/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/ps2-ll_valuebound1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 08:04:12,439 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 08:04:12,442 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 08:04:12,481 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 08:04:12,481 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 08:04:12,483 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 08:04:12,485 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 08:04:12,488 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 08:04:12,490 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 08:04:12,492 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 08:04:12,493 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 08:04:12,495 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 08:04:12,495 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 08:04:12,496 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 08:04:12,498 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 08:04:12,499 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 08:04:12,500 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 08:04:12,501 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 08:04:12,503 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 08:04:12,506 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 08:04:12,508 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 08:04:12,509 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 08:04:12,511 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 08:04:12,512 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 08:04:12,515 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-23 08:04:12,519 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-23 08:04:12,520 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-23 08:04:12,521 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-23 08:04:12,521 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-23 08:04:12,523 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-23 08:04:12,523 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-23 08:04:12,524 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-23 08:04:12,524 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-23 08:04:12,525 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 08:04:12,526 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 08:04:12,526 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 08:04:12,528 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 08:04:12,576 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 08:04:12,576 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 08:04:12,578 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 08:04:12,578 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 08:04:12,578 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 08:04:12,578 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 08:04:12,579 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 08:04:12,579 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 08:04:12,579 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 08:04:12,580 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 08:04:12,580 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 08:04:12,580 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 08:04:12,580 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 08:04:12,581 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 08:04:12,581 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 08:04:12,581 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 08:04:12,581 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 08:04:12,582 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 08:04:12,582 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 08:04:12,582 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 08:04:12,582 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 08:04:12,583 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 08:04:12,583 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 08:04:12,583 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 08:04:12,583 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 08:04:12,584 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 08:04:12,973 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 08:04:13,000 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 08:04:13,004 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 08:04:13,006 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 08:04:13,006 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 08:04:13,007 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/ps2-ll_valuebound1.c [2020-12-23 08:04:13,090 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/a59ba86f0/dff46f63057046a9888cd1ceb65d0d28/FLAG48dea9939 [2020-12-23 08:04:13,570 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 08:04:13,571 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/ps2-ll_valuebound1.c [2020-12-23 08:04:13,578 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/a59ba86f0/dff46f63057046a9888cd1ceb65d0d28/FLAG48dea9939 [2020-12-23 08:04:13,958 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/a59ba86f0/dff46f63057046a9888cd1ceb65d0d28 [2020-12-23 08:04:13,968 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 08:04:13,971 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 08:04:13,975 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 08:04:13,975 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 08:04:13,982 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 08:04:13,982 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 08:04:13" (1/1) ... [2020-12-23 08:04:13,986 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ca0fa8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:04:13, skipping insertion in model container [2020-12-23 08:04:13,987 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 08:04:13" (1/1) ... [2020-12-23 08:04:13,995 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 08:04:14,012 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-23 08:04:14,163 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/ps2-ll_valuebound1.c[454,467] left hand side expression in assignment: lhs: VariableLHS[~k~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[~c~0,] left hand side expression in assignment: lhs: VariableLHS[~c~0,] left hand side expression in assignment: lhs: VariableLHS[~y~0,] left hand side expression in assignment: lhs: VariableLHS[~x~0,] [2020-12-23 08:04:14,179 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 08:04:14,189 INFO L203 MainTranslator]: Completed pre-run [2020-12-23 08:04:14,204 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/ps2-ll_valuebound1.c[454,467] left hand side expression in assignment: lhs: VariableLHS[~k~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[~c~0,] left hand side expression in assignment: lhs: VariableLHS[~c~0,] left hand side expression in assignment: lhs: VariableLHS[~y~0,] left hand side expression in assignment: lhs: VariableLHS[~x~0,] [2020-12-23 08:04:14,210 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 08:04:14,227 INFO L208 MainTranslator]: Completed translation [2020-12-23 08:04:14,227 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:04:14 WrapperNode [2020-12-23 08:04:14,228 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 08:04:14,229 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 08:04:14,229 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 08:04:14,229 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 08:04:14,240 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:04:14" (1/1) ... [2020-12-23 08:04:14,249 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:04:14" (1/1) ... [2020-12-23 08:04:14,271 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 08:04:14,271 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 08:04:14,272 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 08:04:14,272 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 08:04:14,281 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:04:14" (1/1) ... [2020-12-23 08:04:14,281 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:04:14" (1/1) ... [2020-12-23 08:04:14,283 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:04:14" (1/1) ... [2020-12-23 08:04:14,283 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:04:14" (1/1) ... [2020-12-23 08:04:14,287 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:04:14" (1/1) ... [2020-12-23 08:04:14,291 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:04:14" (1/1) ... [2020-12-23 08:04:14,292 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:04:14" (1/1) ... [2020-12-23 08:04:14,294 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 08:04:14,295 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 08:04:14,296 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 08:04:14,296 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 08:04:14,297 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:04:14" (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 08:04:14,418 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 08:04:14,418 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 08:04:14,418 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 08:04:14,418 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 08:04:14,728 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 08:04:14,728 INFO L299 CfgBuilder]: Removed 11 assume(true) statements. [2020-12-23 08:04:14,730 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 08:04:14 BoogieIcfgContainer [2020-12-23 08:04:14,730 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 08:04:14,732 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 08:04:14,735 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 08:04:14,741 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 08:04:14,742 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 08:04:13" (1/3) ... [2020-12-23 08:04:14,746 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f37c817 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 08:04:14, skipping insertion in model container [2020-12-23 08:04:14,746 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:04:14" (2/3) ... [2020-12-23 08:04:14,747 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f37c817 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 08:04:14, skipping insertion in model container [2020-12-23 08:04:14,747 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 08:04:14" (3/3) ... [2020-12-23 08:04:14,749 INFO L111 eAbstractionObserver]: Analyzing ICFG ps2-ll_valuebound1.c [2020-12-23 08:04:14,762 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 08:04:14,768 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-12-23 08:04:14,792 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-12-23 08:04:14,834 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 08:04:14,834 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 08:04:14,835 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 08:04:14,835 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 08:04:14,837 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 08:04:14,837 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 08:04:14,837 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 08:04:14,837 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 08:04:14,856 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2020-12-23 08:04:14,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-23 08:04:14,863 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 08:04:14,864 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-23 08:04:14,865 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 08:04:14,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 08:04:14,872 INFO L82 PathProgramCache]: Analyzing trace with hash 1804972333, now seen corresponding path program 1 times [2020-12-23 08:04:14,882 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 08:04:14,883 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715731399] [2020-12-23 08:04:14,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 08:04:14,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 08:04:15,063 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 08:04:15,064 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715731399] [2020-12-23 08:04:15,065 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 08:04:15,065 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 08:04:15,066 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760976581] [2020-12-23 08:04:15,070 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-23 08:04:15,071 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 08:04:15,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-23 08:04:15,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 08:04:15,087 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 2 states. [2020-12-23 08:04:15,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 08:04:15,104 INFO L93 Difference]: Finished difference Result 31 states and 40 transitions. [2020-12-23 08:04:15,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-23 08:04:15,105 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 7 [2020-12-23 08:04:15,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 08:04:15,114 INFO L225 Difference]: With dead ends: 31 [2020-12-23 08:04:15,115 INFO L226 Difference]: Without dead ends: 13 [2020-12-23 08:04:15,117 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 08:04:15,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2020-12-23 08:04:15,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2020-12-23 08:04:15,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-12-23 08:04:15,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2020-12-23 08:04:15,150 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 7 [2020-12-23 08:04:15,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 08:04:15,150 INFO L481 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2020-12-23 08:04:15,150 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-23 08:04:15,150 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2020-12-23 08:04:15,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-23 08:04:15,151 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 08:04:15,151 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-23 08:04:15,151 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 08:04:15,152 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 08:04:15,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 08:04:15,153 INFO L82 PathProgramCache]: Analyzing trace with hash 1806819375, now seen corresponding path program 1 times [2020-12-23 08:04:15,153 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 08:04:15,153 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963264981] [2020-12-23 08:04:15,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 08:04:15,177 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 08:04:15,178 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [187423983] [2020-12-23 08:04:15,178 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 08:04:15,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 08:04:15,234 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 15 conjunts are in the unsatisfiable core [2020-12-23 08:04:15,239 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 08:04:15,328 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 08:04:15,328 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963264981] [2020-12-23 08:04:15,329 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 08:04:15,329 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [187423983] [2020-12-23 08:04:15,329 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 08:04:15,329 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 08:04:15,330 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143441810] [2020-12-23 08:04:15,331 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 08:04:15,331 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 08:04:15,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 08:04:15,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 08:04:15,333 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 5 states. [2020-12-23 08:04:15,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 08:04:15,423 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2020-12-23 08:04:15,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 08:04:15,424 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2020-12-23 08:04:15,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 08:04:15,424 INFO L225 Difference]: With dead ends: 23 [2020-12-23 08:04:15,425 INFO L226 Difference]: Without dead ends: 17 [2020-12-23 08:04:15,426 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-23 08:04:15,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-12-23 08:04:15,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 16. [2020-12-23 08:04:15,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-12-23 08:04:15,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2020-12-23 08:04:15,436 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 7 [2020-12-23 08:04:15,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 08:04:15,437 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2020-12-23 08:04:15,437 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 08:04:15,437 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2020-12-23 08:04:15,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-23 08:04:15,438 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 08:04:15,438 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 08:04:15,639 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-12-23 08:04:15,639 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 08:04:15,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 08:04:15,642 INFO L82 PathProgramCache]: Analyzing trace with hash -1864186656, now seen corresponding path program 1 times [2020-12-23 08:04:15,643 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 08:04:15,643 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874225360] [2020-12-23 08:04:15,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 08:04:15,678 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 08:04:15,679 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1446137312] [2020-12-23 08:04:15,679 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 08:04:15,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 08:04:15,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 19 conjunts are in the unsatisfiable core [2020-12-23 08:04:15,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 08:04:15,890 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 08:04:15,890 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874225360] [2020-12-23 08:04:15,891 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 08:04:15,891 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1446137312] [2020-12-23 08:04:15,891 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 08:04:15,891 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-12-23 08:04:15,892 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643469] [2020-12-23 08:04:15,892 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 08:04:15,892 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 08:04:15,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 08:04:15,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-23 08:04:15,893 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 6 states. [2020-12-23 08:04:15,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 08:04:15,997 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions. [2020-12-23 08:04:15,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 08:04:15,998 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-12-23 08:04:15,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 08:04:15,999 INFO L225 Difference]: With dead ends: 26 [2020-12-23 08:04:15,999 INFO L226 Difference]: Without dead ends: 20 [2020-12-23 08:04:16,000 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-12-23 08:04:16,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-12-23 08:04:16,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 19. [2020-12-23 08:04:16,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-12-23 08:04:16,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2020-12-23 08:04:16,013 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 10 [2020-12-23 08:04:16,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 08:04:16,014 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2020-12-23 08:04:16,014 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 08:04:16,014 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2020-12-23 08:04:16,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-23 08:04:16,017 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 08:04:16,017 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1] [2020-12-23 08:04:16,219 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 08:04:16,221 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 08:04:16,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 08:04:16,223 INFO L82 PathProgramCache]: Analyzing trace with hash -2052598129, now seen corresponding path program 2 times [2020-12-23 08:04:16,223 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 08:04:16,224 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059965154] [2020-12-23 08:04:16,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 08:04:16,238 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 08:04:16,239 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [816557447] [2020-12-23 08:04:16,239 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 08:04:16,302 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 08:04:16,302 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 08:04:16,304 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 8 conjunts are in the unsatisfiable core [2020-12-23 08:04:16,305 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 08:04:16,414 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 08:04:16,414 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059965154] [2020-12-23 08:04:16,414 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 08:04:16,415 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [816557447] [2020-12-23 08:04:16,415 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 08:04:16,415 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-23 08:04:16,415 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696970755] [2020-12-23 08:04:16,416 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 08:04:16,416 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 08:04:16,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 08:04:16,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-23 08:04:16,417 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 6 states. [2020-12-23 08:04:16,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 08:04:16,516 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2020-12-23 08:04:16,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 08:04:16,516 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-12-23 08:04:16,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 08:04:16,516 INFO L225 Difference]: With dead ends: 19 [2020-12-23 08:04:16,517 INFO L226 Difference]: Without dead ends: 0 [2020-12-23 08:04:16,519 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-12-23 08:04:16,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-23 08:04:16,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-23 08:04:16,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-23 08:04:16,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-23 08:04:16,521 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2020-12-23 08:04:16,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 08:04:16,521 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-23 08:04:16,522 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 08:04:16,522 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-23 08:04:16,522 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-23 08:04:16,735 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 08:04:16,739 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-23 08:04:16,840 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-23 08:04:16,840 INFO L185 CegarLoopUtils]: At program point L27-2(lines 27 36) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse1 (<= 0 ULTIMATE.start_main_~k~0)) (.cse2 (<= ULTIMATE.start_main_~k~0 1))) (or (and (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~x~0) (<= 1 ULTIMATE.start_main_~c~0) (= ULTIMATE.start_main_~y~0 1) .cse0 .cse1 .cse2) (and (<= 0 ULTIMATE.start_main_~c~0) (= ULTIMATE.start_main_~x~0 0) (= ULTIMATE.start_main_~y~0 0) .cse0 .cse1 .cse2))) [2020-12-23 08:04:16,841 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-12-23 08:04:16,841 INFO L189 CegarLoopUtils]: For program point L27-3(lines 27 36) no Hoare annotation was computed. [2020-12-23 08:04:16,841 INFO L189 CegarLoopUtils]: For program point L11(lines 11 12) no Hoare annotation was computed. [2020-12-23 08:04:16,841 INFO L189 CegarLoopUtils]: For program point L11-1(lines 11 12) no Hoare annotation was computed. [2020-12-23 08:04:16,841 INFO L189 CegarLoopUtils]: For program point L7(line 7) no Hoare annotation was computed. [2020-12-23 08:04:16,841 INFO L189 CegarLoopUtils]: For program point L-1(line -1) no Hoare annotation was computed. [2020-12-23 08:04:16,842 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-23 08:04:16,842 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-12-23 08:04:16,842 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-12-23 08:04:16,842 INFO L189 CegarLoopUtils]: For program point L10(lines 10 13) no Hoare annotation was computed. [2020-12-23 08:04:16,843 INFO L185 CegarLoopUtils]: At program point L10-2(lines 30 31) the Hoare annotation is: (let ((.cse0 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse1 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse2 (<= 0 ULTIMATE.start_main_~k~0)) (.cse3 (<= ULTIMATE.start_main_~k~0 1))) (or (and .cse0 (= ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~x~0) (<= 1 ULTIMATE.start_main_~c~0) (= ULTIMATE.start_main_~y~0 1) .cse1 .cse2 .cse3) (and (<= 0 ULTIMATE.start_main_~c~0) .cse0 (= ULTIMATE.start_main_~x~0 0) (= ULTIMATE.start_main_~y~0 0) .cse1 .cse2 .cse3))) [2020-12-23 08:04:16,843 INFO L189 CegarLoopUtils]: For program point L10-3(lines 10 13) no Hoare annotation was computed. [2020-12-23 08:04:16,843 INFO L192 CegarLoopUtils]: At program point L39(lines 17 40) the Hoare annotation is: true [2020-12-23 08:04:16,843 INFO L189 CegarLoopUtils]: For program point L6(lines 6 8) no Hoare annotation was computed. [2020-12-23 08:04:16,843 INFO L192 CegarLoopUtils]: At program point L10-5(lines 9 15) the Hoare annotation is: true [2020-12-23 08:04:16,862 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.12 08:04:16 BoogieIcfgContainer [2020-12-23 08:04:16,863 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-23 08:04:16,863 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-23 08:04:16,864 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-23 08:04:16,864 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-23 08:04:16,864 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 08:04:14" (3/4) ... [2020-12-23 08:04:16,868 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-23 08:04:16,879 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2020-12-23 08:04:16,879 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-23 08:04:16,880 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-23 08:04:16,880 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-23 08:04:16,925 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/nla-digbench-scaling/ps2-ll_valuebound1.c-witness.graphml [2020-12-23 08:04:16,925 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-23 08:04:16,927 INFO L168 Benchmark]: Toolchain (without parser) took 2955.81 ms. Allocated memory is still 167.8 MB. Free memory was 126.0 MB in the beginning and 78.3 MB in the end (delta: 47.7 MB). Peak memory consumption was 47.2 MB. Max. memory is 8.0 GB. [2020-12-23 08:04:16,928 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 167.8 MB. Free memory is still 142.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 08:04:16,928 INFO L168 Benchmark]: CACSL2BoogieTranslator took 252.96 ms. Allocated memory is still 167.8 MB. Free memory was 126.0 MB in the beginning and 116.3 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-12-23 08:04:16,929 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.78 ms. Allocated memory is still 167.8 MB. Free memory was 116.3 MB in the beginning and 114.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-23 08:04:16,930 INFO L168 Benchmark]: Boogie Preprocessor took 22.90 ms. Allocated memory is still 167.8 MB. Free memory was 114.8 MB in the beginning and 113.7 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-23 08:04:16,930 INFO L168 Benchmark]: RCFGBuilder took 434.86 ms. Allocated memory is still 167.8 MB. Free memory was 113.7 MB in the beginning and 141.3 MB in the end (delta: -27.6 MB). Peak memory consumption was 7.3 MB. Max. memory is 8.0 GB. [2020-12-23 08:04:16,931 INFO L168 Benchmark]: TraceAbstraction took 2131.00 ms. Allocated memory is still 167.8 MB. Free memory was 140.9 MB in the beginning and 80.9 MB in the end (delta: 59.9 MB). Peak memory consumption was 60.3 MB. Max. memory is 8.0 GB. [2020-12-23 08:04:16,932 INFO L168 Benchmark]: Witness Printer took 61.66 ms. Allocated memory is still 167.8 MB. Free memory was 80.9 MB in the beginning and 78.3 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-23 08:04:16,936 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 167.8 MB. Free memory is still 142.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 252.96 ms. Allocated memory is still 167.8 MB. Free memory was 126.0 MB in the beginning and 116.3 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 41.78 ms. Allocated memory is still 167.8 MB. Free memory was 116.3 MB in the beginning and 114.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 22.90 ms. Allocated memory is still 167.8 MB. Free memory was 114.8 MB in the beginning and 113.7 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 434.86 ms. Allocated memory is still 167.8 MB. Free memory was 113.7 MB in the beginning and 141.3 MB in the end (delta: -27.6 MB). Peak memory consumption was 7.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2131.00 ms. Allocated memory is still 167.8 MB. Free memory was 140.9 MB in the beginning and 80.9 MB in the end (delta: 59.9 MB). Peak memory consumption was 60.3 MB. Max. memory is 8.0 GB. * Witness Printer took 61.66 ms. Allocated memory is still 167.8 MB. Free memory was 80.9 MB in the beginning and 78.3 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 12]: 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: 9]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 30]: Loop Invariant Derived loop invariant: ((((((1 == cond && y == x) && 1 <= c) && y == 1) && cond == 1) && 0 <= k) && k <= 1) || ((((((0 <= c && 1 == cond) && x == 0) && y == 0) && cond == 1) && 0 <= k) && k <= 1) - InvariantResult [Line: 27]: Loop Invariant Derived loop invariant: ((((((1 == cond && y == x) && 1 <= c) && y == 1) && cond == 1) && 0 <= k) && k <= 1) || (((((0 <= c && x == 0) && y == 0) && cond == 1) && 0 <= k) && k <= 1) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 17 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.9s, OverallIterations: 4, TraceHistogramMax: 3, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 41 SDtfs, 48 SDslu, 40 SDs, 0 SdLazy, 52 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 39 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred 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, 89 HoareAnnotationTreeSize, 4 FomulaSimplifications, 46 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 37 NumberOfCodeBlocks, 37 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 33 ConstructedInterpolants, 0 QuantifiedInterpolants, 1641 SizeOfPredicates, 15 NumberOfNonLiveVariables, 195 ConjunctsInSsa, 42 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...