/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-lit/jm2006_variant.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-c225d54 [2021-05-02 12:34:48,243 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-02 12:34:48,245 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-02 12:34:48,262 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-05-02 12:34:48,268 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-02 12:34:48,269 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-02 12:34:48,270 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-02 12:34:48,270 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-02 12:34:48,271 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-02 12:34:48,271 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-02 12:34:48,272 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-02 12:34:48,274 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-02 12:34:48,274 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-02 12:34:48,277 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-02 12:34:48,278 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-02 12:34:48,279 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-02 12:34:48,280 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-02 12:34:48,285 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-02 12:34:48,285 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-02 12:34:48,286 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-02 12:34:48,286 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2021-05-02 12:34:48,300 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-02 12:34:48,300 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-02 12:34:48,301 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-05-02 12:34:48,301 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-05-02 12:34:48,301 INFO L138 SettingsManager]: * Use SBE=true [2021-05-02 12:34:48,302 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-02 12:34:48,302 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-02 12:34:48,302 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-02 12:34:48,302 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-02 12:34:48,302 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-02 12:34:48,302 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-02 12:34:48,302 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-02 12:34:48,302 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-02 12:34:48,302 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-02 12:34:48,302 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-02 12:34:48,302 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-02 12:34:48,303 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-02 12:34:48,303 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-02 12:34:48,303 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-02 12:34:48,303 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-02 12:34:48,303 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-02 12:34:48,303 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-02 12:34:48,303 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-05-02 12:34:48,303 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-05-02 12:34:48,303 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-02 12:34:48,303 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-05-02 12:34:48,303 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-02 12:34:48,304 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-05-02 12:34:48,304 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-02 12:34:48,517 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-02 12:34:48,537 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-02 12:34:48,538 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-02 12:34:48,539 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-02 12:34:48,539 INFO L275 PluginConnector]: CDTParser initialized [2021-05-02 12:34:48,540 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/jm2006_variant.i [2021-05-02 12:34:48,581 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/07bfb9cbf/67b35ddc6dc94374b635a440dcb2f663/FLAGaeb89875e [2021-05-02 12:34:48,895 INFO L306 CDTParser]: Found 1 translation units. [2021-05-02 12:34:48,896 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/jm2006_variant.i [2021-05-02 12:34:48,900 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/07bfb9cbf/67b35ddc6dc94374b635a440dcb2f663/FLAGaeb89875e [2021-05-02 12:34:49,313 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/07bfb9cbf/67b35ddc6dc94374b635a440dcb2f663 [2021-05-02 12:34:49,315 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-02 12:34:49,316 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-05-02 12:34:49,317 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-02 12:34:49,317 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-02 12:34:49,335 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-02 12:34:49,335 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 12:34:49" (1/1) ... [2021-05-02 12:34:49,336 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53743c66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 12:34:49, skipping insertion in model container [2021-05-02 12:34:49,336 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 12:34:49" (1/1) ... [2021-05-02 12:34:49,341 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-02 12:34:49,350 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-02 12:34:49,451 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/jm2006_variant.i[895,908] [2021-05-02 12:34:49,458 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 12:34:49,464 INFO L203 MainTranslator]: Completed pre-run [2021-05-02 12:34:49,491 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/jm2006_variant.i[895,908] [2021-05-02 12:34:49,496 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 12:34:49,518 INFO L208 MainTranslator]: Completed translation [2021-05-02 12:34:49,519 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 12:34:49 WrapperNode [2021-05-02 12:34:49,519 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-02 12:34:49,519 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-02 12:34:49,520 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-02 12:34:49,521 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-02 12:34:49,527 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 12:34:49" (1/1) ... [2021-05-02 12:34:49,527 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 12:34:49" (1/1) ... [2021-05-02 12:34:49,534 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 12:34:49" (1/1) ... [2021-05-02 12:34:49,534 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 12:34:49" (1/1) ... [2021-05-02 12:34:49,544 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 12:34:49" (1/1) ... [2021-05-02 12:34:49,546 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 12:34:49" (1/1) ... [2021-05-02 12:34:49,549 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 12:34:49" (1/1) ... [2021-05-02 12:34:49,551 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-02 12:34:49,552 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-02 12:34:49,552 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-02 12:34:49,553 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-02 12:34:49,553 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 12:34:49" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-02 12:34:49,716 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-02 12:34:49,716 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-02 12:34:49,716 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-02 12:34:49,716 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-05-02 12:34:49,717 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-02 12:34:49,717 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-02 12:34:49,717 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-02 12:34:49,717 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-02 12:34:49,717 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-05-02 12:34:49,717 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-05-02 12:34:49,717 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-02 12:34:49,717 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-02 12:34:49,718 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-05-02 12:34:49,718 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-02 12:34:49,718 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-05-02 12:34:49,719 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-02 12:34:49,719 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-02 12:34:49,719 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-02 12:34:49,719 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-02 12:34:49,719 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-02 12:34:49,719 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-02 12:34:49,719 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-02 12:34:49,929 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-02 12:34:49,930 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-05-02 12:34:49,930 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 12:34:49 BoogieIcfgContainer [2021-05-02 12:34:49,931 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-02 12:34:49,931 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-02 12:34:49,932 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-02 12:34:49,949 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-02 12:34:49,950 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.05 12:34:49" (1/3) ... [2021-05-02 12:34:49,950 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35baeb1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 12:34:49, skipping insertion in model container [2021-05-02 12:34:49,950 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 12:34:49" (2/3) ... [2021-05-02 12:34:49,950 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35baeb1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 12:34:49, skipping insertion in model container [2021-05-02 12:34:49,950 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 12:34:49" (3/3) ... [2021-05-02 12:34:49,951 INFO L111 eAbstractionObserver]: Analyzing ICFG jm2006_variant.i [2021-05-02 12:34:49,955 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-05-02 12:34:49,957 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-02 12:34:49,979 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-02 12:34:50,001 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-02 12:34:50,001 INFO L377 AbstractCegarLoop]: Hoare is true [2021-05-02 12:34:50,001 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-05-02 12:34:50,001 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-02 12:34:50,001 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-02 12:34:50,001 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-02 12:34:50,001 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-02 12:34:50,002 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-02 12:34:50,014 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 14 states have (on average 1.5) internal successors, (21), 16 states have internal predecessors, (21), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-02 12:34:50,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-05-02 12:34:50,018 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:34:50,018 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:34:50,019 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:34:50,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:34:50,022 INFO L82 PathProgramCache]: Analyzing trace with hash -522767122, now seen corresponding path program 1 times [2021-05-02 12:34:50,028 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:34:50,028 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99408540] [2021-05-02 12:34:50,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:34:50,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:34:50,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:34:50,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:34:50,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:34:50,163 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:34:50,163 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99408540] [2021-05-02 12:34:50,164 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99408540] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 12:34:50,164 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 12:34:50,164 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-02 12:34:50,164 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106038616] [2021-05-02 12:34:50,167 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-02 12:34:50,167 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:34:50,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-02 12:34:50,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 12:34:50,176 INFO L87 Difference]: Start difference. First operand has 22 states, 14 states have (on average 1.5) internal successors, (21), 16 states have internal predecessors, (21), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:34:50,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:34:50,206 INFO L93 Difference]: Finished difference Result 35 states and 42 transitions. [2021-05-02 12:34:50,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-02 12:34:50,208 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2021-05-02 12:34:50,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:34:50,213 INFO L225 Difference]: With dead ends: 35 [2021-05-02 12:34:50,214 INFO L226 Difference]: Without dead ends: 15 [2021-05-02 12:34:50,216 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 32.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 12:34:50,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-05-02 12:34:50,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-05-02 12:34:50,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:34:50,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2021-05-02 12:34:50,240 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 14 [2021-05-02 12:34:50,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:34:50,240 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2021-05-02 12:34:50,241 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:34:50,241 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2021-05-02 12:34:50,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-05-02 12:34:50,242 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:34:50,242 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:34:50,242 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-02 12:34:50,243 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:34:50,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:34:50,244 INFO L82 PathProgramCache]: Analyzing trace with hash -637283726, now seen corresponding path program 1 times [2021-05-02 12:34:50,244 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:34:50,244 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189313267] [2021-05-02 12:34:50,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:34:50,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:34:50,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:34:50,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:34:50,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:34:50,470 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:34:50,470 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189313267] [2021-05-02 12:34:50,470 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189313267] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 12:34:50,470 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 12:34:50,470 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-02 12:34:50,470 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031367169] [2021-05-02 12:34:50,471 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-02 12:34:50,471 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:34:50,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-02 12:34:50,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-05-02 12:34:50,472 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:34:50,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:34:50,702 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2021-05-02 12:34:50,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-02 12:34:50,703 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2021-05-02 12:34:50,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:34:50,704 INFO L225 Difference]: With dead ends: 22 [2021-05-02 12:34:50,704 INFO L226 Difference]: Without dead ends: 16 [2021-05-02 12:34:50,705 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 309.1ms TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-05-02 12:34:50,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-05-02 12:34:50,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-05-02 12:34:50,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:34:50,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2021-05-02 12:34:50,709 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 14 [2021-05-02 12:34:50,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:34:50,709 INFO L480 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2021-05-02 12:34:50,709 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:34:50,709 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2021-05-02 12:34:50,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-05-02 12:34:50,709 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:34:50,709 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:34:50,710 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-02 12:34:50,710 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:34:50,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:34:50,710 INFO L82 PathProgramCache]: Analyzing trace with hash -1050868340, now seen corresponding path program 1 times [2021-05-02 12:34:50,710 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:34:50,710 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303963659] [2021-05-02 12:34:50,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:34:50,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:34:50,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:34:50,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:34:50,865 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:34:50,865 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:34:50,866 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303963659] [2021-05-02 12:34:50,866 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303963659] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:34:50,866 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1800479895] [2021-05-02 12:34:50,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:34:50,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:34:50,918 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 23 conjunts are in the unsatisfiable core [2021-05-02 12:34:50,921 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:34:51,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:51,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:51,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:51,092 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:34:51,092 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1800479895] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:34:51,092 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:34:51,092 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 14 [2021-05-02 12:34:51,092 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074874026] [2021-05-02 12:34:51,093 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-05-02 12:34:51,093 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:34:51,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-05-02 12:34:51,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2021-05-02 12:34:51,094 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand has 14 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 11 states have internal predecessors, (17), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:34:51,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:34:51,345 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2021-05-02 12:34:51,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-02 12:34:51,345 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 11 states have internal predecessors, (17), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2021-05-02 12:34:51,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:34:51,346 INFO L225 Difference]: With dead ends: 23 [2021-05-02 12:34:51,346 INFO L226 Difference]: Without dead ends: 17 [2021-05-02 12:34:51,346 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 370.5ms TimeCoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2021-05-02 12:34:51,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-05-02 12:34:51,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-05-02 12:34:51,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 12 states have internal predecessors, (13), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:34:51,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2021-05-02 12:34:51,349 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 15 [2021-05-02 12:34:51,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:34:51,349 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2021-05-02 12:34:51,350 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 11 states have internal predecessors, (17), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:34:51,350 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2021-05-02 12:34:51,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-05-02 12:34:51,350 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:34:51,350 INFO L523 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:34:51,565 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-05-02 12:34:51,566 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:34:51,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:34:51,566 INFO L82 PathProgramCache]: Analyzing trace with hash -987089486, now seen corresponding path program 2 times [2021-05-02 12:34:51,566 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:34:51,566 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625130364] [2021-05-02 12:34:51,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:34:51,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:34:51,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:34:51,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:34:51,688 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:34:51,689 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:34:51,689 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625130364] [2021-05-02 12:34:51,689 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625130364] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:34:51,689 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2030703279] [2021-05-02 12:34:51,689 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:34:51,741 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 12:34:51,741 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:34:51,742 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 29 conjunts are in the unsatisfiable core [2021-05-02 12:34:51,743 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:34:51,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:51,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:51,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:51,862 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:34:51,862 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2030703279] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:34:51,862 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:34:51,862 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 16 [2021-05-02 12:34:51,863 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92441531] [2021-05-02 12:34:51,863 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-02 12:34:51,863 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:34:51,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-02 12:34:51,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2021-05-02 12:34:51,864 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand has 16 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 13 states have internal predecessors, (19), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:34:52,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:34:52,211 INFO L93 Difference]: Finished difference Result 27 states and 28 transitions. [2021-05-02 12:34:52,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-05-02 12:34:52,212 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 13 states have internal predecessors, (19), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2021-05-02 12:34:52,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:34:52,212 INFO L225 Difference]: With dead ends: 27 [2021-05-02 12:34:52,212 INFO L226 Difference]: Without dead ends: 19 [2021-05-02 12:34:52,213 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 423.7ms TimeCoverageRelationStatistics Valid=116, Invalid=534, Unknown=0, NotChecked=0, Total=650 [2021-05-02 12:34:52,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-05-02 12:34:52,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-05-02 12:34:52,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 14 states have internal predecessors, (15), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:34:52,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2021-05-02 12:34:52,216 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 16 [2021-05-02 12:34:52,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:34:52,216 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2021-05-02 12:34:52,216 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 13 states have internal predecessors, (19), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:34:52,216 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2021-05-02 12:34:52,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-05-02 12:34:52,217 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:34:52,217 INFO L523 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:34:52,434 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:34:52,435 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:34:52,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:34:52,435 INFO L82 PathProgramCache]: Analyzing trace with hash -2142975758, now seen corresponding path program 3 times [2021-05-02 12:34:52,435 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:34:52,435 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718612354] [2021-05-02 12:34:52,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:34:52,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:34:52,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:34:52,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:34:52,570 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-05-02 12:34:52,570 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:34:52,570 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718612354] [2021-05-02 12:34:52,570 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718612354] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:34:52,570 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1666142949] [2021-05-02 12:34:52,571 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:34:52,678 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-05-02 12:34:52,678 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:34:52,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 43 conjunts are in the unsatisfiable core [2021-05-02 12:34:52,681 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:34:52,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:52,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:52,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:52,831 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:34:52,831 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1666142949] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:34:52,831 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:34:52,831 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-05-02 12:34:52,831 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149800744] [2021-05-02 12:34:52,831 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-05-02 12:34:52,831 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:34:52,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-05-02 12:34:52,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2021-05-02 12:34:52,832 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand has 19 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 16 states have internal predecessors, (23), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:34:53,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:34:53,226 INFO L93 Difference]: Finished difference Result 22 states and 23 transitions. [2021-05-02 12:34:53,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-05-02 12:34:53,226 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 16 states have internal predecessors, (23), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2021-05-02 12:34:53,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:34:53,227 INFO L225 Difference]: With dead ends: 22 [2021-05-02 12:34:53,227 INFO L226 Difference]: Without dead ends: 0 [2021-05-02 12:34:53,227 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 499.4ms TimeCoverageRelationStatistics Valid=153, Invalid=777, Unknown=0, NotChecked=0, Total=930 [2021-05-02 12:34:53,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-05-02 12:34:53,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-05-02 12:34:53,228 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) [2021-05-02 12:34:53,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-05-02 12:34:53,228 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2021-05-02 12:34:53,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:34:53,228 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-05-02 12:34:53,228 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 16 states have internal predecessors, (23), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:34:53,228 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-05-02 12:34:53,228 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-02 12:34:53,451 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:34:53,453 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-05-02 12:34:53,617 INFO L198 CegarLoopUtils]: For program point reach_errorEXIT(line 12) no Hoare annotation was computed. [2021-05-02 12:34:53,617 INFO L198 CegarLoopUtils]: For program point reach_errorENTRY(line 12) no Hoare annotation was computed. [2021-05-02 12:34:53,617 INFO L198 CegarLoopUtils]: For program point L12-1(line 12) no Hoare annotation was computed. [2021-05-02 12:34:53,617 INFO L198 CegarLoopUtils]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2021-05-02 12:34:53,617 INFO L194 CegarLoopUtils]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string0.offset| |old(#t~string0.offset)|) (= |old(#length)| |#length|) (= |#t~string1.base| |old(#t~string1.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string0.base| |old(#t~string0.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|) (= |#t~string1.offset| |old(#t~string1.offset)|)) [2021-05-02 12:34:53,617 INFO L198 CegarLoopUtils]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2021-05-02 12:34:53,617 INFO L198 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-05-02 12:34:53,617 INFO L201 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-05-02 12:34:53,617 INFO L201 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-05-02 12:34:53,618 INFO L198 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-05-02 12:34:53,618 INFO L198 CegarLoopUtils]: For program point L15(line 15) no Hoare annotation was computed. [2021-05-02 12:34:53,618 INFO L198 CegarLoopUtils]: For program point assume_abort_if_notENTRY(lines 14 16) no Hoare annotation was computed. [2021-05-02 12:34:53,618 INFO L198 CegarLoopUtils]: For program point L15-2(lines 14 16) no Hoare annotation was computed. [2021-05-02 12:34:53,618 INFO L198 CegarLoopUtils]: For program point assume_abort_if_notEXIT(lines 14 16) no Hoare annotation was computed. [2021-05-02 12:34:53,618 INFO L194 CegarLoopUtils]: At program point L33-2(lines 33 37) the Hoare annotation is: (let ((.cse1 (+ main_~x~0 main_~j~0)) (.cse0 (+ main_~i~0 main_~y~0 main_~z~0))) (and (<= .cse0 .cse1) (<= .cse1 .cse0))) [2021-05-02 12:34:53,618 INFO L198 CegarLoopUtils]: For program point L33-3(lines 24 42) no Hoare annotation was computed. [2021-05-02 12:34:53,618 INFO L198 CegarLoopUtils]: For program point L29(line 29) no Hoare annotation was computed. [2021-05-02 12:34:53,618 INFO L198 CegarLoopUtils]: For program point mainEXIT(lines 24 42) no Hoare annotation was computed. [2021-05-02 12:34:53,618 INFO L198 CegarLoopUtils]: For program point mainFINAL(lines 24 42) no Hoare annotation was computed. [2021-05-02 12:34:53,618 INFO L198 CegarLoopUtils]: For program point L38(lines 38 40) no Hoare annotation was computed. [2021-05-02 12:34:53,618 INFO L201 CegarLoopUtils]: At program point mainENTRY(lines 24 42) the Hoare annotation is: true [2021-05-02 12:34:53,618 INFO L198 CegarLoopUtils]: For program point L28(line 28) no Hoare annotation was computed. [2021-05-02 12:34:53,618 INFO L194 CegarLoopUtils]: At program point L39(line 39) the Hoare annotation is: (and (<= (+ main_~y~0 main_~z~0) 0) (< 0 (+ main_~y~0 main_~z~0 1))) [2021-05-02 12:34:53,618 INFO L198 CegarLoopUtils]: For program point L18-2(lines 17 22) no Hoare annotation was computed. [2021-05-02 12:34:53,618 INFO L201 CegarLoopUtils]: At program point __VERIFIER_assertENTRY(lines 17 22) the Hoare annotation is: true [2021-05-02 12:34:53,618 INFO L198 CegarLoopUtils]: For program point __VERIFIER_assertEXIT(lines 17 22) no Hoare annotation was computed. [2021-05-02 12:34:53,619 INFO L198 CegarLoopUtils]: For program point L19(line 19) no Hoare annotation was computed. [2021-05-02 12:34:53,619 INFO L198 CegarLoopUtils]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-05-02 12:34:53,619 INFO L198 CegarLoopUtils]: For program point L18(lines 18 20) no Hoare annotation was computed. [2021-05-02 12:34:53,637 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.05 12:34:53 BoogieIcfgContainer [2021-05-02 12:34:53,637 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-02 12:34:53,637 INFO L168 Benchmark]: Toolchain (without parser) took 4321.65 ms. Allocated memory was 197.1 MB in the beginning and 260.0 MB in the end (delta: 62.9 MB). Free memory was 160.8 MB in the beginning and 175.0 MB in the end (delta: -14.1 MB). Peak memory consumption was 48.9 MB. Max. memory is 8.0 GB. [2021-05-02 12:34:53,637 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 197.1 MB. Free memory is still 177.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-02 12:34:53,638 INFO L168 Benchmark]: CACSL2BoogieTranslator took 202.17 ms. Allocated memory is still 197.1 MB. Free memory was 160.6 MB in the beginning and 179.6 MB in the end (delta: -19.0 MB). Peak memory consumption was 11.7 MB. Max. memory is 8.0 GB. [2021-05-02 12:34:53,638 INFO L168 Benchmark]: Boogie Preprocessor took 32.07 ms. Allocated memory is still 197.1 MB. Free memory was 179.6 MB in the beginning and 178.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-05-02 12:34:53,638 INFO L168 Benchmark]: RCFGBuilder took 378.21 ms. Allocated memory is still 197.1 MB. Free memory was 178.1 MB in the beginning and 162.3 MB in the end (delta: 15.7 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. [2021-05-02 12:34:53,638 INFO L168 Benchmark]: TraceAbstraction took 3705.32 ms. Allocated memory was 197.1 MB in the beginning and 260.0 MB in the end (delta: 62.9 MB). Free memory was 161.8 MB in the beginning and 175.0 MB in the end (delta: -13.2 MB). Peak memory consumption was 50.8 MB. Max. memory is 8.0 GB. [2021-05-02 12:34:53,638 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10 ms. Allocated memory is still 197.1 MB. Free memory is still 177.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 202.17 ms. Allocated memory is still 197.1 MB. Free memory was 160.6 MB in the beginning and 179.6 MB in the end (delta: -19.0 MB). Peak memory consumption was 11.7 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 32.07 ms. Allocated memory is still 197.1 MB. Free memory was 179.6 MB in the beginning and 178.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 378.21 ms. Allocated memory is still 197.1 MB. Free memory was 178.1 MB in the beginning and 162.3 MB in the end (delta: 15.7 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 3705.32 ms. Allocated memory was 197.1 MB in the beginning and 260.0 MB in the end (delta: 62.9 MB). Free memory was 161.8 MB in the beginning and 175.0 MB in the end (delta: -13.2 MB). Peak memory consumption was 50.8 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 19]: 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, 29 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3452.3ms, OverallIterations: 5, TraceHistogramMax: 4, EmptinessCheckTime: 8.4ms, AutomataDifference: 1280.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 164.5ms, InitialAbstractionConstructionTime: 9.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 61 SDtfs, 89 SDslu, 169 SDs, 0 SdLazy, 411 SolverSat, 34 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 202.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 127 GetRequests, 41 SyntacticMatches, 3 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 373 ImplicationChecksByTransitivity, 1635.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred in iteration=0, InterpolantAutomatonStates: 48, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 23.9ms AutomataMinimizationTime, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 7 LocationsWithAnnotation, 13 PreInvPairs, 24 NumberOfFragments, 58 HoareAnnotationTreeSize, 13 FomulaSimplifications, 96 FormulaSimplificationTreeSizeReduction, 92.1ms HoareSimplificationTime, 7 FomulaSimplificationsInter, 605 FormulaSimplificationTreeSizeReductionInter, 66.8ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 33.8ms SsaConstructionTime, 119.6ms SatisfiabilityAnalysisTime, 1080.8ms InterpolantComputationTime, 126 NumberOfCodeBlocks, 126 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 118 ConstructedInterpolants, 0 QuantifiedInterpolants, 890 SizeOfPredicates, 13 NumberOfNonLiveVariables, 316 ConjunctsInSsa, 95 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 1/28 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 33]: Loop Invariant Derived loop invariant: i + y + z <= x + j && x + j <= i + y + z RESULT: Ultimate proved your program to be correct! Received shutdown request...