/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/nla-digbench-scaling/geo1-ll_valuebound2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 07:44:58,081 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 07:44:58,085 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 07:44:58,140 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 07:44:58,140 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 07:44:58,144 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 07:44:58,148 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 07:44:58,154 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 07:44:58,157 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 07:44:58,163 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 07:44:58,166 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 07:44:58,168 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 07:44:58,168 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 07:44:58,171 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 07:44:58,173 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 07:44:58,174 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 07:44:58,175 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 07:44:58,178 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 07:44:58,185 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 07:44:58,192 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 07:44:58,194 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 07:44:58,195 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 07:44:58,197 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 07:44:58,199 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 07:44:58,211 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-23 07:44:58,215 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-23 07:44:58,216 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-23 07:44:58,217 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-23 07:44:58,218 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-23 07:44:58,219 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-23 07:44:58,219 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-23 07:44:58,220 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-23 07:44:58,227 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-23 07:44:58,227 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 07:44:58,228 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 07:44:58,229 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 07:44:58,229 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 07:44:58,270 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 07:44:58,270 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 07:44:58,274 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 07:44:58,274 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 07:44:58,274 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 07:44:58,274 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 07:44:58,275 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 07:44:58,275 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 07:44:58,275 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 07:44:58,275 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 07:44:58,276 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 07:44:58,277 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 07:44:58,277 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 07:44:58,277 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 07:44:58,277 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 07:44:58,278 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 07:44:58,278 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 07:44:58,278 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 07:44:58,278 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 07:44:58,278 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 07:44:58,279 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 07:44:58,279 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 07:44:58,279 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 07:44:58,279 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 07:44:58,279 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 07:44:58,280 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 07:44:58,654 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 07:44:58,686 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 07:44:58,689 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 07:44:58,690 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 07:44:58,691 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 07:44:58,692 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/geo1-ll_valuebound2.c [2020-12-23 07:44:58,777 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/afa8bdad1/97bad0e460e741d2a12acb14bbdcf856/FLAG0037b0239 [2020-12-23 07:44:59,349 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 07:44:59,350 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/geo1-ll_valuebound2.c [2020-12-23 07:44:59,362 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/afa8bdad1/97bad0e460e741d2a12acb14bbdcf856/FLAG0037b0239 [2020-12-23 07:44:59,377 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/afa8bdad1/97bad0e460e741d2a12acb14bbdcf856 [2020-12-23 07:44:59,380 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 07:44:59,382 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 07:44:59,384 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 07:44:59,384 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 07:44:59,388 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 07:44:59,389 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 07:44:59" (1/1) ... [2020-12-23 07:44:59,390 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44fb2f10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:44:59, skipping insertion in model container [2020-12-23 07:44:59,390 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 07:44:59" (1/1) ... [2020-12-23 07:44:59,399 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 07:44:59,415 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-23 07:44:59,580 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/geo1-ll_valuebound2.c[546,559] left hand side expression in assignment: lhs: VariableLHS[~z~0,] left hand side expression in assignment: lhs: VariableLHS[~k~0,] left hand side expression in assignment: lhs: VariableLHS[~x~0,] left hand side expression in assignment: lhs: VariableLHS[~y~0,] left hand side expression in assignment: lhs: VariableLHS[~c~0,] left hand side expression in assignment: lhs: VariableLHS[~c~0,] left hand side expression in assignment: lhs: VariableLHS[~x~0,] left hand side expression in assignment: lhs: VariableLHS[~y~0,] left hand side expression in assignment: lhs: VariableLHS[~x~0,] [2020-12-23 07:44:59,598 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 07:44:59,607 INFO L203 MainTranslator]: Completed pre-run [2020-12-23 07:44:59,621 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/geo1-ll_valuebound2.c[546,559] left hand side expression in assignment: lhs: VariableLHS[~z~0,] left hand side expression in assignment: lhs: VariableLHS[~k~0,] left hand side expression in assignment: lhs: VariableLHS[~x~0,] left hand side expression in assignment: lhs: VariableLHS[~y~0,] left hand side expression in assignment: lhs: VariableLHS[~c~0,] left hand side expression in assignment: lhs: VariableLHS[~c~0,] left hand side expression in assignment: lhs: VariableLHS[~x~0,] left hand side expression in assignment: lhs: VariableLHS[~y~0,] left hand side expression in assignment: lhs: VariableLHS[~x~0,] [2020-12-23 07:44:59,628 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 07:44:59,644 INFO L208 MainTranslator]: Completed translation [2020-12-23 07:44:59,645 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:44:59 WrapperNode [2020-12-23 07:44:59,645 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 07:44:59,646 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 07:44:59,646 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 07:44:59,647 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 07:44:59,656 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:44:59" (1/1) ... [2020-12-23 07:44:59,664 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:44:59" (1/1) ... [2020-12-23 07:44:59,685 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 07:44:59,686 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 07:44:59,686 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 07:44:59,686 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 07:44:59,696 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:44:59" (1/1) ... [2020-12-23 07:44:59,697 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:44:59" (1/1) ... [2020-12-23 07:44:59,698 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:44:59" (1/1) ... [2020-12-23 07:44:59,698 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:44:59" (1/1) ... [2020-12-23 07:44:59,702 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:44:59" (1/1) ... [2020-12-23 07:44:59,707 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:44:59" (1/1) ... [2020-12-23 07:44:59,708 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:44:59" (1/1) ... [2020-12-23 07:44:59,710 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 07:44:59,711 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 07:44:59,711 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 07:44:59,711 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 07:44:59,712 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:44:59" (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 07:44:59,813 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 07:44:59,813 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 07:44:59,813 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 07:44:59,813 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 07:45:00,204 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 07:45:00,205 INFO L299 CfgBuilder]: Removed 17 assume(true) statements. [2020-12-23 07:45:00,210 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 07:45:00 BoogieIcfgContainer [2020-12-23 07:45:00,210 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 07:45:00,212 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 07:45:00,212 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 07:45:00,222 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 07:45:00,222 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 07:44:59" (1/3) ... [2020-12-23 07:45:00,223 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13a1730f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 07:45:00, skipping insertion in model container [2020-12-23 07:45:00,223 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:44:59" (2/3) ... [2020-12-23 07:45:00,223 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13a1730f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 07:45:00, skipping insertion in model container [2020-12-23 07:45:00,224 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 07:45:00" (3/3) ... [2020-12-23 07:45:00,225 INFO L111 eAbstractionObserver]: Analyzing ICFG geo1-ll_valuebound2.c [2020-12-23 07:45:00,246 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 07:45:00,250 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-12-23 07:45:00,269 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-12-23 07:45:00,322 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 07:45:00,323 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 07:45:00,323 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 07:45:00,323 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 07:45:00,323 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 07:45:00,323 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 07:45:00,324 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 07:45:00,324 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 07:45:00,341 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2020-12-23 07:45:00,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-23 07:45:00,350 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:45:00,351 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:45:00,351 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:45:00,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:45:00,356 INFO L82 PathProgramCache]: Analyzing trace with hash -144177098, now seen corresponding path program 1 times [2020-12-23 07:45:00,366 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:45:00,366 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110057907] [2020-12-23 07:45:00,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:45:00,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:45:00,527 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 07:45:00,528 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110057907] [2020-12-23 07:45:00,529 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:45:00,529 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 07:45:00,530 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020547282] [2020-12-23 07:45:00,535 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-23 07:45:00,536 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:45:00,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-23 07:45:00,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 07:45:00,553 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 2 states. [2020-12-23 07:45:00,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:45:00,573 INFO L93 Difference]: Finished difference Result 43 states and 58 transitions. [2020-12-23 07:45:00,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-23 07:45:00,574 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2020-12-23 07:45:00,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:45:00,583 INFO L225 Difference]: With dead ends: 43 [2020-12-23 07:45:00,584 INFO L226 Difference]: Without dead ends: 19 [2020-12-23 07:45:00,587 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 07:45:00,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-12-23 07:45:00,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2020-12-23 07:45:00,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-12-23 07:45:00,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2020-12-23 07:45:00,624 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 13 [2020-12-23 07:45:00,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:45:00,624 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2020-12-23 07:45:00,624 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-23 07:45:00,624 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2020-12-23 07:45:00,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-23 07:45:00,625 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:45:00,625 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:45:00,626 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 07:45:00,626 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:45:00,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:45:00,627 INFO L82 PathProgramCache]: Analyzing trace with hash -1281167042, now seen corresponding path program 1 times [2020-12-23 07:45:00,627 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:45:00,627 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761573084] [2020-12-23 07:45:00,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:45:00,651 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:45:00,652 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1289103785] [2020-12-23 07:45:00,652 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 07:45:00,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:45:00,756 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 20 conjunts are in the unsatisfiable core [2020-12-23 07:45:00,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:45:01,083 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 07:45:01,084 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761573084] [2020-12-23 07:45:01,084 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:45:01,084 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1289103785] [2020-12-23 07:45:01,084 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:45:01,085 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-23 07:45:01,085 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509695879] [2020-12-23 07:45:01,086 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 07:45:01,087 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:45:01,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 07:45:01,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-12-23 07:45:01,088 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 8 states. [2020-12-23 07:45:01,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:45:01,409 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2020-12-23 07:45:01,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-23 07:45:01,410 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 13 [2020-12-23 07:45:01,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:45:01,411 INFO L225 Difference]: With dead ends: 29 [2020-12-23 07:45:01,411 INFO L226 Difference]: Without dead ends: 23 [2020-12-23 07:45:01,412 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-12-23 07:45:01,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-12-23 07:45:01,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2020-12-23 07:45:01,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-12-23 07:45:01,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2020-12-23 07:45:01,418 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 13 [2020-12-23 07:45:01,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:45:01,418 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2020-12-23 07:45:01,419 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 07:45:01,419 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2020-12-23 07:45:01,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-23 07:45:01,419 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:45:01,420 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:45:01,633 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-12-23 07:45:01,634 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:45:01,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:45:01,636 INFO L82 PathProgramCache]: Analyzing trace with hash 2131965670, now seen corresponding path program 1 times [2020-12-23 07:45:01,637 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:45:01,637 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627026477] [2020-12-23 07:45:01,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:45:01,656 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:45:01,657 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1305121092] [2020-12-23 07:45:01,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 07:45:01,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:45:01,737 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 38 conjunts are in the unsatisfiable core [2020-12-23 07:45:01,740 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:45:02,256 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:45:02,257 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627026477] [2020-12-23 07:45:02,257 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:45:02,258 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1305121092] [2020-12-23 07:45:02,258 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:45:02,258 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-12-23 07:45:02,258 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473621264] [2020-12-23 07:45:02,259 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-23 07:45:02,259 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:45:02,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-23 07:45:02,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-12-23 07:45:02,261 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand 12 states. [2020-12-23 07:45:02,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:45:02,991 INFO L93 Difference]: Finished difference Result 32 states and 32 transitions. [2020-12-23 07:45:02,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-23 07:45:02,992 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 16 [2020-12-23 07:45:02,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:45:02,995 INFO L225 Difference]: With dead ends: 32 [2020-12-23 07:45:02,995 INFO L226 Difference]: Without dead ends: 26 [2020-12-23 07:45:02,997 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=112, Invalid=230, Unknown=0, NotChecked=0, Total=342 [2020-12-23 07:45:02,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-12-23 07:45:03,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2020-12-23 07:45:03,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-12-23 07:45:03,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2020-12-23 07:45:03,010 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 16 [2020-12-23 07:45:03,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:45:03,011 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2020-12-23 07:45:03,011 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-23 07:45:03,011 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2020-12-23 07:45:03,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-23 07:45:03,012 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:45:03,012 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:45:03,225 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:45:03,226 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:45:03,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:45:03,227 INFO L82 PathProgramCache]: Analyzing trace with hash -582143938, now seen corresponding path program 2 times [2020-12-23 07:45:03,228 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:45:03,228 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699241493] [2020-12-23 07:45:03,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:45:03,246 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:45:03,247 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1978989413] [2020-12-23 07:45:03,247 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 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 07:45:03,332 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 07:45:03,332 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:45:03,334 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 8 conjunts are in the unsatisfiable core [2020-12-23 07:45:03,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:45:03,481 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:45:03,481 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699241493] [2020-12-23 07:45:03,481 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:45:03,481 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1978989413] [2020-12-23 07:45:03,482 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:45:03,482 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-23 07:45:03,482 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114800683] [2020-12-23 07:45:03,483 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 07:45:03,483 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:45:03,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 07:45:03,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-23 07:45:03,484 INFO L87 Difference]: Start difference. First operand 25 states and 25 transitions. Second operand 6 states. [2020-12-23 07:45:03,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:45:03,549 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2020-12-23 07:45:03,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 07:45:03,549 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2020-12-23 07:45:03,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:45:03,550 INFO L225 Difference]: With dead ends: 25 [2020-12-23 07:45:03,550 INFO L226 Difference]: Without dead ends: 0 [2020-12-23 07:45:03,551 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-12-23 07:45:03,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-23 07:45:03,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-23 07:45:03,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-23 07:45:03,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-23 07:45:03,552 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2020-12-23 07:45:03,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:45:03,552 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-23 07:45:03,552 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 07:45:03,553 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-23 07:45:03,553 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-23 07:45:03,768 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:45:03,773 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-23 07:45:04,041 WARN L197 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 26 [2020-12-23 07:45:04,210 WARN L197 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 26 [2020-12-23 07:45:04,214 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 18) no Hoare annotation was computed. [2020-12-23 07:45:04,216 INFO L185 CegarLoopUtils]: At program point L36-2(lines 36 46) the Hoare annotation is: (let ((.cse0 (<= 1 ULTIMATE.start_main_~k~0)) (.cse1 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse2 (<= ULTIMATE.start_main_~k~0 2)) (.cse3 (<= ULTIMATE.start_main_~z~0 2)) (.cse4 (<= 1 ULTIMATE.start_main_~z~0))) (or (and (= ULTIMATE.start_main_~x~0 1) .cse0 (= ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~y~0) (<= 1 ULTIMATE.start_main_~c~0) .cse1 .cse2 .cse3 .cse4) (and (<= 2 ULTIMATE.start_main_~c~0) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse0 (= (* ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~z~0) ULTIMATE.start_main_~y~0) .cse1 .cse2 .cse3 (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~z~0 1)) .cse4))) [2020-12-23 07:45:04,216 INFO L189 CegarLoopUtils]: For program point L36-3(lines 36 46) no Hoare annotation was computed. [2020-12-23 07:45:04,216 INFO L189 CegarLoopUtils]: For program point L-1(line -1) no Hoare annotation was computed. [2020-12-23 07:45:04,216 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-23 07:45:04,216 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-12-23 07:45:04,216 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 18) no Hoare annotation was computed. [2020-12-23 07:45:04,217 INFO L189 CegarLoopUtils]: For program point L16(lines 16 19) no Hoare annotation was computed. [2020-12-23 07:45:04,217 INFO L185 CegarLoopUtils]: At program point L16-2(lines 39 40) the Hoare annotation is: (let ((.cse0 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse1 (<= 1 ULTIMATE.start_main_~k~0)) (.cse2 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse3 (<= ULTIMATE.start_main_~k~0 2)) (.cse4 (<= ULTIMATE.start_main_~z~0 2)) (.cse5 (<= 1 ULTIMATE.start_main_~z~0))) (or (and (= ULTIMATE.start_main_~x~0 1) .cse0 .cse1 (= ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~y~0) (<= 1 ULTIMATE.start_main_~c~0) .cse2 .cse3 .cse4 .cse5) (and (<= 2 ULTIMATE.start_main_~c~0) .cse0 .cse1 (= (* ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~z~0) ULTIMATE.start_main_~y~0) .cse2 .cse3 .cse4 (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~z~0 1)) .cse5))) [2020-12-23 07:45:04,218 INFO L189 CegarLoopUtils]: For program point L16-3(lines 16 19) no Hoare annotation was computed. [2020-12-23 07:45:04,218 INFO L189 CegarLoopUtils]: For program point L12(lines 12 14) no Hoare annotation was computed. [2020-12-23 07:45:04,218 INFO L189 CegarLoopUtils]: For program point L12-1(lines 12 14) no Hoare annotation was computed. [2020-12-23 07:45:04,218 INFO L192 CegarLoopUtils]: At program point L16-5(lines 15 21) the Hoare annotation is: true [2020-12-23 07:45:04,219 INFO L189 CegarLoopUtils]: For program point L12-2(lines 12 14) no Hoare annotation was computed. [2020-12-23 07:45:04,219 INFO L189 CegarLoopUtils]: For program point L12-3(lines 12 14) no Hoare annotation was computed. [2020-12-23 07:45:04,219 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-23 07:45:04,219 INFO L189 CegarLoopUtils]: For program point L17(lines 17 18) no Hoare annotation was computed. [2020-12-23 07:45:04,219 INFO L189 CegarLoopUtils]: For program point L17-1(lines 17 18) no Hoare annotation was computed. [2020-12-23 07:45:04,220 INFO L189 CegarLoopUtils]: For program point L13(line 13) no Hoare annotation was computed. [2020-12-23 07:45:04,220 INFO L189 CegarLoopUtils]: For program point L13-2(line 13) no Hoare annotation was computed. [2020-12-23 07:45:04,220 INFO L189 CegarLoopUtils]: For program point L13-4(line 13) no Hoare annotation was computed. [2020-12-23 07:45:04,220 INFO L189 CegarLoopUtils]: For program point L13-6(line 13) no Hoare annotation was computed. [2020-12-23 07:45:04,220 INFO L192 CegarLoopUtils]: At program point L51(lines 22 52) the Hoare annotation is: true [2020-12-23 07:45:04,249 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.12 07:45:04 BoogieIcfgContainer [2020-12-23 07:45:04,249 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-23 07:45:04,250 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-23 07:45:04,250 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-23 07:45:04,250 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-23 07:45:04,251 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 07:45:00" (3/4) ... [2020-12-23 07:45:04,254 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-23 07:45:04,265 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2020-12-23 07:45:04,265 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-23 07:45:04,265 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-23 07:45:04,266 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-23 07:45:04,314 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/nla-digbench-scaling/geo1-ll_valuebound2.c-witness.graphml [2020-12-23 07:45:04,314 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-23 07:45:04,316 INFO L168 Benchmark]: Toolchain (without parser) took 4932.92 ms. Allocated memory was 156.2 MB in the beginning and 196.1 MB in the end (delta: 39.8 MB). Free memory was 130.6 MB in the beginning and 144.2 MB in the end (delta: -13.7 MB). Peak memory consumption was 26.5 MB. Max. memory is 8.0 GB. [2020-12-23 07:45:04,316 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 156.2 MB. Free memory is still 129.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 07:45:04,317 INFO L168 Benchmark]: CACSL2BoogieTranslator took 261.33 ms. Allocated memory is still 156.2 MB. Free memory was 130.2 MB in the beginning and 120.5 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-12-23 07:45:04,318 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.97 ms. Allocated memory is still 156.2 MB. Free memory was 120.5 MB in the beginning and 119.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-23 07:45:04,318 INFO L168 Benchmark]: Boogie Preprocessor took 24.10 ms. Allocated memory is still 156.2 MB. Free memory was 119.0 MB in the beginning and 118.0 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-23 07:45:04,319 INFO L168 Benchmark]: RCFGBuilder took 499.37 ms. Allocated memory is still 156.2 MB. Free memory was 117.8 MB in the beginning and 104.3 MB in the end (delta: 13.5 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2020-12-23 07:45:04,320 INFO L168 Benchmark]: TraceAbstraction took 4037.32 ms. Allocated memory was 156.2 MB in the beginning and 196.1 MB in the end (delta: 39.8 MB). Free memory was 103.9 MB in the beginning and 147.4 MB in the end (delta: -43.5 MB). Peak memory consumption was 79.2 MB. Max. memory is 8.0 GB. [2020-12-23 07:45:04,321 INFO L168 Benchmark]: Witness Printer took 64.39 ms. Allocated memory is still 196.1 MB. Free memory was 147.4 MB in the beginning and 144.2 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-23 07:45:04,325 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 156.2 MB. Free memory is still 129.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 261.33 ms. Allocated memory is still 156.2 MB. Free memory was 130.2 MB in the beginning and 120.5 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 38.97 ms. Allocated memory is still 156.2 MB. Free memory was 120.5 MB in the beginning and 119.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 24.10 ms. Allocated memory is still 156.2 MB. Free memory was 119.0 MB in the beginning and 118.0 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 499.37 ms. Allocated memory is still 156.2 MB. Free memory was 117.8 MB in the beginning and 104.3 MB in the end (delta: 13.5 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 4037.32 ms. Allocated memory was 156.2 MB in the beginning and 196.1 MB in the end (delta: 39.8 MB). Free memory was 103.9 MB in the beginning and 147.4 MB in the end (delta: -43.5 MB). Peak memory consumption was 79.2 MB. Max. memory is 8.0 GB. * Witness Printer took 64.39 ms. Allocated memory is still 196.1 MB. Free memory was 147.4 MB in the beginning and 144.2 MB in the end (delta: 3.1 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: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 18]: 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 2 specifications checked. All of them hold - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: (((((((x == 1 && 1 <= k) && z == y) && 1 <= c) && cond == 1) && k <= 2) && z <= 2) && 1 <= z) || ((((((((2 <= c && 1 == cond) && 1 <= k) && z * z == y) && cond == 1) && k <= 2) && z <= 2) && x == z + 1) && 1 <= z) - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 39]: Loop Invariant Derived loop invariant: ((((((((x == 1 && 1 == cond) && 1 <= k) && z == y) && 1 <= c) && cond == 1) && k <= 2) && z <= 2) && 1 <= z) || ((((((((2 <= c && 1 == cond) && 1 <= k) && z * z == y) && cond == 1) && k <= 2) && z <= 2) && x == z + 1) && 1 <= z) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 23 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.4s, OverallIterations: 4, TraceHistogramMax: 3, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 55 SDtfs, 123 SDslu, 69 SDs, 0 SdLazy, 129 SolverSat, 46 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 59 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred in iteration=3, 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, 4 MinimizatonAttempts, 2 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 10 NumberOfFragments, 121 HoareAnnotationTreeSize, 4 FomulaSimplifications, 18 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 12 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 61 NumberOfCodeBlocks, 61 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 57 ConstructedInterpolants, 0 QuantifiedInterpolants, 6396 SizeOfPredicates, 24 NumberOfNonLiveVariables, 252 ConjunctsInSsa, 66 ConjunctsInUnsatCore, 4 InterpolantComputations, 3 PerfectInterpolantSequences, 7/9 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...