/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/bresenham-ll_valuebound1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-06 17:16:20,410 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-06 17:16:20,413 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-06 17:16:20,448 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-06 17:16:20,448 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-06 17:16:20,450 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-06 17:16:20,452 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-06 17:16:20,454 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-06 17:16:20,476 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-06 17:16:20,478 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-06 17:16:20,479 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-06 17:16:20,480 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-06 17:16:20,481 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-06 17:16:20,482 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-06 17:16:20,484 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-06 17:16:20,486 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-06 17:16:20,487 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-06 17:16:20,493 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-06 17:16:20,508 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-06 17:16:20,512 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-06 17:16:20,518 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-06 17:16:20,521 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-06 17:16:20,523 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-06 17:16:20,526 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-06 17:16:20,533 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-06 17:16:20,556 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-06 17:16:20,557 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-06 17:16:20,558 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-06 17:16:20,559 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-01-06 17:16:20,613 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-06 17:16:20,613 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-06 17:16:20,615 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-06 17:16:20,615 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-06 17:16:20,615 INFO L138 SettingsManager]: * Use SBE=true [2021-01-06 17:16:20,616 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-06 17:16:20,616 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-06 17:16:20,616 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-06 17:16:20,616 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-06 17:16:20,617 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-06 17:16:20,618 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-06 17:16:20,618 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-06 17:16:20,618 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-06 17:16:20,619 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-06 17:16:20,619 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-06 17:16:20,619 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-06 17:16:20,619 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-06 17:16:20,620 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 17:16:20,620 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-06 17:16:20,620 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-06 17:16:20,621 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-06 17:16:20,621 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-06 17:16:20,621 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-06 17:16:20,621 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-06 17:16:20,622 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-06 17:16:20,622 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-06 17:16:21,040 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-06 17:16:21,081 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-06 17:16:21,084 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-06 17:16:21,085 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-06 17:16:21,086 INFO L275 PluginConnector]: CDTParser initialized [2021-01-06 17:16:21,087 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_valuebound1.c [2021-01-06 17:16:21,159 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/4ca4059dd/af8c40b85e304ee8ad6dcf90c36eaa61/FLAG5710abed0 [2021-01-06 17:16:21,778 INFO L306 CDTParser]: Found 1 translation units. [2021-01-06 17:16:21,779 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_valuebound1.c [2021-01-06 17:16:21,788 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/4ca4059dd/af8c40b85e304ee8ad6dcf90c36eaa61/FLAG5710abed0 [2021-01-06 17:16:22,120 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/4ca4059dd/af8c40b85e304ee8ad6dcf90c36eaa61 [2021-01-06 17:16:22,124 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-06 17:16:22,126 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-06 17:16:22,127 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-06 17:16:22,128 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-06 17:16:22,133 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-06 17:16:22,134 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 05:16:22" (1/1) ... [2021-01-06 17:16:22,136 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25e13138 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:16:22, skipping insertion in model container [2021-01-06 17:16:22,136 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 05:16:22" (1/1) ... [2021-01-06 17:16:22,146 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-06 17:16:22,168 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-01-06 17:16:22,380 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/bresenham-ll_valuebound1.c[597,610] 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[~v~0,] left hand side expression in assignment: lhs: VariableLHS[~y~0,] left hand side expression in assignment: lhs: VariableLHS[~x~0,] left hand side expression in assignment: lhs: VariableLHS[~yx~0,] left hand side expression in assignment: lhs: VariableLHS[~xy~0,] left hand side expression in assignment: lhs: VariableLHS[~v~0,] left hand side expression in assignment: lhs: VariableLHS[~v~0,] left hand side expression in assignment: lhs: VariableLHS[~xy~0,] left hand side expression in assignment: lhs: VariableLHS[~yx~0,] [2021-01-06 17:16:22,426 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 17:16:22,439 INFO L203 MainTranslator]: Completed pre-run [2021-01-06 17:16:22,454 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/bresenham-ll_valuebound1.c[597,610] 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[~v~0,] left hand side expression in assignment: lhs: VariableLHS[~y~0,] left hand side expression in assignment: lhs: VariableLHS[~x~0,] left hand side expression in assignment: lhs: VariableLHS[~yx~0,] left hand side expression in assignment: lhs: VariableLHS[~xy~0,] left hand side expression in assignment: lhs: VariableLHS[~v~0,] left hand side expression in assignment: lhs: VariableLHS[~v~0,] left hand side expression in assignment: lhs: VariableLHS[~xy~0,] left hand side expression in assignment: lhs: VariableLHS[~yx~0,] [2021-01-06 17:16:22,464 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 17:16:22,480 INFO L208 MainTranslator]: Completed translation [2021-01-06 17:16:22,481 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:16:22 WrapperNode [2021-01-06 17:16:22,481 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-06 17:16:22,482 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-06 17:16:22,483 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-06 17:16:22,483 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-06 17:16:22,491 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:16:22" (1/1) ... [2021-01-06 17:16:22,499 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:16:22" (1/1) ... [2021-01-06 17:16:22,576 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-06 17:16:22,577 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-06 17:16:22,577 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-06 17:16:22,578 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-06 17:16:22,597 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:16:22" (1/1) ... [2021-01-06 17:16:22,597 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:16:22" (1/1) ... [2021-01-06 17:16:22,599 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:16:22" (1/1) ... [2021-01-06 17:16:22,600 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:16:22" (1/1) ... [2021-01-06 17:16:22,603 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:16:22" (1/1) ... [2021-01-06 17:16:22,608 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:16:22" (1/1) ... [2021-01-06 17:16:22,609 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:16:22" (1/1) ... [2021-01-06 17:16:22,612 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-06 17:16:22,613 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-06 17:16:22,613 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-06 17:16:22,613 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-06 17:16:22,614 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:16:22" (1/1) ... No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 17:16:22,709 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-06 17:16:22,709 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-06 17:16:22,709 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-06 17:16:22,710 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-06 17:16:22,970 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-06 17:16:22,971 INFO L299 CfgBuilder]: Removed 13 assume(true) statements. [2021-01-06 17:16:22,972 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:16:22 BoogieIcfgContainer [2021-01-06 17:16:22,973 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-06 17:16:22,975 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-06 17:16:22,975 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-06 17:16:22,979 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-06 17:16:22,979 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.01 05:16:22" (1/3) ... [2021-01-06 17:16:22,980 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d822ec4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 05:16:22, skipping insertion in model container [2021-01-06 17:16:22,980 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:16:22" (2/3) ... [2021-01-06 17:16:22,981 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d822ec4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 05:16:22, skipping insertion in model container [2021-01-06 17:16:22,981 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:16:22" (3/3) ... [2021-01-06 17:16:22,983 INFO L111 eAbstractionObserver]: Analyzing ICFG bresenham-ll_valuebound1.c [2021-01-06 17:16:22,990 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-06 17:16:22,999 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2021-01-06 17:16:23,049 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-01-06 17:16:23,110 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-06 17:16:23,111 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-06 17:16:23,111 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-06 17:16:23,111 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-06 17:16:23,111 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-06 17:16:23,111 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-06 17:16:23,111 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-06 17:16:23,112 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-06 17:16:23,145 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2021-01-06 17:16:23,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-01-06 17:16:23,160 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:16:23,163 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:16:23,164 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:16:23,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:16:23,179 INFO L82 PathProgramCache]: Analyzing trace with hash -594062832, now seen corresponding path program 1 times [2021-01-06 17:16:23,194 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:16:23,195 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202796043] [2021-01-06 17:16:23,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:16:23,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:16:23,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:16:23,420 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202796043] [2021-01-06 17:16:23,421 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:16:23,421 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-06 17:16:23,422 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851703911] [2021-01-06 17:16:23,427 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-01-06 17:16:23,428 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:16:23,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-01-06 17:16:23,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-01-06 17:16:23,454 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 2 states. [2021-01-06 17:16:23,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:16:23,477 INFO L93 Difference]: Finished difference Result 39 states and 52 transitions. [2021-01-06 17:16:23,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-01-06 17:16:23,479 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2021-01-06 17:16:23,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:16:23,492 INFO L225 Difference]: With dead ends: 39 [2021-01-06 17:16:23,492 INFO L226 Difference]: Without dead ends: 17 [2021-01-06 17:16:23,495 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-01-06 17:16:23,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-01-06 17:16:23,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-01-06 17:16:23,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-01-06 17:16:23,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2021-01-06 17:16:23,537 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 9 [2021-01-06 17:16:23,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:16:23,537 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2021-01-06 17:16:23,537 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-01-06 17:16:23,537 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2021-01-06 17:16:23,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-01-06 17:16:23,538 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:16:23,538 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:16:23,539 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-06 17:16:23,541 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:16:23,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:16:23,546 INFO L82 PathProgramCache]: Analyzing trace with hash 1182791572, now seen corresponding path program 1 times [2021-01-06 17:16:23,547 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:16:23,548 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768837884] [2021-01-06 17:16:23,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:16:23,601 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:16:23,602 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [380473868] [2021-01-06 17:16:23,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:16:23,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:16:23,764 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 21 conjunts are in the unsatisfiable core [2021-01-06 17:16:23,773 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:16:23,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:16:23,968 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768837884] [2021-01-06 17:16:23,968 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:16:23,968 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [380473868] [2021-01-06 17:16:23,969 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:16:23,969 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-06 17:16:23,969 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603373624] [2021-01-06 17:16:23,971 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 17:16:23,971 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:16:23,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 17:16:23,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-01-06 17:16:23,973 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand 6 states. [2021-01-06 17:16:24,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:16:24,106 INFO L93 Difference]: Finished difference Result 29 states and 31 transitions. [2021-01-06 17:16:24,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-01-06 17:16:24,107 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 9 [2021-01-06 17:16:24,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:16:24,108 INFO L225 Difference]: With dead ends: 29 [2021-01-06 17:16:24,108 INFO L226 Difference]: Without dead ends: 23 [2021-01-06 17:16:24,110 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-01-06 17:16:24,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-01-06 17:16:24,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 20. [2021-01-06 17:16:24,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-01-06 17:16:24,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2021-01-06 17:16:24,117 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 9 [2021-01-06 17:16:24,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:16:24,117 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2021-01-06 17:16:24,117 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 17:16:24,117 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2021-01-06 17:16:24,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-01-06 17:16:24,118 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:16:24,118 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:16:24,333 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-01-06 17:16:24,334 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:16:24,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:16:24,336 INFO L82 PathProgramCache]: Analyzing trace with hash -2039286562, now seen corresponding path program 1 times [2021-01-06 17:16:24,337 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:16:24,337 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973097660] [2021-01-06 17:16:24,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:16:24,353 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:16:24,354 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1023884704] [2021-01-06 17:16:24,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:16:24,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:16:24,401 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 27 conjunts are in the unsatisfiable core [2021-01-06 17:16:24,403 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:16:24,647 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 17:16:24,672 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:16:24,672 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973097660] [2021-01-06 17:16:24,673 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:16:24,673 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1023884704] [2021-01-06 17:16:24,673 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:16:24,673 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-01-06 17:16:24,674 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317884507] [2021-01-06 17:16:24,674 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-01-06 17:16:24,674 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:16:24,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-01-06 17:16:24,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-01-06 17:16:24,676 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand 9 states. [2021-01-06 17:16:24,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:16:24,994 INFO L93 Difference]: Finished difference Result 41 states and 47 transitions. [2021-01-06 17:16:24,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-06 17:16:24,994 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 14 [2021-01-06 17:16:24,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:16:24,995 INFO L225 Difference]: With dead ends: 41 [2021-01-06 17:16:24,996 INFO L226 Difference]: Without dead ends: 21 [2021-01-06 17:16:24,997 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=116, Unknown=0, NotChecked=0, Total=182 [2021-01-06 17:16:24,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-01-06 17:16:25,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2021-01-06 17:16:25,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-01-06 17:16:25,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2021-01-06 17:16:25,002 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 14 [2021-01-06 17:16:25,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:16:25,003 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2021-01-06 17:16:25,003 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-01-06 17:16:25,003 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2021-01-06 17:16:25,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-01-06 17:16:25,004 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:16:25,004 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:16:25,218 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:16:25,219 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:16:25,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:16:25,220 INFO L82 PathProgramCache]: Analyzing trace with hash -2037439520, now seen corresponding path program 1 times [2021-01-06 17:16:25,221 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:16:25,222 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434589831] [2021-01-06 17:16:25,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:16:25,248 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:16:25,249 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1172053890] [2021-01-06 17:16:25,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:16:25,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:16:25,309 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 35 conjunts are in the unsatisfiable core [2021-01-06 17:16:25,316 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:16:25,542 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:16:25,542 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434589831] [2021-01-06 17:16:25,543 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:16:25,543 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1172053890] [2021-01-06 17:16:25,543 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:16:25,543 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-01-06 17:16:25,544 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591460839] [2021-01-06 17:16:25,544 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-01-06 17:16:25,545 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:16:25,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-01-06 17:16:25,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-01-06 17:16:25,546 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand 10 states. [2021-01-06 17:16:26,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:16:26,134 INFO L93 Difference]: Finished difference Result 35 states and 37 transitions. [2021-01-06 17:16:26,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-01-06 17:16:26,134 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2021-01-06 17:16:26,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:16:26,136 INFO L225 Difference]: With dead ends: 35 [2021-01-06 17:16:26,137 INFO L226 Difference]: Without dead ends: 33 [2021-01-06 17:16:26,139 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=98, Invalid=208, Unknown=0, NotChecked=0, Total=306 [2021-01-06 17:16:26,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-01-06 17:16:26,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 24. [2021-01-06 17:16:26,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2021-01-06 17:16:26,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2021-01-06 17:16:26,150 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 14 [2021-01-06 17:16:26,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:16:26,151 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2021-01-06 17:16:26,151 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-01-06 17:16:26,151 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2021-01-06 17:16:26,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-01-06 17:16:26,155 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:16:26,155 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:16:26,370 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:16:26,371 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:16:26,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:16:26,372 INFO L82 PathProgramCache]: Analyzing trace with hash -878006574, now seen corresponding path program 1 times [2021-01-06 17:16:26,373 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:16:26,373 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909422464] [2021-01-06 17:16:26,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:16:26,389 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:16:26,389 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2034394812] [2021-01-06 17:16:26,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:16:26,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:16:26,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 34 conjunts are in the unsatisfiable core [2021-01-06 17:16:26,444 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:16:26,714 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 17:16:26,732 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:16:26,732 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909422464] [2021-01-06 17:16:26,733 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:16:26,733 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2034394812] [2021-01-06 17:16:26,733 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:16:26,733 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-01-06 17:16:26,733 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001950807] [2021-01-06 17:16:26,734 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-01-06 17:16:26,734 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:16:26,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-01-06 17:16:26,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-01-06 17:16:26,735 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand 11 states. [2021-01-06 17:16:27,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:16:27,036 INFO L93 Difference]: Finished difference Result 33 states and 35 transitions. [2021-01-06 17:16:27,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-01-06 17:16:27,037 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 17 [2021-01-06 17:16:27,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:16:27,038 INFO L225 Difference]: With dead ends: 33 [2021-01-06 17:16:27,038 INFO L226 Difference]: Without dead ends: 29 [2021-01-06 17:16:27,039 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2021-01-06 17:16:27,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-01-06 17:16:27,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 25. [2021-01-06 17:16:27,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2021-01-06 17:16:27,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2021-01-06 17:16:27,044 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 17 [2021-01-06 17:16:27,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:16:27,045 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2021-01-06 17:16:27,045 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-01-06 17:16:27,045 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2021-01-06 17:16:27,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-01-06 17:16:27,045 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:16:27,046 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:16:27,259 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:16:27,260 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:16:27,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:16:27,261 INFO L82 PathProgramCache]: Analyzing trace with hash -1901094894, now seen corresponding path program 1 times [2021-01-06 17:16:27,261 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:16:27,261 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410226316] [2021-01-06 17:16:27,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:16:27,283 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:16:27,283 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [174227504] [2021-01-06 17:16:27,283 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 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:16:27,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:16:27,332 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 10 conjunts are in the unsatisfiable core [2021-01-06 17:16:27,333 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:16:27,505 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:16:27,505 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410226316] [2021-01-06 17:16:27,505 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:16:27,506 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [174227504] [2021-01-06 17:16:27,506 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:16:27,506 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-01-06 17:16:27,506 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933720757] [2021-01-06 17:16:27,507 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 17:16:27,507 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:16:27,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 17:16:27,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-01-06 17:16:27,508 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand 6 states. [2021-01-06 17:16:27,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:16:27,637 INFO L93 Difference]: Finished difference Result 37 states and 40 transitions. [2021-01-06 17:16:27,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-06 17:16:27,638 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2021-01-06 17:16:27,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:16:27,638 INFO L225 Difference]: With dead ends: 37 [2021-01-06 17:16:27,639 INFO L226 Difference]: Without dead ends: 26 [2021-01-06 17:16:27,639 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-01-06 17:16:27,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-01-06 17:16:27,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2021-01-06 17:16:27,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2021-01-06 17:16:27,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2021-01-06 17:16:27,645 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 19 [2021-01-06 17:16:27,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:16:27,646 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2021-01-06 17:16:27,646 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 17:16:27,646 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2021-01-06 17:16:27,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-01-06 17:16:27,647 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:16:27,647 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:16:27,860 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-01-06 17:16:27,861 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:16:27,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:16:27,862 INFO L82 PathProgramCache]: Analyzing trace with hash -1899247852, now seen corresponding path program 2 times [2021-01-06 17:16:27,862 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:16:27,863 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143275419] [2021-01-06 17:16:27,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:16:27,877 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:16:27,878 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [544726560] [2021-01-06 17:16:27,878 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:16:27,938 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 17:16:27,939 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:16:27,940 WARN L261 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 58 conjunts are in the unsatisfiable core [2021-01-06 17:16:27,943 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:16:28,457 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:16:28,458 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143275419] [2021-01-06 17:16:28,458 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:16:28,458 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [544726560] [2021-01-06 17:16:28,458 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:16:28,458 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2021-01-06 17:16:28,459 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543414525] [2021-01-06 17:16:28,459 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-01-06 17:16:28,459 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:16:28,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-01-06 17:16:28,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2021-01-06 17:16:28,461 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand 15 states. [2021-01-06 17:16:29,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:16:29,307 INFO L93 Difference]: Finished difference Result 32 states and 35 transitions. [2021-01-06 17:16:29,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-01-06 17:16:29,307 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 19 [2021-01-06 17:16:29,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:16:29,308 INFO L225 Difference]: With dead ends: 32 [2021-01-06 17:16:29,308 INFO L226 Difference]: Without dead ends: 0 [2021-01-06 17:16:29,309 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=135, Invalid=417, Unknown=0, NotChecked=0, Total=552 [2021-01-06 17:16:29,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-01-06 17:16:29,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-01-06 17:16:29,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-01-06 17:16:29,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-01-06 17:16:29,310 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2021-01-06 17:16:29,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:16:29,310 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-01-06 17:16:29,310 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2021-01-06 17:16:29,310 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-01-06 17:16:29,310 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-01-06 17:16:29,511 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:16:29,515 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-01-06 17:16:29,831 WARN L197 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 51 [2021-01-06 17:16:30,051 WARN L197 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 48 [2021-01-06 17:16:30,057 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 16) no Hoare annotation was computed. [2021-01-06 17:16:30,057 INFO L192 CegarLoopUtils]: At program point L52(lines 21 53) the Hoare annotation is: true [2021-01-06 17:16:30,057 INFO L189 CegarLoopUtils]: For program point L15(lines 15 16) no Hoare annotation was computed. [2021-01-06 17:16:30,057 INFO L189 CegarLoopUtils]: For program point L15-1(lines 15 16) no Hoare annotation was computed. [2021-01-06 17:16:30,057 INFO L189 CegarLoopUtils]: For program point L11(line 11) no Hoare annotation was computed. [2021-01-06 17:16:30,058 INFO L189 CegarLoopUtils]: For program point L11-2(line 11) no Hoare annotation was computed. [2021-01-06 17:16:30,058 INFO L189 CegarLoopUtils]: For program point L40(lines 40 45) no Hoare annotation was computed. [2021-01-06 17:16:30,058 INFO L189 CegarLoopUtils]: For program point L40-2(lines 40 45) no Hoare annotation was computed. [2021-01-06 17:16:30,058 INFO L189 CegarLoopUtils]: For program point L-1(line -1) no Hoare annotation was computed. [2021-01-06 17:16:30,058 INFO L185 CegarLoopUtils]: At program point L32-2(lines 32 47) the Hoare annotation is: (let ((.cse9 (* 2 ULTIMATE.start_main_~Y~0))) (let ((.cse7 (= ULTIMATE.start_main_~y~0 0)) (.cse5 (+ ULTIMATE.start_main_~v~0 ULTIMATE.start_main_~X~0)) (.cse8 (<= 0 ULTIMATE.start_main_~Y~0)) (.cse10 (* ULTIMATE.start_main_~Y~0 4)) (.cse0 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse1 (<= ULTIMATE.start_main_~X~0 1)) (.cse6 (<= 0 ULTIMATE.start_main_~X~0)) (.cse2 (<= ULTIMATE.start_main_~Y~0 1)) (.cse3 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse4 (<= ULTIMATE.start_main_~X~0 .cse9))) (or (and .cse0 (= ULTIMATE.start_main_~x~0 2) (= ULTIMATE.start_main_~y~0 2) (<= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~X~0 1)) .cse1 (= (+ ULTIMATE.start_main_~v~0 (* ULTIMATE.start_main_~X~0 5)) (* ULTIMATE.start_main_~Y~0 6)) .cse2 .cse3 .cse4) (and (= (* ULTIMATE.start_main_~Y~0 2) .cse5) (= ULTIMATE.start_main_~x~0 0) .cse1 .cse6 .cse2 .cse7 .cse3 .cse8) (and .cse1 (< ULTIMATE.start_main_~v~0 .cse9) .cse7 .cse3 (= .cse10 .cse5) .cse8) (and (= (+ ULTIMATE.start_main_~v~0 (* ULTIMATE.start_main_~X~0 3)) .cse10) (= ULTIMATE.start_main_~x~0 1) .cse0 .cse1 .cse6 .cse2 (= ULTIMATE.start_main_~y~0 1) .cse3 .cse4)))) [2021-01-06 17:16:30,058 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-01-06 17:16:30,058 INFO L189 CegarLoopUtils]: For program point L32-3(lines 32 47) no Hoare annotation was computed. [2021-01-06 17:16:30,058 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-01-06 17:16:30,059 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 16) no Hoare annotation was computed. [2021-01-06 17:16:30,059 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-01-06 17:16:30,059 INFO L189 CegarLoopUtils]: For program point L14(lines 14 17) no Hoare annotation was computed. [2021-01-06 17:16:30,059 INFO L185 CegarLoopUtils]: At program point L14-2(lines 36 37) the Hoare annotation is: (let ((.cse2 (* 2 ULTIMATE.start_main_~Y~0))) (let ((.cse10 (<= ULTIMATE.start_main_~X~0 .cse2)) (.cse8 (* ULTIMATE.start_main_~Y~0 2)) (.cse5 (+ ULTIMATE.start_main_~v~0 ULTIMATE.start_main_~X~0)) (.cse0 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse1 (<= ULTIMATE.start_main_~X~0 1)) (.cse7 (<= 0 ULTIMATE.start_main_~X~0)) (.cse9 (<= ULTIMATE.start_main_~Y~0 1)) (.cse3 (= ULTIMATE.start_main_~y~0 0)) (.cse4 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse6 (<= 0 ULTIMATE.start_main_~Y~0))) (or (and .cse0 .cse1 (< ULTIMATE.start_main_~v~0 .cse2) .cse3 .cse4 (= (* ULTIMATE.start_main_~Y~0 4) .cse5) .cse6) (and (= ULTIMATE.start_main_~x~0 1) .cse0 .cse1 .cse7 (= (+ (* (* ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~Y~0) 2) .cse8) (+ ULTIMATE.start_main_~v~0 (* (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~X~0) 2) ULTIMATE.start_main_~X~0)) .cse9 (= ULTIMATE.start_main_~y~0 1) .cse4 .cse10) (and .cse0 (= ULTIMATE.start_main_~x~0 2) (= ULTIMATE.start_main_~y~0 2) (<= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~X~0 1)) .cse1 (= (+ ULTIMATE.start_main_~v~0 (* ULTIMATE.start_main_~X~0 5)) (* ULTIMATE.start_main_~Y~0 6)) .cse9 .cse4 .cse10) (and (= .cse8 .cse5) .cse0 (= ULTIMATE.start_main_~x~0 0) .cse1 .cse7 .cse9 .cse3 .cse4 .cse6)))) [2021-01-06 17:16:30,059 INFO L189 CegarLoopUtils]: For program point L14-3(lines 14 17) no Hoare annotation was computed. [2021-01-06 17:16:30,059 INFO L189 CegarLoopUtils]: For program point L10(lines 10 12) no Hoare annotation was computed. [2021-01-06 17:16:30,060 INFO L189 CegarLoopUtils]: For program point L10-1(lines 10 12) no Hoare annotation was computed. [2021-01-06 17:16:30,060 INFO L192 CegarLoopUtils]: At program point L14-5(lines 13 19) the Hoare annotation is: true [2021-01-06 17:16:30,085 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.01 05:16:30 BoogieIcfgContainer [2021-01-06 17:16:30,085 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-01-06 17:16:30,086 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-01-06 17:16:30,086 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-01-06 17:16:30,086 INFO L275 PluginConnector]: Witness Printer initialized [2021-01-06 17:16:30,087 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:16:22" (3/4) ... [2021-01-06 17:16:30,091 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-01-06 17:16:30,103 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2021-01-06 17:16:30,103 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-01-06 17:16:30,104 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-01-06 17:16:30,104 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-01-06 17:16:30,168 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/nla-digbench-scaling/bresenham-ll_valuebound1.c-witness.graphml [2021-01-06 17:16:30,168 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-01-06 17:16:30,170 INFO L168 Benchmark]: Toolchain (without parser) took 8044.00 ms. Allocated memory was 175.1 MB in the beginning and 253.8 MB in the end (delta: 78.6 MB). Free memory was 155.5 MB in the beginning and 109.4 MB in the end (delta: 46.1 MB). Peak memory consumption was 124.2 MB. Max. memory is 8.0 GB. [2021-01-06 17:16:30,171 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 175.1 MB. Free memory is still 146.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-01-06 17:16:30,172 INFO L168 Benchmark]: CACSL2BoogieTranslator took 354.08 ms. Allocated memory is still 175.1 MB. Free memory was 155.2 MB in the beginning and 144.8 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-01-06 17:16:30,172 INFO L168 Benchmark]: Boogie Procedure Inliner took 94.22 ms. Allocated memory is still 175.1 MB. Free memory was 144.8 MB in the beginning and 158.5 MB in the end (delta: -13.7 MB). Peak memory consumption was 4.0 MB. Max. memory is 8.0 GB. [2021-01-06 17:16:30,173 INFO L168 Benchmark]: Boogie Preprocessor took 34.50 ms. Allocated memory is still 175.1 MB. Free memory was 158.5 MB in the beginning and 157.5 MB in the end (delta: 997.7 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-01-06 17:16:30,174 INFO L168 Benchmark]: RCFGBuilder took 360.19 ms. Allocated memory is still 175.1 MB. Free memory was 157.2 MB in the beginning and 143.6 MB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2021-01-06 17:16:30,175 INFO L168 Benchmark]: TraceAbstraction took 7110.13 ms. Allocated memory was 175.1 MB in the beginning and 253.8 MB in the end (delta: 78.6 MB). Free memory was 143.3 MB in the beginning and 112.5 MB in the end (delta: 30.7 MB). Peak memory consumption was 109.7 MB. Max. memory is 8.0 GB. [2021-01-06 17:16:30,176 INFO L168 Benchmark]: Witness Printer took 82.79 ms. Allocated memory is still 253.8 MB. Free memory was 112.5 MB in the beginning and 109.4 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2021-01-06 17:16:30,181 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 175.1 MB. Free memory is still 146.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 354.08 ms. Allocated memory is still 175.1 MB. Free memory was 155.2 MB in the beginning and 144.8 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 94.22 ms. Allocated memory is still 175.1 MB. Free memory was 144.8 MB in the beginning and 158.5 MB in the end (delta: -13.7 MB). Peak memory consumption was 4.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 34.50 ms. Allocated memory is still 175.1 MB. Free memory was 158.5 MB in the beginning and 157.5 MB in the end (delta: 997.7 kB). There was no memory consumed. Max. memory is 8.0 GB. * RCFGBuilder took 360.19 ms. Allocated memory is still 175.1 MB. Free memory was 157.2 MB in the beginning and 143.6 MB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 7110.13 ms. Allocated memory was 175.1 MB in the beginning and 253.8 MB in the end (delta: 78.6 MB). Free memory was 143.3 MB in the beginning and 112.5 MB in the end (delta: 30.7 MB). Peak memory consumption was 109.7 MB. Max. memory is 8.0 GB. * Witness Printer took 82.79 ms. Allocated memory is still 253.8 MB. Free memory was 112.5 MB in the beginning and 109.4 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 16]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 16]: 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: 36]: Loop Invariant Derived loop invariant: ((((((((1 == cond && X <= 1) && v < 2 * Y) && y == 0) && cond == 1) && Y * 4 == v + X) && 0 <= Y) || ((((((((x == 1 && 1 == cond) && X <= 1) && 0 <= X) && x * Y * 2 + Y * 2 == v + y * X * 2 + X) && Y <= 1) && y == 1) && cond == 1) && X <= 2 * Y)) || ((((((((1 == cond && x == 2) && y == 2) && x <= X + 1) && X <= 1) && v + X * 5 == Y * 6) && Y <= 1) && cond == 1) && X <= 2 * Y)) || ((((((((Y * 2 == v + X && 1 == cond) && x == 0) && X <= 1) && 0 <= X) && Y <= 1) && y == 0) && cond == 1) && 0 <= Y) - InvariantResult [Line: 32]: Loop Invariant Derived loop invariant: ((((((((((1 == cond && x == 2) && y == 2) && x <= X + 1) && X <= 1) && v + X * 5 == Y * 6) && Y <= 1) && cond == 1) && X <= 2 * Y) || (((((((Y * 2 == v + X && x == 0) && X <= 1) && 0 <= X) && Y <= 1) && y == 0) && cond == 1) && 0 <= Y)) || (((((X <= 1 && v < 2 * Y) && y == 0) && cond == 1) && Y * 4 == v + X) && 0 <= Y)) || ((((((((v + X * 3 == Y * 4 && x == 1) && 1 == cond) && X <= 1) && 0 <= X) && Y <= 1) && y == 1) && cond == 1) && X <= 2 * Y) - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 21 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 6.4s, OverallIterations: 7, TraceHistogramMax: 3, AutomataDifference: 2.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 72 SDtfs, 280 SDslu, 138 SDs, 0 SdLazy, 412 SolverSat, 111 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 120 GetRequests, 41 SyntacticMatches, 2 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 2.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred 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, 7 MinimizatonAttempts, 16 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 15 NumberOfFragments, 275 HoareAnnotationTreeSize, 4 FomulaSimplifications, 334 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 77 FormulaSimplificationTreeSizeReductionInter, 0.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 101 NumberOfCodeBlocks, 101 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 94 ConstructedInterpolants, 5 QuantifiedInterpolants, 21472 SizeOfPredicates, 75 NumberOfNonLiveVariables, 521 ConjunctsInSsa, 185 ConjunctsInUnsatCore, 7 InterpolantComputations, 2 PerfectInterpolantSequences, 6/25 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...