/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/loops/lu.cmp.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-c225d54 [2021-05-02 11:49:54,366 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-02 11:49:54,367 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-02 11:49:54,400 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-05-02 11:49:54,408 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-02 11:49:54,409 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-02 11:49:54,410 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-02 11:49:54,411 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-02 11:49:54,412 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-02 11:49:54,412 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-02 11:49:54,414 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-02 11:49:54,416 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-02 11:49:54,417 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-02 11:49:54,418 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-02 11:49:54,428 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-02 11:49:54,429 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-02 11:49:54,431 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-02 11:49:54,438 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-02 11:49:54,439 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-02 11:49:54,439 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-02 11:49:54,440 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 11:49:54,474 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-02 11:49:54,474 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-02 11:49:54,475 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-05-02 11:49:54,475 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-05-02 11:49:54,475 INFO L138 SettingsManager]: * Use SBE=true [2021-05-02 11:49:54,476 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-02 11:49:54,476 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-02 11:49:54,476 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-02 11:49:54,476 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-02 11:49:54,476 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-02 11:49:54,476 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-02 11:49:54,476 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-02 11:49:54,477 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-02 11:49:54,477 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-02 11:49:54,477 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-02 11:49:54,477 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-02 11:49:54,477 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-02 11:49:54,477 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-02 11:49:54,477 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-02 11:49:54,477 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-02 11:49:54,478 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-02 11:49:54,478 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-02 11:49:54,478 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-05-02 11:49:54,478 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-05-02 11:49:54,478 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-02 11:49:54,478 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-05-02 11:49:54,478 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-02 11:49:54,479 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-05-02 11:49:54,479 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-02 11:49:54,753 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-02 11:49:54,772 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-02 11:49:54,775 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-02 11:49:54,776 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-02 11:49:54,777 INFO L275 PluginConnector]: CDTParser initialized [2021-05-02 11:49:54,778 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/lu.cmp.c [2021-05-02 11:49:54,856 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac5c84604/27ab0aa9736f443a83da4fe2ecfb047b/FLAG0dcf94848 [2021-05-02 11:49:55,339 INFO L306 CDTParser]: Found 1 translation units. [2021-05-02 11:49:55,340 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/lu.cmp.c [2021-05-02 11:49:55,349 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac5c84604/27ab0aa9736f443a83da4fe2ecfb047b/FLAG0dcf94848 [2021-05-02 11:49:55,738 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac5c84604/27ab0aa9736f443a83da4fe2ecfb047b [2021-05-02 11:49:55,741 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-02 11:49:55,743 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-05-02 11:49:55,746 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-02 11:49:55,746 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-02 11:49:55,750 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-02 11:49:55,751 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 11:49:55" (1/1) ... [2021-05-02 11:49:55,752 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@479117bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:49:55, skipping insertion in model container [2021-05-02 11:49:55,753 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 11:49:55" (1/1) ... [2021-05-02 11:49:55,759 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-02 11:49:55,785 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-02 11:49:55,887 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/lu.cmp.c[318,331] [2021-05-02 11:49:55,942 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 11:49:55,951 INFO L203 MainTranslator]: Completed pre-run [2021-05-02 11:49:55,962 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/lu.cmp.c[318,331] [2021-05-02 11:49:56,007 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 11:49:56,023 INFO L208 MainTranslator]: Completed translation [2021-05-02 11:49:56,023 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:49:56 WrapperNode [2021-05-02 11:49:56,023 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-02 11:49:56,024 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-02 11:49:56,024 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-02 11:49:56,025 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-02 11:49:56,071 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:49:56" (1/1) ... [2021-05-02 11:49:56,072 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:49:56" (1/1) ... [2021-05-02 11:49:56,095 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:49:56" (1/1) ... [2021-05-02 11:49:56,096 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:49:56" (1/1) ... [2021-05-02 11:49:56,114 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:49:56" (1/1) ... [2021-05-02 11:49:56,120 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:49:56" (1/1) ... [2021-05-02 11:49:56,122 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:49:56" (1/1) ... [2021-05-02 11:49:56,124 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-02 11:49:56,125 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-02 11:49:56,125 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-02 11:49:56,125 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-02 11:49:56,125 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:49:56" (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 11:49:56,202 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-02 11:49:56,203 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-02 11:49:56,203 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-02 11:49:56,203 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-02 11:49:56,203 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs [2021-05-02 11:49:56,203 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-02 11:49:56,204 INFO L138 BoogieDeclarations]: Found implementation of procedure ludcmp [2021-05-02 11:49:56,204 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-02 11:49:56,204 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-02 11:49:56,205 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-02 11:49:56,205 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-02 11:49:56,205 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-02 11:49:56,206 INFO L130 BoogieDeclarations]: Found specification of procedure ludcmp [2021-05-02 11:49:56,206 INFO L130 BoogieDeclarations]: Found specification of procedure fabs [2021-05-02 11:49:56,206 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-02 11:49:56,207 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-05-02 11:49:56,207 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-05-02 11:49:56,207 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-02 11:49:56,207 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-02 11:49:56,207 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-02 11:49:56,207 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-02 11:49:56,207 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-02 11:49:56,207 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-02 11:49:56,704 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-02 11:49:56,705 INFO L299 CfgBuilder]: Removed 11 assume(true) statements. [2021-05-02 11:49:56,706 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 11:49:56 BoogieIcfgContainer [2021-05-02 11:49:56,706 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-02 11:49:56,708 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-02 11:49:56,708 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-02 11:49:56,710 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-02 11:49:56,711 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.05 11:49:55" (1/3) ... [2021-05-02 11:49:56,711 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34a04607 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 11:49:56, skipping insertion in model container [2021-05-02 11:49:56,712 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:49:56" (2/3) ... [2021-05-02 11:49:56,712 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34a04607 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 11:49:56, skipping insertion in model container [2021-05-02 11:49:56,712 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 11:49:56" (3/3) ... [2021-05-02 11:49:56,713 INFO L111 eAbstractionObserver]: Analyzing ICFG lu.cmp.c [2021-05-02 11:49:56,718 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-05-02 11:49:56,721 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-02 11:49:56,734 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-02 11:49:56,763 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-02 11:49:56,763 INFO L377 AbstractCegarLoop]: Hoare is true [2021-05-02 11:49:56,763 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-05-02 11:49:56,763 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-02 11:49:56,763 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-02 11:49:56,763 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-02 11:49:56,763 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-02 11:49:56,763 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-02 11:49:56,779 INFO L276 IsEmpty]: Start isEmpty. Operand has 64 states, 52 states have (on average 1.5576923076923077) internal successors, (81), 53 states have internal predecessors, (81), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-05-02 11:49:56,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-05-02 11:49:56,784 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 11:49:56,785 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 11:49:56,785 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 11:49:56,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 11:49:56,790 INFO L82 PathProgramCache]: Analyzing trace with hash 1448102218, now seen corresponding path program 1 times [2021-05-02 11:49:56,798 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 11:49:56,800 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516273472] [2021-05-02 11:49:56,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 11:49:56,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 11:49:57,074 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 52 [2021-05-02 11:49:57,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 11:49:57,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 11:49:57,109 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 11:49:57,109 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 11:49:57,110 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516273472] [2021-05-02 11:49:57,110 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516273472] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 11:49:57,110 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 11:49:57,110 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-02 11:49:57,111 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863794279] [2021-05-02 11:49:57,114 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-02 11:49:57,114 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 11:49:57,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-02 11:49:57,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 11:49:57,138 INFO L87 Difference]: Start difference. First operand has 64 states, 52 states have (on average 1.5576923076923077) internal successors, (81), 53 states have internal predecessors, (81), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 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 11:49:57,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 11:49:57,337 INFO L93 Difference]: Finished difference Result 127 states and 191 transitions. [2021-05-02 11:49:57,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-02 11:49:57,338 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 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 12 [2021-05-02 11:49:57,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 11:49:57,345 INFO L225 Difference]: With dead ends: 127 [2021-05-02 11:49:57,345 INFO L226 Difference]: Without dead ends: 24 [2021-05-02 11:49:57,348 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 112.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 11:49:57,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-05-02 11:49:57,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 20. [2021-05-02 11:49:57,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 11:49:57,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2021-05-02 11:49:57,376 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 12 [2021-05-02 11:49:57,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 11:49:57,377 INFO L480 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2021-05-02 11:49:57,377 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 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 11:49:57,377 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2021-05-02 11:49:57,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-05-02 11:49:57,379 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 11:49:57,379 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 11:49:57,379 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-02 11:49:57,379 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 11:49:57,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 11:49:57,380 INFO L82 PathProgramCache]: Analyzing trace with hash 1436096445, now seen corresponding path program 1 times [2021-05-02 11:49:57,380 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 11:49:57,380 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62015239] [2021-05-02 11:49:57,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 11:49:57,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 11:49:57,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 11:49:57,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 11:49:57,569 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 11:49:57,569 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 11:49:57,569 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62015239] [2021-05-02 11:49:57,570 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62015239] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 11:49:57,570 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 11:49:57,570 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-05-02 11:49:57,570 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675832791] [2021-05-02 11:49:57,571 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-05-02 11:49:57,571 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 11:49:57,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-05-02 11:49:57,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-05-02 11:49:57,573 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. 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, (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 11:49:57,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 11:49:57,780 INFO L93 Difference]: Finished difference Result 40 states and 47 transitions. [2021-05-02 11:49:57,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-05-02 11:49:57,781 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, (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 12 [2021-05-02 11:49:57,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 11:49:57,782 INFO L225 Difference]: With dead ends: 40 [2021-05-02 11:49:57,782 INFO L226 Difference]: Without dead ends: 26 [2021-05-02 11:49:57,783 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 172.9ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-05-02 11:49:57,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-05-02 11:49:57,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 21. [2021-05-02 11:49:57,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 15 states have (on average 1.2) internal successors, (18), 15 states have internal predecessors, (18), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 11:49:57,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2021-05-02 11:49:57,797 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 12 [2021-05-02 11:49:57,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 11:49:57,797 INFO L480 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2021-05-02 11:49:57,797 INFO L481 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, (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 11:49:57,798 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2021-05-02 11:49:57,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-05-02 11:49:57,798 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 11:49:57,798 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 11:49:57,799 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-02 11:49:57,799 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 11:49:57,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 11:49:57,807 INFO L82 PathProgramCache]: Analyzing trace with hash 1858105272, now seen corresponding path program 1 times [2021-05-02 11:49:57,808 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 11:49:57,808 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805299324] [2021-05-02 11:49:57,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 11:49:57,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 11:49:57,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 11:49:57,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 11:49:57,981 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-05-02 11:49:57,981 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 11:49:57,981 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805299324] [2021-05-02 11:49:57,982 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805299324] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 11:49:57,982 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 11:49:57,982 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-05-02 11:49:57,982 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197623828] [2021-05-02 11:49:57,982 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-02 11:49:57,983 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 11:49:57,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-02 11:49:57,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-05-02 11:49:57,985 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand has 6 states, 6 states have (on average 2.0) internal successors, (12), 4 states have internal predecessors, (12), 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 11:49:58,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 11:49:58,249 INFO L93 Difference]: Finished difference Result 36 states and 40 transitions. [2021-05-02 11:49:58,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-02 11:49:58,250 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 4 states have internal predecessors, (12), 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 16 [2021-05-02 11:49:58,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 11:49:58,250 INFO L225 Difference]: With dead ends: 36 [2021-05-02 11:49:58,250 INFO L226 Difference]: Without dead ends: 34 [2021-05-02 11:49:58,251 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 220.1ms TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-05-02 11:49:58,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-05-02 11:49:58,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2021-05-02 11:49:58,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 24 states have (on average 1.2083333333333333) internal successors, (29), 25 states have internal predecessors, (29), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-02 11:49:58,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2021-05-02 11:49:58,257 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 16 [2021-05-02 11:49:58,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 11:49:58,258 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2021-05-02 11:49:58,258 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 4 states have internal predecessors, (12), 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 11:49:58,258 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2021-05-02 11:49:58,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-02 11:49:58,259 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 11:49:58,259 INFO L523 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 11:49:58,259 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-05-02 11:49:58,259 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 11:49:58,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 11:49:58,259 INFO L82 PathProgramCache]: Analyzing trace with hash 419710194, now seen corresponding path program 1 times [2021-05-02 11:49:58,260 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 11:49:58,260 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259473983] [2021-05-02 11:49:58,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 11:49:58,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 11:49:58,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 11:49:58,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 11:49:58,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-05-02 11:49:58,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 11:49:58,357 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-05-02 11:49:58,357 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 11:49:58,357 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259473983] [2021-05-02 11:49:58,358 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259473983] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 11:49:58,358 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [422809148] [2021-05-02 11:49:58,358 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 11:49:58,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 11:49:58,462 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 4 conjunts are in the unsatisfiable core [2021-05-02 11:49:58,466 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 11:49:58,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 11:49:58,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 11:49:58,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 11:49:58,595 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-02 11:49:58,596 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [422809148] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 11:49:58,596 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 11:49:58,596 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 10 [2021-05-02 11:49:58,596 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238493906] [2021-05-02 11:49:58,597 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-02 11:49:58,597 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 11:49:58,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-02 11:49:58,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-05-02 11:49:58,598 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand has 10 states, 10 states have (on average 4.3) internal successors, (43), 8 states have internal predecessors, (43), 4 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-02 11:49:59,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 11:49:59,015 INFO L93 Difference]: Finished difference Result 88 states and 106 transitions. [2021-05-02 11:49:59,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-05-02 11:49:59,016 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.3) internal successors, (43), 8 states have internal predecessors, (43), 4 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 29 [2021-05-02 11:49:59,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 11:49:59,017 INFO L225 Difference]: With dead ends: 88 [2021-05-02 11:49:59,017 INFO L226 Difference]: Without dead ends: 68 [2021-05-02 11:49:59,018 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 351.0ms TimeCoverageRelationStatistics Valid=104, Invalid=316, Unknown=0, NotChecked=0, Total=420 [2021-05-02 11:49:59,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2021-05-02 11:49:59,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 58. [2021-05-02 11:49:59,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 48 states have (on average 1.2291666666666667) internal successors, (59), 49 states have internal predecessors, (59), 5 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2021-05-02 11:49:59,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 68 transitions. [2021-05-02 11:49:59,028 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 68 transitions. Word has length 29 [2021-05-02 11:49:59,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 11:49:59,028 INFO L480 AbstractCegarLoop]: Abstraction has 58 states and 68 transitions. [2021-05-02 11:49:59,028 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 4.3) internal successors, (43), 8 states have internal predecessors, (43), 4 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-02 11:49:59,028 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 68 transitions. [2021-05-02 11:49:59,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-05-02 11:49:59,032 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 11:49:59,032 INFO L523 BasicCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 11:49:59,250 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 11:49:59,253 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 11:49:59,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 11:49:59,253 INFO L82 PathProgramCache]: Analyzing trace with hash -730127667, now seen corresponding path program 1 times [2021-05-02 11:49:59,254 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 11:49:59,254 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398094593] [2021-05-02 11:49:59,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 11:49:59,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 11:49:59,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 11:49:59,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 11:49:59,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-05-02 11:49:59,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 11:49:59,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-05-02 11:49:59,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 11:49:59,401 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 4 proven. 44 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2021-05-02 11:49:59,401 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 11:49:59,401 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398094593] [2021-05-02 11:49:59,401 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398094593] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 11:49:59,402 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1015308210] [2021-05-02 11:49:59,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 11:49:59,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 11:49:59,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 5 conjunts are in the unsatisfiable core [2021-05-02 11:49:59,490 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 11:49:59,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 11:49:59,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 11:49:59,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 11:49:59,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 11:49:59,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 11:49:59,688 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 44 proven. 6 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2021-05-02 11:49:59,688 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1015308210] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 11:49:59,688 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 11:49:59,688 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 11 [2021-05-02 11:49:59,688 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816024712] [2021-05-02 11:49:59,689 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-05-02 11:49:59,689 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 11:49:59,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-05-02 11:49:59,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-05-02 11:49:59,690 INFO L87 Difference]: Start difference. First operand 58 states and 68 transitions. Second operand has 11 states, 11 states have (on average 4.454545454545454) internal successors, (49), 9 states have internal predecessors, (49), 4 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-02 11:50:00,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 11:50:00,020 INFO L93 Difference]: Finished difference Result 126 states and 152 transitions. [2021-05-02 11:50:00,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-05-02 11:50:00,021 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.454545454545454) internal successors, (49), 9 states have internal predecessors, (49), 4 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 54 [2021-05-02 11:50:00,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 11:50:00,021 INFO L225 Difference]: With dead ends: 126 [2021-05-02 11:50:00,021 INFO L226 Difference]: Without dead ends: 0 [2021-05-02 11:50:00,025 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 335.3ms TimeCoverageRelationStatistics Valid=98, Invalid=282, Unknown=0, NotChecked=0, Total=380 [2021-05-02 11:50:00,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-05-02 11:50:00,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-05-02 11:50:00,025 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 11:50:00,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-05-02 11:50:00,025 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 54 [2021-05-02 11:50:00,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 11:50:00,025 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-05-02 11:50:00,026 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 4.454545454545454) internal successors, (49), 9 states have internal predecessors, (49), 4 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-02 11:50:00,026 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-05-02 11:50:00,026 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-02 11:50:00,248 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 11:50:00,250 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-05-02 11:50:00,439 INFO L198 CegarLoopUtils]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2021-05-02 11:50:00,439 INFO L198 CegarLoopUtils]: For program point reach_errorENTRY(line 3) no Hoare annotation was computed. [2021-05-02 11:50:00,440 INFO L198 CegarLoopUtils]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed. [2021-05-02 11:50:00,440 INFO L198 CegarLoopUtils]: For program point L118-2(lines 118 136) no Hoare annotation was computed. [2021-05-02 11:50:00,440 INFO L201 CegarLoopUtils]: At program point L118-3(lines 118 136) the Hoare annotation is: true [2021-05-02 11:50:00,440 INFO L198 CegarLoopUtils]: For program point L118-4(lines 118 136) no Hoare annotation was computed. [2021-05-02 11:50:00,440 INFO L201 CegarLoopUtils]: At program point L120(line 120) the Hoare annotation is: true [2021-05-02 11:50:00,440 INFO L198 CegarLoopUtils]: For program point L120-1(line 120) no Hoare annotation was computed. [2021-05-02 11:50:00,440 INFO L198 CegarLoopUtils]: For program point ludcmpEXIT(lines 111 155) no Hoare annotation was computed. [2021-05-02 11:50:00,440 INFO L194 CegarLoopUtils]: At program point ludcmpENTRY(lines 111 155) the Hoare annotation is: (and (= |old(#memory_real)| |#memory_real|) (= |old(#length)| |#length|) (= |old(#valid)| |#valid|)) [2021-05-02 11:50:00,440 INFO L198 CegarLoopUtils]: For program point L129-2(lines 129 135) no Hoare annotation was computed. [2021-05-02 11:50:00,440 INFO L201 CegarLoopUtils]: At program point L129-3(lines 129 135) the Hoare annotation is: true [2021-05-02 11:50:00,440 INFO L198 CegarLoopUtils]: For program point L121-2(lines 121 128) no Hoare annotation was computed. [2021-05-02 11:50:00,441 INFO L201 CegarLoopUtils]: At program point L121-3(lines 121 128) the Hoare annotation is: true [2021-05-02 11:50:00,441 INFO L198 CegarLoopUtils]: For program point L121-4(lines 121 128) no Hoare annotation was computed. [2021-05-02 11:50:00,441 INFO L198 CegarLoopUtils]: For program point L146-2(lines 146 152) no Hoare annotation was computed. [2021-05-02 11:50:00,441 INFO L201 CegarLoopUtils]: At program point L146-3(lines 146 152) the Hoare annotation is: true [2021-05-02 11:50:00,441 INFO L198 CegarLoopUtils]: For program point L146-4(lines 146 152) no Hoare annotation was computed. [2021-05-02 11:50:00,441 INFO L198 CegarLoopUtils]: For program point ludcmpFINAL(lines 111 155) no Hoare annotation was computed. [2021-05-02 11:50:00,441 INFO L198 CegarLoopUtils]: For program point L138-2(lines 138 144) no Hoare annotation was computed. [2021-05-02 11:50:00,441 INFO L201 CegarLoopUtils]: At program point L138-3(lines 138 144) the Hoare annotation is: true [2021-05-02 11:50:00,441 INFO L198 CegarLoopUtils]: For program point L138-4(lines 138 144) no Hoare annotation was computed. [2021-05-02 11:50:00,441 INFO L198 CegarLoopUtils]: For program point L132-2(lines 132 133) no Hoare annotation was computed. [2021-05-02 11:50:00,441 INFO L201 CegarLoopUtils]: At program point L132-3(lines 132 133) the Hoare annotation is: true [2021-05-02 11:50:00,441 INFO L198 CegarLoopUtils]: For program point L132-4(lines 132 133) no Hoare annotation was computed. [2021-05-02 11:50:00,441 INFO L198 CegarLoopUtils]: For program point L124(lines 124 126) no Hoare annotation was computed. [2021-05-02 11:50:00,442 INFO L198 CegarLoopUtils]: For program point L124-1(lines 124 126) no Hoare annotation was computed. [2021-05-02 11:50:00,442 INFO L198 CegarLoopUtils]: For program point L149-2(lines 149 150) no Hoare annotation was computed. [2021-05-02 11:50:00,442 INFO L201 CegarLoopUtils]: At program point L149-3(lines 149 150) the Hoare annotation is: true [2021-05-02 11:50:00,442 INFO L198 CegarLoopUtils]: For program point L149-4(lines 149 150) no Hoare annotation was computed. [2021-05-02 11:50:00,442 INFO L198 CegarLoopUtils]: For program point L141-2(lines 141 142) no Hoare annotation was computed. [2021-05-02 11:50:00,442 INFO L201 CegarLoopUtils]: At program point L141-3(lines 141 142) the Hoare annotation is: true [2021-05-02 11:50:00,442 INFO L198 CegarLoopUtils]: For program point L141-4(lines 141 142) no Hoare annotation was computed. [2021-05-02 11:50:00,442 INFO L198 CegarLoopUtils]: For program point L125-2(lines 125 126) no Hoare annotation was computed. [2021-05-02 11:50:00,442 INFO L201 CegarLoopUtils]: At program point L125-3(lines 125 126) the Hoare annotation is: true [2021-05-02 11:50:00,442 INFO L198 CegarLoopUtils]: For program point L117(line 117) no Hoare annotation was computed. [2021-05-02 11:50:00,442 INFO L198 CegarLoopUtils]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2021-05-02 11:50:00,443 INFO L194 CegarLoopUtils]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string5.offset| |old(#t~string5.offset)|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= |~#a~0.offset| |old(~#a~0.offset)|) (= |~#b~0.base| |old(~#b~0.base)|) (= |~#x~0.base| |old(~#x~0.base)|) (= |~#a~0.base| |old(~#a~0.base)|) (= |#t~string4.offset| |old(#t~string4.offset)|) (= |old(#valid)| |#valid|) (= |#t~string5.base| |old(#t~string5.base)|) (= |~#x~0.offset| |old(~#x~0.offset)|) (= |old(#memory_real)| |#memory_real|) (= |~#b~0.offset| |old(~#b~0.offset)|) (= |#t~string4.base| |old(#t~string4.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2021-05-02 11:50:00,443 INFO L198 CegarLoopUtils]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2021-05-02 11:50:00,443 INFO L198 CegarLoopUtils]: For program point L80(lines 80 81) no Hoare annotation was computed. [2021-05-02 11:50:00,443 INFO L198 CegarLoopUtils]: For program point L80-2(lines 80 81) no Hoare annotation was computed. [2021-05-02 11:50:00,443 INFO L198 CegarLoopUtils]: For program point fabsEXIT(lines 76 83) no Hoare annotation was computed. [2021-05-02 11:50:00,443 INFO L201 CegarLoopUtils]: At program point fabsENTRY(lines 76 83) the Hoare annotation is: true [2021-05-02 11:50:00,443 INFO L198 CegarLoopUtils]: For program point fabsFINAL(lines 76 83) no Hoare annotation was computed. [2021-05-02 11:50:00,443 INFO L198 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-05-02 11:50:00,443 INFO L201 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-05-02 11:50:00,443 INFO L201 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-05-02 11:50:00,443 INFO L198 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-05-02 11:50:00,443 INFO L198 CegarLoopUtils]: For program point L99-2(line 99) no Hoare annotation was computed. [2021-05-02 11:50:00,443 INFO L198 CegarLoopUtils]: For program point L93-2(lines 93 104) no Hoare annotation was computed. [2021-05-02 11:50:00,443 INFO L194 CegarLoopUtils]: At program point L93-3(lines 93 104) the Hoare annotation is: (and (<= main_~n~0 5) (<= 5 main_~n~0)) [2021-05-02 11:50:00,444 INFO L201 CegarLoopUtils]: At program point L93-4(lines 93 104) the Hoare annotation is: true [2021-05-02 11:50:00,444 INFO L198 CegarLoopUtils]: For program point mainEXIT(lines 85 109) no Hoare annotation was computed. [2021-05-02 11:50:00,444 INFO L198 CegarLoopUtils]: For program point mainFINAL(lines 85 109) no Hoare annotation was computed. [2021-05-02 11:50:00,444 INFO L198 CegarLoopUtils]: For program point L106(line 106) no Hoare annotation was computed. [2021-05-02 11:50:00,444 INFO L198 CegarLoopUtils]: For program point L102(line 102) no Hoare annotation was computed. [2021-05-02 11:50:00,444 INFO L198 CegarLoopUtils]: For program point L96-2(lines 96 101) no Hoare annotation was computed. [2021-05-02 11:50:00,444 INFO L194 CegarLoopUtils]: At program point mainENTRY(lines 85 109) the Hoare annotation is: (and (= |old(#memory_real)| |#memory_real|) (= |old(#length)| |#length|) (= |old(#valid)| |#valid|)) [2021-05-02 11:50:00,444 INFO L194 CegarLoopUtils]: At program point L96-3(lines 96 101) the Hoare annotation is: (and (<= main_~i~0 5) (<= main_~n~0 5) (<= 5 main_~n~0)) [2021-05-02 11:50:00,444 INFO L194 CegarLoopUtils]: At program point L96-4(lines 96 101) the Hoare annotation is: (and (<= main_~i~0 5) (<= main_~n~0 5) (<= 5 main_~n~0)) [2021-05-02 11:50:00,444 INFO L198 CegarLoopUtils]: For program point L99(line 99) no Hoare annotation was computed. [2021-05-02 11:50:00,444 INFO L201 CegarLoopUtils]: At program point __VERIFIER_assertENTRY(lines 5 10) the Hoare annotation is: true [2021-05-02 11:50:00,444 INFO L198 CegarLoopUtils]: For program point __VERIFIER_assertEXIT(lines 5 10) no Hoare annotation was computed. [2021-05-02 11:50:00,446 INFO L198 CegarLoopUtils]: For program point L7(line 7) no Hoare annotation was computed. [2021-05-02 11:50:00,446 INFO L198 CegarLoopUtils]: For program point L6(lines 6 8) no Hoare annotation was computed. [2021-05-02 11:50:00,446 INFO L198 CegarLoopUtils]: For program point L6-2(lines 5 10) no Hoare annotation was computed. [2021-05-02 11:50:00,446 INFO L198 CegarLoopUtils]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 7) no Hoare annotation was computed. [2021-05-02 11:50:00,457 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.05 11:50:00 BoogieIcfgContainer [2021-05-02 11:50:00,457 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-02 11:50:00,458 INFO L168 Benchmark]: Toolchain (without parser) took 4715.18 ms. Allocated memory was 186.6 MB in the beginning and 224.4 MB in the end (delta: 37.7 MB). Free memory was 151.5 MB in the beginning and 178.8 MB in the end (delta: -27.4 MB). Peak memory consumption was 112.6 MB. Max. memory is 8.0 GB. [2021-05-02 11:50:00,458 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 186.6 MB. Free memory is still 168.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-02 11:50:00,458 INFO L168 Benchmark]: CACSL2BoogieTranslator took 277.54 ms. Allocated memory is still 186.6 MB. Free memory was 151.3 MB in the beginning and 139.3 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-05-02 11:50:00,458 INFO L168 Benchmark]: Boogie Preprocessor took 99.84 ms. Allocated memory is still 186.6 MB. Free memory was 139.3 MB in the beginning and 168.4 MB in the end (delta: -29.1 MB). Peak memory consumption was 4.0 MB. Max. memory is 8.0 GB. [2021-05-02 11:50:00,458 INFO L168 Benchmark]: RCFGBuilder took 581.36 ms. Allocated memory is still 186.6 MB. Free memory was 168.4 MB in the beginning and 139.6 MB in the end (delta: 28.8 MB). Peak memory consumption was 28.3 MB. Max. memory is 8.0 GB. [2021-05-02 11:50:00,458 INFO L168 Benchmark]: TraceAbstraction took 3749.70 ms. Allocated memory was 186.6 MB in the beginning and 224.4 MB in the end (delta: 37.7 MB). Free memory was 139.1 MB in the beginning and 178.8 MB in the end (delta: -39.8 MB). Peak memory consumption was 99.2 MB. Max. memory is 8.0 GB. [2021-05-02 11:50:00,459 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 186.6 MB. Free memory is still 168.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 277.54 ms. Allocated memory is still 186.6 MB. Free memory was 151.3 MB in the beginning and 139.3 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 99.84 ms. Allocated memory is still 186.6 MB. Free memory was 139.3 MB in the beginning and 168.4 MB in the end (delta: -29.1 MB). Peak memory consumption was 4.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 581.36 ms. Allocated memory is still 186.6 MB. Free memory was 168.4 MB in the beginning and 139.6 MB in the end (delta: 28.8 MB). Peak memory consumption was 28.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 3749.70 ms. Allocated memory was 186.6 MB in the beginning and 224.4 MB in the end (delta: 37.7 MB). Free memory was 139.1 MB in the beginning and 178.8 MB in the end (delta: -39.8 MB). Peak memory consumption was 99.2 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 7]: 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 7 procedures, 67 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3488.3ms, OverallIterations: 5, TraceHistogramMax: 6, EmptinessCheckTime: 15.5ms, AutomataDifference: 1469.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 189.8ms, InitialAbstractionConstructionTime: 12.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 123 SDtfs, 190 SDslu, 115 SDs, 0 SdLazy, 344 SolverSat, 58 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 412.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 148 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 1192.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=64occurred in iteration=0, InterpolantAutomatonStates: 47, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 46.7ms AutomataMinimizationTime, 5 MinimizatonAttempts, 21 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 21 LocationsWithAnnotation, 53 PreInvPairs, 94 NumberOfFragments, 114 HoareAnnotationTreeSize, 53 FomulaSimplifications, 730 FormulaSimplificationTreeSizeReduction, 62.7ms HoareSimplificationTime, 21 FomulaSimplificationsInter, 194 FormulaSimplificationTreeSizeReductionInter, 116.7ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 54.0ms SsaConstructionTime, 201.9ms SatisfiabilityAnalysisTime, 1030.3ms InterpolantComputationTime, 206 NumberOfCodeBlocks, 206 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 199 ConstructedInterpolants, 0 QuantifiedInterpolants, 688 SizeOfPredicates, 4 NumberOfNonLiveVariables, 422 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 7 InterpolantComputations, 3 PerfectInterpolantSequences, 161/221 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: 132]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 138]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 149]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 118]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 96]: Loop Invariant Derived loop invariant: (i <= 5 && n <= 5) && 5 <= n - InvariantResult [Line: 129]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 146]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 125]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 141]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 93]: Loop Invariant Derived loop invariant: n <= 5 && 5 <= n - InvariantResult [Line: 121]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! Received shutdown request...