/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-dcfa08f [2020-12-23 07:10:45,231 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 07:10:45,234 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 07:10:45,268 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 07:10:45,269 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 07:10:45,270 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 07:10:45,272 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 07:10:45,275 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 07:10:45,277 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 07:10:45,278 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 07:10:45,280 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 07:10:45,281 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 07:10:45,282 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 07:10:45,283 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 07:10:45,285 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 07:10:45,286 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 07:10:45,288 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 07:10:45,289 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 07:10:45,291 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 07:10:45,294 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 07:10:45,296 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 07:10:45,298 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 07:10:45,300 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 07:10:45,301 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 07:10:45,305 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-23 07:10:45,309 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-23 07:10:45,310 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-23 07:10:45,311 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-23 07:10:45,313 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-23 07:10:45,314 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-23 07:10:45,314 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-23 07:10:45,315 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-23 07:10:45,316 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-23 07:10:45,316 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 07:10:45,318 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 07:10:45,319 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 07:10:45,320 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-23 07:10:45,380 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 07:10:45,383 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 07:10:45,385 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 07:10:45,387 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 07:10:45,387 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 07:10:45,388 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 07:10:45,389 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 07:10:45,389 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 07:10:45,389 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 07:10:45,390 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 07:10:45,390 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 07:10:45,390 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 07:10:45,391 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 07:10:45,391 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 07:10:45,391 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 07:10:45,392 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 07:10:45,392 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 07:10:45,392 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 07:10:45,393 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 07:10:45,393 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 07:10:45,395 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 07:10:45,395 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 07:10:45,395 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 07:10:45,395 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 07:10:45,396 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 07:10:45,396 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 07:10:45,878 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 07:10:45,909 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 07:10:45,912 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 07:10:45,914 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 07:10:45,915 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 07:10:45,916 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops-crafted-1/sum_by_3.c [2020-12-23 07:10:45,990 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/ca1824cb1/a4f3d84657284ae7844599382880989a/FLAG843dbd848 [2020-12-23 07:10:46,705 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 07:10:46,706 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/loops-crafted-1/sum_by_3.c [2020-12-23 07:10:46,714 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/ca1824cb1/a4f3d84657284ae7844599382880989a/FLAG843dbd848 [2020-12-23 07:10:47,069 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/ca1824cb1/a4f3d84657284ae7844599382880989a [2020-12-23 07:10:47,072 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 07:10:47,076 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 07:10:47,079 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 07:10:47,079 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 07:10:47,083 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 07:10:47,084 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 07:10:47" (1/1) ... [2020-12-23 07:10:47,086 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35d8def9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:10:47, skipping insertion in model container [2020-12-23 07:10:47,087 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 07:10:47" (1/1) ... [2020-12-23 07:10:47,095 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 07:10:47,114 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-23 07:10:47,260 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,] [2020-12-23 07:10:47,278 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 07:10:47,290 INFO L203 MainTranslator]: Completed pre-run [2020-12-23 07:10:47,304 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,] [2020-12-23 07:10:47,310 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 07:10:47,327 INFO L208 MainTranslator]: Completed translation [2020-12-23 07:10:47,328 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:10:47 WrapperNode [2020-12-23 07:10:47,328 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 07:10:47,329 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 07:10:47,329 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 07:10:47,329 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 07:10:47,338 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:10:47" (1/1) ... [2020-12-23 07:10:47,345 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:10:47" (1/1) ... [2020-12-23 07:10:47,365 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 07:10:47,366 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 07:10:47,367 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 07:10:47,367 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 07:10:47,376 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:10:47" (1/1) ... [2020-12-23 07:10:47,376 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:10:47" (1/1) ... [2020-12-23 07:10:47,378 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:10:47" (1/1) ... [2020-12-23 07:10:47,378 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:10:47" (1/1) ... [2020-12-23 07:10:47,383 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:10:47" (1/1) ... [2020-12-23 07:10:47,388 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:10:47" (1/1) ... [2020-12-23 07:10:47,389 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:10:47" (1/1) ... [2020-12-23 07:10:47,392 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 07:10:47,393 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 07:10:47,393 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 07:10:47,393 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 07:10:47,394 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:10:47" (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 [2020-12-23 07:10:47,515 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 07:10:47,516 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 07:10:47,516 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 07:10:47,516 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 07:10:47,800 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 07:10:47,800 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2020-12-23 07:10:47,802 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 07:10:47 BoogieIcfgContainer [2020-12-23 07:10:47,802 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 07:10:47,804 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 07:10:47,804 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 07:10:47,808 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 07:10:47,808 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 07:10:47" (1/3) ... [2020-12-23 07:10:47,809 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@562a86d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 07:10:47, skipping insertion in model container [2020-12-23 07:10:47,810 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:10:47" (2/3) ... [2020-12-23 07:10:47,810 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@562a86d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 07:10:47, skipping insertion in model container [2020-12-23 07:10:47,810 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 07:10:47" (3/3) ... [2020-12-23 07:10:47,812 INFO L111 eAbstractionObserver]: Analyzing ICFG sum_by_3.c [2020-12-23 07:10:47,819 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 07:10:47,825 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-23 07:10:47,848 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-23 07:10:47,909 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 07:10:47,909 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 07:10:47,910 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 07:10:47,910 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 07:10:47,912 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 07:10:47,912 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 07:10:47,913 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 07:10:47,913 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 07:10:47,946 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2020-12-23 07:10:47,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-23 07:10:47,959 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:10:47,961 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:10:47,961 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:10:47,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:10:47,978 INFO L82 PathProgramCache]: Analyzing trace with hash -1645470860, now seen corresponding path program 1 times [2020-12-23 07:10:48,001 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:10:48,005 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456807040] [2020-12-23 07:10:48,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:10:48,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:10:48,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:10:48,192 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456807040] [2020-12-23 07:10:48,193 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:10:48,193 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 07:10:48,195 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895918183] [2020-12-23 07:10:48,200 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-23 07:10:48,201 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:10:48,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-23 07:10:48,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 07:10:48,221 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 2 states. [2020-12-23 07:10:48,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:10:48,241 INFO L93 Difference]: Finished difference Result 28 states and 39 transitions. [2020-12-23 07:10:48,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-23 07:10:48,243 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-12-23 07:10:48,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:10:48,254 INFO L225 Difference]: With dead ends: 28 [2020-12-23 07:10:48,254 INFO L226 Difference]: Without dead ends: 12 [2020-12-23 07:10:48,258 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 [2020-12-23 07:10:48,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2020-12-23 07:10:48,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2020-12-23 07:10:48,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-12-23 07:10:48,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2020-12-23 07:10:48,298 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 14 transitions. Word has length 11 [2020-12-23 07:10:48,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:10:48,299 INFO L481 AbstractCegarLoop]: Abstraction has 12 states and 14 transitions. [2020-12-23 07:10:48,299 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-23 07:10:48,299 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 14 transitions. [2020-12-23 07:10:48,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-23 07:10:48,300 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:10:48,300 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:10:48,301 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 07:10:48,301 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:10:48,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:10:48,302 INFO L82 PathProgramCache]: Analyzing trace with hash -26777608, now seen corresponding path program 1 times [2020-12-23 07:10:48,303 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:10:48,303 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010941467] [2020-12-23 07:10:48,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:10:48,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:10:48,971 WARN L197 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 32 [2020-12-23 07:10:48,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:10:48,985 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010941467] [2020-12-23 07:10:48,985 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:10:48,986 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-23 07:10:48,986 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105693110] [2020-12-23 07:10:48,987 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 07:10:48,988 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:10:48,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 07:10:48,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-12-23 07:10:48,989 INFO L87 Difference]: Start difference. First operand 12 states and 14 transitions. Second operand 7 states. [2020-12-23 07:10:49,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:10:49,212 INFO L93 Difference]: Finished difference Result 33 states and 38 transitions. [2020-12-23 07:10:49,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 07:10:49,213 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 11 [2020-12-23 07:10:49,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:10:49,214 INFO L225 Difference]: With dead ends: 33 [2020-12-23 07:10:49,214 INFO L226 Difference]: Without dead ends: 29 [2020-12-23 07:10:49,215 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 [2020-12-23 07:10:49,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-12-23 07:10:49,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 17. [2020-12-23 07:10:49,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-12-23 07:10:49,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 21 transitions. [2020-12-23 07:10:49,223 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 21 transitions. Word has length 11 [2020-12-23 07:10:49,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:10:49,223 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 21 transitions. [2020-12-23 07:10:49,223 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 07:10:49,224 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 21 transitions. [2020-12-23 07:10:49,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-23 07:10:49,224 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:10:49,224 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:10:49,225 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-23 07:10:49,225 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:10:49,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:10:49,226 INFO L82 PathProgramCache]: Analyzing trace with hash 182012736, now seen corresponding path program 1 times [2020-12-23 07:10:49,226 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:10:49,226 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654306286] [2020-12-23 07:10:49,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:10:49,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:10:50,068 WARN L197 SmtUtils]: Spent 378.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 46 [2020-12-23 07:10:50,092 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:10:50,093 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654306286] [2020-12-23 07:10:50,093 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [572937576] [2020-12-23 07:10:50,094 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 [2020-12-23 07:10:50,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:10:50,178 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-23 07:10:50,183 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:10:50,544 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 07:10:50,560 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 07:10:50,592 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:10:50,593 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 07:10:50,593 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-12-23 07:10:50,593 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879276811] [2020-12-23 07:10:50,594 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-12-23 07:10:50,594 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:10:50,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-12-23 07:10:50,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2020-12-23 07:10:50,596 INFO L87 Difference]: Start difference. First operand 17 states and 21 transitions. Second operand 15 states. [2020-12-23 07:10:51,011 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 23 [2020-12-23 07:10:51,193 WARN L197 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 25 [2020-12-23 07:10:51,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:10:51,245 INFO L93 Difference]: Finished difference Result 45 states and 53 transitions. [2020-12-23 07:10:51,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-23 07:10:51,246 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 12 [2020-12-23 07:10:51,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:10:51,247 INFO L225 Difference]: With dead ends: 45 [2020-12-23 07:10:51,247 INFO L226 Difference]: Without dead ends: 41 [2020-12-23 07:10:51,248 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 [2020-12-23 07:10:51,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-12-23 07:10:51,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 18. [2020-12-23 07:10:51,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-12-23 07:10:51,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 23 transitions. [2020-12-23 07:10:51,255 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 23 transitions. Word has length 12 [2020-12-23 07:10:51,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:10:51,255 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 23 transitions. [2020-12-23 07:10:51,255 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-12-23 07:10:51,256 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 23 transitions. [2020-12-23 07:10:51,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-23 07:10:51,256 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:10:51,256 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:10:51,470 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-12-23 07:10:51,471 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:10:51,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:10:51,472 INFO L82 PathProgramCache]: Analyzing trace with hash -828440446, now seen corresponding path program 1 times [2020-12-23 07:10:51,473 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:10:51,473 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035739318] [2020-12-23 07:10:51,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:10:51,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:10:51,543 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:10:51,544 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035739318] [2020-12-23 07:10:51,544 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:10:51,544 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 07:10:51,545 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312663693] [2020-12-23 07:10:51,545 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 07:10:51,545 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:10:51,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 07:10:51,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-23 07:10:51,546 INFO L87 Difference]: Start difference. First operand 18 states and 23 transitions. Second operand 4 states. [2020-12-23 07:10:51,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:10:51,581 INFO L93 Difference]: Finished difference Result 29 states and 36 transitions. [2020-12-23 07:10:51,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 07:10:51,582 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-12-23 07:10:51,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:10:51,582 INFO L225 Difference]: With dead ends: 29 [2020-12-23 07:10:51,583 INFO L226 Difference]: Without dead ends: 18 [2020-12-23 07:10:51,583 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 [2020-12-23 07:10:51,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-12-23 07:10:51,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-12-23 07:10:51,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-12-23 07:10:51,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2020-12-23 07:10:51,588 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 12 [2020-12-23 07:10:51,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:10:51,588 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2020-12-23 07:10:51,588 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 07:10:51,589 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2020-12-23 07:10:51,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-23 07:10:51,589 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:10:51,589 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:10:51,590 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-23 07:10:51,590 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:10:51,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:10:51,590 INFO L82 PathProgramCache]: Analyzing trace with hash -1935421192, now seen corresponding path program 2 times [2020-12-23 07:10:51,591 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:10:51,591 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881460532] [2020-12-23 07:10:51,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:10:51,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:10:51,963 WARN L197 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-12-23 07:10:52,280 WARN L197 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 45 [2020-12-23 07:10:52,305 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:10:52,306 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881460532] [2020-12-23 07:10:52,306 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1443856260] [2020-12-23 07:10:52,306 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 [2020-12-23 07:10:52,382 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 07:10:52,382 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:10:52,383 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 20 conjunts are in the unsatisfiable core [2020-12-23 07:10:52,385 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:10:52,557 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 07:10:52,582 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:10:52,583 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 07:10:52,583 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2020-12-23 07:10:52,583 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878638866] [2020-12-23 07:10:52,584 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-12-23 07:10:52,584 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:10:52,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-12-23 07:10:52,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2020-12-23 07:10:52,585 INFO L87 Difference]: Start difference. First operand 18 states and 22 transitions. Second operand 15 states. [2020-12-23 07:10:53,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:10:53,007 INFO L93 Difference]: Finished difference Result 51 states and 59 transitions. [2020-12-23 07:10:53,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-23 07:10:53,008 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-12-23 07:10:53,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:10:53,011 INFO L225 Difference]: With dead ends: 51 [2020-12-23 07:10:53,011 INFO L226 Difference]: Without dead ends: 47 [2020-12-23 07:10:53,012 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 [2020-12-23 07:10:53,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-12-23 07:10:53,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 19. [2020-12-23 07:10:53,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-12-23 07:10:53,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 24 transitions. [2020-12-23 07:10:53,022 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 24 transitions. Word has length 13 [2020-12-23 07:10:53,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:10:53,023 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 24 transitions. [2020-12-23 07:10:53,023 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-12-23 07:10:53,023 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 24 transitions. [2020-12-23 07:10:53,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-23 07:10:53,023 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:10:53,024 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:10:53,224 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:10:53,225 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:10:53,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:10:53,227 INFO L82 PathProgramCache]: Analyzing trace with hash 1349092922, now seen corresponding path program 1 times [2020-12-23 07:10:53,227 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:10:53,228 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669766923] [2020-12-23 07:10:53,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:10:53,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:10:53,500 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:10:53,501 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669766923] [2020-12-23 07:10:53,501 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [91491308] [2020-12-23 07:10:53,501 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 [2020-12-23 07:10:53,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:10:53,538 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-23 07:10:53,539 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:10:53,723 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-23 07:10:53,724 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:10:53,724 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2020-12-23 07:10:53,724 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957639478] [2020-12-23 07:10:53,725 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 07:10:53,725 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:10:53,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 07:10:53,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-12-23 07:10:53,726 INFO L87 Difference]: Start difference. First operand 19 states and 24 transitions. Second operand 5 states. [2020-12-23 07:10:53,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:10:53,926 INFO L93 Difference]: Finished difference Result 31 states and 37 transitions. [2020-12-23 07:10:53,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 07:10:53,927 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-12-23 07:10:53,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:10:53,928 INFO L225 Difference]: With dead ends: 31 [2020-12-23 07:10:53,928 INFO L226 Difference]: Without dead ends: 24 [2020-12-23 07:10:53,928 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 [2020-12-23 07:10:53,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-12-23 07:10:53,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 20. [2020-12-23 07:10:53,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-12-23 07:10:53,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 25 transitions. [2020-12-23 07:10:53,935 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 25 transitions. Word has length 13 [2020-12-23 07:10:53,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:10:53,935 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 25 transitions. [2020-12-23 07:10:53,936 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 07:10:53,936 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 25 transitions. [2020-12-23 07:10:53,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-23 07:10:53,936 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:10:53,936 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:10:54,147 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:10:54,148 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:10:54,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:10:54,149 INFO L82 PathProgramCache]: Analyzing trace with hash -1350953607, now seen corresponding path program 1 times [2020-12-23 07:10:54,150 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:10:54,150 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927817945] [2020-12-23 07:10:54,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:10:54,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:10:54,272 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:10:54,273 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927817945] [2020-12-23 07:10:54,273 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1739590919] [2020-12-23 07:10:54,273 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 [2020-12-23 07:10:54,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:10:54,313 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 8 conjunts are in the unsatisfiable core [2020-12-23 07:10:54,315 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:10:54,367 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:10:54,368 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 07:10:54,368 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2020-12-23 07:10:54,374 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639031440] [2020-12-23 07:10:54,375 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-23 07:10:54,376 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:10:54,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-23 07:10:54,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-12-23 07:10:54,377 INFO L87 Difference]: Start difference. First operand 20 states and 25 transitions. Second operand 9 states. [2020-12-23 07:10:54,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:10:54,465 INFO L93 Difference]: Finished difference Result 29 states and 35 transitions. [2020-12-23 07:10:54,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 07:10:54,467 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 13 [2020-12-23 07:10:54,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:10:54,467 INFO L225 Difference]: With dead ends: 29 [2020-12-23 07:10:54,467 INFO L226 Difference]: Without dead ends: 20 [2020-12-23 07:10:54,469 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 [2020-12-23 07:10:54,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-12-23 07:10:54,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2020-12-23 07:10:54,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-12-23 07:10:54,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions. [2020-12-23 07:10:54,486 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 24 transitions. Word has length 13 [2020-12-23 07:10:54,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:10:54,486 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 24 transitions. [2020-12-23 07:10:54,486 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-23 07:10:54,486 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions. [2020-12-23 07:10:54,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-23 07:10:54,487 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:10:54,487 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:10:54,700 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:10:54,701 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:10:54,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:10:54,702 INFO L82 PathProgramCache]: Analyzing trace with hash 1143603776, now seen corresponding path program 3 times [2020-12-23 07:10:54,702 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:10:54,703 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869912659] [2020-12-23 07:10:54,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:10:54,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:10:57,011 WARN L197 SmtUtils]: Spent 1.93 s on a formula simplification. DAG size of input: 66 DAG size of output: 48 [2020-12-23 07:10:57,038 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:10:57,039 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869912659] [2020-12-23 07:10:57,039 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1151894779] [2020-12-23 07:10:57,039 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 [2020-12-23 07:11:13,614 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-12-23 07:11:13,615 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:11:13,619 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 20 conjunts are in the unsatisfiable core [2020-12-23 07:11:13,620 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:11:14,368 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-23 07:11:14,532 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 15 disjuncts [2020-12-23 07:11:16,171 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 07:11:17,661 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 07:11:19,227 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 07:11:19,917 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-23 07:11:19,917 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 07:11:19,917 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2020-12-23 07:11:19,918 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727674587] [2020-12-23 07:11:19,918 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-12-23 07:11:19,918 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:11:19,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-12-23 07:11:19,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2020-12-23 07:11:19,919 INFO L87 Difference]: Start difference. First operand 20 states and 24 transitions. Second operand 17 states. [2020-12-23 07:11:20,791 WARN L197 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 26 [2020-12-23 07:11:21,279 WARN L197 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 29 [2020-12-23 07:11:22,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:11:22,462 INFO L93 Difference]: Finished difference Result 45 states and 52 transitions. [2020-12-23 07:11:22,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-23 07:11:22,463 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-12-23 07:11:22,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:11:22,464 INFO L225 Difference]: With dead ends: 45 [2020-12-23 07:11:22,464 INFO L226 Difference]: Without dead ends: 35 [2020-12-23 07:11:22,464 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 6 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=148, Invalid=554, Unknown=0, NotChecked=0, Total=702 [2020-12-23 07:11:22,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-12-23 07:11:22,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 15. [2020-12-23 07:11:22,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-12-23 07:11:22,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2020-12-23 07:11:22,469 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 14 [2020-12-23 07:11:22,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:11:22,469 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2020-12-23 07:11:22,469 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-12-23 07:11:22,469 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2020-12-23 07:11:22,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-23 07:11:22,470 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:11:22,470 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:11:22,674 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:11:22,675 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:11:22,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:11:22,676 INFO L82 PathProgramCache]: Analyzing trace with hash 1728071361, now seen corresponding path program 2 times [2020-12-23 07:11:22,676 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:11:22,676 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793217178] [2020-12-23 07:11:22,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:11:22,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:11:22,862 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:11:22,862 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793217178] [2020-12-23 07:11:22,862 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1639578998] [2020-12-23 07:11:22,863 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 [2020-12-23 07:11:22,955 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 07:11:22,955 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:11:22,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 10 conjunts are in the unsatisfiable core [2020-12-23 07:11:22,957 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:11:23,008 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 07:11:24,502 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:11:24,502 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 07:11:24,502 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2020-12-23 07:11:24,503 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351799344] [2020-12-23 07:11:24,504 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-23 07:11:24,504 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:11:24,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-23 07:11:24,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-12-23 07:11:24,505 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand 10 states. [2020-12-23 07:11:24,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:11:24,655 INFO L93 Difference]: Finished difference Result 25 states and 29 transitions. [2020-12-23 07:11:24,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 07:11:24,655 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2020-12-23 07:11:24,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:11:24,656 INFO L225 Difference]: With dead ends: 25 [2020-12-23 07:11:24,656 INFO L226 Difference]: Without dead ends: 16 [2020-12-23 07:11:24,657 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2020-12-23 07:11:24,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-12-23 07:11:24,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-12-23 07:11:24,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-12-23 07:11:24,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2020-12-23 07:11:24,662 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 14 [2020-12-23 07:11:24,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:11:24,662 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2020-12-23 07:11:24,662 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-23 07:11:24,663 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2020-12-23 07:11:24,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-23 07:11:24,663 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:11:24,664 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:11:24,869 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:11:24,870 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:11:24,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:11:24,871 INFO L82 PathProgramCache]: Analyzing trace with hash -1606402439, now seen corresponding path program 3 times [2020-12-23 07:11:24,871 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:11:24,871 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738783163] [2020-12-23 07:11:24,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:11:24,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:11:25,066 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:11:25,066 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738783163] [2020-12-23 07:11:25,067 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [572939510] [2020-12-23 07:11:25,067 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 [2020-12-23 07:11:25,160 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-12-23 07:11:25,161 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:11:25,162 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 13 conjunts are in the unsatisfiable core [2020-12-23 07:11:25,163 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:11:25,322 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-23 07:11:25,328 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-23 07:11:25,332 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 07:11:25,350 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-23 07:11:25,351 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:11:25,351 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 12 [2020-12-23 07:11:25,351 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566059504] [2020-12-23 07:11:25,352 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 07:11:25,352 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:11:25,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 07:11:25,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2020-12-23 07:11:25,353 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand 6 states. [2020-12-23 07:11:25,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:11:25,373 INFO L93 Difference]: Finished difference Result 16 states and 18 transitions. [2020-12-23 07:11:25,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 07:11:25,374 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-12-23 07:11:25,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:11:25,374 INFO L225 Difference]: With dead ends: 16 [2020-12-23 07:11:25,374 INFO L226 Difference]: Without dead ends: 0 [2020-12-23 07:11:25,375 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 [2020-12-23 07:11:25,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-23 07:11:25,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-23 07:11:25,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-23 07:11:25,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-23 07:11:25,376 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2020-12-23 07:11:25,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:11:25,376 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-23 07:11:25,376 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 07:11:25,376 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-23 07:11:25,376 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-23 07:11:25,584 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-12-23 07:11:25,588 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-23 07:11:26,284 WARN L197 SmtUtils]: Spent 596.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 41 [2020-12-23 07:11:26,635 WARN L197 SmtUtils]: Spent 348.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 35 [2020-12-23 07:11:26,716 INFO L189 CegarLoopUtils]: For program point L19(line 19) no Hoare annotation was computed. [2020-12-23 07:11:26,716 INFO L189 CegarLoopUtils]: For program point L-1(line -1) no Hoare annotation was computed. [2020-12-23 07:11:26,717 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-23 07:11:26,717 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-12-23 07:11:26,717 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 10) no Hoare annotation was computed. [2020-12-23 07:11:26,717 INFO L192 CegarLoopUtils]: At program point L33(lines 16 34) the Hoare annotation is: true [2020-12-23 07:11:26,717 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-23 07:11:26,717 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)))) [2020-12-23 07:11:26,717 INFO L189 CegarLoopUtils]: For program point L29-3(lines 29 31) no Hoare annotation was computed. [2020-12-23 07:11:26,717 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)))) [2020-12-23 07:11:26,718 INFO L189 CegarLoopUtils]: For program point L25-3(lines 25 27) no Hoare annotation was computed. [2020-12-23 07:11:26,718 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)))) [2020-12-23 07:11:26,718 INFO L189 CegarLoopUtils]: For program point L21-3(lines 21 23) no Hoare annotation was computed. [2020-12-23 07:11:26,718 INFO L189 CegarLoopUtils]: For program point L9(lines 9 11) no Hoare annotation was computed. [2020-12-23 07:11:26,718 INFO L192 CegarLoopUtils]: At program point L9-2(lines 8 13) the Hoare annotation is: true [2020-12-23 07:11:26,718 INFO L189 CegarLoopUtils]: For program point L10(line 10) no Hoare annotation was computed. [2020-12-23 07:11:26,747 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.12 07:11:26 BoogieIcfgContainer [2020-12-23 07:11:26,747 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-23 07:11:26,749 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-23 07:11:26,749 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-23 07:11:26,749 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-23 07:11:26,750 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 07:10:47" (3/4) ... [2020-12-23 07:11:26,753 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-23 07:11:26,763 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2020-12-23 07:11:26,764 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-23 07:11:26,764 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-23 07:11:26,764 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-23 07:11:26,806 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/loops-crafted-1/sum_by_3.c-witness.graphml [2020-12-23 07:11:26,807 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-23 07:11:26,808 INFO L168 Benchmark]: Toolchain (without parser) took 39732.26 ms. Allocated memory was 173.0 MB in the beginning and 310.4 MB in the end (delta: 137.4 MB). Free memory was 147.9 MB in the beginning and 120.7 MB in the end (delta: 27.2 MB). Peak memory consumption was 164.9 MB. Max. memory is 8.0 GB. [2020-12-23 07:11:26,808 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 173.0 MB. Free memory is still 148.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 07:11:26,809 INFO L168 Benchmark]: CACSL2BoogieTranslator took 249.20 ms. Allocated memory is still 173.0 MB. Free memory was 147.9 MB in the beginning and 138.2 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-12-23 07:11:26,809 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.60 ms. Allocated memory is still 173.0 MB. Free memory was 138.2 MB in the beginning and 136.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-23 07:11:26,810 INFO L168 Benchmark]: Boogie Preprocessor took 25.36 ms. Allocated memory is still 173.0 MB. Free memory was 136.8 MB in the beginning and 135.7 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-23 07:11:26,811 INFO L168 Benchmark]: RCFGBuilder took 409.78 ms. Allocated memory is still 173.0 MB. Free memory was 135.7 MB in the beginning and 122.4 MB in the end (delta: 13.3 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2020-12-23 07:11:26,811 INFO L168 Benchmark]: TraceAbstraction took 38943.83 ms. Allocated memory was 173.0 MB in the beginning and 310.4 MB in the end (delta: 137.4 MB). Free memory was 122.1 MB in the beginning and 123.3 MB in the end (delta: -1.2 MB). Peak memory consumption was 137.7 MB. Max. memory is 8.0 GB. [2020-12-23 07:11:26,812 INFO L168 Benchmark]: Witness Printer took 57.98 ms. Allocated memory is still 310.4 MB. Free memory was 123.3 MB in the beginning and 120.7 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-23 07:11:26,815 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 173.0 MB. Free memory is still 148.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 249.20 ms. Allocated memory is still 173.0 MB. Free memory was 147.9 MB in the beginning and 138.2 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 36.60 ms. Allocated memory is still 173.0 MB. Free memory was 138.2 MB in the beginning and 136.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 25.36 ms. Allocated memory is still 173.0 MB. Free memory was 136.8 MB in the beginning and 135.7 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 409.78 ms. Allocated memory is still 173.0 MB. Free memory was 135.7 MB in the beginning and 122.4 MB in the end (delta: 13.3 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 38943.83 ms. Allocated memory was 173.0 MB in the beginning and 310.4 MB in the end (delta: 137.4 MB). Free memory was 122.1 MB in the beginning and 123.3 MB in the end (delta: -1.2 MB). Peak memory consumption was 137.7 MB. Max. memory is 8.0 GB. * Witness Printer took 57.98 ms. Allocated memory is still 310.4 MB. Free memory was 123.3 MB in the beginning and 120.7 MB in the end (delta: 2.6 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: 37.6s, 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, 7.6s 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, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 1320 FormulaSimplificationTreeSizeReductionInter, 1.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 17.1s SatisfiabilityAnalysisTime, 13.9s 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...