/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/nla-digbench-scaling/sqrt1-ll_valuebound1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-06 18:09:38,499 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-06 18:09:38,502 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-06 18:09:38,540 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-06 18:09:38,541 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-06 18:09:38,542 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-06 18:09:38,544 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-06 18:09:38,552 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-06 18:09:38,555 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-06 18:09:38,556 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-06 18:09:38,557 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-06 18:09:38,558 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-06 18:09:38,559 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-06 18:09:38,560 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-06 18:09:38,562 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-06 18:09:38,563 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-06 18:09:38,564 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-06 18:09:38,565 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-06 18:09:38,568 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-06 18:09:38,570 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-06 18:09:38,572 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-06 18:09:38,573 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-06 18:09:38,575 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-06 18:09:38,576 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-06 18:09:38,579 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-06 18:09:38,583 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-06 18:09:38,584 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-06 18:09:38,585 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-06 18:09:38,586 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-06 18:09:38,587 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-06 18:09:38,587 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-06 18:09:38,588 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-06 18:09:38,589 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-06 18:09:38,589 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-06 18:09:38,590 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-06 18:09:38,591 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-06 18:09:38,594 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 18:09:38,621 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-06 18:09:38,621 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-06 18:09:38,623 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-06 18:09:38,623 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-06 18:09:38,623 INFO L138 SettingsManager]: * Use SBE=true [2021-01-06 18:09:38,623 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-06 18:09:38,624 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-06 18:09:38,624 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-06 18:09:38,624 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-06 18:09:38,624 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-06 18:09:38,625 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-06 18:09:38,625 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-06 18:09:38,625 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-06 18:09:38,626 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-06 18:09:38,626 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-06 18:09:38,626 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-06 18:09:38,626 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-06 18:09:38,627 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 18:09:38,627 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-06 18:09:38,627 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-06 18:09:38,627 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-06 18:09:38,628 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-06 18:09:38,628 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-06 18:09:38,628 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-06 18:09:38,628 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-06 18:09:38,629 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-06 18:09:39,027 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-06 18:09:39,055 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-06 18:09:39,058 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-06 18:09:39,059 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-06 18:09:39,060 INFO L275 PluginConnector]: CDTParser initialized [2021-01-06 18:09:39,061 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_valuebound1.c [2021-01-06 18:09:39,131 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/ef0b1f6a3/eef708e2294a451b99a4a7af799332ce/FLAG6c4b77e87 [2021-01-06 18:09:39,679 INFO L306 CDTParser]: Found 1 translation units. [2021-01-06 18:09:39,680 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_valuebound1.c [2021-01-06 18:09:39,690 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/ef0b1f6a3/eef708e2294a451b99a4a7af799332ce/FLAG6c4b77e87 [2021-01-06 18:09:40,050 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/ef0b1f6a3/eef708e2294a451b99a4a7af799332ce [2021-01-06 18:09:40,055 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-06 18:09:40,057 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-06 18:09:40,059 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-06 18:09:40,059 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-06 18:09:40,063 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-06 18:09:40,063 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 06:09:40" (1/1) ... [2021-01-06 18:09:40,065 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6af93b22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 06:09:40, skipping insertion in model container [2021-01-06 18:09:40,065 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 06:09:40" (1/1) ... [2021-01-06 18:09:40,073 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-06 18:09:40,088 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-01-06 18:09:40,239 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/nla-digbench-scaling/sqrt1-ll_valuebound1.c[520,533] left hand side expression in assignment: lhs: VariableLHS[~n~0,] left hand side expression in assignment: lhs: VariableLHS[~a~0,] left hand side expression in assignment: lhs: VariableLHS[~s~0,] left hand side expression in assignment: lhs: VariableLHS[~t~0,] left hand side expression in assignment: lhs: VariableLHS[~a~0,] left hand side expression in assignment: lhs: VariableLHS[~t~0,] left hand side expression in assignment: lhs: VariableLHS[~s~0,] [2021-01-06 18:09:40,257 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 18:09:40,266 INFO L203 MainTranslator]: Completed pre-run [2021-01-06 18:09:40,281 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/nla-digbench-scaling/sqrt1-ll_valuebound1.c[520,533] left hand side expression in assignment: lhs: VariableLHS[~n~0,] left hand side expression in assignment: lhs: VariableLHS[~a~0,] left hand side expression in assignment: lhs: VariableLHS[~s~0,] left hand side expression in assignment: lhs: VariableLHS[~t~0,] left hand side expression in assignment: lhs: VariableLHS[~a~0,] left hand side expression in assignment: lhs: VariableLHS[~t~0,] left hand side expression in assignment: lhs: VariableLHS[~s~0,] [2021-01-06 18:09:40,289 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 18:09:40,305 INFO L208 MainTranslator]: Completed translation [2021-01-06 18:09:40,306 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 06:09:40 WrapperNode [2021-01-06 18:09:40,306 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-06 18:09:40,307 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-06 18:09:40,307 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-06 18:09:40,308 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-06 18:09:40,316 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 06:09:40" (1/1) ... [2021-01-06 18:09:40,324 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 06:09:40" (1/1) ... [2021-01-06 18:09:40,346 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-06 18:09:40,347 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-06 18:09:40,347 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-06 18:09:40,347 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-06 18:09:40,357 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 06:09:40" (1/1) ... [2021-01-06 18:09:40,357 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 06:09:40" (1/1) ... [2021-01-06 18:09:40,359 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 06:09:40" (1/1) ... [2021-01-06 18:09:40,359 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 06:09:40" (1/1) ... [2021-01-06 18:09:40,363 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 06:09:40" (1/1) ... [2021-01-06 18:09:40,368 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 06:09:40" (1/1) ... [2021-01-06 18:09:40,369 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 06:09:40" (1/1) ... [2021-01-06 18:09:40,371 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-06 18:09:40,372 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-06 18:09:40,375 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-06 18:09:40,375 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-06 18:09:40,378 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 06:09:40" (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 18:09:40,492 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-06 18:09:40,492 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-06 18:09:40,493 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-06 18:09:40,493 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-06 18:09:40,923 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-06 18:09:40,923 INFO L299 CfgBuilder]: Removed 19 assume(true) statements. [2021-01-06 18:09:40,928 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 06:09:40 BoogieIcfgContainer [2021-01-06 18:09:40,928 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-06 18:09:40,930 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-06 18:09:40,930 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-06 18:09:40,957 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-06 18:09:40,958 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.01 06:09:40" (1/3) ... [2021-01-06 18:09:40,964 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e3386fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 06:09:40, skipping insertion in model container [2021-01-06 18:09:40,964 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 06:09:40" (2/3) ... [2021-01-06 18:09:40,965 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e3386fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 06:09:40, skipping insertion in model container [2021-01-06 18:09:40,965 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 06:09:40" (3/3) ... [2021-01-06 18:09:40,967 INFO L111 eAbstractionObserver]: Analyzing ICFG sqrt1-ll_valuebound1.c [2021-01-06 18:09:40,977 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-06 18:09:40,987 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2021-01-06 18:09:41,014 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-01-06 18:09:41,043 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-06 18:09:41,044 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-06 18:09:41,044 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-06 18:09:41,044 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-06 18:09:41,044 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-06 18:09:41,044 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-06 18:09:41,045 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-06 18:09:41,045 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-06 18:09:41,060 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2021-01-06 18:09:41,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-01-06 18:09:41,066 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 18:09:41,067 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-01-06 18:09:41,067 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 18:09:41,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 18:09:41,074 INFO L82 PathProgramCache]: Analyzing trace with hash 1804972333, now seen corresponding path program 1 times [2021-01-06 18:09:41,083 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 18:09:41,084 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917652661] [2021-01-06 18:09:41,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 18:09:41,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 18:09:41,235 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 18:09:41,235 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917652661] [2021-01-06 18:09:41,236 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 18:09:41,236 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-06 18:09:41,237 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834798147] [2021-01-06 18:09:41,242 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-01-06 18:09:41,242 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 18:09:41,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-01-06 18:09:41,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-01-06 18:09:41,259 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 2 states. [2021-01-06 18:09:41,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 18:09:41,280 INFO L93 Difference]: Finished difference Result 63 states and 80 transitions. [2021-01-06 18:09:41,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-01-06 18:09:41,281 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 7 [2021-01-06 18:09:41,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 18:09:41,290 INFO L225 Difference]: With dead ends: 63 [2021-01-06 18:09:41,291 INFO L226 Difference]: Without dead ends: 29 [2021-01-06 18:09:41,294 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 18:09:41,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-01-06 18:09:41,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2021-01-06 18:09:41,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2021-01-06 18:09:41,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2021-01-06 18:09:41,332 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 7 [2021-01-06 18:09:41,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 18:09:41,333 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2021-01-06 18:09:41,333 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-01-06 18:09:41,333 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2021-01-06 18:09:41,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-01-06 18:09:41,334 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 18:09:41,334 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-01-06 18:09:41,334 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-06 18:09:41,334 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 18:09:41,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 18:09:41,335 INFO L82 PathProgramCache]: Analyzing trace with hash 1806819375, now seen corresponding path program 1 times [2021-01-06 18:09:41,336 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 18:09:41,336 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225702653] [2021-01-06 18:09:41,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 18:09:41,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 18:09:41,480 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 18:09:41,480 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225702653] [2021-01-06 18:09:41,481 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 18:09:41,481 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 18:09:41,481 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931444855] [2021-01-06 18:09:41,482 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 18:09:41,483 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 18:09:41,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 18:09:41,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 18:09:41,484 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand 4 states. [2021-01-06 18:09:41,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 18:09:41,595 INFO L93 Difference]: Finished difference Result 54 states and 54 transitions. [2021-01-06 18:09:41,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 18:09:41,596 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2021-01-06 18:09:41,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 18:09:41,597 INFO L225 Difference]: With dead ends: 54 [2021-01-06 18:09:41,597 INFO L226 Difference]: Without dead ends: 50 [2021-01-06 18:09:41,598 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 18:09:41,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-01-06 18:09:41,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 38. [2021-01-06 18:09:41,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2021-01-06 18:09:41,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 41 transitions. [2021-01-06 18:09:41,608 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 41 transitions. Word has length 7 [2021-01-06 18:09:41,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 18:09:41,609 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 41 transitions. [2021-01-06 18:09:41,609 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 18:09:41,609 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 41 transitions. [2021-01-06 18:09:41,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-01-06 18:09:41,610 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 18:09:41,610 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 18:09:41,610 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-01-06 18:09:41,610 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 18:09:41,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 18:09:41,611 INFO L82 PathProgramCache]: Analyzing trace with hash 1186787538, now seen corresponding path program 1 times [2021-01-06 18:09:41,611 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 18:09:41,612 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545740903] [2021-01-06 18:09:41,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 18:09:41,628 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 18:09:41,628 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [799559879] [2021-01-06 18:09:41,629 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 18:09:41,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 18:09:41,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 17 conjunts are in the unsatisfiable core [2021-01-06 18:09:41,690 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 18:09:41,771 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 18:09:41,772 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545740903] [2021-01-06 18:09:41,772 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 18:09:41,772 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [799559879] [2021-01-06 18:09:41,772 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 18:09:41,773 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-06 18:09:41,773 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685074752] [2021-01-06 18:09:41,773 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 18:09:41,774 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 18:09:41,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 18:09:41,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-01-06 18:09:41,775 INFO L87 Difference]: Start difference. First operand 38 states and 41 transitions. Second operand 6 states. [2021-01-06 18:09:41,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 18:09:41,928 INFO L93 Difference]: Finished difference Result 51 states and 51 transitions. [2021-01-06 18:09:41,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 18:09:41,930 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 9 [2021-01-06 18:09:41,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 18:09:41,931 INFO L225 Difference]: With dead ends: 51 [2021-01-06 18:09:41,932 INFO L226 Difference]: Without dead ends: 37 [2021-01-06 18:09:41,935 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-01-06 18:09:41,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-01-06 18:09:41,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 36. [2021-01-06 18:09:41,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2021-01-06 18:09:41,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 36 transitions. [2021-01-06 18:09:41,953 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 36 transitions. Word has length 9 [2021-01-06 18:09:41,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 18:09:41,953 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 36 transitions. [2021-01-06 18:09:41,953 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 18:09:41,953 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 36 transitions. [2021-01-06 18:09:41,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-01-06 18:09:41,954 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 18:09:41,954 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 18:09:42,172 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-01-06 18:09:42,173 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 18:09:42,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 18:09:42,175 INFO L82 PathProgramCache]: Analyzing trace with hash -1783845574, now seen corresponding path program 1 times [2021-01-06 18:09:42,176 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 18:09:42,176 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669956985] [2021-01-06 18:09:42,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 18:09:42,190 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 18:09:42,191 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [257805883] [2021-01-06 18:09:42,191 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 18:09:42,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 18:09:42,249 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 11 conjunts are in the unsatisfiable core [2021-01-06 18:09:42,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 18:09:42,321 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 18:09:42,321 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669956985] [2021-01-06 18:09:42,321 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 18:09:42,322 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [257805883] [2021-01-06 18:09:42,322 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 18:09:42,322 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-01-06 18:09:42,322 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665243524] [2021-01-06 18:09:42,323 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 18:09:42,323 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 18:09:42,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 18:09:42,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-01-06 18:09:42,324 INFO L87 Difference]: Start difference. First operand 36 states and 36 transitions. Second operand 5 states. [2021-01-06 18:09:42,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 18:09:42,411 INFO L93 Difference]: Finished difference Result 61 states and 61 transitions. [2021-01-06 18:09:42,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 18:09:42,412 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2021-01-06 18:09:42,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 18:09:42,413 INFO L225 Difference]: With dead ends: 61 [2021-01-06 18:09:42,413 INFO L226 Difference]: Without dead ends: 57 [2021-01-06 18:09:42,414 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-01-06 18:09:42,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-01-06 18:09:42,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 45. [2021-01-06 18:09:42,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2021-01-06 18:09:42,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 48 transitions. [2021-01-06 18:09:42,423 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 48 transitions. Word has length 14 [2021-01-06 18:09:42,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 18:09:42,424 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 48 transitions. [2021-01-06 18:09:42,424 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 18:09:42,424 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 48 transitions. [2021-01-06 18:09:42,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-01-06 18:09:42,425 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 18:09:42,425 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 18:09:42,639 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 18:09:42,640 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 18:09:42,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 18:09:42,642 INFO L82 PathProgramCache]: Analyzing trace with hash -583489763, now seen corresponding path program 1 times [2021-01-06 18:09:42,642 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 18:09:42,643 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640322101] [2021-01-06 18:09:42,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 18:09:42,656 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 18:09:42,657 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1502515563] [2021-01-06 18:09:42,657 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 18:09:42,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 18:09:42,712 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 23 conjunts are in the unsatisfiable core [2021-01-06 18:09:42,714 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 18:09:42,832 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 18:09:42,832 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640322101] [2021-01-06 18:09:42,832 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 18:09:42,833 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1502515563] [2021-01-06 18:09:42,833 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 18:09:42,833 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-01-06 18:09:42,834 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455640346] [2021-01-06 18:09:42,834 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-06 18:09:42,834 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 18:09:42,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-06 18:09:42,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-01-06 18:09:42,836 INFO L87 Difference]: Start difference. First operand 45 states and 48 transitions. Second operand 7 states. [2021-01-06 18:09:42,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 18:09:42,979 INFO L93 Difference]: Finished difference Result 58 states and 58 transitions. [2021-01-06 18:09:42,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 18:09:42,980 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2021-01-06 18:09:42,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 18:09:42,982 INFO L225 Difference]: With dead ends: 58 [2021-01-06 18:09:42,982 INFO L226 Difference]: Without dead ends: 44 [2021-01-06 18:09:42,984 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-01-06 18:09:42,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2021-01-06 18:09:43,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2021-01-06 18:09:43,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2021-01-06 18:09:43,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 43 transitions. [2021-01-06 18:09:43,003 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 43 transitions. Word has length 16 [2021-01-06 18:09:43,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 18:09:43,004 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 43 transitions. [2021-01-06 18:09:43,004 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-06 18:09:43,005 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 43 transitions. [2021-01-06 18:09:43,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-01-06 18:09:43,005 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 18:09:43,005 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2021-01-06 18:09:43,218 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 18:09:43,219 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 18:09:43,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 18:09:43,220 INFO L82 PathProgramCache]: Analyzing trace with hash -435278385, now seen corresponding path program 2 times [2021-01-06 18:09:43,221 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 18:09:43,222 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768493967] [2021-01-06 18:09:43,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 18:09:43,234 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 18:09:43,234 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1821651328] [2021-01-06 18:09:43,235 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 18:09:43,286 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 18:09:43,286 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 18:09:43,287 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 10 conjunts are in the unsatisfiable core [2021-01-06 18:09:43,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 18:09:43,454 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 18:09:43,454 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768493967] [2021-01-06 18:09:43,454 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 18:09:43,455 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1821651328] [2021-01-06 18:09:43,455 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 18:09:43,455 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-01-06 18:09:43,455 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850679800] [2021-01-06 18:09:43,456 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 18:09:43,456 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 18:09:43,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 18:09:43,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-01-06 18:09:43,457 INFO L87 Difference]: Start difference. First operand 43 states and 43 transitions. Second operand 6 states. [2021-01-06 18:09:43,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 18:09:43,597 INFO L93 Difference]: Finished difference Result 43 states and 43 transitions. [2021-01-06 18:09:43,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 18:09:43,599 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 21 [2021-01-06 18:09:43,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 18:09:43,600 INFO L225 Difference]: With dead ends: 43 [2021-01-06 18:09:43,600 INFO L226 Difference]: Without dead ends: 0 [2021-01-06 18:09:43,601 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-01-06 18:09:43,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-01-06 18:09:43,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-01-06 18:09:43,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-01-06 18:09:43,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-01-06 18:09:43,602 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2021-01-06 18:09:43,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 18:09:43,605 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-01-06 18:09:43,605 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 18:09:43,605 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-01-06 18:09:43,605 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-01-06 18:09:43,818 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 18:09:43,822 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-01-06 18:09:44,170 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 23 [2021-01-06 18:09:44,370 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-01-06 18:09:44,371 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-01-06 18:09:44,371 INFO L192 CegarLoopUtils]: At program point L48(lines 20 49) the Hoare annotation is: true [2021-01-06 18:09:44,371 INFO L189 CegarLoopUtils]: For program point L-1(line -1) no Hoare annotation was computed. [2021-01-06 18:09:44,371 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-01-06 18:09:44,371 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-01-06 18:09:44,371 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-01-06 18:09:44,371 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-01-06 18:09:44,372 INFO L189 CegarLoopUtils]: For program point L12(lines 12 15) no Hoare annotation was computed. [2021-01-06 18:09:44,372 INFO L185 CegarLoopUtils]: At program point L12-2(lines 11 17) the Hoare annotation is: (let ((.cse0 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse1 (<= 0 ULTIMATE.start_main_~n~0)) (.cse2 (<= ULTIMATE.start_main_~n~0 1)) (.cse3 (= ULTIMATE.start_assume_abort_if_not_~cond 1))) (or (and .cse0 .cse1 (= ULTIMATE.start_main_~s~0 1) (= ULTIMATE.start_main_~a~0 0) .cse2 .cse3 (= ULTIMATE.start_main_~t~0 1)) (and (= ULTIMATE.start_main_~a~0 1) .cse0 .cse1 .cse2 (= ULTIMATE.start_main_~t~0 3) (= ULTIMATE.start_main_~s~0 (+ ULTIMATE.start_main_~t~0 1)) .cse3))) [2021-01-06 18:09:44,372 INFO L189 CegarLoopUtils]: For program point L12-3(lines 12 15) no Hoare annotation was computed. [2021-01-06 18:09:44,372 INFO L189 CegarLoopUtils]: For program point L8(lines 8 10) no Hoare annotation was computed. [2021-01-06 18:09:44,372 INFO L185 CegarLoopUtils]: At program point L12-5(lines 11 17) the Hoare annotation is: (let ((.cse0 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse1 (<= 0 ULTIMATE.start_main_~n~0)) (.cse2 (<= ULTIMATE.start_main_~n~0 1)) (.cse3 (= ULTIMATE.start_assume_abort_if_not_~cond 1))) (or (and .cse0 .cse1 (= ULTIMATE.start_main_~s~0 1) (= ULTIMATE.start_main_~a~0 0) .cse2 .cse3 (= ULTIMATE.start_main_~t~0 1)) (and (= ULTIMATE.start_main_~a~0 1) .cse0 .cse1 .cse2 (= ULTIMATE.start_main_~t~0 3) (= ULTIMATE.start_main_~s~0 (+ ULTIMATE.start_main_~t~0 1)) .cse3))) [2021-01-06 18:09:44,373 INFO L189 CegarLoopUtils]: For program point L12-6(lines 12 15) no Hoare annotation was computed. [2021-01-06 18:09:44,373 INFO L185 CegarLoopUtils]: At program point L12-8(lines 36 37) the Hoare annotation is: (let ((.cse0 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse1 (<= 0 ULTIMATE.start_main_~n~0)) (.cse2 (<= ULTIMATE.start_main_~n~0 1)) (.cse3 (= ULTIMATE.start_assume_abort_if_not_~cond 1))) (or (and .cse0 .cse1 (= ULTIMATE.start_main_~s~0 1) (= ULTIMATE.start_main_~a~0 0) .cse2 .cse3 (= ULTIMATE.start_main_~t~0 1)) (and (= ULTIMATE.start_main_~a~0 1) .cse0 .cse1 .cse2 (= ULTIMATE.start_main_~t~0 3) (= ULTIMATE.start_main_~s~0 (+ ULTIMATE.start_main_~t~0 1)) .cse3))) [2021-01-06 18:09:44,373 INFO L189 CegarLoopUtils]: For program point L12-9(lines 12 15) no Hoare annotation was computed. [2021-01-06 18:09:44,373 INFO L185 CegarLoopUtils]: At program point L12-11(lines 11 17) the Hoare annotation is: (let ((.cse0 (= 1 ULTIMATE.start___VERIFIER_assert_~cond))) (or (and (= ULTIMATE.start_main_~a~0 1) .cse0 (= ULTIMATE.start_main_~t~0 3) (= ULTIMATE.start_main_~s~0 (+ ULTIMATE.start_main_~t~0 1))) (and .cse0 (= ULTIMATE.start_main_~s~0 1) (= ULTIMATE.start_main_~a~0 0) (= ULTIMATE.start_main_~t~0 1)))) [2021-01-06 18:09:44,373 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-01-06 18:09:44,374 INFO L189 CegarLoopUtils]: For program point L12-12(lines 12 15) no Hoare annotation was computed. [2021-01-06 18:09:44,374 INFO L185 CegarLoopUtils]: At program point L12-14(lines 11 17) the Hoare annotation is: (let ((.cse0 (= 1 ULTIMATE.start___VERIFIER_assert_~cond))) (or (and (= ULTIMATE.start_main_~a~0 1) .cse0 (= ULTIMATE.start_main_~t~0 3) (= ULTIMATE.start_main_~s~0 (+ ULTIMATE.start_main_~t~0 1))) (and .cse0 (= ULTIMATE.start_main_~s~0 1) (= ULTIMATE.start_main_~a~0 0) (= ULTIMATE.start_main_~t~0 1)))) [2021-01-06 18:09:44,374 INFO L189 CegarLoopUtils]: For program point L12-15(lines 12 15) no Hoare annotation was computed. [2021-01-06 18:09:44,374 INFO L192 CegarLoopUtils]: At program point L12-17(lines 11 17) the Hoare annotation is: true [2021-01-06 18:09:44,374 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-01-06 18:09:44,374 INFO L189 CegarLoopUtils]: For program point L13(lines 13 14) no Hoare annotation was computed. [2021-01-06 18:09:44,374 INFO L189 CegarLoopUtils]: For program point L13-1(lines 13 14) no Hoare annotation was computed. [2021-01-06 18:09:44,375 INFO L189 CegarLoopUtils]: For program point L13-2(lines 13 14) no Hoare annotation was computed. [2021-01-06 18:09:44,375 INFO L189 CegarLoopUtils]: For program point L13-3(lines 13 14) no Hoare annotation was computed. [2021-01-06 18:09:44,375 INFO L189 CegarLoopUtils]: For program point L9(line 9) no Hoare annotation was computed. [2021-01-06 18:09:44,375 INFO L189 CegarLoopUtils]: For program point L13-4(lines 13 14) no Hoare annotation was computed. [2021-01-06 18:09:44,375 INFO L189 CegarLoopUtils]: For program point L13-5(lines 13 14) no Hoare annotation was computed. [2021-01-06 18:09:44,375 INFO L185 CegarLoopUtils]: At program point L30-2(lines 30 42) the Hoare annotation is: (let ((.cse0 (<= 0 ULTIMATE.start_main_~n~0)) (.cse1 (<= ULTIMATE.start_main_~n~0 1)) (.cse2 (= ULTIMATE.start_assume_abort_if_not_~cond 1))) (or (and (= ULTIMATE.start_main_~a~0 1) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse0 .cse1 (= ULTIMATE.start_main_~t~0 3) (= ULTIMATE.start_main_~s~0 (+ ULTIMATE.start_main_~t~0 1)) .cse2) (and .cse0 (= ULTIMATE.start_main_~s~0 1) (= ULTIMATE.start_main_~a~0 0) .cse1 .cse2 (= ULTIMATE.start_main_~t~0 1)))) [2021-01-06 18:09:44,375 INFO L189 CegarLoopUtils]: For program point L30-3(lines 30 42) no Hoare annotation was computed. [2021-01-06 18:09:44,375 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-01-06 18:09:44,397 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.01 06:09:44 BoogieIcfgContainer [2021-01-06 18:09:44,398 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-01-06 18:09:44,398 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-01-06 18:09:44,398 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-01-06 18:09:44,399 INFO L275 PluginConnector]: Witness Printer initialized [2021-01-06 18:09:44,399 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 06:09:40" (3/4) ... [2021-01-06 18:09:44,403 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-01-06 18:09:44,414 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2021-01-06 18:09:44,415 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-01-06 18:09:44,415 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-01-06 18:09:44,415 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-01-06 18:09:44,464 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/nla-digbench-scaling/sqrt1-ll_valuebound1.c-witness.graphml [2021-01-06 18:09:44,464 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-01-06 18:09:44,465 INFO L168 Benchmark]: Toolchain (without parser) took 4408.51 ms. Allocated memory was 164.6 MB in the beginning and 199.2 MB in the end (delta: 34.6 MB). Free memory was 139.5 MB in the beginning and 141.1 MB in the end (delta: -1.6 MB). Peak memory consumption was 34.2 MB. Max. memory is 8.0 GB. [2021-01-06 18:09:44,466 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 164.6 MB. Free memory is still 135.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-01-06 18:09:44,467 INFO L168 Benchmark]: CACSL2BoogieTranslator took 247.69 ms. Allocated memory is still 164.6 MB. Free memory was 139.3 MB in the beginning and 129.4 MB in the end (delta: 9.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-01-06 18:09:44,467 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.07 ms. Allocated memory is still 164.6 MB. Free memory was 129.4 MB in the beginning and 128.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-01-06 18:09:44,468 INFO L168 Benchmark]: Boogie Preprocessor took 24.09 ms. Allocated memory is still 164.6 MB. Free memory was 127.8 MB in the beginning and 126.7 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-01-06 18:09:44,468 INFO L168 Benchmark]: RCFGBuilder took 556.69 ms. Allocated memory is still 164.6 MB. Free memory was 126.7 MB in the beginning and 112.4 MB in the end (delta: 14.3 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2021-01-06 18:09:44,469 INFO L168 Benchmark]: TraceAbstraction took 3467.85 ms. Allocated memory was 164.6 MB in the beginning and 199.2 MB in the end (delta: 34.6 MB). Free memory was 112.0 MB in the beginning and 144.2 MB in the end (delta: -32.2 MB). Peak memory consumption was 81.4 MB. Max. memory is 8.0 GB. [2021-01-06 18:09:44,470 INFO L168 Benchmark]: Witness Printer took 65.80 ms. Allocated memory is still 199.2 MB. Free memory was 144.2 MB in the beginning and 141.1 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2021-01-06 18:09:44,474 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 164.6 MB. Free memory is still 135.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 247.69 ms. Allocated memory is still 164.6 MB. Free memory was 139.3 MB in the beginning and 129.4 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 39.07 ms. Allocated memory is still 164.6 MB. Free memory was 129.4 MB in the beginning and 128.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 24.09 ms. Allocated memory is still 164.6 MB. Free memory was 127.8 MB in the beginning and 126.7 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 556.69 ms. Allocated memory is still 164.6 MB. Free memory was 126.7 MB in the beginning and 112.4 MB in the end (delta: 14.3 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 3467.85 ms. Allocated memory was 164.6 MB in the beginning and 199.2 MB in the end (delta: 34.6 MB). Free memory was 112.0 MB in the beginning and 144.2 MB in the end (delta: -32.2 MB). Peak memory consumption was 81.4 MB. Max. memory is 8.0 GB. * Witness Printer took 65.80 ms. Allocated memory is still 199.2 MB. Free memory was 144.2 MB in the beginning and 141.1 MB in the end (delta: 3.1 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: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 14]: 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 6 specifications checked. All of them hold - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: ((((((1 == cond && 0 <= n) && s == 1) && a == 0) && n <= 1) && cond == 1) && t == 1) || ((((((a == 1 && 1 == cond) && 0 <= n) && n <= 1) && t == 3) && s == t + 1) && cond == 1) - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: (((a == 1 && 1 == cond) && t == 3) && s == t + 1) || (((1 == cond && s == 1) && a == 0) && t == 1) - InvariantResult [Line: 30]: Loop Invariant Derived loop invariant: ((((((a == 1 && 1 == cond) && 0 <= n) && n <= 1) && t == 3) && s == t + 1) && cond == 1) || (((((0 <= n && s == 1) && a == 0) && n <= 1) && cond == 1) && t == 1) - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: ((((((1 == cond && 0 <= n) && s == 1) && a == 0) && n <= 1) && cond == 1) && t == 1) || ((((((a == 1 && 1 == cond) && 0 <= n) && n <= 1) && t == 3) && s == t + 1) && cond == 1) - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: (((a == 1 && 1 == cond) && t == 3) && s == t + 1) || (((1 == cond && s == 1) && a == 0) && t == 1) - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: ((((((1 == cond && 0 <= n) && s == 1) && a == 0) && n <= 1) && cond == 1) && t == 1) || ((((((a == 1 && 1 == cond) && 0 <= n) && n <= 1) && t == 3) && s == t + 1) && cond == 1) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 33 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.7s, OverallIterations: 6, TraceHistogramMax: 3, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 118 SDtfs, 96 SDslu, 166 SDs, 0 SdLazy, 230 SolverSat, 71 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 71 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=45occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 26 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 8 PreInvPairs, 22 NumberOfFragments, 245 HoareAnnotationTreeSize, 8 FomulaSimplifications, 130 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 8 FomulaSimplificationsInter, 126 FormulaSimplificationTreeSizeReductionInter, 0.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 74 NumberOfCodeBlocks, 74 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 68 ConstructedInterpolants, 0 QuantifiedInterpolants, 6711 SizeOfPredicates, 19 NumberOfNonLiveVariables, 310 ConjunctsInSsa, 61 ConjunctsInUnsatCore, 6 InterpolantComputations, 3 PerfectInterpolantSequences, 4/17 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...