/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/loop-invgen/sendmail-close-angle.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-06 16:50:22,847 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-06 16:50:22,850 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-06 16:50:22,896 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-06 16:50:22,897 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-06 16:50:22,901 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-06 16:50:22,904 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-06 16:50:22,918 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-06 16:50:22,920 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-06 16:50:22,921 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-06 16:50:22,922 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-06 16:50:22,924 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-06 16:50:22,924 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-06 16:50:22,925 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-06 16:50:22,927 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-06 16:50:22,928 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-06 16:50:22,929 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-06 16:50:22,930 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-06 16:50:22,932 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-06 16:50:22,934 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-06 16:50:22,935 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-06 16:50:22,937 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-06 16:50:22,938 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-06 16:50:22,940 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-06 16:50:22,945 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-06 16:50:22,954 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-06 16:50:22,955 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-06 16:50:22,956 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-06 16:50:22,957 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-06 16:50:22,958 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-06 16:50:22,959 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-06 16:50:22,960 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-06 16:50:22,960 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-06 16:50:22,963 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-06 16:50:22,968 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-06 16:50:22,968 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-06 16:50:22,969 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-01-06 16:50:23,014 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-06 16:50:23,015 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-06 16:50:23,019 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-06 16:50:23,019 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-06 16:50:23,019 INFO L138 SettingsManager]: * Use SBE=true [2021-01-06 16:50:23,019 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-06 16:50:23,020 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-06 16:50:23,020 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-06 16:50:23,020 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-06 16:50:23,020 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-06 16:50:23,021 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-06 16:50:23,021 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-06 16:50:23,021 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-06 16:50:23,022 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-06 16:50:23,022 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-06 16:50:23,022 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-06 16:50:23,022 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-06 16:50:23,022 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 16:50:23,023 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-06 16:50:23,023 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-06 16:50:23,023 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-06 16:50:23,023 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-06 16:50:23,023 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-06 16:50:23,023 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-06 16:50:23,024 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-06 16:50:23,024 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-bitabs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-06 16:50:23,374 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-06 16:50:23,407 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-06 16:50:23,410 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-06 16:50:23,412 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-06 16:50:23,413 INFO L275 PluginConnector]: CDTParser initialized [2021-01-06 16:50:23,414 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-invgen/sendmail-close-angle.i [2021-01-06 16:50:23,496 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/7a7ad9841/fec7a578b01c4706872b62cb2204682e/FLAGfdf05ea56 [2021-01-06 16:50:24,083 INFO L306 CDTParser]: Found 1 translation units. [2021-01-06 16:50:24,086 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/loop-invgen/sendmail-close-angle.i [2021-01-06 16:50:24,094 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/7a7ad9841/fec7a578b01c4706872b62cb2204682e/FLAGfdf05ea56 [2021-01-06 16:50:24,412 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/7a7ad9841/fec7a578b01c4706872b62cb2204682e [2021-01-06 16:50:24,420 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-06 16:50:24,425 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-06 16:50:24,430 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-06 16:50:24,431 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-06 16:50:24,435 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-06 16:50:24,435 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 04:50:24" (1/1) ... [2021-01-06 16:50:24,437 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4778df5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:50:24, skipping insertion in model container [2021-01-06 16:50:24,437 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 04:50:24" (1/1) ... [2021-01-06 16:50:24,445 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-06 16:50:24,462 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-01-06 16:50:24,618 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/loop-invgen/sendmail-close-angle.i[893,906] left hand side expression in assignment: lhs: VariableLHS[~buf~0,] left hand side expression in assignment: lhs: VariableLHS[~in~0,] left hand side expression in assignment: lhs: VariableLHS[~buflim~0,] [2021-01-06 16:50:24,635 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 16:50:24,644 INFO L203 MainTranslator]: Completed pre-run [2021-01-06 16:50:24,658 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/loop-invgen/sendmail-close-angle.i[893,906] left hand side expression in assignment: lhs: VariableLHS[~buf~0,] left hand side expression in assignment: lhs: VariableLHS[~in~0,] left hand side expression in assignment: lhs: VariableLHS[~buflim~0,] [2021-01-06 16:50:24,664 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 16:50:24,680 INFO L208 MainTranslator]: Completed translation [2021-01-06 16:50:24,681 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:50:24 WrapperNode [2021-01-06 16:50:24,681 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-06 16:50:24,682 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-06 16:50:24,682 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-06 16:50:24,683 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-06 16:50:24,691 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:50:24" (1/1) ... [2021-01-06 16:50:24,698 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:50:24" (1/1) ... [2021-01-06 16:50:24,720 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-06 16:50:24,721 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-06 16:50:24,721 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-06 16:50:24,721 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-06 16:50:24,730 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:50:24" (1/1) ... [2021-01-06 16:50:24,730 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:50:24" (1/1) ... [2021-01-06 16:50:24,732 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:50:24" (1/1) ... [2021-01-06 16:50:24,732 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:50:24" (1/1) ... [2021-01-06 16:50:24,737 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:50:24" (1/1) ... [2021-01-06 16:50:24,742 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:50:24" (1/1) ... [2021-01-06 16:50:24,744 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:50:24" (1/1) ... [2021-01-06 16:50:24,746 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-06 16:50:24,747 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-06 16:50:24,747 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-06 16:50:24,747 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-06 16:50:24,748 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:50:24" (1/1) ... No working directory specified, using /storage/repos/ultimate-bitabs/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 [2021-01-06 16:50:24,875 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-06 16:50:24,876 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-06 16:50:24,876 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-06 16:50:24,876 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-06 16:50:25,213 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-06 16:50:25,213 INFO L299 CfgBuilder]: Removed 21 assume(true) statements. [2021-01-06 16:50:25,215 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 04:50:25 BoogieIcfgContainer [2021-01-06 16:50:25,215 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-06 16:50:25,218 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-06 16:50:25,218 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-06 16:50:25,221 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-06 16:50:25,222 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.01 04:50:24" (1/3) ... [2021-01-06 16:50:25,223 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79c5c5ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 04:50:25, skipping insertion in model container [2021-01-06 16:50:25,223 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:50:24" (2/3) ... [2021-01-06 16:50:25,223 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79c5c5ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 04:50:25, skipping insertion in model container [2021-01-06 16:50:25,224 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 04:50:25" (3/3) ... [2021-01-06 16:50:25,226 INFO L111 eAbstractionObserver]: Analyzing ICFG sendmail-close-angle.i [2021-01-06 16:50:25,233 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-06 16:50:25,238 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 8 error locations. [2021-01-06 16:50:25,260 INFO L253 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2021-01-06 16:50:25,290 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-06 16:50:25,291 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-06 16:50:25,291 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-06 16:50:25,291 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-06 16:50:25,291 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-06 16:50:25,291 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-06 16:50:25,291 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-06 16:50:25,292 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-06 16:50:25,310 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states. [2021-01-06 16:50:25,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-01-06 16:50:25,316 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:50:25,317 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:50:25,318 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:50:25,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:50:25,325 INFO L82 PathProgramCache]: Analyzing trace with hash 688476657, now seen corresponding path program 1 times [2021-01-06 16:50:25,336 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:50:25,336 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378683677] [2021-01-06 16:50:25,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:50:25,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:50:25,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:50:25,494 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378683677] [2021-01-06 16:50:25,495 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 16:50:25,496 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-06 16:50:25,497 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429888171] [2021-01-06 16:50:25,501 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-01-06 16:50:25,502 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:50:25,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-01-06 16:50:25,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-01-06 16:50:25,520 INFO L87 Difference]: Start difference. First operand 46 states. Second operand 2 states. [2021-01-06 16:50:25,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:50:25,544 INFO L93 Difference]: Finished difference Result 86 states and 109 transitions. [2021-01-06 16:50:25,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-01-06 16:50:25,546 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2021-01-06 16:50:25,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:50:25,556 INFO L225 Difference]: With dead ends: 86 [2021-01-06 16:50:25,556 INFO L226 Difference]: Without dead ends: 41 [2021-01-06 16:50:25,560 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-01-06 16:50:25,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-01-06 16:50:25,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2021-01-06 16:50:25,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2021-01-06 16:50:25,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 42 transitions. [2021-01-06 16:50:25,600 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 42 transitions. Word has length 10 [2021-01-06 16:50:25,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:50:25,601 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 42 transitions. [2021-01-06 16:50:25,601 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-01-06 16:50:25,601 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 42 transitions. [2021-01-06 16:50:25,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-01-06 16:50:25,602 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:50:25,602 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:50:25,602 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-06 16:50:25,603 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:50:25,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:50:25,604 INFO L82 PathProgramCache]: Analyzing trace with hash -186371961, now seen corresponding path program 1 times [2021-01-06 16:50:25,604 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:50:25,605 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687460321] [2021-01-06 16:50:25,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:50:25,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:50:25,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:50:25,726 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687460321] [2021-01-06 16:50:25,729 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 16:50:25,729 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 16:50:25,730 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685370182] [2021-01-06 16:50:25,733 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 16:50:25,733 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:50:25,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 16:50:25,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 16:50:25,735 INFO L87 Difference]: Start difference. First operand 41 states and 42 transitions. Second operand 4 states. [2021-01-06 16:50:25,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:50:25,893 INFO L93 Difference]: Finished difference Result 45 states and 48 transitions. [2021-01-06 16:50:25,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-06 16:50:25,894 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2021-01-06 16:50:25,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:50:25,898 INFO L225 Difference]: With dead ends: 45 [2021-01-06 16:50:25,898 INFO L226 Difference]: Without dead ends: 39 [2021-01-06 16:50:25,900 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-01-06 16:50:25,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-01-06 16:50:25,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 35. [2021-01-06 16:50:25,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2021-01-06 16:50:25,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 36 transitions. [2021-01-06 16:50:25,907 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 36 transitions. Word has length 11 [2021-01-06 16:50:25,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:50:25,907 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 36 transitions. [2021-01-06 16:50:25,907 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 16:50:25,908 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 36 transitions. [2021-01-06 16:50:25,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-01-06 16:50:25,908 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:50:25,909 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:50:25,909 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-01-06 16:50:25,909 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:50:25,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:50:25,910 INFO L82 PathProgramCache]: Analyzing trace with hash 1285329802, now seen corresponding path program 1 times [2021-01-06 16:50:25,910 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:50:25,911 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329665709] [2021-01-06 16:50:25,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:50:25,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:50:25,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:50:25,992 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329665709] [2021-01-06 16:50:25,992 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 16:50:25,992 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 16:50:25,993 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547227633] [2021-01-06 16:50:25,993 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 16:50:25,993 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:50:25,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 16:50:25,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-01-06 16:50:25,995 INFO L87 Difference]: Start difference. First operand 35 states and 36 transitions. Second operand 5 states. [2021-01-06 16:50:26,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:50:26,169 INFO L93 Difference]: Finished difference Result 51 states and 54 transitions. [2021-01-06 16:50:26,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 16:50:26,170 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2021-01-06 16:50:26,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:50:26,171 INFO L225 Difference]: With dead ends: 51 [2021-01-06 16:50:26,171 INFO L226 Difference]: Without dead ends: 47 [2021-01-06 16:50:26,172 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-01-06 16:50:26,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-01-06 16:50:26,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 45. [2021-01-06 16:50:26,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2021-01-06 16:50:26,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 48 transitions. [2021-01-06 16:50:26,182 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 48 transitions. Word has length 13 [2021-01-06 16:50:26,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:50:26,183 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 48 transitions. [2021-01-06 16:50:26,183 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 16:50:26,183 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 48 transitions. [2021-01-06 16:50:26,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-01-06 16:50:26,184 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:50:26,184 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:50:26,184 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-01-06 16:50:26,184 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:50:26,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:50:26,185 INFO L82 PathProgramCache]: Analyzing trace with hash 825693350, now seen corresponding path program 1 times [2021-01-06 16:50:26,186 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:50:26,186 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100522537] [2021-01-06 16:50:26,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:50:26,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:50:26,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:50:26,237 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100522537] [2021-01-06 16:50:26,237 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 16:50:26,237 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 16:50:26,237 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524996484] [2021-01-06 16:50:26,238 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 16:50:26,238 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:50:26,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 16:50:26,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 16:50:26,239 INFO L87 Difference]: Start difference. First operand 45 states and 48 transitions. Second operand 4 states. [2021-01-06 16:50:26,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:50:26,323 INFO L93 Difference]: Finished difference Result 56 states and 58 transitions. [2021-01-06 16:50:26,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 16:50:26,325 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2021-01-06 16:50:26,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:50:26,327 INFO L225 Difference]: With dead ends: 56 [2021-01-06 16:50:26,327 INFO L226 Difference]: Without dead ends: 54 [2021-01-06 16:50:26,327 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-01-06 16:50:26,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2021-01-06 16:50:26,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 48. [2021-01-06 16:50:26,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2021-01-06 16:50:26,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 51 transitions. [2021-01-06 16:50:26,344 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 51 transitions. Word has length 16 [2021-01-06 16:50:26,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:50:26,345 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 51 transitions. [2021-01-06 16:50:26,345 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 16:50:26,345 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 51 transitions. [2021-01-06 16:50:26,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-01-06 16:50:26,346 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:50:26,348 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:50:26,348 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-01-06 16:50:26,349 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:50:26,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:50:26,349 INFO L82 PathProgramCache]: Analyzing trace with hash -960063632, now seen corresponding path program 1 times [2021-01-06 16:50:26,349 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:50:26,350 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194415243] [2021-01-06 16:50:26,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:50:26,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:50:26,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:50:26,482 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194415243] [2021-01-06 16:50:26,482 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 16:50:26,482 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-06 16:50:26,482 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355160800] [2021-01-06 16:50:26,483 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 16:50:26,483 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:50:26,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 16:50:26,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-01-06 16:50:26,487 INFO L87 Difference]: Start difference. First operand 48 states and 51 transitions. Second operand 6 states. [2021-01-06 16:50:26,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:50:26,689 INFO L93 Difference]: Finished difference Result 74 states and 78 transitions. [2021-01-06 16:50:26,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-01-06 16:50:26,692 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2021-01-06 16:50:26,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:50:26,696 INFO L225 Difference]: With dead ends: 74 [2021-01-06 16:50:26,696 INFO L226 Difference]: Without dead ends: 60 [2021-01-06 16:50:26,698 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-01-06 16:50:26,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-01-06 16:50:26,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 56. [2021-01-06 16:50:26,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2021-01-06 16:50:26,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 60 transitions. [2021-01-06 16:50:26,722 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 60 transitions. Word has length 17 [2021-01-06 16:50:26,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:50:26,722 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 60 transitions. [2021-01-06 16:50:26,722 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 16:50:26,722 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 60 transitions. [2021-01-06 16:50:26,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-01-06 16:50:26,724 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:50:26,724 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:50:26,724 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-01-06 16:50:26,725 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:50:26,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:50:26,726 INFO L82 PathProgramCache]: Analyzing trace with hash -1077483319, now seen corresponding path program 1 times [2021-01-06 16:50:26,726 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:50:26,726 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926586663] [2021-01-06 16:50:26,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:50:26,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:50:26,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:50:26,845 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926586663] [2021-01-06 16:50:26,846 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 16:50:26,846 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-01-06 16:50:26,846 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594004538] [2021-01-06 16:50:26,847 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-06 16:50:26,847 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:50:26,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-06 16:50:26,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-01-06 16:50:26,849 INFO L87 Difference]: Start difference. First operand 56 states and 60 transitions. Second operand 7 states. [2021-01-06 16:50:27,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:50:27,055 INFO L93 Difference]: Finished difference Result 66 states and 68 transitions. [2021-01-06 16:50:27,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-06 16:50:27,056 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2021-01-06 16:50:27,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:50:27,057 INFO L225 Difference]: With dead ends: 66 [2021-01-06 16:50:27,060 INFO L226 Difference]: Without dead ends: 64 [2021-01-06 16:50:27,061 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=58, Invalid=98, Unknown=0, NotChecked=0, Total=156 [2021-01-06 16:50:27,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-01-06 16:50:27,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 56. [2021-01-06 16:50:27,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2021-01-06 16:50:27,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 59 transitions. [2021-01-06 16:50:27,078 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 59 transitions. Word has length 18 [2021-01-06 16:50:27,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:50:27,078 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 59 transitions. [2021-01-06 16:50:27,078 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-06 16:50:27,079 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 59 transitions. [2021-01-06 16:50:27,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-01-06 16:50:27,082 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:50:27,082 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:50:27,082 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-01-06 16:50:27,083 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:50:27,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:50:27,083 INFO L82 PathProgramCache]: Analyzing trace with hash 673404737, now seen corresponding path program 1 times [2021-01-06 16:50:27,084 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:50:27,089 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62979487] [2021-01-06 16:50:27,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:50:27,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:50:27,184 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:50:27,188 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62979487] [2021-01-06 16:50:27,188 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1286778802] [2021-01-06 16:50:27,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/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 [2021-01-06 16:50:27,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:50:27,282 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 9 conjunts are in the unsatisfiable core [2021-01-06 16:50:27,288 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 16:50:27,383 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 16:50:27,398 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:50:27,399 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 16:50:27,399 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2021-01-06 16:50:27,399 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279658186] [2021-01-06 16:50:27,400 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-06 16:50:27,400 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:50:27,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-06 16:50:27,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-01-06 16:50:27,401 INFO L87 Difference]: Start difference. First operand 56 states and 59 transitions. Second operand 7 states. [2021-01-06 16:50:27,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:50:27,485 INFO L93 Difference]: Finished difference Result 56 states and 59 transitions. [2021-01-06 16:50:27,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-06 16:50:27,487 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 27 [2021-01-06 16:50:27,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:50:27,488 INFO L225 Difference]: With dead ends: 56 [2021-01-06 16:50:27,488 INFO L226 Difference]: Without dead ends: 54 [2021-01-06 16:50:27,492 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-01-06 16:50:27,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2021-01-06 16:50:27,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2021-01-06 16:50:27,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2021-01-06 16:50:27,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 57 transitions. [2021-01-06 16:50:27,505 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 57 transitions. Word has length 27 [2021-01-06 16:50:27,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:50:27,505 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 57 transitions. [2021-01-06 16:50:27,506 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-06 16:50:27,506 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 57 transitions. [2021-01-06 16:50:27,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-01-06 16:50:27,506 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:50:27,507 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:50:27,720 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-01-06 16:50:27,721 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:50:27,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:50:27,723 INFO L82 PathProgramCache]: Analyzing trace with hash -1386043339, now seen corresponding path program 1 times [2021-01-06 16:50:27,723 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:50:27,724 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873897676] [2021-01-06 16:50:27,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:50:27,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:50:27,901 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:50:27,902 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873897676] [2021-01-06 16:50:27,902 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [639805094] [2021-01-06 16:50:27,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/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 [2021-01-06 16:50:27,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:50:27,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 19 conjunts are in the unsatisfiable core [2021-01-06 16:50:27,959 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 16:50:28,099 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 16:50:28,103 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 16:50:28,134 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:50:28,134 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 16:50:28,135 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 13 [2021-01-06 16:50:28,135 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671164345] [2021-01-06 16:50:28,135 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-01-06 16:50:28,136 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:50:28,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-01-06 16:50:28,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-01-06 16:50:28,137 INFO L87 Difference]: Start difference. First operand 54 states and 57 transitions. Second operand 13 states. [2021-01-06 16:50:28,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:50:28,378 INFO L93 Difference]: Finished difference Result 84 states and 88 transitions. [2021-01-06 16:50:28,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-01-06 16:50:28,379 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 28 [2021-01-06 16:50:28,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:50:28,379 INFO L225 Difference]: With dead ends: 84 [2021-01-06 16:50:28,380 INFO L226 Difference]: Without dead ends: 70 [2021-01-06 16:50:28,380 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=124, Invalid=256, Unknown=0, NotChecked=0, Total=380 [2021-01-06 16:50:28,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2021-01-06 16:50:28,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 65. [2021-01-06 16:50:28,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2021-01-06 16:50:28,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 69 transitions. [2021-01-06 16:50:28,389 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 69 transitions. Word has length 28 [2021-01-06 16:50:28,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:50:28,389 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 69 transitions. [2021-01-06 16:50:28,390 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2021-01-06 16:50:28,390 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 69 transitions. [2021-01-06 16:50:28,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-01-06 16:50:28,391 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:50:28,391 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:50:28,612 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:50:28,613 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:50:28,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:50:28,614 INFO L82 PathProgramCache]: Analyzing trace with hash -1397952348, now seen corresponding path program 1 times [2021-01-06 16:50:28,614 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:50:28,615 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549154636] [2021-01-06 16:50:28,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:50:28,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:50:28,688 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:50:28,689 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549154636] [2021-01-06 16:50:28,689 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [95058925] [2021-01-06 16:50:28,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/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 [2021-01-06 16:50:28,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:50:28,744 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 8 conjunts are in the unsatisfiable core [2021-01-06 16:50:28,748 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 16:50:28,865 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 16:50:28,868 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 16:50:28,876 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 16:50:28,896 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:50:28,896 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 16:50:28,896 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2021-01-06 16:50:28,897 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989981402] [2021-01-06 16:50:28,897 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-01-06 16:50:28,897 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:50:28,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-01-06 16:50:28,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2021-01-06 16:50:28,898 INFO L87 Difference]: Start difference. First operand 65 states and 69 transitions. Second operand 12 states. [2021-01-06 16:50:29,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:50:29,142 INFO L93 Difference]: Finished difference Result 75 states and 77 transitions. [2021-01-06 16:50:29,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-01-06 16:50:29,143 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 29 [2021-01-06 16:50:29,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:50:29,144 INFO L225 Difference]: With dead ends: 75 [2021-01-06 16:50:29,144 INFO L226 Difference]: Without dead ends: 73 [2021-01-06 16:50:29,145 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=151, Invalid=311, Unknown=0, NotChecked=0, Total=462 [2021-01-06 16:50:29,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2021-01-06 16:50:29,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 65. [2021-01-06 16:50:29,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2021-01-06 16:50:29,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 68 transitions. [2021-01-06 16:50:29,153 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 68 transitions. Word has length 29 [2021-01-06 16:50:29,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:50:29,153 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 68 transitions. [2021-01-06 16:50:29,153 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2021-01-06 16:50:29,154 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 68 transitions. [2021-01-06 16:50:29,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-01-06 16:50:29,155 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:50:29,155 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:50:29,368 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:50:29,369 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:50:29,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:50:29,370 INFO L82 PathProgramCache]: Analyzing trace with hash -749675952, now seen corresponding path program 2 times [2021-01-06 16:50:29,371 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:50:29,372 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010737087] [2021-01-06 16:50:29,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:50:29,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:50:29,575 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:50:29,576 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010737087] [2021-01-06 16:50:29,576 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [230304744] [2021-01-06 16:50:29,576 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:50:29,634 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 16:50:29,634 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 16:50:29,637 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 23 conjunts are in the unsatisfiable core [2021-01-06 16:50:29,641 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 16:50:29,795 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:50:29,795 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 16:50:29,795 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 17 [2021-01-06 16:50:29,796 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325189914] [2021-01-06 16:50:29,796 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-01-06 16:50:29,796 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:50:29,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-01-06 16:50:29,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2021-01-06 16:50:29,797 INFO L87 Difference]: Start difference. First operand 65 states and 68 transitions. Second operand 17 states. [2021-01-06 16:50:30,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:50:30,078 INFO L93 Difference]: Finished difference Result 65 states and 68 transitions. [2021-01-06 16:50:30,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-01-06 16:50:30,078 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 39 [2021-01-06 16:50:30,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:50:30,080 INFO L225 Difference]: With dead ends: 65 [2021-01-06 16:50:30,080 INFO L226 Difference]: Without dead ends: 47 [2021-01-06 16:50:30,081 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=150, Invalid=402, Unknown=0, NotChecked=0, Total=552 [2021-01-06 16:50:30,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-01-06 16:50:30,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 41. [2021-01-06 16:50:30,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2021-01-06 16:50:30,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 41 transitions. [2021-01-06 16:50:30,094 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 41 transitions. Word has length 39 [2021-01-06 16:50:30,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:50:30,096 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 41 transitions. [2021-01-06 16:50:30,096 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2021-01-06 16:50:30,096 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 41 transitions. [2021-01-06 16:50:30,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-01-06 16:50:30,099 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:50:30,100 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:50:30,315 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:50:30,316 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:50:30,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:50:30,318 INFO L82 PathProgramCache]: Analyzing trace with hash 1149567465, now seen corresponding path program 2 times [2021-01-06 16:50:30,318 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:50:30,319 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337901085] [2021-01-06 16:50:30,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:50:30,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:50:30,517 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:50:30,517 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337901085] [2021-01-06 16:50:30,518 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [124892883] [2021-01-06 16:50:30,518 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:50:30,579 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 16:50:30,579 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 16:50:30,580 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 26 conjunts are in the unsatisfiable core [2021-01-06 16:50:30,583 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 16:50:30,757 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 16:50:30,760 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 16:50:30,844 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 16:50:30,847 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 16:50:30,869 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:50:30,869 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 16:50:30,869 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13] total 22 [2021-01-06 16:50:30,872 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537641270] [2021-01-06 16:50:30,873 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-01-06 16:50:30,873 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:50:30,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-01-06 16:50:30,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=386, Unknown=0, NotChecked=0, Total=462 [2021-01-06 16:50:30,874 INFO L87 Difference]: Start difference. First operand 41 states and 41 transitions. Second operand 22 states. [2021-01-06 16:50:31,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:50:31,521 INFO L93 Difference]: Finished difference Result 62 states and 62 transitions. [2021-01-06 16:50:31,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-01-06 16:50:31,522 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 40 [2021-01-06 16:50:31,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:50:31,523 INFO L225 Difference]: With dead ends: 62 [2021-01-06 16:50:31,523 INFO L226 Difference]: Without dead ends: 60 [2021-01-06 16:50:31,524 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 248 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=254, Invalid=868, Unknown=0, NotChecked=0, Total=1122 [2021-01-06 16:50:31,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-01-06 16:50:31,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 52. [2021-01-06 16:50:31,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2021-01-06 16:50:31,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 52 transitions. [2021-01-06 16:50:31,532 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 52 transitions. Word has length 40 [2021-01-06 16:50:31,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:50:31,532 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 52 transitions. [2021-01-06 16:50:31,533 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2021-01-06 16:50:31,533 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 52 transitions. [2021-01-06 16:50:31,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-01-06 16:50:31,534 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:50:31,534 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:50:31,747 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-01-06 16:50:31,748 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:50:31,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:50:31,748 INFO L82 PathProgramCache]: Analyzing trace with hash -1266031740, now seen corresponding path program 3 times [2021-01-06 16:50:31,749 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:50:31,749 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898168774] [2021-01-06 16:50:31,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:50:31,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:50:32,060 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:50:32,061 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898168774] [2021-01-06 16:50:32,061 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1847997717] [2021-01-06 16:50:32,061 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:50:32,119 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-01-06 16:50:32,119 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 16:50:32,121 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 23 conjunts are in the unsatisfiable core [2021-01-06 16:50:32,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 16:50:32,462 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2021-01-06 16:50:32,466 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 16:50:32,558 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 16:50:32,560 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 16:50:32,562 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 16:50:32,595 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:50:32,595 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 16:50:32,595 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 16] total 28 [2021-01-06 16:50:32,596 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124531852] [2021-01-06 16:50:32,596 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-01-06 16:50:32,596 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:50:32,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-01-06 16:50:32,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=653, Unknown=0, NotChecked=0, Total=756 [2021-01-06 16:50:32,597 INFO L87 Difference]: Start difference. First operand 52 states and 52 transitions. Second operand 28 states. [2021-01-06 16:50:34,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:50:34,430 INFO L93 Difference]: Finished difference Result 95 states and 97 transitions. [2021-01-06 16:50:34,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-01-06 16:50:34,435 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 51 [2021-01-06 16:50:34,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:50:34,436 INFO L225 Difference]: With dead ends: 95 [2021-01-06 16:50:34,436 INFO L226 Difference]: Without dead ends: 93 [2021-01-06 16:50:34,438 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 840 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=596, Invalid=2484, Unknown=0, NotChecked=0, Total=3080 [2021-01-06 16:50:34,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2021-01-06 16:50:34,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 85. [2021-01-06 16:50:34,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2021-01-06 16:50:34,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 85 transitions. [2021-01-06 16:50:34,449 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 85 transitions. Word has length 51 [2021-01-06 16:50:34,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:50:34,449 INFO L481 AbstractCegarLoop]: Abstraction has 85 states and 85 transitions. [2021-01-06 16:50:34,449 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2021-01-06 16:50:34,450 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 85 transitions. [2021-01-06 16:50:34,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-01-06 16:50:34,451 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:50:34,451 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:50:34,665 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:50:34,666 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:50:34,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:50:34,668 INFO L82 PathProgramCache]: Analyzing trace with hash -1950192599, now seen corresponding path program 4 times [2021-01-06 16:50:34,668 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:50:34,669 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847939938] [2021-01-06 16:50:34,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:50:34,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:50:35,411 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 227 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-01-06 16:50:35,411 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847939938] [2021-01-06 16:50:35,412 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1566303405] [2021-01-06 16:50:35,412 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:50:35,486 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-06 16:50:35,486 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 16:50:35,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 24 conjunts are in the unsatisfiable core [2021-01-06 16:50:35,492 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 16:50:36,049 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 16:50:36,052 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 16:50:36,176 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 16:50:36,189 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 16:50:36,192 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 16:50:36,255 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:50:36,255 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 16:50:36,255 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 20] total 40 [2021-01-06 16:50:36,256 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627040939] [2021-01-06 16:50:36,256 INFO L461 AbstractCegarLoop]: Interpolant automaton has 40 states [2021-01-06 16:50:36,257 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:50:36,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-01-06 16:50:36,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=205, Invalid=1355, Unknown=0, NotChecked=0, Total=1560 [2021-01-06 16:50:36,259 INFO L87 Difference]: Start difference. First operand 85 states and 85 transitions. Second operand 40 states. [2021-01-06 16:50:39,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:50:39,800 INFO L93 Difference]: Finished difference Result 104 states and 105 transitions. [2021-01-06 16:50:39,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-01-06 16:50:39,801 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 84 [2021-01-06 16:50:39,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:50:39,801 INFO L225 Difference]: With dead ends: 104 [2021-01-06 16:50:39,802 INFO L226 Difference]: Without dead ends: 0 [2021-01-06 16:50:39,806 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 67 SyntacticMatches, 1 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2346 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=1169, Invalid=7021, Unknown=0, NotChecked=0, Total=8190 [2021-01-06 16:50:39,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-01-06 16:50:39,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-01-06 16:50:39,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-01-06 16:50:39,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-01-06 16:50:39,807 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 84 [2021-01-06 16:50:39,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:50:39,807 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-01-06 16:50:39,807 INFO L482 AbstractCegarLoop]: Interpolant automaton has 40 states. [2021-01-06 16:50:39,808 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-01-06 16:50:39,808 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-01-06 16:50:40,021 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:50:40,025 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-01-06 16:50:40,514 WARN L197 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 30 [2021-01-06 16:50:40,720 WARN L197 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 31 [2021-01-06 16:50:40,863 WARN L197 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 30 [2021-01-06 16:50:40,983 INFO L185 CegarLoopUtils]: At program point L18-17(lines 17 22) the Hoare annotation is: (let ((.cse0 (<= 3 ULTIMATE.start_main_~inlen~0)) (.cse1 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse2 (<= 1 ULTIMATE.start_main_~in~0)) (.cse3 (<= 0 ULTIMATE.start_main_~buf~0))) (or (and (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (= ULTIMATE.start_main_~buf~0 0) (<= 2 ULTIMATE.start_main_~bufferlen~0)) (and .cse0 (<= 3 ULTIMATE.start_main_~bufferlen~0) .cse1 (<= ULTIMATE.start_main_~buf~0 1) .cse2 .cse3) (and .cse0 .cse1 (<= (+ ULTIMATE.start_main_~buf~0 2) ULTIMATE.start_main_~bufferlen~0) (= ULTIMATE.start_main_~bufferlen~0 (+ ULTIMATE.start_main_~buflim~0 2)) .cse2 .cse3))) [2021-01-06 16:50:40,983 INFO L189 CegarLoopUtils]: For program point L18-18(lines 18 20) no Hoare annotation was computed. [2021-01-06 16:50:40,983 INFO L185 CegarLoopUtils]: At program point L18-20(lines 17 22) the Hoare annotation is: (and (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (<= (+ ULTIMATE.start_main_~buf~0 1) ULTIMATE.start_main_~bufferlen~0) (<= 2 ULTIMATE.start_main_~bufferlen~0) (<= 0 ULTIMATE.start_main_~buf~0)) [2021-01-06 16:50:40,983 INFO L189 CegarLoopUtils]: For program point L18-21(lines 18 20) no Hoare annotation was computed. [2021-01-06 16:50:40,984 INFO L192 CegarLoopUtils]: At program point L18-23(lines 17 22) the Hoare annotation is: true [2021-01-06 16:50:40,984 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-01-06 16:50:40,984 INFO L189 CegarLoopUtils]: For program point L19(line 19) no Hoare annotation was computed. [2021-01-06 16:50:40,984 INFO L189 CegarLoopUtils]: For program point L19-1(line 19) no Hoare annotation was computed. [2021-01-06 16:50:40,984 INFO L189 CegarLoopUtils]: For program point L19-2(line 19) no Hoare annotation was computed. [2021-01-06 16:50:40,984 INFO L189 CegarLoopUtils]: For program point L19-3(line 19) no Hoare annotation was computed. [2021-01-06 16:50:40,984 INFO L189 CegarLoopUtils]: For program point L19-4(line 19) no Hoare annotation was computed. [2021-01-06 16:50:40,984 INFO L189 CegarLoopUtils]: For program point L19-5(line 19) no Hoare annotation was computed. [2021-01-06 16:50:40,984 INFO L189 CegarLoopUtils]: For program point L19-6(line 19) no Hoare annotation was computed. [2021-01-06 16:50:40,985 INFO L189 CegarLoopUtils]: For program point L44(lines 44 45) no Hoare annotation was computed. [2021-01-06 16:50:40,985 INFO L189 CegarLoopUtils]: For program point L19-7(line 19) no Hoare annotation was computed. [2021-01-06 16:50:40,985 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-01-06 16:50:40,985 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-01-06 16:50:40,985 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-01-06 16:50:40,985 INFO L189 CegarLoopUtils]: For program point L37-1(lines 37 48) no Hoare annotation was computed. [2021-01-06 16:50:40,985 INFO L189 CegarLoopUtils]: For program point L37-3(lines 37 48) no Hoare annotation was computed. [2021-01-06 16:50:40,985 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-01-06 16:50:40,986 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-01-06 16:50:40,986 INFO L192 CegarLoopUtils]: At program point L55(lines 25 56) the Hoare annotation is: true [2021-01-06 16:50:40,986 INFO L192 CegarLoopUtils]: At program point L55-1(lines 24 56) the Hoare annotation is: true [2021-01-06 16:50:40,986 INFO L189 CegarLoopUtils]: For program point L39(lines 39 40) no Hoare annotation was computed. [2021-01-06 16:50:40,986 INFO L189 CegarLoopUtils]: For program point L31(line 31) no Hoare annotation was computed. [2021-01-06 16:50:40,986 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-01-06 16:50:40,986 INFO L189 CegarLoopUtils]: For program point L31-1(lines 25 56) no Hoare annotation was computed. [2021-01-06 16:50:40,986 INFO L189 CegarLoopUtils]: For program point L32(lines 25 56) no Hoare annotation was computed. [2021-01-06 16:50:40,986 INFO L189 CegarLoopUtils]: For program point L-1(line -1) no Hoare annotation was computed. [2021-01-06 16:50:40,987 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-01-06 16:50:40,987 INFO L189 CegarLoopUtils]: For program point L33(line 33) no Hoare annotation was computed. [2021-01-06 16:50:40,987 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-01-06 16:50:40,987 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-01-06 16:50:40,987 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-01-06 16:50:40,987 INFO L189 CegarLoopUtils]: For program point L18(lines 18 20) no Hoare annotation was computed. [2021-01-06 16:50:40,987 INFO L185 CegarLoopUtils]: At program point L18-2(lines 17 22) the Hoare annotation is: (let ((.cse0 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse2 (< ULTIMATE.start_main_~buf~0 ULTIMATE.start_main_~buflim~0)) (.cse1 (+ ULTIMATE.start_main_~buflim~0 2))) (or (and (<= (+ ULTIMATE.start_main_~bufferlen~0 1) ULTIMATE.start_main_~inlen~0) .cse0 (= ULTIMATE.start_main_~bufferlen~0 .cse1) (<= (+ ULTIMATE.start_main_~buflim~0 ULTIMATE.start_main_~in~0 3) (+ ULTIMATE.start_main_~inlen~0 ULTIMATE.start_main_~buf~0)) (<= 1 ULTIMATE.start_main_~in~0) .cse2 (<= 0 ULTIMATE.start_main_~buf~0)) (and (<= .cse1 ULTIMATE.start_main_~bufferlen~0) (= ULTIMATE.start_main_~buf~0 0) .cse0 (< ULTIMATE.start_main_~bufferlen~0 ULTIMATE.start_main_~inlen~0) .cse2 (= ULTIMATE.start_main_~in~0 0) (<= ULTIMATE.start_main_~bufferlen~0 .cse1)))) [2021-01-06 16:50:40,988 INFO L189 CegarLoopUtils]: For program point L18-3(lines 18 20) no Hoare annotation was computed. [2021-01-06 16:50:40,988 INFO L185 CegarLoopUtils]: At program point L18-5(lines 17 22) the Hoare annotation is: (let ((.cse0 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse2 (< ULTIMATE.start_main_~buf~0 ULTIMATE.start_main_~buflim~0)) (.cse1 (+ ULTIMATE.start_main_~buflim~0 2))) (or (and (<= (+ ULTIMATE.start_main_~bufferlen~0 1) ULTIMATE.start_main_~inlen~0) .cse0 (<= (+ ULTIMATE.start_main_~buflim~0 ULTIMATE.start_main_~in~0 3) (+ ULTIMATE.start_main_~inlen~0 ULTIMATE.start_main_~buf~0)) (= ULTIMATE.start_main_~bufferlen~0 .cse1) (<= 1 ULTIMATE.start_main_~in~0) .cse2 (<= 0 ULTIMATE.start_main_~buf~0)) (and (<= .cse1 ULTIMATE.start_main_~bufferlen~0) (= ULTIMATE.start_main_~buf~0 0) .cse0 (< ULTIMATE.start_main_~bufferlen~0 ULTIMATE.start_main_~inlen~0) .cse2 (= ULTIMATE.start_main_~in~0 0) (<= ULTIMATE.start_main_~bufferlen~0 .cse1)))) [2021-01-06 16:50:40,988 INFO L189 CegarLoopUtils]: For program point L18-6(lines 18 20) no Hoare annotation was computed. [2021-01-06 16:50:40,988 INFO L185 CegarLoopUtils]: At program point L18-8(lines 17 22) the Hoare annotation is: (and (<= (+ ULTIMATE.start_main_~bufferlen~0 1) ULTIMATE.start_main_~inlen~0) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= (+ ULTIMATE.start_main_~buf~0 2) ULTIMATE.start_main_~bufferlen~0) (<= (+ ULTIMATE.start_main_~buflim~0 ULTIMATE.start_main_~in~0 3) (+ ULTIMATE.start_main_~inlen~0 ULTIMATE.start_main_~buf~0)) (= ULTIMATE.start_main_~bufferlen~0 (+ ULTIMATE.start_main_~buflim~0 2)) (<= 1 ULTIMATE.start_main_~in~0) (<= 0 ULTIMATE.start_main_~buf~0)) [2021-01-06 16:50:40,988 INFO L189 CegarLoopUtils]: For program point L18-9(lines 18 20) no Hoare annotation was computed. [2021-01-06 16:50:40,989 INFO L185 CegarLoopUtils]: At program point L18-11(lines 17 48) the Hoare annotation is: (let ((.cse0 (+ ULTIMATE.start_main_~buflim~0 2))) (or (and (<= .cse0 ULTIMATE.start_main_~bufferlen~0) (= ULTIMATE.start_main_~buf~0 0) (< ULTIMATE.start_main_~bufferlen~0 ULTIMATE.start_main_~inlen~0) (<= 0 ULTIMATE.start_main_~buflim~0) (= ULTIMATE.start_main_~in~0 0) (<= ULTIMATE.start_main_~bufferlen~0 .cse0)) (and (<= (+ ULTIMATE.start_main_~bufferlen~0 1) ULTIMATE.start_main_~inlen~0) (<= (+ ULTIMATE.start_main_~buf~0 2) ULTIMATE.start_main_~bufferlen~0) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~bufferlen~0 .cse0) (<= (+ ULTIMATE.start_main_~buflim~0 ULTIMATE.start_main_~in~0 3) (+ ULTIMATE.start_main_~inlen~0 ULTIMATE.start_main_~buf~0)) (<= 1 ULTIMATE.start_main_~in~0) (<= 0 ULTIMATE.start_main_~buf~0)))) [2021-01-06 16:50:40,989 INFO L189 CegarLoopUtils]: For program point L18-12(lines 18 20) no Hoare annotation was computed. [2021-01-06 16:50:40,989 INFO L185 CegarLoopUtils]: At program point L18-14(lines 17 22) the Hoare annotation is: (let ((.cse0 (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond))) (.cse1 (<= 1 ULTIMATE.start_main_~in~0)) (.cse2 (<= 0 ULTIMATE.start_main_~buf~0))) (or (and .cse0 (<= (+ ULTIMATE.start_main_~in~0 2) ULTIMATE.start_main_~inlen~0) (<= 3 ULTIMATE.start_main_~bufferlen~0) (<= ULTIMATE.start_main_~buf~0 1) .cse1 .cse2) (and .cse0 (= ULTIMATE.start_main_~buf~0 0) (<= 2 ULTIMATE.start_main_~bufferlen~0) (= ULTIMATE.start_main_~in~0 0)) (and (<= 3 ULTIMATE.start_main_~inlen~0) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= (+ ULTIMATE.start_main_~buf~0 2) ULTIMATE.start_main_~bufferlen~0) (= ULTIMATE.start_main_~bufferlen~0 (+ ULTIMATE.start_main_~buflim~0 2)) .cse1 .cse2))) [2021-01-06 16:50:40,989 INFO L189 CegarLoopUtils]: For program point L18-15(lines 18 20) no Hoare annotation was computed. [2021-01-06 16:50:41,014 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.01 04:50:41 BoogieIcfgContainer [2021-01-06 16:50:41,014 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-01-06 16:50:41,015 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-01-06 16:50:41,015 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-01-06 16:50:41,015 INFO L275 PluginConnector]: Witness Printer initialized [2021-01-06 16:50:41,015 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 04:50:25" (3/4) ... [2021-01-06 16:50:41,019 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-01-06 16:50:41,031 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2021-01-06 16:50:41,031 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-01-06 16:50:41,031 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-01-06 16:50:41,032 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-01-06 16:50:41,100 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/loop-invgen/sendmail-close-angle.i-witness.graphml [2021-01-06 16:50:41,100 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-01-06 16:50:41,103 INFO L168 Benchmark]: Toolchain (without parser) took 16679.96 ms. Allocated memory was 151.0 MB in the beginning and 305.1 MB in the end (delta: 154.1 MB). Free memory was 126.3 MB in the beginning and 163.0 MB in the end (delta: -36.7 MB). Peak memory consumption was 118.6 MB. Max. memory is 8.0 GB. [2021-01-06 16:50:41,104 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 151.0 MB. Free memory was 121.8 MB in the beginning and 121.7 MB in the end (delta: 94.5 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-01-06 16:50:41,104 INFO L168 Benchmark]: CACSL2BoogieTranslator took 251.02 ms. Allocated memory is still 151.0 MB. Free memory was 125.9 MB in the beginning and 116.0 MB in the end (delta: 9.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-01-06 16:50:41,105 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.02 ms. Allocated memory is still 151.0 MB. Free memory was 115.9 MB in the beginning and 114.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-01-06 16:50:41,107 INFO L168 Benchmark]: Boogie Preprocessor took 25.31 ms. Allocated memory is still 151.0 MB. Free memory was 114.4 MB in the beginning and 113.2 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-01-06 16:50:41,108 INFO L168 Benchmark]: RCFGBuilder took 468.27 ms. Allocated memory is still 151.0 MB. Free memory was 113.1 MB in the beginning and 132.4 MB in the end (delta: -19.3 MB). Peak memory consumption was 19.2 MB. Max. memory is 8.0 GB. [2021-01-06 16:50:41,108 INFO L168 Benchmark]: TraceAbstraction took 15796.43 ms. Allocated memory was 151.0 MB in the beginning and 305.1 MB in the end (delta: 154.1 MB). Free memory was 131.9 MB in the beginning and 166.7 MB in the end (delta: -34.8 MB). Peak memory consumption was 177.5 MB. Max. memory is 8.0 GB. [2021-01-06 16:50:41,112 INFO L168 Benchmark]: Witness Printer took 87.34 ms. Allocated memory is still 305.1 MB. Free memory was 166.7 MB in the beginning and 163.0 MB in the end (delta: 3.7 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2021-01-06 16:50:41,117 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 151.0 MB. Free memory was 121.8 MB in the beginning and 121.7 MB in the end (delta: 94.5 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 251.02 ms. Allocated memory is still 151.0 MB. Free memory was 125.9 MB in the beginning and 116.0 MB in the end (delta: 9.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 38.02 ms. Allocated memory is still 151.0 MB. Free memory was 115.9 MB in the beginning and 114.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 25.31 ms. Allocated memory is still 151.0 MB. Free memory was 114.4 MB in the beginning and 113.2 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 468.27 ms. Allocated memory is still 151.0 MB. Free memory was 113.1 MB in the beginning and 132.4 MB in the end (delta: -19.3 MB). Peak memory consumption was 19.2 MB. Max. memory is 8.0 GB. * TraceAbstraction took 15796.43 ms. Allocated memory was 151.0 MB in the beginning and 305.1 MB in the end (delta: 154.1 MB). Free memory was 131.9 MB in the beginning and 166.7 MB in the end (delta: -34.8 MB). Peak memory consumption was 177.5 MB. Max. memory is 8.0 GB. * Witness Printer took 87.34 ms. Allocated memory is still 305.1 MB. Free memory was 166.7 MB in the beginning and 163.0 MB in the end (delta: 3.7 MB). Peak memory consumption was 3.1 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 - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: (((((bufferlen + 1 <= inlen && 1 == cond) && buf + 2 <= bufferlen) && buflim + in + 3 <= inlen + buf) && bufferlen == buflim + 2) && 1 <= in) && 0 <= buf - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: ((((((bufferlen + 1 <= inlen && 1 == cond) && bufferlen == buflim + 2) && buflim + in + 3 <= inlen + buf) && 1 <= in) && buf < buflim) && 0 <= buf) || ((((((buflim + 2 <= bufferlen && buf == 0) && 1 == cond) && bufferlen < inlen) && buf < buflim) && in == 0) && bufferlen <= buflim + 2) - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: (((!(0 == cond) && buf == 0) && 2 <= bufferlen) || (((((3 <= inlen && 3 <= bufferlen) && 1 == cond) && buf <= 1) && 1 <= in) && 0 <= buf)) || (((((3 <= inlen && 1 == cond) && buf + 2 <= bufferlen) && bufferlen == buflim + 2) && 1 <= in) && 0 <= buf) - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: (((((buflim + 2 <= bufferlen && buf == 0) && bufferlen < inlen) && 0 <= buflim) && in == 0) && bufferlen <= buflim + 2) || ((((((bufferlen + 1 <= inlen && buf + 2 <= bufferlen) && 1 <= cond) && bufferlen == buflim + 2) && buflim + in + 3 <= inlen + buf) && 1 <= in) && 0 <= buf) - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: ((((((bufferlen + 1 <= inlen && 1 == cond) && buflim + in + 3 <= inlen + buf) && bufferlen == buflim + 2) && 1 <= in) && buf < buflim) && 0 <= buf) || ((((((buflim + 2 <= bufferlen && buf == 0) && 1 == cond) && bufferlen < inlen) && buf < buflim) && in == 0) && bufferlen <= buflim + 2) - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: ((!(0 == cond) && buf + 1 <= bufferlen) && 2 <= bufferlen) && 0 <= buf - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: ((((((!(0 == cond) && in + 2 <= inlen) && 3 <= bufferlen) && buf <= 1) && 1 <= in) && 0 <= buf) || (((!(0 == cond) && buf == 0) && 2 <= bufferlen) && in == 0)) || (((((3 <= inlen && 1 == cond) && buf + 2 <= bufferlen) && bufferlen == buflim + 2) && 1 <= in) && 0 <= buf) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 46 locations, 8 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 14.7s, OverallIterations: 13, TraceHistogramMax: 7, AutomataDifference: 7.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.9s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 370 SDtfs, 1424 SDslu, 1479 SDs, 0 SdLazy, 2309 SolverSat, 857 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 531 GetRequests, 251 SyntacticMatches, 6 SemanticMatches, 274 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3709 ImplicationChecksByTransitivity, 7.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=85occurred in iteration=12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 13 MinimizatonAttempts, 59 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 10 LocationsWithAnnotation, 10 PreInvPairs, 58 NumberOfFragments, 339 HoareAnnotationTreeSize, 10 FomulaSimplifications, 21983 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 10 FomulaSimplificationsInter, 1328 FormulaSimplificationTreeSizeReductionInter, 0.7s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 4.0s InterpolantComputationTime, 681 NumberOfCodeBlocks, 672 NumberOfCodeBlocksAsserted, 25 NumberOfCheckSat, 661 ConstructedInterpolants, 0 QuantifiedInterpolants, 273260 SizeOfPredicates, 46 NumberOfNonLiveVariables, 898 ConjunctsInSsa, 132 ConjunctsInUnsatCore, 20 InterpolantComputations, 6 PerfectInterpolantSequences, 12/734 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 RESULT: Ultimate proved your program to be correct! Received shutdown request...