/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/loops-crafted-1/sum_by_3.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-06 17:05:07,927 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-06 17:05:07,930 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-06 17:05:07,964 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-06 17:05:07,965 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-06 17:05:07,966 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-06 17:05:07,968 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-06 17:05:07,971 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-06 17:05:07,973 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-06 17:05:07,974 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-06 17:05:07,975 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-06 17:05:07,977 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-06 17:05:07,977 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-06 17:05:07,979 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-06 17:05:07,980 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-06 17:05:07,981 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-06 17:05:07,983 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-06 17:05:07,984 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-06 17:05:07,986 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-06 17:05:07,988 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-06 17:05:07,990 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-06 17:05:07,995 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-06 17:05:07,999 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-06 17:05:08,001 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-06 17:05:08,019 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-06 17:05:08,026 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-06 17:05:08,027 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-06 17:05:08,032 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-06 17:05:08,035 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-06 17:05:08,039 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-06 17:05:08,040 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-06 17:05:08,043 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-06 17:05:08,046 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-06 17:05:08,047 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-06 17:05:08,058 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-06 17:05:08,059 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-06 17:05:08,060 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 17:05:08,110 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-06 17:05:08,111 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-06 17:05:08,115 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-06 17:05:08,116 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-06 17:05:08,116 INFO L138 SettingsManager]: * Use SBE=true [2021-01-06 17:05:08,116 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-06 17:05:08,116 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-06 17:05:08,116 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-06 17:05:08,117 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-06 17:05:08,117 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-06 17:05:08,117 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-06 17:05:08,117 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-06 17:05:08,118 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-06 17:05:08,118 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-06 17:05:08,119 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-06 17:05:08,119 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-06 17:05:08,119 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-06 17:05:08,119 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 17:05:08,120 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-06 17:05:08,120 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-06 17:05:08,120 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-06 17:05:08,120 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-06 17:05:08,120 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-06 17:05:08,121 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-06 17:05:08,121 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-06 17:05:08,121 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-06 17:05:08,591 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-06 17:05:08,619 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-06 17:05:08,623 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-06 17:05:08,624 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-06 17:05:08,625 INFO L275 PluginConnector]: CDTParser initialized [2021-01-06 17:05:08,626 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops-crafted-1/sum_by_3.c [2021-01-06 17:05:08,720 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/0d4f95ff8/b027728763f1438dafe2430189af2aee/FLAGae8e99f92 [2021-01-06 17:05:09,395 INFO L306 CDTParser]: Found 1 translation units. [2021-01-06 17:05:09,396 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/loops-crafted-1/sum_by_3.c [2021-01-06 17:05:09,404 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/0d4f95ff8/b027728763f1438dafe2430189af2aee/FLAGae8e99f92 [2021-01-06 17:05:09,749 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/0d4f95ff8/b027728763f1438dafe2430189af2aee [2021-01-06 17:05:09,752 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-06 17:05:09,757 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-06 17:05:09,763 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-06 17:05:09,763 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-06 17:05:09,767 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-06 17:05:09,768 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 05:05:09" (1/1) ... [2021-01-06 17:05:09,769 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a9cb9f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:05:09, skipping insertion in model container [2021-01-06 17:05:09,770 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 05:05:09" (1/1) ... [2021-01-06 17:05:09,778 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-06 17:05:09,793 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-01-06 17:05:09,950 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/loops-crafted-1/sum_by_3.c[406,419] left hand side expression in assignment: lhs: VariableLHS[~n~0,] left hand side expression in assignment: lhs: VariableLHS[~i~0,] left hand side expression in assignment: lhs: VariableLHS[~i~0,] left hand side expression in assignment: lhs: VariableLHS[~j~0,] left hand side expression in assignment: lhs: VariableLHS[~k~0,] left hand side expression in assignment: lhs: VariableLHS[~k~0,] [2021-01-06 17:05:09,967 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 17:05:09,977 INFO L203 MainTranslator]: Completed pre-run [2021-01-06 17:05:09,992 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/loops-crafted-1/sum_by_3.c[406,419] left hand side expression in assignment: lhs: VariableLHS[~n~0,] left hand side expression in assignment: lhs: VariableLHS[~i~0,] left hand side expression in assignment: lhs: VariableLHS[~i~0,] left hand side expression in assignment: lhs: VariableLHS[~j~0,] left hand side expression in assignment: lhs: VariableLHS[~k~0,] left hand side expression in assignment: lhs: VariableLHS[~k~0,] [2021-01-06 17:05:09,998 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 17:05:10,015 INFO L208 MainTranslator]: Completed translation [2021-01-06 17:05:10,016 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:05:10 WrapperNode [2021-01-06 17:05:10,016 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-06 17:05:10,017 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-06 17:05:10,017 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-06 17:05:10,018 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-06 17:05:10,026 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:05:10" (1/1) ... [2021-01-06 17:05:10,035 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:05:10" (1/1) ... [2021-01-06 17:05:10,058 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-06 17:05:10,059 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-06 17:05:10,059 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-06 17:05:10,059 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-06 17:05:10,069 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:05:10" (1/1) ... [2021-01-06 17:05:10,069 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:05:10" (1/1) ... [2021-01-06 17:05:10,070 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:05:10" (1/1) ... [2021-01-06 17:05:10,071 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:05:10" (1/1) ... [2021-01-06 17:05:10,075 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:05:10" (1/1) ... [2021-01-06 17:05:10,080 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:05:10" (1/1) ... [2021-01-06 17:05:10,081 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:05:10" (1/1) ... [2021-01-06 17:05:10,084 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-06 17:05:10,085 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-06 17:05:10,085 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-06 17:05:10,085 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-06 17:05:10,086 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:05:10" (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 17:05:10,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-06 17:05:10,193 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-06 17:05:10,194 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-06 17:05:10,194 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-06 17:05:10,544 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-06 17:05:10,544 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2021-01-06 17:05:10,564 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:05:10 BoogieIcfgContainer [2021-01-06 17:05:10,566 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-06 17:05:10,568 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-06 17:05:10,568 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-06 17:05:10,578 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-06 17:05:10,579 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.01 05:05:09" (1/3) ... [2021-01-06 17:05:10,583 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c7f371a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 05:05:10, skipping insertion in model container [2021-01-06 17:05:10,583 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:05:10" (2/3) ... [2021-01-06 17:05:10,584 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c7f371a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 05:05:10, skipping insertion in model container [2021-01-06 17:05:10,584 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:05:10" (3/3) ... [2021-01-06 17:05:10,586 INFO L111 eAbstractionObserver]: Analyzing ICFG sum_by_3.c [2021-01-06 17:05:10,599 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-06 17:05:10,605 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-01-06 17:05:10,634 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-01-06 17:05:10,673 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-06 17:05:10,673 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-06 17:05:10,674 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-06 17:05:10,674 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-06 17:05:10,674 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-06 17:05:10,674 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-06 17:05:10,674 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-06 17:05:10,674 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-06 17:05:10,693 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2021-01-06 17:05:10,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-01-06 17:05:10,701 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:05:10,702 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:05:10,703 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:05:10,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:05:10,712 INFO L82 PathProgramCache]: Analyzing trace with hash -1645470860, now seen corresponding path program 1 times [2021-01-06 17:05:10,726 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:05:10,727 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300747120] [2021-01-06 17:05:10,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:05:10,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:05:11,001 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 17:05:11,003 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300747120] [2021-01-06 17:05:11,004 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:05:11,005 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-06 17:05:11,006 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673133860] [2021-01-06 17:05:11,012 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-01-06 17:05:11,013 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:05:11,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-01-06 17:05:11,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-01-06 17:05:11,039 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 2 states. [2021-01-06 17:05:11,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:05:11,070 INFO L93 Difference]: Finished difference Result 28 states and 39 transitions. [2021-01-06 17:05:11,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-01-06 17:05:11,072 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2021-01-06 17:05:11,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:05:11,100 INFO L225 Difference]: With dead ends: 28 [2021-01-06 17:05:11,100 INFO L226 Difference]: Without dead ends: 12 [2021-01-06 17:05:11,107 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 17:05:11,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2021-01-06 17:05:11,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2021-01-06 17:05:11,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-01-06 17:05:11,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2021-01-06 17:05:11,151 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 14 transitions. Word has length 11 [2021-01-06 17:05:11,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:05:11,152 INFO L481 AbstractCegarLoop]: Abstraction has 12 states and 14 transitions. [2021-01-06 17:05:11,152 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-01-06 17:05:11,152 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 14 transitions. [2021-01-06 17:05:11,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-01-06 17:05:11,153 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:05:11,153 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:05:11,155 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-06 17:05:11,155 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:05:11,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:05:11,161 INFO L82 PathProgramCache]: Analyzing trace with hash -26777608, now seen corresponding path program 1 times [2021-01-06 17:05:11,162 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:05:11,163 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155539085] [2021-01-06 17:05:11,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:05:11,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:05:11,764 WARN L197 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 32 [2021-01-06 17:05:11,777 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 17:05:11,778 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155539085] [2021-01-06 17:05:11,778 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:05:11,778 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-06 17:05:11,779 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047659340] [2021-01-06 17:05:11,780 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-06 17:05:11,780 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:05:11,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-06 17:05:11,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-01-06 17:05:11,782 INFO L87 Difference]: Start difference. First operand 12 states and 14 transitions. Second operand 7 states. [2021-01-06 17:05:12,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:05:12,002 INFO L93 Difference]: Finished difference Result 33 states and 38 transitions. [2021-01-06 17:05:12,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-06 17:05:12,003 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 11 [2021-01-06 17:05:12,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:05:12,004 INFO L225 Difference]: With dead ends: 33 [2021-01-06 17:05:12,004 INFO L226 Difference]: Without dead ends: 29 [2021-01-06 17:05:12,006 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-01-06 17:05:12,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-01-06 17:05:12,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 17. [2021-01-06 17:05:12,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-01-06 17:05:12,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 21 transitions. [2021-01-06 17:05:12,014 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 21 transitions. Word has length 11 [2021-01-06 17:05:12,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:05:12,014 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 21 transitions. [2021-01-06 17:05:12,014 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-06 17:05:12,014 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 21 transitions. [2021-01-06 17:05:12,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-01-06 17:05:12,015 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:05:12,015 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:05:12,016 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-01-06 17:05:12,016 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:05:12,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:05:12,017 INFO L82 PathProgramCache]: Analyzing trace with hash 182012736, now seen corresponding path program 1 times [2021-01-06 17:05:12,017 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:05:12,018 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156110604] [2021-01-06 17:05:12,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:05:12,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:05:12,862 WARN L197 SmtUtils]: Spent 350.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 46 [2021-01-06 17:05:12,887 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:05:12,888 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156110604] [2021-01-06 17:05:12,888 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1800562669] [2021-01-06 17:05:12,889 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 17:05:12,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:05:12,949 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 17 conjunts are in the unsatisfiable core [2021-01-06 17:05:12,954 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:05:13,345 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 17:05:13,374 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 17:05:13,412 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:05:13,412 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 17:05:13,413 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2021-01-06 17:05:13,414 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580821725] [2021-01-06 17:05:13,415 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-01-06 17:05:13,416 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:05:13,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-01-06 17:05:13,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2021-01-06 17:05:13,423 INFO L87 Difference]: Start difference. First operand 17 states and 21 transitions. Second operand 15 states. [2021-01-06 17:05:14,053 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 25 [2021-01-06 17:05:14,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:05:14,097 INFO L93 Difference]: Finished difference Result 45 states and 53 transitions. [2021-01-06 17:05:14,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-01-06 17:05:14,100 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 12 [2021-01-06 17:05:14,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:05:14,101 INFO L225 Difference]: With dead ends: 45 [2021-01-06 17:05:14,101 INFO L226 Difference]: Without dead ends: 41 [2021-01-06 17:05:14,103 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=87, Invalid=293, Unknown=0, NotChecked=0, Total=380 [2021-01-06 17:05:14,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-01-06 17:05:14,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 18. [2021-01-06 17:05:14,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-01-06 17:05:14,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 23 transitions. [2021-01-06 17:05:14,112 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 23 transitions. Word has length 12 [2021-01-06 17:05:14,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:05:14,112 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 23 transitions. [2021-01-06 17:05:14,112 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2021-01-06 17:05:14,113 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 23 transitions. [2021-01-06 17:05:14,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-01-06 17:05:14,114 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:05:14,114 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:05:14,327 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-01-06 17:05:14,328 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:05:14,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:05:14,329 INFO L82 PathProgramCache]: Analyzing trace with hash -828440446, now seen corresponding path program 1 times [2021-01-06 17:05:14,330 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:05:14,330 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477350628] [2021-01-06 17:05:14,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:05:14,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:05:14,389 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:05:14,389 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477350628] [2021-01-06 17:05:14,390 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:05:14,390 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 17:05:14,390 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140435337] [2021-01-06 17:05:14,390 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 17:05:14,391 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:05:14,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 17:05:14,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-01-06 17:05:14,392 INFO L87 Difference]: Start difference. First operand 18 states and 23 transitions. Second operand 4 states. [2021-01-06 17:05:14,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:05:14,415 INFO L93 Difference]: Finished difference Result 29 states and 36 transitions. [2021-01-06 17:05:14,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-06 17:05:14,415 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2021-01-06 17:05:14,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:05:14,416 INFO L225 Difference]: With dead ends: 29 [2021-01-06 17:05:14,416 INFO L226 Difference]: Without dead ends: 18 [2021-01-06 17:05:14,417 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-01-06 17:05:14,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-01-06 17:05:14,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2021-01-06 17:05:14,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-01-06 17:05:14,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2021-01-06 17:05:14,421 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 12 [2021-01-06 17:05:14,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:05:14,422 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2021-01-06 17:05:14,422 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 17:05:14,422 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2021-01-06 17:05:14,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-01-06 17:05:14,423 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:05:14,423 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:05:14,423 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-01-06 17:05:14,423 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:05:14,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:05:14,424 INFO L82 PathProgramCache]: Analyzing trace with hash -1935421192, now seen corresponding path program 2 times [2021-01-06 17:05:14,424 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:05:14,424 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348076393] [2021-01-06 17:05:14,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:05:14,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:05:14,767 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2021-01-06 17:05:15,082 WARN L197 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 45 [2021-01-06 17:05:15,108 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:05:15,108 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348076393] [2021-01-06 17:05:15,109 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [237533828] [2021-01-06 17:05:15,109 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 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 17:05:15,195 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 17:05:15,195 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:05:15,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 20 conjunts are in the unsatisfiable core [2021-01-06 17:05:15,198 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:05:15,381 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 17:05:15,407 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:05:15,408 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 17:05:15,408 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2021-01-06 17:05:15,408 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874141036] [2021-01-06 17:05:15,409 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-01-06 17:05:15,409 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:05:15,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-01-06 17:05:15,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2021-01-06 17:05:15,410 INFO L87 Difference]: Start difference. First operand 18 states and 22 transitions. Second operand 15 states. [2021-01-06 17:05:15,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:05:15,838 INFO L93 Difference]: Finished difference Result 51 states and 59 transitions. [2021-01-06 17:05:15,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-01-06 17:05:15,839 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2021-01-06 17:05:15,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:05:15,840 INFO L225 Difference]: With dead ends: 51 [2021-01-06 17:05:15,841 INFO L226 Difference]: Without dead ends: 47 [2021-01-06 17:05:15,841 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2021-01-06 17:05:15,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-01-06 17:05:15,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 19. [2021-01-06 17:05:15,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2021-01-06 17:05:15,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 24 transitions. [2021-01-06 17:05:15,848 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 24 transitions. Word has length 13 [2021-01-06 17:05:15,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:05:15,848 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 24 transitions. [2021-01-06 17:05:15,848 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2021-01-06 17:05:15,848 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 24 transitions. [2021-01-06 17:05:15,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-01-06 17:05:15,849 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:05:15,849 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:05:16,053 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:05:16,054 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:05:16,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:05:16,055 INFO L82 PathProgramCache]: Analyzing trace with hash 1349092922, now seen corresponding path program 1 times [2021-01-06 17:05:16,055 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:05:16,056 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60322547] [2021-01-06 17:05:16,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:05:16,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:05:16,296 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:05:16,296 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60322547] [2021-01-06 17:05:16,297 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1800940992] [2021-01-06 17:05:16,297 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 17:05:16,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:05:16,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 6 conjunts are in the unsatisfiable core [2021-01-06 17:05:16,339 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:05:16,517 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-06 17:05:16,517 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:05:16,517 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2021-01-06 17:05:16,518 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047567865] [2021-01-06 17:05:16,518 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 17:05:16,518 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:05:16,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 17:05:16,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-01-06 17:05:16,519 INFO L87 Difference]: Start difference. First operand 19 states and 24 transitions. Second operand 5 states. [2021-01-06 17:05:16,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:05:16,706 INFO L93 Difference]: Finished difference Result 31 states and 37 transitions. [2021-01-06 17:05:16,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 17:05:16,712 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2021-01-06 17:05:16,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:05:16,712 INFO L225 Difference]: With dead ends: 31 [2021-01-06 17:05:16,712 INFO L226 Difference]: Without dead ends: 24 [2021-01-06 17:05:16,713 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-01-06 17:05:16,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-01-06 17:05:16,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 20. [2021-01-06 17:05:16,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-01-06 17:05:16,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 25 transitions. [2021-01-06 17:05:16,720 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 25 transitions. Word has length 13 [2021-01-06 17:05:16,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:05:16,720 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 25 transitions. [2021-01-06 17:05:16,720 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 17:05:16,720 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 25 transitions. [2021-01-06 17:05:16,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-01-06 17:05:16,721 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:05:16,721 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:05:16,933 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:05:16,934 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:05:16,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:05:16,935 INFO L82 PathProgramCache]: Analyzing trace with hash -1350953607, now seen corresponding path program 1 times [2021-01-06 17:05:16,935 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:05:16,936 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497103437] [2021-01-06 17:05:16,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:05:16,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:05:17,057 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:05:17,058 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497103437] [2021-01-06 17:05:17,058 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1860915396] [2021-01-06 17:05:17,058 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 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 17:05:17,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:05:17,103 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 8 conjunts are in the unsatisfiable core [2021-01-06 17:05:17,105 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:05:17,156 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:05:17,156 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 17:05:17,156 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2021-01-06 17:05:17,157 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944017766] [2021-01-06 17:05:17,157 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-01-06 17:05:17,157 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:05:17,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-01-06 17:05:17,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-01-06 17:05:17,158 INFO L87 Difference]: Start difference. First operand 20 states and 25 transitions. Second operand 9 states. [2021-01-06 17:05:17,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:05:17,258 INFO L93 Difference]: Finished difference Result 29 states and 35 transitions. [2021-01-06 17:05:17,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 17:05:17,258 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 13 [2021-01-06 17:05:17,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:05:17,259 INFO L225 Difference]: With dead ends: 29 [2021-01-06 17:05:17,259 INFO L226 Difference]: Without dead ends: 20 [2021-01-06 17:05:17,259 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-01-06 17:05:17,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-01-06 17:05:17,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2021-01-06 17:05:17,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-01-06 17:05:17,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions. [2021-01-06 17:05:17,265 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 24 transitions. Word has length 13 [2021-01-06 17:05:17,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:05:17,265 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 24 transitions. [2021-01-06 17:05:17,266 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-01-06 17:05:17,266 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions. [2021-01-06 17:05:17,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-01-06 17:05:17,266 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:05:17,266 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:05:17,480 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:05:17,481 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:05:17,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:05:17,482 INFO L82 PathProgramCache]: Analyzing trace with hash 1143603776, now seen corresponding path program 3 times [2021-01-06 17:05:17,482 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:05:17,483 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968789031] [2021-01-06 17:05:17,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:05:17,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:05:19,678 WARN L197 SmtUtils]: Spent 1.90 s on a formula simplification. DAG size of input: 66 DAG size of output: 48 [2021-01-06 17:05:19,703 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:05:19,704 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968789031] [2021-01-06 17:05:19,704 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1136416174] [2021-01-06 17:05:19,704 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 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 17:05:36,164 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-01-06 17:05:36,164 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:05:36,168 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 20 conjunts are in the unsatisfiable core [2021-01-06 17:05:36,169 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:05:36,899 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2021-01-06 17:05:37,000 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 15 disjuncts [2021-01-06 17:05:38,308 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 17:05:39,895 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 17:05:41,513 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2021-01-06 17:05:42,267 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-06 17:05:42,268 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 17:05:42,268 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2021-01-06 17:05:42,268 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735688986] [2021-01-06 17:05:42,269 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-01-06 17:05:42,269 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:05:42,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-01-06 17:05:42,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2021-01-06 17:05:42,270 INFO L87 Difference]: Start difference. First operand 20 states and 24 transitions. Second operand 17 states. [2021-01-06 17:05:43,110 WARN L197 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 26 [2021-01-06 17:05:43,580 WARN L197 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 29 [2021-01-06 17:05:44,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:05:44,756 INFO L93 Difference]: Finished difference Result 45 states and 52 transitions. [2021-01-06 17:05:44,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-01-06 17:05:44,757 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2021-01-06 17:05:44,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:05:44,757 INFO L225 Difference]: With dead ends: 45 [2021-01-06 17:05:44,758 INFO L226 Difference]: Without dead ends: 35 [2021-01-06 17:05:44,759 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 6 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=148, Invalid=554, Unknown=0, NotChecked=0, Total=702 [2021-01-06 17:05:44,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-01-06 17:05:44,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 15. [2021-01-06 17:05:44,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2021-01-06 17:05:44,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2021-01-06 17:05:44,763 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 14 [2021-01-06 17:05:44,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:05:44,763 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2021-01-06 17:05:44,763 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2021-01-06 17:05:44,764 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2021-01-06 17:05:44,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-01-06 17:05:44,764 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:05:44,764 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:05:44,973 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:05:44,974 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:05:44,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:05:44,975 INFO L82 PathProgramCache]: Analyzing trace with hash 1728071361, now seen corresponding path program 2 times [2021-01-06 17:05:44,975 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:05:44,976 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453807501] [2021-01-06 17:05:44,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:05:44,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:05:45,143 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:05:45,143 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453807501] [2021-01-06 17:05:45,144 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1014627394] [2021-01-06 17:05:45,144 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 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 17:05:45,215 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 17:05:45,216 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:05:45,216 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 10 conjunts are in the unsatisfiable core [2021-01-06 17:05:45,217 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:05:45,281 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2021-01-06 17:05:46,322 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:05:46,323 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 17:05:46,323 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2021-01-06 17:05:46,323 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923105270] [2021-01-06 17:05:46,324 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-01-06 17:05:46,324 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:05:46,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-01-06 17:05:46,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-01-06 17:05:46,325 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand 10 states. [2021-01-06 17:05:46,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:05:46,469 INFO L93 Difference]: Finished difference Result 25 states and 29 transitions. [2021-01-06 17:05:46,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-06 17:05:46,470 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2021-01-06 17:05:46,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:05:46,470 INFO L225 Difference]: With dead ends: 25 [2021-01-06 17:05:46,471 INFO L226 Difference]: Without dead ends: 16 [2021-01-06 17:05:46,471 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-01-06 17:05:46,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-01-06 17:05:46,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-01-06 17:05:46,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-01-06 17:05:46,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2021-01-06 17:05:46,476 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 14 [2021-01-06 17:05:46,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:05:46,476 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2021-01-06 17:05:46,476 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-01-06 17:05:46,477 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2021-01-06 17:05:46,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-01-06 17:05:46,477 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:05:46,477 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:05:46,679 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:05:46,680 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:05:46,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:05:46,681 INFO L82 PathProgramCache]: Analyzing trace with hash -1606402439, now seen corresponding path program 3 times [2021-01-06 17:05:46,681 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:05:46,681 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319747738] [2021-01-06 17:05:46,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:05:46,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:05:46,878 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:05:46,878 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319747738] [2021-01-06 17:05:46,878 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [312032537] [2021-01-06 17:05:46,878 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 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 17:05:46,960 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-01-06 17:05:46,960 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:05:46,961 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 13 conjunts are in the unsatisfiable core [2021-01-06 17:05:46,962 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:05:47,111 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2021-01-06 17:05:47,117 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2021-01-06 17:05:47,121 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 17:05:47,138 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-01-06 17:05:47,139 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:05:47,139 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 12 [2021-01-06 17:05:47,139 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794089871] [2021-01-06 17:05:47,139 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 17:05:47,140 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:05:47,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 17:05:47,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-01-06 17:05:47,141 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand 6 states. [2021-01-06 17:05:47,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:05:47,160 INFO L93 Difference]: Finished difference Result 16 states and 18 transitions. [2021-01-06 17:05:47,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 17:05:47,160 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2021-01-06 17:05:47,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:05:47,161 INFO L225 Difference]: With dead ends: 16 [2021-01-06 17:05:47,161 INFO L226 Difference]: Without dead ends: 0 [2021-01-06 17:05:47,161 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-01-06 17:05:47,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-01-06 17:05:47,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-01-06 17:05:47,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-01-06 17:05:47,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-01-06 17:05:47,162 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2021-01-06 17:05:47,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:05:47,163 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-01-06 17:05:47,163 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 17:05:47,163 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-01-06 17:05:47,163 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-01-06 17:05:47,366 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-01-06 17:05:47,371 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-01-06 17:05:48,126 WARN L197 SmtUtils]: Spent 602.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 41 [2021-01-06 17:05:48,462 WARN L197 SmtUtils]: Spent 333.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 35 [2021-01-06 17:05:48,547 INFO L189 CegarLoopUtils]: For program point L19(line 19) no Hoare annotation was computed. [2021-01-06 17:05:48,547 INFO L189 CegarLoopUtils]: For program point L-1(line -1) no Hoare annotation was computed. [2021-01-06 17:05:48,547 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-01-06 17:05:48,547 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-01-06 17:05:48,547 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 10) no Hoare annotation was computed. [2021-01-06 17:05:48,547 INFO L192 CegarLoopUtils]: At program point L33(lines 16 34) the Hoare annotation is: true [2021-01-06 17:05:48,548 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-01-06 17:05:48,548 INFO L185 CegarLoopUtils]: At program point L29-2(lines 29 31) the Hoare annotation is: (let ((.cse6 (mod ULTIMATE.start_main_~n~0 4294967296))) (let ((.cse4 (= (mod ULTIMATE.start_main_~i~0 4294967296) ULTIMATE.start_main_~j~0)) (.cse1 (= ULTIMATE.start_main_~k~0 ULTIMATE.start_main_~j~0)) (.cse2 (<= 20000001 ~SIZE~0)) (.cse5 (<= .cse6 (mod ULTIMATE.start_main_~k~0 4294967296))) (.cse3 (<= ~SIZE~0 20000001))) (or (let ((.cse0 (div ULTIMATE.start_main_~i~0 4294967296))) (and (<= (+ (* 4294967296 .cse0) ULTIMATE.start_main_~n~0) (+ (* 4294967296 (div ULTIMATE.start_main_~n~0 4294967296)) ULTIMATE.start_main_~i~0)) (= ULTIMATE.start_main_~i~0 0) (= ULTIMATE.start_main_~i~0 (+ (* .cse0 4294967296) ULTIMATE.start_main_~j~0)) .cse1 .cse2 .cse3)) (and .cse4 .cse1 .cse2 (= ULTIMATE.start_main_~i~0 2) .cse3 .cse5) (and (<= .cse6 (mod ~SIZE~0 4294967296)) .cse4 (< (mod (+ ULTIMATE.start_main_~i~0 4294967295) 4294967296) .cse6) .cse1 .cse2 .cse5 .cse3)))) [2021-01-06 17:05:48,548 INFO L189 CegarLoopUtils]: For program point L29-3(lines 29 31) no Hoare annotation was computed. [2021-01-06 17:05:48,548 INFO L185 CegarLoopUtils]: At program point L25-2(lines 25 27) the Hoare annotation is: (let ((.cse2 (<= 20000001 ~SIZE~0)) (.cse3 (<= ~SIZE~0 20000001))) (or (let ((.cse0 (mod ULTIMATE.start_main_~n~0 4294967296)) (.cse1 (mod ULTIMATE.start_main_~i~0 4294967296))) (and (<= .cse0 (mod ~SIZE~0 4294967296)) (= .cse1 ULTIMATE.start_main_~j~0) (< (mod (+ ULTIMATE.start_main_~i~0 4294967295) 4294967296) .cse0) .cse2 (<= .cse0 .cse1) .cse3)) (let ((.cse4 (div ULTIMATE.start_main_~i~0 4294967296))) (and (<= (+ (* 4294967296 .cse4) ULTIMATE.start_main_~n~0) (+ (* 4294967296 (div ULTIMATE.start_main_~n~0 4294967296)) ULTIMATE.start_main_~i~0)) (= ULTIMATE.start_main_~i~0 0) (= ULTIMATE.start_main_~i~0 (+ (* .cse4 4294967296) ULTIMATE.start_main_~j~0)) .cse2 .cse3)))) [2021-01-06 17:05:48,548 INFO L189 CegarLoopUtils]: For program point L25-3(lines 25 27) no Hoare annotation was computed. [2021-01-06 17:05:48,548 INFO L185 CegarLoopUtils]: At program point L21-2(lines 21 23) the Hoare annotation is: (let ((.cse0 (<= 20000001 ~SIZE~0)) (.cse1 (<= ~SIZE~0 20000001))) (or (and (= ULTIMATE.start_main_~i~0 0) .cse0 (<= (+ ULTIMATE.start_main_~n~0 (* 4294967296 (div ~SIZE~0 4294967296))) (+ (* 4294967296 (div ULTIMATE.start_main_~n~0 4294967296)) 20000001)) .cse1) (let ((.cse2 (mod ULTIMATE.start_main_~n~0 4294967296))) (and (<= .cse2 (mod ~SIZE~0 4294967296)) (< (mod (+ ULTIMATE.start_main_~i~0 4294967295) 4294967296) .cse2) .cse0 .cse1)))) [2021-01-06 17:05:48,548 INFO L189 CegarLoopUtils]: For program point L21-3(lines 21 23) no Hoare annotation was computed. [2021-01-06 17:05:48,548 INFO L189 CegarLoopUtils]: For program point L9(lines 9 11) no Hoare annotation was computed. [2021-01-06 17:05:48,548 INFO L192 CegarLoopUtils]: At program point L9-2(lines 8 13) the Hoare annotation is: true [2021-01-06 17:05:48,549 INFO L189 CegarLoopUtils]: For program point L10(line 10) no Hoare annotation was computed. [2021-01-06 17:05:48,568 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.01 05:05:48 BoogieIcfgContainer [2021-01-06 17:05:48,569 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-01-06 17:05:48,569 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-01-06 17:05:48,569 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-01-06 17:05:48,570 INFO L275 PluginConnector]: Witness Printer initialized [2021-01-06 17:05:48,570 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:05:10" (3/4) ... [2021-01-06 17:05:48,577 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-01-06 17:05:48,588 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-01-06 17:05:48,588 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-01-06 17:05:48,588 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-01-06 17:05:48,588 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-01-06 17:05:48,628 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/loops-crafted-1/sum_by_3.c-witness.graphml [2021-01-06 17:05:48,628 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-01-06 17:05:48,629 INFO L168 Benchmark]: Toolchain (without parser) took 38874.58 ms. Allocated memory was 153.1 MB in the beginning and 222.3 MB in the end (delta: 69.2 MB). Free memory was 128.4 MB in the beginning and 151.6 MB in the end (delta: -23.1 MB). Peak memory consumption was 46.9 MB. Max. memory is 8.0 GB. [2021-01-06 17:05:48,630 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 153.1 MB. Free memory is still 126.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-01-06 17:05:48,630 INFO L168 Benchmark]: CACSL2BoogieTranslator took 253.70 ms. Allocated memory is still 153.1 MB. Free memory was 128.3 MB in the beginning and 118.2 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-01-06 17:05:48,631 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.54 ms. Allocated memory is still 153.1 MB. Free memory was 118.2 MB in the beginning and 116.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-01-06 17:05:48,632 INFO L168 Benchmark]: Boogie Preprocessor took 25.64 ms. Allocated memory is still 153.1 MB. Free memory was 116.8 MB in the beginning and 115.8 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-01-06 17:05:48,632 INFO L168 Benchmark]: RCFGBuilder took 481.32 ms. Allocated memory is still 153.1 MB. Free memory was 115.7 MB in the beginning and 135.3 MB in the end (delta: -19.6 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2021-01-06 17:05:48,633 INFO L168 Benchmark]: TraceAbstraction took 38000.78 ms. Allocated memory was 153.1 MB in the beginning and 222.3 MB in the end (delta: 69.2 MB). Free memory was 135.3 MB in the beginning and 154.2 MB in the end (delta: -18.9 MB). Peak memory consumption was 134.6 MB. Max. memory is 8.0 GB. [2021-01-06 17:05:48,634 INFO L168 Benchmark]: Witness Printer took 58.55 ms. Allocated memory is still 222.3 MB. Free memory was 153.6 MB in the beginning and 151.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-01-06 17:05:48,637 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 153.1 MB. Free memory is still 126.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 253.70 ms. Allocated memory is still 153.1 MB. Free memory was 128.3 MB in the beginning and 118.2 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 40.54 ms. Allocated memory is still 153.1 MB. Free memory was 118.2 MB in the beginning and 116.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 25.64 ms. Allocated memory is still 153.1 MB. Free memory was 116.8 MB in the beginning and 115.8 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 481.32 ms. Allocated memory is still 153.1 MB. Free memory was 115.7 MB in the beginning and 135.3 MB in the end (delta: -19.6 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 38000.78 ms. Allocated memory was 153.1 MB in the beginning and 222.3 MB in the end (delta: 69.2 MB). Free memory was 135.3 MB in the beginning and 154.2 MB in the end (delta: -18.9 MB). Peak memory consumption was 134.6 MB. Max. memory is 8.0 GB. * Witness Printer took 58.55 ms. Allocated memory is still 222.3 MB. Free memory was 153.6 MB in the beginning and 151.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 10]: 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 1 specifications checked. All of them hold - InvariantResult [Line: 29]: Loop Invariant Derived loop invariant: ((((((4294967296 * (i / 4294967296) + n <= 4294967296 * (n / 4294967296) + i && i == 0) && i == i / 4294967296 * 4294967296 + j) && k == j) && 20000001 <= SIZE) && SIZE <= 20000001) || (((((i % 4294967296 == j && k == j) && 20000001 <= SIZE) && i == 2) && SIZE <= 20000001) && n % 4294967296 <= k % 4294967296)) || ((((((n % 4294967296 <= SIZE % 4294967296 && i % 4294967296 == j) && (i + 4294967295) % 4294967296 < n % 4294967296) && k == j) && 20000001 <= SIZE) && n % 4294967296 <= k % 4294967296) && SIZE <= 20000001) - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 8]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: (((((n % 4294967296 <= SIZE % 4294967296 && i % 4294967296 == j) && (i + 4294967295) % 4294967296 < n % 4294967296) && 20000001 <= SIZE) && n % 4294967296 <= i % 4294967296) && SIZE <= 20000001) || ((((4294967296 * (i / 4294967296) + n <= 4294967296 * (n / 4294967296) + i && i == 0) && i == i / 4294967296 * 4294967296 + j) && 20000001 <= SIZE) && SIZE <= 20000001) - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: (((i == 0 && 20000001 <= SIZE) && n + 4294967296 * (SIZE / 4294967296) <= 4294967296 * (n / 4294967296) + 20000001) && SIZE <= 20000001) || (((n % 4294967296 <= SIZE % 4294967296 && (i + 4294967295) % 4294967296 < n % 4294967296) && 20000001 <= SIZE) && SIZE <= 20000001) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 36.7s, OverallIterations: 10, TraceHistogramMax: 3, AutomataDifference: 4.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 93 SDtfs, 354 SDslu, 221 SDs, 0 SdLazy, 737 SolverSat, 50 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 186 GetRequests, 71 SyntacticMatches, 8 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 7.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=6, 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, 10 MinimizatonAttempts, 87 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 18 NumberOfFragments, 222 HoareAnnotationTreeSize, 5 FomulaSimplifications, 4962 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 5 FomulaSimplificationsInter, 1320 FormulaSimplificationTreeSizeReductionInter, 1.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 17.0s SatisfiabilityAnalysisTime, 13.1s InterpolantComputationTime, 222 NumberOfCodeBlocks, 220 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 205 ConstructedInterpolants, 0 QuantifiedInterpolants, 38757 SizeOfPredicates, 24 NumberOfNonLiveVariables, 409 ConjunctsInSsa, 94 ConjunctsInUnsatCore, 17 InterpolantComputations, 5 PerfectInterpolantSequences, 19/51 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...