), 7 states have call successors, (25) [2023-04-02 22:37:14,277 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 107 transitions. [2023-04-02 22:37:14,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-04-02 22:37:14,277 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 22:37:14,278 INFO L195 NwaCegarLoop]: trace histogram [13, 12, 12, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 22:37:14,287 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-04-02 22:37:14,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 22:37:14,484 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 22:37:14,484 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 22:37:14,484 INFO L85 PathProgramCache]: Analyzing trace with hash 638285148, now seen corresponding path program 1 times [2023-04-02 22:37:14,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 22:37:14,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821459607] [2023-04-02 22:37:14,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 22:37:14,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 22:37:14,513 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 22:37:14,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [658928144] [2023-04-02 22:37:14,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 22:37:14,513 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 22:37:14,513 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 22:37:14,516 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 22:37:14,518 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-04-02 22:37:14,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 22:37:14,606 INFO L262 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 22 conjunts are in the unsatisfiable core [2023-04-02 22:37:14,608 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 22:37:14,805 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 24 proven. 7 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-04-02 22:37:14,805 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 22:37:14,980 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 22:37:14,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821459607] [2023-04-02 22:37:14,981 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 22:37:14,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [658928144] [2023-04-02 22:37:14,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [658928144] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 22:37:14,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [783128516] [2023-04-02 22:37:14,983 INFO L159 IcfgInterpreter]: Started Sifa with 25 locations of interest [2023-04-02 22:37:14,983 INFO L166 IcfgInterpreter]: Building call graph [2023-04-02 22:37:14,983 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-02 22:37:14,983 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-02 22:37:14,983 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-02 22:37:15,000 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 9 for LOIs [2023-04-02 22:37:16,054 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2023-04-02 22:37:16,056 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 38 for LOIs [2023-04-02 22:37:16,062 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2023-04-02 22:37:16,065 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-02 22:37:16,635 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3366#(and (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0))' at error location [2023-04-02 22:37:16,635 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-02 22:37:16,635 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-04-02 22:37:16,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2023-04-02 22:37:16,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158073393] [2023-04-02 22:37:16,636 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-04-02 22:37:16,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-02 22:37:16,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 22:37:16,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-02 22:37:16,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=658, Unknown=0, NotChecked=0, Total=756 [2023-04-02 22:37:16,638 INFO L87 Difference]: Start difference. First operand 92 states and 107 transitions. Second operand has 9 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 4 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 5 states have call predecessors, (14), 4 states have call successors, (14) [2023-04-02 22:37:16,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 22:37:16,826 INFO L93 Difference]: Finished difference Result 101 states and 117 transitions. [2023-04-02 22:37:16,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-04-02 22:37:16,827 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 4 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 5 states have call predecessors, (14), 4 states have call successors, (14) Word has length 77 [2023-04-02 22:37:16,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 22:37:16,832 INFO L225 Difference]: With dead ends: 101 [2023-04-02 22:37:16,832 INFO L226 Difference]: Without dead ends: 92 [2023-04-02 22:37:16,835 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 168 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=121, Invalid=809, Unknown=0, NotChecked=0, Total=930 [2023-04-02 22:37:16,837 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 10 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 22:37:16,837 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 90 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 22:37:16,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2023-04-02 22:37:16,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2023-04-02 22:37:16,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 49 states have (on average 1.0612244897959184) internal successors, (52), 51 states have internal predecessors, (52), 28 states have call successors, (28), 15 states have call predecessors, (28), 14 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) [2023-04-02 22:37:16,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 106 transitions. [2023-04-02 22:37:16,874 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 106 transitions. Word has length 77 [2023-04-02 22:37:16,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 22:37:16,874 INFO L495 AbstractCegarLoop]: Abstraction has 92 states and 106 transitions. [2023-04-02 22:37:16,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 4 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 5 states have call predecessors, (14), 4 states have call successors, (14) [2023-04-02 22:37:16,875 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 106 transitions. [2023-04-02 22:37:16,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-04-02 22:37:16,875 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 22:37:16,876 INFO L195 NwaCegarLoop]: trace histogram [18, 17, 17, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 22:37:16,884 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-04-02 22:37:17,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 22:37:17,081 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 22:37:17,082 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 22:37:17,082 INFO L85 PathProgramCache]: Analyzing trace with hash 914576601, now seen corresponding path program 2 times [2023-04-02 22:37:17,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 22:37:17,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632348168] [2023-04-02 22:37:17,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 22:37:17,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 22:37:17,092 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 22:37:17,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [155514616] [2023-04-02 22:37:17,093 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-04-02 22:37:17,093 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 22:37:17,093 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 22:37:17,118 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 22:37:17,135 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-04-02 22:37:17,196 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-04-02 22:37:17,196 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-02 22:37:17,214 INFO L262 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 43 conjunts are in the unsatisfiable core [2023-04-02 22:37:17,217 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 22:37:17,706 INFO L134 CoverageAnalysis]: Checked inductivity of 599 backedges. 107 proven. 38 refuted. 0 times theorem prover too weak. 454 trivial. 0 not checked. [2023-04-02 22:37:17,707 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 22:37:18,335 INFO L134 CoverageAnalysis]: Checked inductivity of 599 backedges. 107 proven. 38 refuted. 0 times theorem prover too weak. 454 trivial. 0 not checked. [2023-04-02 22:37:18,335 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 22:37:18,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632348168] [2023-04-02 22:37:18,335 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 22:37:18,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [155514616] [2023-04-02 22:37:18,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [155514616] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 22:37:18,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1026624688] [2023-04-02 22:37:18,337 INFO L159 IcfgInterpreter]: Started Sifa with 25 locations of interest [2023-04-02 22:37:18,337 INFO L166 IcfgInterpreter]: Building call graph [2023-04-02 22:37:18,337 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-02 22:37:18,338 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-02 22:37:18,338 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-02 22:37:18,349 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 9 for LOIs [2023-04-02 22:37:19,160 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2023-04-02 22:37:19,163 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 38 for LOIs [2023-04-02 22:37:19,169 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2023-04-02 22:37:19,171 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-02 22:37:20,466 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4317#(and (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0))' at error location [2023-04-02 22:37:20,466 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-02 22:37:20,466 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-04-02 22:37:20,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 19 [2023-04-02 22:37:20,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038887537] [2023-04-02 22:37:20,467 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-04-02 22:37:20,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-04-02 22:37:20,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 22:37:20,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-04-02 22:37:20,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=858, Unknown=0, NotChecked=0, Total=992 [2023-04-02 22:37:20,468 INFO L87 Difference]: Start difference. First operand 92 states and 106 transitions. Second operand has 19 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 16 states have internal predecessors, (31), 12 states have call successors, (40), 3 states have call predecessors, (40), 2 states have return successors, (37), 10 states have call predecessors, (37), 10 states have call successors, (37) [2023-04-02 22:37:28,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 22:37:28,926 INFO L93 Difference]: Finished difference Result 139 states and 168 transitions. [2023-04-02 22:37:28,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-04-02 22:37:28,926 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 16 states have internal predecessors, (31), 12 states have call successors, (40), 3 states have call predecessors, (40), 2 states have return successors, (37), 10 states have call predecessors, (37), 10 states have call successors, (37) Word has length 104 [2023-04-02 22:37:28,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 22:37:28,928 INFO L225 Difference]: With dead ends: 139 [2023-04-02 22:37:28,928 INFO L226 Difference]: Without dead ends: 125 [2023-04-02 22:37:28,928 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 279 SyntacticMatches, 3 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 462 ImplicationChecksByTransitivity, 9.4s TimeCoverageRelationStatistics Valid=250, Invalid=1388, Unknown=2, NotChecked=0, Total=1640 [2023-04-02 22:37:28,929 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 34 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 361 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 361 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-02 22:37:28,929 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 93 Invalid, 436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 361 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-02 22:37:28,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2023-04-02 22:37:28,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2023-04-02 22:37:28,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 64 states have (on average 1.078125) internal successors, (69), 66 states have internal predecessors, (69), 43 states have call successors, (43), 18 states have call predecessors, (43), 17 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2023-04-02 22:37:28,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 152 transitions. [2023-04-02 22:37:28,988 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 152 transitions. Word has length 104 [2023-04-02 22:37:28,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 22:37:28,989 INFO L495 AbstractCegarLoop]: Abstraction has 125 states and 152 transitions. [2023-04-02 22:37:28,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 16 states have internal predecessors, (31), 12 states have call successors, (40), 3 states have call predecessors, (40), 2 states have return successors, (37), 10 states have call predecessors, (37), 10 states have call successors, (37) [2023-04-02 22:37:28,989 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 152 transitions. [2023-04-02 22:37:28,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-04-02 22:37:28,990 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 22:37:28,990 INFO L195 NwaCegarLoop]: trace histogram [18, 17, 17, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 22:37:28,995 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-04-02 22:37:29,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 22:37:29,193 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 22:37:29,193 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 22:37:29,193 INFO L85 PathProgramCache]: Analyzing trace with hash 211428058, now seen corresponding path program 4 times [2023-04-02 22:37:29,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 22:37:29,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536184023] [2023-04-02 22:37:29,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 22:37:29,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 22:37:29,202 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 22:37:29,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [29261820] [2023-04-02 22:37:29,202 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-04-02 22:37:29,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 22:37:29,202 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 22:37:29,203 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 22:37:29,206 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-04-02 22:37:29,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 22:37:29,258 INFO L262 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 42 conjunts are in the unsatisfiable core [2023-04-02 22:37:29,260 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 22:37:29,476 INFO L134 CoverageAnalysis]: Checked inductivity of 611 backedges. 77 proven. 80 refuted. 0 times theorem prover too weak. 454 trivial. 0 not checked. [2023-04-02 22:37:29,476 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 22:37:29,982 INFO L134 CoverageAnalysis]: Checked inductivity of 611 backedges. 79 proven. 78 refuted. 0 times theorem prover too weak. 454 trivial. 0 not checked. [2023-04-02 22:37:29,982 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 22:37:29,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536184023] [2023-04-02 22:37:29,983 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 22:37:29,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [29261820] [2023-04-02 22:37:29,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [29261820] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 22:37:29,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1193941816] [2023-04-02 22:37:29,985 INFO L159 IcfgInterpreter]: Started Sifa with 22 locations of interest [2023-04-02 22:37:29,985 INFO L166 IcfgInterpreter]: Building call graph [2023-04-02 22:37:29,986 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-02 22:37:29,986 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-02 22:37:29,986 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-02 22:37:29,998 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 9 for LOIs [2023-04-02 22:37:30,909 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2023-04-02 22:37:30,912 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 38 for LOIs [2023-04-02 22:37:30,919 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2023-04-02 22:37:30,921 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-02 22:37:31,490 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5401#(and (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0))' at error location [2023-04-02 22:37:31,490 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-02 22:37:31,491 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-04-02 22:37:31,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2023-04-02 22:37:31,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521456603] [2023-04-02 22:37:31,493 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-04-02 22:37:31,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-04-02 22:37:31,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 22:37:31,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-04-02 22:37:31,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=816, Unknown=0, NotChecked=0, Total=930 [2023-04-02 22:37:31,496 INFO L87 Difference]: Start difference. First operand 125 states and 152 transitions. Second operand has 19 states, 17 states have (on average 1.8823529411764706) internal successors, (32), 15 states have internal predecessors, (32), 12 states have call successors, (39), 3 states have call predecessors, (39), 2 states have return successors, (36), 11 states have call predecessors, (36), 10 states have call successors, (36) [2023-04-02 22:37:32,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 22:37:32,282 INFO L93 Difference]: Finished difference Result 133 states and 160 transitions. [2023-04-02 22:37:32,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-04-02 22:37:32,282 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 1.8823529411764706) internal successors, (32), 15 states have internal predecessors, (32), 12 states have call successors, (39), 3 states have call predecessors, (39), 2 states have return successors, (36), 11 states have call predecessors, (36), 10 states have call successors, (36) Word has length 105 [2023-04-02 22:37:32,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 22:37:32,284 INFO L225 Difference]: With dead ends: 133 [2023-04-02 22:37:32,284 INFO L226 Difference]: Without dead ends: 131 [2023-04-02 22:37:32,284 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 285 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 248 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=180, Invalid=1152, Unknown=0, NotChecked=0, Total=1332 [2023-04-02 22:37:32,285 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 25 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 537 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 537 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-02 22:37:32,285 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 146 Invalid, 580 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 537 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-02 22:37:32,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2023-04-02 22:37:32,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 129. [2023-04-02 22:37:32,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 67 states have (on average 1.0746268656716418) internal successors, (72), 69 states have internal predecessors, (72), 43 states have call successors, (43), 19 states have call predecessors, (43), 18 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2023-04-02 22:37:32,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 155 transitions. [2023-04-02 22:37:32,355 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 155 transitions. Word has length 105 [2023-04-02 22:37:32,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 22:37:32,355 INFO L495 AbstractCegarLoop]: Abstraction has 129 states and 155 transitions. [2023-04-02 22:37:32,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 1.8823529411764706) internal successors, (32), 15 states have internal predecessors, (32), 12 states have call successors, (39), 3 states have call predecessors, (39), 2 states have return successors, (36), 11 states have call predecessors, (36), 10 states have call successors, (36) [2023-04-02 22:37:32,356 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 155 transitions. [2023-04-02 22:37:32,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-04-02 22:37:32,357 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 22:37:32,357 INFO L195 NwaCegarLoop]: trace histogram [22, 21, 21, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 22:37:32,361 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-04-02 22:37:32,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-04-02 22:37:32,558 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 22:37:32,558 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 22:37:32,558 INFO L85 PathProgramCache]: Analyzing trace with hash 769975029, now seen corresponding path program 2 times [2023-04-02 22:37:32,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 22:37:32,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770222264] [2023-04-02 22:37:32,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 22:37:32,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 22:37:32,566 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 22:37:32,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [124895694] [2023-04-02 22:37:32,566 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-04-02 22:37:32,566 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 22:37:32,566 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 22:37:32,567 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 22:37:32,573 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-04-02 22:37:32,821 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-04-02 22:37:32,821 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-02 22:37:32,822 INFO L262 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 22 conjunts are in the unsatisfiable core [2023-04-02 22:37:32,824 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 22:37:33,040 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 107 proven. 16 refuted. 0 times theorem prover too weak. 801 trivial. 0 not checked. [2023-04-02 22:37:33,040 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 22:37:33,073 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 22:37:33,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770222264] [2023-04-02 22:37:33,073 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 22:37:33,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [124895694] [2023-04-02 22:37:33,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [124895694] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 22:37:33,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2134586457] [2023-04-02 22:37:33,074 INFO L159 IcfgInterpreter]: Started Sifa with 24 locations of interest [2023-04-02 22:37:33,074 INFO L166 IcfgInterpreter]: Building call graph [2023-04-02 22:37:33,075 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-02 22:37:33,075 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-02 22:37:33,075 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-02 22:37:33,087 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 9 for LOIs [2023-04-02 22:37:33,970 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2023-04-02 22:37:33,972 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 38 for LOIs [2023-04-02 22:37:33,978 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2023-04-02 22:37:33,981 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-02 22:37:34,596 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '6231#(and (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0))' at error location [2023-04-02 22:37:34,596 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-02 22:37:34,597 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-04-02 22:37:34,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2023-04-02 22:37:34,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982931305] [2023-04-02 22:37:34,597 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-04-02 22:37:34,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-02 22:37:34,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 22:37:34,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-02 22:37:34,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=559, Unknown=0, NotChecked=0, Total=650 [2023-04-02 22:37:34,598 INFO L87 Difference]: Start difference. First operand 129 states and 155 transitions. Second operand has 11 states, 9 states have (on average 2.0) internal successors, (18), 9 states have internal predecessors, (18), 5 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 5 states have call successors, (13) [2023-04-02 22:37:34,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 22:37:34,851 INFO L93 Difference]: Finished difference Result 135 states and 160 transitions. [2023-04-02 22:37:34,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-04-02 22:37:34,851 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 2.0) internal successors, (18), 9 states have internal predecessors, (18), 5 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 5 states have call successors, (13) Word has length 126 [2023-04-02 22:37:34,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 22:37:34,855 INFO L225 Difference]: With dead ends: 135 [2023-04-02 22:37:34,855 INFO L226 Difference]: Without dead ends: 129 [2023-04-02 22:37:34,855 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 231 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=106, Invalid=650, Unknown=0, NotChecked=0, Total=756 [2023-04-02 22:37:34,856 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 13 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 22:37:34,856 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 64 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 22:37:34,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2023-04-02 22:37:34,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2023-04-02 22:37:34,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 69 states have (on average 1.0144927536231885) internal successors, (70), 69 states have internal predecessors, (70), 41 states have call successors, (41), 20 states have call predecessors, (41), 18 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2023-04-02 22:37:34,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 150 transitions. [2023-04-02 22:37:34,927 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 150 transitions. Word has length 126 [2023-04-02 22:37:34,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 22:37:34,927 INFO L495 AbstractCegarLoop]: Abstraction has 129 states and 150 transitions. [2023-04-02 22:37:34,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 2.0) internal successors, (18), 9 states have internal predecessors, (18), 5 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 5 states have call successors, (13) [2023-04-02 22:37:34,927 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 150 transitions. [2023-04-02 22:37:34,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2023-04-02 22:37:34,929 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 22:37:34,929 INFO L195 NwaCegarLoop]: trace histogram [38, 37, 37, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 22:37:34,937 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-04-02 22:37:35,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-04-02 22:37:35,132 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 22:37:35,132 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 22:37:35,132 INFO L85 PathProgramCache]: Analyzing trace with hash -47075047, now seen corresponding path program 3 times [2023-04-02 22:37:35,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 22:37:35,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910077904] [2023-04-02 22:37:35,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 22:37:35,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 22:37:35,148 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 22:37:35,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [299586206] [2023-04-02 22:37:35,148 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-04-02 22:37:35,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 22:37:35,148 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 22:37:35,149 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 22:37:35,160 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-04-02 22:37:35,236 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-04-02 22:37:35,236 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-02 22:37:35,238 INFO L262 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 55 conjunts are in the unsatisfiable core [2023-04-02 22:37:35,242 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 22:37:35,587 INFO L134 CoverageAnalysis]: Checked inductivity of 2885 backedges. 73 proven. 256 refuted. 0 times theorem prover too weak. 2556 trivial. 0 not checked. [2023-04-02 22:37:35,587 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 22:37:35,709 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 22:37:35,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910077904] [2023-04-02 22:37:35,709 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 22:37:35,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [299586206] [2023-04-02 22:37:35,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [299586206] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 22:37:35,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1794005074] [2023-04-02 22:37:35,711 INFO L159 IcfgInterpreter]: Started Sifa with 25 locations of interest [2023-04-02 22:37:35,711 INFO L166 IcfgInterpreter]: Building call graph [2023-04-02 22:37:35,711 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-02 22:37:35,711 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-02 22:37:35,711 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-02 22:37:35,720 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 9 for LOIs [2023-04-02 22:37:36,530 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2023-04-02 22:37:36,532 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 38 for LOIs [2023-04-02 22:37:36,536 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2023-04-02 22:37:36,539 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-02 22:37:37,182 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '7431#(and (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0))' at error location [2023-04-02 22:37:37,182 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-02 22:37:37,182 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-04-02 22:37:37,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2023-04-02 22:37:37,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677767341] [2023-04-02 22:37:37,183 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-04-02 22:37:37,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-04-02 22:37:37,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 22:37:37,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-04-02 22:37:37,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=829, Unknown=0, NotChecked=0, Total=930 [2023-04-02 22:37:37,184 INFO L87 Difference]: Start difference. First operand 129 states and 150 transitions. Second operand has 14 states, 13 states have (on average 2.076923076923077) internal successors, (27), 13 states have internal predecessors, (27), 9 states have call successors, (41), 2 states have call predecessors, (41), 2 states have return successors, (39), 9 states have call predecessors, (39), 9 states have call successors, (39) [2023-04-02 22:37:37,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 22:37:37,845 INFO L93 Difference]: Finished difference Result 159 states and 183 transitions. [2023-04-02 22:37:37,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-04-02 22:37:37,845 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.076923076923077) internal successors, (27), 13 states have internal predecessors, (27), 9 states have call successors, (41), 2 states have call predecessors, (41), 2 states have return successors, (39), 9 states have call predecessors, (39), 9 states have call successors, (39) Word has length 212 [2023-04-02 22:37:37,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 22:37:37,846 INFO L225 Difference]: With dead ends: 159 [2023-04-02 22:37:37,846 INFO L226 Difference]: Without dead ends: 148 [2023-04-02 22:37:37,847 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 469 GetRequests, 435 SyntacticMatches, 3 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=116, Invalid=940, Unknown=0, NotChecked=0, Total=1056 [2023-04-02 22:37:37,847 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 13 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 973 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 203 SdHoareTripleChecker+Invalid, 1021 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 973 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-02 22:37:37,847 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 203 Invalid, 1021 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 973 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-02 22:37:37,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2023-04-02 22:37:37,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148. [2023-04-02 22:37:37,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 80 states have (on average 1.0125) internal successors, (81), 80 states have internal predecessors, (81), 46 states have call successors, (46), 23 states have call predecessors, (46), 21 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2023-04-02 22:37:37,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 171 transitions. [2023-04-02 22:37:37,915 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 171 transitions. Word has length 212 [2023-04-02 22:37:37,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 22:37:37,916 INFO L495 AbstractCegarLoop]: Abstraction has 148 states and 171 transitions. [2023-04-02 22:37:37,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.076923076923077) internal successors, (27), 13 states have internal predecessors, (27), 9 states have call successors, (41), 2 states have call predecessors, (41), 2 states have return successors, (39), 9 states have call predecessors, (39), 9 states have call successors, (39) [2023-04-02 22:37:37,916 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 171 transitions. [2023-04-02 22:37:37,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2023-04-02 22:37:37,918 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 22:37:37,919 INFO L195 NwaCegarLoop]: trace histogram [43, 42, 42, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 22:37:37,924 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-04-02 22:37:38,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-04-02 22:37:38,120 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 22:37:38,120 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 22:37:38,120 INFO L85 PathProgramCache]: Analyzing trace with hash 245541628, now seen corresponding path program 4 times [2023-04-02 22:37:38,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 22:37:38,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875567705] [2023-04-02 22:37:38,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 22:37:38,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 22:37:38,133 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 22:37:38,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [377488770] [2023-04-02 22:37:38,133 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-04-02 22:37:38,133 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 22:37:38,134 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 22:37:38,135 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 22:37:38,140 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-04-02 22:37:38,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 22:37:38,226 INFO L262 TraceCheckSpWp]: Trace formula consists of 515 conjuncts, 61 conjunts are in the unsatisfiable core [2023-04-02 22:37:38,231 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 22:37:38,638 INFO L134 CoverageAnalysis]: Checked inductivity of 3724 backedges. 83 proven. 320 refuted. 0 times theorem prover too weak. 3321 trivial. 0 not checked. [2023-04-02 22:37:38,638 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 22:37:38,787 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 22:37:38,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875567705] [2023-04-02 22:37:38,787 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 22:37:38,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [377488770] [2023-04-02 22:37:38,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [377488770] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 22:37:38,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [790438325] [2023-04-02 22:37:38,789 INFO L159 IcfgInterpreter]: Started Sifa with 25 locations of interest [2023-04-02 22:37:38,789 INFO L166 IcfgInterpreter]: Building call graph [2023-04-02 22:37:38,789 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-02 22:37:38,789 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-02 22:37:38,790 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-02 22:37:38,800 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 9 for LOIs [2023-04-02 22:37:39,886 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2023-04-02 22:37:39,890 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 38 for LOIs [2023-04-02 22:37:39,898 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2023-04-02 22:37:39,902 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-02 22:37:40,801 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '8777#(and (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0))' at error location [2023-04-02 22:37:40,802 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-02 22:37:40,802 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-04-02 22:37:40,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2023-04-02 22:37:40,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582970931] [2023-04-02 22:37:40,802 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-04-02 22:37:40,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-04-02 22:37:40,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 22:37:40,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-04-02 22:37:40,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=888, Unknown=0, NotChecked=0, Total=992 [2023-04-02 22:37:40,803 INFO L87 Difference]: Start difference. First operand 148 states and 171 transitions. Second operand has 15 states, 14 states have (on average 2.0714285714285716) internal successors, (29), 14 states have internal predecessors, (29), 10 states have call successors, (46), 2 states have call predecessors, (46), 2 states have return successors, (44), 10 states have call predecessors, (44), 10 states have call successors, (44) [2023-04-02 22:37:41,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 22:37:41,478 INFO L93 Difference]: Finished difference Result 178 states and 204 transitions. [2023-04-02 22:37:41,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-02 22:37:41,478 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.0714285714285716) internal successors, (29), 14 states have internal predecessors, (29), 10 states have call successors, (46), 2 states have call predecessors, (46), 2 states have return successors, (44), 10 states have call predecessors, (44), 10 states have call successors, (44) Word has length 239 [2023-04-02 22:37:41,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 22:37:41,479 INFO L225 Difference]: With dead ends: 178 [2023-04-02 22:37:41,479 INFO L226 Difference]: Without dead ends: 167 [2023-04-02 22:37:41,480 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 523 GetRequests, 488 SyntacticMatches, 3 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=119, Invalid=1003, Unknown=0, NotChecked=0, Total=1122 [2023-04-02 22:37:41,480 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 13 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 1192 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 1246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 1192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-02 22:37:41,480 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 234 Invalid, 1246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 1192 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-02 22:37:41,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2023-04-02 22:37:41,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 167. [2023-04-02 22:37:41,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 91 states have (on average 1.010989010989011) internal successors, (92), 91 states have internal predecessors, (92), 51 states have call successors, (51), 26 states have call predecessors, (51), 24 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2023-04-02 22:37:41,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 192 transitions. [2023-04-02 22:37:41,555 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 192 transitions. Word has length 239 [2023-04-02 22:37:41,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 22:37:41,555 INFO L495 AbstractCegarLoop]: Abstraction has 167 states and 192 transitions. [2023-04-02 22:37:41,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.0714285714285716) internal successors, (29), 14 states have internal predecessors, (29), 10 states have call successors, (46), 2 states have call predecessors, (46), 2 states have return successors, (44), 10 states have call predecessors, (44), 10 states have call successors, (44) [2023-04-02 22:37:41,556 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 192 transitions. [2023-04-02 22:37:41,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2023-04-02 22:37:41,558 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 22:37:41,558 INFO L195 NwaCegarLoop]: trace histogram [48, 47, 47, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 22:37:41,565 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-04-02 22:37:41,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-04-02 22:37:41,765 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 22:37:41,765 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 22:37:41,765 INFO L85 PathProgramCache]: Analyzing trace with hash 1891081017, now seen corresponding path program 5 times [2023-04-02 22:37:41,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 22:37:41,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337454730] [2023-04-02 22:37:41,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 22:37:41,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 22:37:41,780 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 22:37:41,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [22164719] [2023-04-02 22:37:41,780 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-04-02 22:37:41,780 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 22:37:41,780 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 22:37:41,781 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 22:37:41,783 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-04-02 22:37:41,957 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-04-02 22:37:41,957 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-02 22:37:41,958 INFO L262 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 43 conjunts are in the unsatisfiable core [2023-04-02 22:37:41,962 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 22:37:44,725 INFO L134 CoverageAnalysis]: Checked inductivity of 4670 backedges. 531 proven. 69 refuted. 0 times theorem prover too weak. 4070 trivial. 0 not checked. [2023-04-02 22:37:44,725 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 22:37:46,771 INFO L134 CoverageAnalysis]: Checked inductivity of 4670 backedges. 388 proven. 39 refuted. 0 times theorem prover too weak. 4243 trivial. 0 not checked. [2023-04-02 22:37:46,771 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 22:37:46,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337454730] [2023-04-02 22:37:46,771 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 22:37:46,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [22164719] [2023-04-02 22:37:46,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [22164719] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 22:37:46,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2027671841] [2023-04-02 22:37:46,773 INFO L159 IcfgInterpreter]: Started Sifa with 25 locations of interest [2023-04-02 22:37:46,773 INFO L166 IcfgInterpreter]: Building call graph [2023-04-02 22:37:46,773 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-02 22:37:46,773 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-02 22:37:46,773 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-02 22:37:46,784 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 9 for LOIs [2023-04-02 22:37:47,490 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2023-04-02 22:37:47,491 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 38 for LOIs [2023-04-02 22:37:47,495 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2023-04-02 22:37:47,497 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-02 22:37:48,156 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '10930#(and (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0))' at error location [2023-04-02 22:37:48,157 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-02 22:37:48,157 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-04-02 22:37:48,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 9] total 20 [2023-04-02 22:37:48,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634150156] [2023-04-02 22:37:48,157 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-04-02 22:37:48,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-04-02 22:37:48,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 22:37:48,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-04-02 22:37:48,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=915, Unknown=0, NotChecked=0, Total=1056 [2023-04-02 22:37:48,159 INFO L87 Difference]: Start difference. First operand 167 states and 192 transitions. Second operand has 20 states, 16 states have (on average 2.0) internal successors, (32), 15 states have internal predecessors, (32), 10 states have call successors, (35), 3 states have call predecessors, (35), 3 states have return successors, (34), 9 states have call predecessors, (34), 10 states have call successors, (34) [2023-04-02 22:37:49,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 22:37:49,740 INFO L93 Difference]: Finished difference Result 167 states and 192 transitions. [2023-04-02 22:37:49,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-04-02 22:37:49,740 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 16 states have (on average 2.0) internal successors, (32), 15 states have internal predecessors, (32), 10 states have call successors, (35), 3 states have call predecessors, (35), 3 states have return successors, (34), 9 states have call predecessors, (34), 10 states have call successors, (34) Word has length 266 [2023-04-02 22:37:49,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 22:37:49,741 INFO L225 Difference]: With dead ends: 167 [2023-04-02 22:37:49,741 INFO L226 Difference]: Without dead ends: 0 [2023-04-02 22:37:49,742 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 801 GetRequests, 764 SyntacticMatches, 3 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 381 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=176, Invalid=1084, Unknown=0, NotChecked=0, Total=1260 [2023-04-02 22:37:49,742 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 17 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-04-02 22:37:49,743 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 57 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-04-02 22:37:49,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-04-02 22:37:49,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-04-02 22:37:49,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-04-02 22:37:49,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-04-02 22:37:49,743 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 266 [2023-04-02 22:37:49,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 22:37:49,744 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-04-02 22:37:49,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 16 states have (on average 2.0) internal successors, (32), 15 states have internal predecessors, (32), 10 states have call successors, (35), 3 states have call predecessors, (35), 3 states have return successors, (34), 9 states have call predecessors, (34), 10 states have call successors, (34) [2023-04-02 22:37:49,744 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-04-02 22:37:49,744 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-04-02 22:37:49,746 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-04-02 22:37:49,751 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-04-02 22:37:49,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-04-02 22:37:49,948 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-04-02 22:37:57,892 INFO L899 garLoopResultBuilder]: For program point reach_errorEXIT(line 8) no Hoare annotation was computed. [2023-04-02 22:37:57,893 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line 8) no Hoare annotation was computed. [2023-04-02 22:37:57,893 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 11 13) the Hoare annotation is: true [2023-04-02 22:37:57,893 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 11 13) no Hoare annotation was computed. [2023-04-02 22:37:57,893 INFO L895 garLoopResultBuilder]: At program point L33-2(lines 33 46) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (or (not (= (select .cse0 0) 48)) (not (= |#NULL.offset| 0)) (not (= 2 (select |#length| 1))) (not (= (select |#valid| 3) 1)) (not (= (select |#length| 3) 12)) (not (= (select |#valid| 0) 0)) (not (= (select .cse0 1) 0)) (not (= (select |#valid| 1) 1)) (let ((.cse1 (* 3 (* main_~n~0 main_~n~0))) (.cse2 (* main_~n~0 3))) (and (<= main_~n~0 (+ main_~a~0 1)) (= (+ .cse1 7 (* main_~n~0 9)) (+ main_~z~0 main_~y~0)) (= (+ .cse1 (* main_~n~0 main_~n~0 main_~n~0) .cse2 1) (+ main_~y~0 main_~x~0)) (<= 0 main_~a~0) (= (+ .cse1 .cse2 1) main_~y~0) (<= main_~a~0 10))) (not (= |#NULL.base| 0)) (not (= (select |#valid| 2) 1)) (<= |#StackHeapBarrier| 0) (not (= 13 (select |#length| 2))))) [2023-04-02 22:37:57,893 INFO L895 garLoopResultBuilder]: At program point L33-3(lines 33 46) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1)) (.cse2 (* 3 (* main_~n~0 main_~n~0))) (.cse3 (* main_~n~0 3)) (.cse1 (<= 0 main_~a~0))) (or (not (= (select .cse0 0) 48)) (not (= |#NULL.offset| 0)) (not (= 2 (select |#length| 1))) (not (= (select |#valid| 3) 1)) (not (= (select |#length| 3) 12)) (not (= (select |#valid| 0) 0)) (not (= (select .cse0 1) 0)) (not (= (select |#valid| 1) 1)) (and (= (+ (* main_~x~0 18) (* main_~y~0 12) 6) (+ (* main_~z~0 2) (* main_~z~0 main_~y~0))) (= (+ (* main_~n~0 6) 6) main_~z~0) .cse1 (= (+ .cse2 .cse3 1) main_~y~0) (<= main_~a~0 0) (= (* main_~z~0 main_~x~0) (+ (* main_~x~0 12) (* (* main_~a~0 main_~x~0) 6)))) (not (= |#NULL.base| 0)) (not (= (select |#valid| 2) 1)) (<= |#StackHeapBarrier| 0) (let ((.cse4 (div main_~z~0 6)) (.cse5 (* main_~n~0 main_~n~0 main_~n~0))) (and (= (+ .cse2 7 (* main_~n~0 9)) (+ main_~z~0 main_~y~0)) (<= .cse4 (+ main_~a~0 2)) (= (+ .cse2 .cse5 .cse3 1) (+ main_~y~0 main_~x~0)) (< (+ main_~a~0 1) .cse4) .cse1 (= .cse5 main_~x~0) (<= main_~a~0 10))) (not (= 13 (select |#length| 2))))) [2023-04-02 22:37:57,893 INFO L899 garLoopResultBuilder]: For program point mainEXIT(lines 22 56) no Hoare annotation was computed. [2023-04-02 22:37:57,893 INFO L895 garLoopResultBuilder]: At program point L52(line 52) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (or (not (= (select .cse0 0) 48)) (and (= (+ (* main_~x~0 18) (* main_~y~0 12) 6) (+ (* main_~z~0 2) (* main_~z~0 main_~y~0))) (= (+ (* main_~n~0 6) 6) main_~z~0) (<= 0 main_~a~0) (= (+ (* 3 (* main_~n~0 main_~n~0)) (* main_~n~0 3) 1) main_~y~0) (<= main_~a~0 10)) (not (= |#NULL.offset| 0)) (not (= 2 (select |#length| 1))) (not (= (select |#valid| 3) 1)) (not (= (select |#length| 3) 12)) (not (= (select |#valid| 0) 0)) (not (= (select .cse0 1) 0)) (not (= (select |#valid| 1) 1)) (not (= |#NULL.base| 0)) (not (= (select |#valid| 2) 1)) (<= |#StackHeapBarrier| 0) (not (= 13 (select |#length| 2))))) [2023-04-02 22:37:57,894 INFO L895 garLoopResultBuilder]: At program point L50(line 50) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (or (not (= (select .cse0 0) 48)) (not (= |#NULL.offset| 0)) (not (= 2 (select |#length| 1))) (not (= (select |#valid| 3) 1)) (not (= (select |#length| 3) 12)) (not (= (select |#valid| 0) 0)) (not (= (select .cse0 1) 0)) (not (= (select |#valid| 1) 1)) (not (= |#NULL.base| 0)) (not (= (select |#valid| 2) 1)) (let ((.cse2 (* main_~x~0 18)) (.cse1 (* main_~z~0 main_~y~0))) (and (= (+ (* main_~z~0 main_~z~0) 6 .cse1) (+ .cse2 (* main_~z~0 4) (* main_~y~0 24))) (= (+ .cse2 (* main_~y~0 12) 6) (+ (* main_~z~0 2) .cse1)) (= (+ (* main_~n~0 6) 6) main_~z~0) (<= 0 main_~a~0) (<= main_~a~0 10))) (<= |#StackHeapBarrier| 0) (not (= 13 (select |#length| 2))))) [2023-04-02 22:37:57,894 INFO L895 garLoopResultBuilder]: At program point L48(line 48) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1)) (.cse2 (* 3 (* main_~n~0 main_~n~0))) (.cse3 (* main_~n~0 3)) (.cse1 (<= 0 main_~a~0))) (or (not (= (select .cse0 0) 48)) (not (= |#NULL.offset| 0)) (not (= 2 (select |#length| 1))) (not (= (select |#valid| 3) 1)) (not (= (select |#length| 3) 12)) (not (= (select |#valid| 0) 0)) (not (= (select .cse0 1) 0)) (not (= (select |#valid| 1) 1)) (and (= (+ (* main_~x~0 18) (* main_~y~0 12) 6) (+ (* main_~z~0 2) (* main_~z~0 main_~y~0))) (= (+ (* main_~n~0 6) 6) main_~z~0) .cse1 (= (+ .cse2 .cse3 1) main_~y~0) (<= main_~a~0 0) (= (* main_~z~0 main_~x~0) (+ (* main_~x~0 12) (* (* main_~a~0 main_~x~0) 6)))) (not (= |#NULL.base| 0)) (not (= (select |#valid| 2) 1)) (<= |#StackHeapBarrier| 0) (let ((.cse4 (div main_~z~0 6)) (.cse5 (* main_~n~0 main_~n~0 main_~n~0))) (and (= (+ .cse2 7 (* main_~n~0 9)) (+ main_~z~0 main_~y~0)) (<= .cse4 (+ main_~a~0 2)) (= (+ .cse2 .cse5 .cse3 1) (+ main_~y~0 main_~x~0)) (< (+ main_~a~0 1) .cse4) .cse1 (= .cse5 main_~x~0) (<= main_~a~0 10))) (not (= 13 (select |#length| 2))))) [2023-04-02 22:37:57,894 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 22 56) the Hoare annotation is: true [2023-04-02 22:37:57,894 INFO L899 garLoopResultBuilder]: For program point L38(lines 33 46) no Hoare annotation was computed. [2023-04-02 22:37:57,894 INFO L895 garLoopResultBuilder]: At program point L36(line 36) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (or (not (= (select .cse0 0) 48)) (not (= |#NULL.offset| 0)) (not (= 2 (select |#length| 1))) (not (= (select |#valid| 3) 1)) (let ((.cse1 (* 3 (* main_~n~0 main_~n~0))) (.cse2 (* main_~n~0 main_~n~0 main_~n~0))) (and (<= main_~n~0 (+ main_~a~0 1)) (= (+ .cse1 7 (* main_~n~0 9)) (+ main_~z~0 main_~y~0)) (= (+ .cse1 .cse2 (* main_~n~0 3) 1) (+ main_~y~0 main_~x~0)) (<= 0 main_~a~0) (= .cse2 main_~x~0) (<= main_~a~0 10))) (not (= (select |#length| 3) 12)) (not (= (select |#valid| 0) 0)) (not (= (select .cse0 1) 0)) (not (= (select |#valid| 1) 1)) (not (= |#NULL.base| 0)) (not (= (select |#valid| 2) 1)) (<= |#StackHeapBarrier| 0) (not (= 13 (select |#length| 2))))) [2023-04-02 22:37:57,894 INFO L895 garLoopResultBuilder]: At program point L34(line 34) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (or (not (= (select .cse0 0) 48)) (not (= |#NULL.offset| 0)) (not (= 2 (select |#length| 1))) (not (= (select |#valid| 3) 1)) (not (= (select |#length| 3) 12)) (not (= (select |#valid| 0) 0)) (not (= (select .cse0 1) 0)) (not (= (select |#valid| 1) 1)) (let ((.cse1 (* 3 (* main_~n~0 main_~n~0))) (.cse2 (* main_~n~0 3))) (and (<= main_~n~0 (+ main_~a~0 1)) (= (+ .cse1 7 (* main_~n~0 9)) (+ main_~z~0 main_~y~0)) (= (+ .cse1 (* main_~n~0 main_~n~0 main_~n~0) .cse2 1) (+ main_~y~0 main_~x~0)) (<= 0 main_~a~0) (= (+ .cse1 .cse2 1) main_~y~0) (<= main_~a~0 10))) (not (= |#NULL.base| 0)) (not (= (select |#valid| 2) 1)) (<= |#StackHeapBarrier| 0) (not (= 13 (select |#length| 2))))) [2023-04-02 22:37:57,894 INFO L895 garLoopResultBuilder]: At program point L34-1(line 34) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (or (not (= (select .cse0 0) 48)) (not (= |#NULL.offset| 0)) (not (= 2 (select |#length| 1))) (not (= (select |#valid| 3) 1)) (not (= (select |#length| 3) 12)) (not (= (select |#valid| 0) 0)) (not (= (select .cse0 1) 0)) (not (= (select |#valid| 1) 1)) (let ((.cse1 (* 3 (* main_~n~0 main_~n~0))) (.cse2 (* main_~n~0 3))) (and (<= main_~n~0 (+ main_~a~0 1)) (= (+ .cse1 7 (* main_~n~0 9)) (+ main_~z~0 main_~y~0)) (= (+ .cse1 (* main_~n~0 main_~n~0 main_~n~0) .cse2 1) (+ main_~y~0 main_~x~0)) (<= 0 main_~a~0) (= (+ .cse1 .cse2 1) main_~y~0) (<= main_~a~0 10))) (not (= |#NULL.base| 0)) (not (= (select |#valid| 2) 1)) (<= |#StackHeapBarrier| 0) (not (= 13 (select |#length| 2))))) [2023-04-02 22:37:57,894 INFO L895 garLoopResultBuilder]: At program point L26(line 26) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (or (not (= (select .cse0 0) 48)) (not (= |#NULL.offset| 0)) (not (= 2 (select |#length| 1))) (not (= (select |#valid| 3) 1)) (exists ((|v_main_#t~nondet4_3| Int)) (let ((.cse1 (mod |v_main_#t~nondet4_3| 65536))) (and (< 32767 .cse1) (= (+ 65536 main_~a~0) .cse1)))) (not (= (select |#length| 3) 12)) (not (= (select |#valid| 0) 0)) (not (= (select .cse0 1) 0)) (not (= (select |#valid| 1) 1)) (not (= |#NULL.base| 0)) (exists ((|v_main_#t~nondet4_3| Int)) (let ((.cse2 (mod |v_main_#t~nondet4_3| 65536))) (and (<= .cse2 32767) (= main_~a~0 .cse2)))) (not (= (select |#valid| 2) 1)) (<= |#StackHeapBarrier| 0) (not (= 13 (select |#length| 2))))) [2023-04-02 22:37:57,895 INFO L899 garLoopResultBuilder]: For program point L26-1(line 26) no Hoare annotation was computed. [2023-04-02 22:37:57,895 INFO L899 garLoopResultBuilder]: For program point L53(line 53) no Hoare annotation was computed. [2023-04-02 22:37:57,895 INFO L895 garLoopResultBuilder]: At program point L51(line 51) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (or (not (= (select .cse0 0) 48)) (and (= (+ (* main_~x~0 18) (* main_~y~0 12) 6) (+ (* main_~z~0 2) (* main_~z~0 main_~y~0))) (= (+ (* main_~n~0 6) 6) main_~z~0) (<= 0 main_~a~0) (= (+ (* 3 (* main_~n~0 main_~n~0)) (* main_~n~0 3) 1) main_~y~0) (<= main_~a~0 10)) (not (= |#NULL.offset| 0)) (not (= 2 (select |#length| 1))) (not (= (select |#valid| 3) 1)) (not (= (select |#length| 3) 12)) (not (= (select |#valid| 0) 0)) (not (= (select .cse0 1) 0)) (not (= (select |#valid| 1) 1)) (not (= |#NULL.base| 0)) (not (= (select |#valid| 2) 1)) (<= |#StackHeapBarrier| 0) (not (= 13 (select |#length| 2))))) [2023-04-02 22:37:57,895 INFO L895 garLoopResultBuilder]: At program point L49(line 49) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (or (not (= (select .cse0 0) 48)) (not (= |#NULL.offset| 0)) (let ((.cse1 (* main_~z~0 2))) (and (= (+ (* main_~a~0 6) (* main_~y~0 2) 10) (+ (* main_~a~0 main_~z~0) .cse1)) (= (+ (* main_~x~0 18) (* main_~y~0 12) 6) (+ .cse1 (* main_~z~0 main_~y~0))) (= (+ (* main_~n~0 6) 6) main_~z~0) (<= 0 main_~a~0) (= (+ (* 3 (* main_~n~0 main_~n~0)) (* main_~n~0 3) 1) main_~y~0) (<= main_~a~0 10))) (not (= 2 (select |#length| 1))) (not (= (select |#valid| 3) 1)) (not (= (select |#length| 3) 12)) (not (= (select |#valid| 0) 0)) (not (= (select .cse0 1) 0)) (not (= (select |#valid| 1) 1)) (not (= |#NULL.base| 0)) (not (= (select |#valid| 2) 1)) (<= |#StackHeapBarrier| 0) (not (= 13 (select |#length| 2))))) [2023-04-02 22:37:57,895 INFO L895 garLoopResultBuilder]: At program point L37(line 37) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (or (not (= (select .cse0 0) 48)) (not (= |#NULL.offset| 0)) (not (= 2 (select |#length| 1))) (not (= (select |#valid| 3) 1)) (let ((.cse1 (* 3 (* main_~n~0 main_~n~0))) (.cse2 (* main_~n~0 main_~n~0 main_~n~0))) (and (<= main_~n~0 (+ main_~a~0 1)) (= (+ .cse1 7 (* main_~n~0 9)) (+ main_~z~0 main_~y~0)) (= (+ .cse1 .cse2 (* main_~n~0 3) 1) (+ main_~y~0 main_~x~0)) (<= 0 main_~a~0) (= .cse2 main_~x~0) (<= main_~a~0 10))) (not (= (select |#length| 3) 12)) (not (= (select |#valid| 0) 0)) (not (= (select .cse0 1) 0)) (not (= (select |#valid| 1) 1)) (not (= |#NULL.base| 0)) (not (= (select |#valid| 2) 1)) (<= |#StackHeapBarrier| 0) (not (= 13 (select |#length| 2))))) [2023-04-02 22:37:57,895 INFO L895 garLoopResultBuilder]: At program point L35(line 35) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (or (not (= (select .cse0 0) 48)) (not (= |#NULL.offset| 0)) (not (= 2 (select |#length| 1))) (not (= (select |#valid| 3) 1)) (let ((.cse1 (* 3 (* main_~n~0 main_~n~0))) (.cse2 (* main_~n~0 main_~n~0 main_~n~0))) (and (<= main_~n~0 (+ main_~a~0 1)) (= (+ .cse1 7 (* main_~n~0 9)) (+ main_~z~0 main_~y~0)) (= (+ .cse1 .cse2 (* main_~n~0 3) 1) (+ main_~y~0 main_~x~0)) (<= 0 main_~a~0) (= .cse2 main_~x~0) (<= main_~a~0 10))) (not (= (select |#length| 3) 12)) (not (= (select |#valid| 0) 0)) (not (= (select .cse0 1) 0)) (not (= (select |#valid| 1) 1)) (not (= |#NULL.base| 0)) (not (= (select |#valid| 2) 1)) (<= |#StackHeapBarrier| 0) (not (= 13 (select |#length| 2))))) [2023-04-02 22:37:57,895 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(line -1) the Hoare annotation is: (and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|)) [2023-04-02 22:37:57,895 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2023-04-02 22:37:57,895 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-04-02 22:37:57,895 INFO L895 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (and (= (select |#length| 3) 12) (= 13 (select |#length| 2)) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (= (select |#valid| 1) 1) (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= (select .cse0 0) 48) (= (select .cse0 1) 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) [2023-04-02 22:37:57,895 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2023-04-02 22:37:57,895 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(line -1) the Hoare annotation is: true [2023-04-02 22:37:57,896 INFO L899 garLoopResultBuilder]: For program point L16(lines 16 17) no Hoare annotation was computed. [2023-04-02 22:37:57,896 INFO L899 garLoopResultBuilder]: For program point L15(lines 15 18) no Hoare annotation was computed. [2023-04-02 22:37:57,896 INFO L899 garLoopResultBuilder]: For program point L15-2(lines 14 20) no Hoare annotation was computed. [2023-04-02 22:37:57,896 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 14 20) no Hoare annotation was computed. [2023-04-02 22:37:57,896 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 14 20) the Hoare annotation is: true [2023-04-02 22:37:57,896 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2023-04-02 22:37:57,899 INFO L445 BasicCegarLoop]: Path program histogram: [5, 4, 2, 1, 1] [2023-04-02 22:37:57,900 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-04-02 22:37:57,916 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.04 10:37:57 BoogieIcfgContainer [2023-04-02 22:37:57,916 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-04-02 22:37:57,916 INFO L158 Benchmark]: Toolchain (without parser) took 61029.69ms. Allocated memory was 264.2MB in the beginning and 458.2MB in the end (delta: 194.0MB). Free memory was 214.1MB in the beginning and 322.6MB in the end (delta: -108.5MB). Peak memory consumption was 265.4MB. Max. memory is 8.0GB. [2023-04-02 22:37:57,917 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 180.4MB. Free memory is still 127.2MB. There was no memory consumed. Max. memory is 8.0GB. [2023-04-02 22:37:57,917 INFO L158 Benchmark]: CACSL2BoogieTranslator took 237.03ms. Allocated memory is still 264.2MB. Free memory was 213.6MB in the beginning and 203.1MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-04-02 22:37:57,917 INFO L158 Benchmark]: Boogie Preprocessor took 25.57ms. Allocated memory is still 264.2MB. Free memory was 203.1MB in the beginning and 201.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-04-02 22:37:57,917 INFO L158 Benchmark]: RCFGBuilder took 253.70ms. Allocated memory is still 264.2MB. Free memory was 201.5MB in the beginning and 187.9MB in the end (delta: 13.7MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2023-04-02 22:37:57,918 INFO L158 Benchmark]: TraceAbstraction took 60509.27ms. Allocated memory was 264.2MB in the beginning and 458.2MB in the end (delta: 194.0MB). Free memory was 187.4MB in the beginning and 322.6MB in the end (delta: -135.2MB). Peak memory consumption was 239.1MB. Max. memory is 8.0GB. [2023-04-02 22:37:57,919 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 180.4MB. Free memory is still 127.2MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 237.03ms. Allocated memory is still 264.2MB. Free memory was 213.6MB in the beginning and 203.1MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 25.57ms. Allocated memory is still 264.2MB. Free memory was 203.1MB in the beginning and 201.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 253.70ms. Allocated memory is still 264.2MB. Free memory was 201.5MB in the beginning and 187.9MB in the end (delta: 13.7MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * TraceAbstraction took 60509.27ms. Allocated memory was 264.2MB in the beginning and 458.2MB in the end (delta: 194.0MB). Free memory was 187.4MB in the beginning and 322.6MB in the end (delta: -135.2MB). Peak memory consumption was 239.1MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 34 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 60.4s, OverallIterations: 13, TraceHistogramMax: 48, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 17.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 7.9s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1 mSolverCounterUnknown, 281 SdHoareTripleChecker+Valid, 6.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 233 mSDsluCounter, 1452 SdHoareTripleChecker+Invalid, 6.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1056 mSDsCounter, 503 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4756 IncrementalHoareTripleChecker+Invalid, 5260 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 503 mSolverCounterUnsat, 396 mSDtfsCounter, 4756 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3648 GetRequests, 3266 SyntacticMatches, 19 SemanticMatches, 363 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2549 ImplicationChecksByTransitivity, 20.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=167occurred in iteration=12, InterpolantAutomatonStates: 149, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 13 MinimizatonAttempts, 33 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 19 LocationsWithAnnotation, 104 PreInvPairs, 182 NumberOfFragments, 1743 HoareAnnotationTreeSize, 104 FomulaSimplifications, 41305 FormulaSimplificationTreeSizeReduction, 2.2s HoareSimplificationTime, 19 FomulaSimplificationsInter, 15377 FormulaSimplificationTreeSizeReductionInter, 5.7s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 10.3s InterpolantComputationTime, 1387 NumberOfCodeBlocks, 995 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 2085 ConstructedInterpolants, 0 QuantifiedInterpolants, 9854 SizeOfPredicates, 45 NumberOfNonLiveVariables, 2369 ConjunctsInSsa, 399 ConjunctsInUnsatCore, 21 InterpolantComputations, 1 PerfectInterpolantSequences, 19699/20710 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: OVERALL_TIME: 0.4s, ICFG_INTERPRETER_ENTERED_PROCEDURES: 5, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 17, DAG_INTERPRETER_EARLY_EXITS: 1, TOOLS_POST_APPLICATIONS: 14, TOOLS_POST_TIME: 0.1s, TOOLS_POST_CALL_APPLICATIONS: 11, TOOLS_POST_CALL_TIME: 0.1s, TOOLS_POST_RETURN_APPLICATIONS: 6, TOOLS_POST_RETURN_TIME: 0.1s, TOOLS_QUANTIFIERELIM_APPLICATIONS: 31, TOOLS_QUANTIFIERELIM_TIME: 0.2s, TOOLS_QUANTIFIERELIM_MAX_TIME: 0.0s, FLUID_QUERY_TIME: 0.0s, FLUID_QUERIES: 52, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 7, DOMAIN_JOIN_TIME: 0.0s, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME: 0.0s, DOMAIN_WIDEN_APPLICATIONS: 0, DOMAIN_WIDEN_TIME: 0.0s, DOMAIN_ISSUBSETEQ_APPLICATIONS: 0, DOMAIN_ISSUBSETEQ_TIME: 0.0s, DOMAIN_ISBOTTOM_APPLICATIONS: 17, DOMAIN_ISBOTTOM_TIME: 0.0s, LOOP_SUMMARIZER_APPLICATIONS: 0, LOOP_SUMMARIZER_CACHE_MISSES: 0, LOOP_SUMMARIZER_OVERALL_TIME: 0.0s, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME: 0.0s, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 0, CALL_SUMMARIZER_APPLICATIONS: 6, CALL_SUMMARIZER_CACHE_MISSES: 3, CALL_SUMMARIZER_OVERALL_TIME: 0.0s, CALL_SUMMARIZER_NEW_COMPUTATION_TIME: 0.0s, PROCEDURE_GRAPH_BUILDER_TIME: 0.0s, PATH_EXPR_TIME: 0.0s, REGEX_TO_DAG_TIME: 0.0s, DAG_COMPRESSION_TIME: 0.0s, DAG_COMPRESSION_PROCESSED_NODES: 110, DAG_COMPRESSION_RETAINED_NODES: 60, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 33]: Loop Invariant Derived loop invariant: (((((((((((!(unknown-#memory_int-unknown[1][0] == 48) || !(#NULL == 0)) || !(2 == unknown-#length-unknown[1])) || !(\valid[3] == 1)) || !(unknown-#length-unknown[3] == 12)) || !(\valid[0] == 0)) || !(unknown-#memory_int-unknown[1][1] == 0)) || !(\valid[1] == 1)) || (((((n <= a + 1 && 3 * (n * n) + 7 + n * 9 == z + y) && 3 * (n * n) + n * n * n + n * 3 + 1 == y + x) && 0 <= a) && 3 * (n * n) + n * 3 + 1 == y) && a <= 10)) || !(#NULL == 0)) || !(\valid[2] == 1)) || unknown-#StackHeapBarrier-unknown <= 0) || !(13 == unknown-#length-unknown[2]) RESULT: Ultimate proved your program to be correct! [2023-04-02 22:37:57,966 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...