/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-178dd20 [2021-01-06 17:58:35,619 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-06 17:58:35,622 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-06 17:58:35,656 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-06 17:58:35,657 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-06 17:58:35,658 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-06 17:58:35,660 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-06 17:58:35,673 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-06 17:58:35,675 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-06 17:58:35,676 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-06 17:58:35,678 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-06 17:58:35,679 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-06 17:58:35,679 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-06 17:58:35,681 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-06 17:58:35,682 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-06 17:58:35,683 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-06 17:58:35,684 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-06 17:58:35,685 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-06 17:58:35,687 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-06 17:58:35,690 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-06 17:58:35,691 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-06 17:58:35,693 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-06 17:58:35,694 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-06 17:58:35,695 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-06 17:58:35,698 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-06 17:58:35,702 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-06 17:58:35,703 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-06 17:58:35,704 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-06 17:58:35,705 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-06 17:58:35,706 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-06 17:58:35,706 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-06 17:58:35,707 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-06 17:58:35,708 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-06 17:58:35,708 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-06 17:58:35,709 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-06 17:58:35,710 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-06 17:58:35,711 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 17:58:35,744 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-06 17:58:35,744 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-06 17:58:35,747 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-06 17:58:35,749 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-06 17:58:35,749 INFO L138 SettingsManager]: * Use SBE=true [2021-01-06 17:58:35,749 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-06 17:58:35,750 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-06 17:58:35,750 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-06 17:58:35,750 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-06 17:58:35,750 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-06 17:58:35,750 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-06 17:58:35,751 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-06 17:58:35,751 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-06 17:58:35,751 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-06 17:58:35,751 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-06 17:58:35,751 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-06 17:58:35,752 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-06 17:58:35,752 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 17:58:35,752 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-06 17:58:35,752 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-06 17:58:35,752 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-06 17:58:35,753 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-06 17:58:35,753 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-06 17:58:35,754 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-06 17:58:35,754 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-06 17:58:35,754 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-06 17:58:36,180 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-06 17:58:36,217 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-06 17:58:36,222 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-06 17:58:36,223 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-06 17:58:36,224 INFO L275 PluginConnector]: CDTParser initialized [2021-01-06 17:58:36,225 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/ps2-ll_valuebound1.c [2021-01-06 17:58:36,334 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/fa3dc9126/58c0fcae1e814155988e8dad6843b3ec/FLAG5a072159d [2021-01-06 17:58:36,867 INFO L306 CDTParser]: Found 1 translation units. [2021-01-06 17:58:36,868 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/ps2-ll_valuebound1.c [2021-01-06 17:58:36,875 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/fa3dc9126/58c0fcae1e814155988e8dad6843b3ec/FLAG5a072159d [2021-01-06 17:58:37,257 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/fa3dc9126/58c0fcae1e814155988e8dad6843b3ec [2021-01-06 17:58:37,262 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-06 17:58:37,264 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-06 17:58:37,267 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-06 17:58:37,267 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-06 17:58:37,271 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-06 17:58:37,272 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 05:58:37" (1/1) ... [2021-01-06 17:58:37,273 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10c238a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:58:37, skipping insertion in model container [2021-01-06 17:58:37,274 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 05:58:37" (1/1) ... [2021-01-06 17:58:37,282 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-06 17:58:37,297 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-01-06 17:58:37,438 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,] [2021-01-06 17:58:37,453 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 17:58:37,463 INFO L203 MainTranslator]: Completed pre-run [2021-01-06 17:58:37,476 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,] [2021-01-06 17:58:37,482 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 17:58:37,495 INFO L208 MainTranslator]: Completed translation [2021-01-06 17:58:37,495 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:58:37 WrapperNode [2021-01-06 17:58:37,496 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-06 17:58:37,497 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-06 17:58:37,497 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-06 17:58:37,497 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-06 17:58:37,504 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:58:37" (1/1) ... [2021-01-06 17:58:37,511 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:58:37" (1/1) ... [2021-01-06 17:58:37,530 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-06 17:58:37,531 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-06 17:58:37,531 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-06 17:58:37,531 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-06 17:58:37,540 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:58:37" (1/1) ... [2021-01-06 17:58:37,540 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:58:37" (1/1) ... [2021-01-06 17:58:37,542 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:58:37" (1/1) ... [2021-01-06 17:58:37,542 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:58:37" (1/1) ... [2021-01-06 17:58:37,546 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:58:37" (1/1) ... [2021-01-06 17:58:37,550 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:58:37" (1/1) ... [2021-01-06 17:58:37,551 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:58:37" (1/1) ... [2021-01-06 17:58:37,553 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-06 17:58:37,554 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-06 17:58:37,554 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-06 17:58:37,554 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-06 17:58:37,555 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:58:37" (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 17:58:37,657 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-06 17:58:37,658 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-06 17:58:37,658 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-06 17:58:37,658 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-06 17:58:37,987 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-06 17:58:37,988 INFO L299 CfgBuilder]: Removed 11 assume(true) statements. [2021-01-06 17:58:37,989 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:58:37 BoogieIcfgContainer [2021-01-06 17:58:37,990 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-06 17:58:37,993 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-06 17:58:37,994 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-06 17:58:37,998 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-06 17:58:38,000 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.01 05:58:37" (1/3) ... [2021-01-06 17:58:38,001 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@667a4541 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 05:58:38, skipping insertion in model container [2021-01-06 17:58:38,002 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:58:37" (2/3) ... [2021-01-06 17:58:38,002 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@667a4541 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 05:58:38, skipping insertion in model container [2021-01-06 17:58:38,002 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:58:37" (3/3) ... [2021-01-06 17:58:38,004 INFO L111 eAbstractionObserver]: Analyzing ICFG ps2-ll_valuebound1.c [2021-01-06 17:58:38,011 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-06 17:58:38,016 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2021-01-06 17:58:38,036 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-01-06 17:58:38,078 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-06 17:58:38,079 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-06 17:58:38,079 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-06 17:58:38,079 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-06 17:58:38,079 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-06 17:58:38,079 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-06 17:58:38,079 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-06 17:58:38,080 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-06 17:58:38,118 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2021-01-06 17:58:38,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-01-06 17:58:38,124 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:58:38,125 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:58:38,127 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:58:38,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:58:38,135 INFO L82 PathProgramCache]: Analyzing trace with hash 1804972333, now seen corresponding path program 1 times [2021-01-06 17:58:38,162 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:58:38,163 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743327671] [2021-01-06 17:58:38,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:58:38,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:58:38,369 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 17:58:38,370 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743327671] [2021-01-06 17:58:38,371 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:58:38,371 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-06 17:58:38,372 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623863195] [2021-01-06 17:58:38,378 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-01-06 17:58:38,379 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:58:38,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-01-06 17:58:38,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-01-06 17:58:38,401 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 2 states. [2021-01-06 17:58:38,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:58:38,422 INFO L93 Difference]: Finished difference Result 31 states and 40 transitions. [2021-01-06 17:58:38,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-01-06 17:58:38,424 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 7 [2021-01-06 17:58:38,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:58:38,443 INFO L225 Difference]: With dead ends: 31 [2021-01-06 17:58:38,444 INFO L226 Difference]: Without dead ends: 13 [2021-01-06 17:58:38,454 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 17:58:38,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-01-06 17:58:38,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-01-06 17:58:38,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-01-06 17:58:38,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2021-01-06 17:58:38,491 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 7 [2021-01-06 17:58:38,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:58:38,492 INFO L481 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2021-01-06 17:58:38,492 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-01-06 17:58:38,492 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2021-01-06 17:58:38,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-01-06 17:58:38,493 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:58:38,493 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:58:38,494 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-06 17:58:38,494 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:58:38,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:58:38,497 INFO L82 PathProgramCache]: Analyzing trace with hash 1806819375, now seen corresponding path program 1 times [2021-01-06 17:58:38,497 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:58:38,497 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360398006] [2021-01-06 17:58:38,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:58:38,541 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:58:38,541 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [955982888] [2021-01-06 17:58:38,541 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 17:58:38,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:58:38,619 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 15 conjunts are in the unsatisfiable core [2021-01-06 17:58:38,626 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:58:38,728 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 17:58:38,729 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360398006] [2021-01-06 17:58:38,729 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:58:38,729 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [955982888] [2021-01-06 17:58:38,730 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:58:38,730 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 17:58:38,732 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729609315] [2021-01-06 17:58:38,734 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 17:58:38,734 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:58:38,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 17:58:38,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-01-06 17:58:38,736 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 5 states. [2021-01-06 17:58:38,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:58:38,841 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2021-01-06 17:58:38,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 17:58:38,842 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2021-01-06 17:58:38,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:58:38,842 INFO L225 Difference]: With dead ends: 23 [2021-01-06 17:58:38,843 INFO L226 Difference]: Without dead ends: 17 [2021-01-06 17:58:38,844 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 [2021-01-06 17:58:38,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-01-06 17:58:38,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 16. [2021-01-06 17:58:38,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-01-06 17:58:38,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2021-01-06 17:58:38,850 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 7 [2021-01-06 17:58:38,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:58:38,850 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2021-01-06 17:58:38,850 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 17:58:38,850 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2021-01-06 17:58:38,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-01-06 17:58:38,851 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:58:38,851 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:58:39,064 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-01-06 17:58:39,065 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:58:39,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:58:39,067 INFO L82 PathProgramCache]: Analyzing trace with hash -1864186656, now seen corresponding path program 1 times [2021-01-06 17:58:39,067 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:58:39,068 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984520666] [2021-01-06 17:58:39,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:58:39,079 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:58:39,080 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [934397121] [2021-01-06 17:58:39,080 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 17:58:39,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:58:39,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 19 conjunts are in the unsatisfiable core [2021-01-06 17:58:39,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:58:39,233 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 17:58:39,234 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984520666] [2021-01-06 17:58:39,234 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:58:39,234 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [934397121] [2021-01-06 17:58:39,235 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:58:39,235 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-01-06 17:58:39,235 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920914233] [2021-01-06 17:58:39,236 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 17:58:39,236 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:58:39,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 17:58:39,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-06 17:58:39,237 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 6 states. [2021-01-06 17:58:39,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:58:39,357 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions. [2021-01-06 17:58:39,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-06 17:58:39,358 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2021-01-06 17:58:39,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:58:39,359 INFO L225 Difference]: With dead ends: 26 [2021-01-06 17:58:39,359 INFO L226 Difference]: Without dead ends: 20 [2021-01-06 17:58:39,360 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-01-06 17:58:39,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-01-06 17:58:39,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 19. [2021-01-06 17:58:39,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2021-01-06 17:58:39,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2021-01-06 17:58:39,366 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 10 [2021-01-06 17:58:39,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:58:39,366 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2021-01-06 17:58:39,367 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 17:58:39,367 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2021-01-06 17:58:39,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-01-06 17:58:39,367 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:58:39,368 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1] [2021-01-06 17:58:39,582 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:58:39,583 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:58:39,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:58:39,585 INFO L82 PathProgramCache]: Analyzing trace with hash -2052598129, now seen corresponding path program 2 times [2021-01-06 17:58:39,585 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:58:39,587 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048296162] [2021-01-06 17:58:39,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:58:39,611 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:58:39,611 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [115807042] [2021-01-06 17:58:39,611 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 [2021-01-06 17:58:39,662 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 17:58:39,662 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:58:39,663 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 8 conjunts are in the unsatisfiable core [2021-01-06 17:58:39,665 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:58:39,758 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:58:39,759 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048296162] [2021-01-06 17:58:39,759 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:58:39,759 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [115807042] [2021-01-06 17:58:39,760 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:58:39,760 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-06 17:58:39,761 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833196289] [2021-01-06 17:58:39,761 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 17:58:39,763 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:58:39,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 17:58:39,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-01-06 17:58:39,765 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 6 states. [2021-01-06 17:58:39,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:58:39,870 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2021-01-06 17:58:39,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 17:58:39,870 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2021-01-06 17:58:39,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:58:39,871 INFO L225 Difference]: With dead ends: 19 [2021-01-06 17:58:39,871 INFO L226 Difference]: Without dead ends: 0 [2021-01-06 17:58:39,872 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 [2021-01-06 17:58:39,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-01-06 17:58:39,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-01-06 17:58:39,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-01-06 17:58:39,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-01-06 17:58:39,874 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2021-01-06 17:58:39,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:58:39,874 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-01-06 17:58:39,874 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 17:58:39,874 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-01-06 17:58:39,875 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-01-06 17:58:40,088 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:58:40,092 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-01-06 17:58:40,234 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-01-06 17:58:40,235 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))) [2021-01-06 17:58:40,235 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2021-01-06 17:58:40,235 INFO L189 CegarLoopUtils]: For program point L27-3(lines 27 36) no Hoare annotation was computed. [2021-01-06 17:58:40,236 INFO L189 CegarLoopUtils]: For program point L11(lines 11 12) no Hoare annotation was computed. [2021-01-06 17:58:40,236 INFO L189 CegarLoopUtils]: For program point L11-1(lines 11 12) no Hoare annotation was computed. [2021-01-06 17:58:40,236 INFO L189 CegarLoopUtils]: For program point L7(line 7) no Hoare annotation was computed. [2021-01-06 17:58:40,236 INFO L189 CegarLoopUtils]: For program point L-1(line -1) no Hoare annotation was computed. [2021-01-06 17:58:40,236 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-01-06 17:58:40,237 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-01-06 17:58:40,237 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2021-01-06 17:58:40,237 INFO L189 CegarLoopUtils]: For program point L10(lines 10 13) no Hoare annotation was computed. [2021-01-06 17:58:40,237 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))) [2021-01-06 17:58:40,238 INFO L189 CegarLoopUtils]: For program point L10-3(lines 10 13) no Hoare annotation was computed. [2021-01-06 17:58:40,238 INFO L192 CegarLoopUtils]: At program point L39(lines 17 40) the Hoare annotation is: true [2021-01-06 17:58:40,238 INFO L189 CegarLoopUtils]: For program point L6(lines 6 8) no Hoare annotation was computed. [2021-01-06 17:58:40,238 INFO L192 CegarLoopUtils]: At program point L10-5(lines 9 15) the Hoare annotation is: true [2021-01-06 17:58:40,258 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.01 05:58:40 BoogieIcfgContainer [2021-01-06 17:58:40,259 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-01-06 17:58:40,259 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-01-06 17:58:40,259 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-01-06 17:58:40,260 INFO L275 PluginConnector]: Witness Printer initialized [2021-01-06 17:58:40,260 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:58:37" (3/4) ... [2021-01-06 17:58:40,264 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-01-06 17:58:40,275 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2021-01-06 17:58:40,276 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-01-06 17:58:40,276 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-01-06 17:58:40,276 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-01-06 17:58:40,320 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/nla-digbench-scaling/ps2-ll_valuebound1.c-witness.graphml [2021-01-06 17:58:40,320 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-01-06 17:58:40,322 INFO L168 Benchmark]: Toolchain (without parser) took 3057.64 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 125.7 MB in the beginning and 135.5 MB in the end (delta: -9.8 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2021-01-06 17:58:40,323 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 151.0 MB. Free memory is still 122.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-01-06 17:58:40,324 INFO L168 Benchmark]: CACSL2BoogieTranslator took 229.38 ms. Allocated memory is still 151.0 MB. Free memory was 125.6 MB in the beginning and 115.9 MB in the end (delta: 9.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-01-06 17:58:40,325 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.31 ms. Allocated memory is still 151.0 MB. Free memory was 115.9 MB in the beginning and 114.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-01-06 17:58:40,325 INFO L168 Benchmark]: Boogie Preprocessor took 22.23 ms. Allocated memory is still 151.0 MB. Free memory was 114.5 MB in the beginning and 113.4 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-01-06 17:58:40,326 INFO L168 Benchmark]: RCFGBuilder took 436.16 ms. Allocated memory is still 151.0 MB. Free memory was 113.4 MB in the beginning and 101.2 MB in the end (delta: 12.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-01-06 17:58:40,327 INFO L168 Benchmark]: TraceAbstraction took 2265.42 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 100.8 MB in the beginning and 137.6 MB in the end (delta: -36.8 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-01-06 17:58:40,328 INFO L168 Benchmark]: Witness Printer took 61.14 ms. Allocated memory is still 181.4 MB. Free memory was 137.6 MB in the beginning and 135.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-01-06 17:58:40,332 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 151.0 MB. Free memory is still 122.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 229.38 ms. Allocated memory is still 151.0 MB. Free memory was 125.6 MB in the beginning and 115.9 MB in the end (delta: 9.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 33.31 ms. Allocated memory is still 151.0 MB. Free memory was 115.9 MB in the beginning and 114.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 22.23 ms. Allocated memory is still 151.0 MB. Free memory was 114.5 MB in the beginning and 113.4 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 436.16 ms. Allocated memory is still 151.0 MB. Free memory was 113.4 MB in the beginning and 101.2 MB in the end (delta: 12.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2265.42 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 100.8 MB in the beginning and 137.6 MB in the end (delta: -36.8 MB). There was no memory consumed. Max. memory is 8.0 GB. * Witness Printer took 61.14 ms. Allocated memory is still 181.4 MB. Free memory was 137.6 MB in the beginning and 135.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 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: 2.0s, OverallIterations: 4, TraceHistogramMax: 3, AutomataDifference: 0.4s, 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, 0.3s 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...