/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/prodbin-ll_valuebound1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-06 17:57:39,763 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-06 17:57:39,766 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-06 17:57:39,800 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-06 17:57:39,801 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-06 17:57:39,803 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-06 17:57:39,805 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-06 17:57:39,807 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-06 17:57:39,810 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-06 17:57:39,811 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-06 17:57:39,812 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-06 17:57:39,814 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-06 17:57:39,814 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-06 17:57:39,816 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-06 17:57:39,817 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-06 17:57:39,819 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-06 17:57:39,820 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-06 17:57:39,822 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-06 17:57:39,824 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-06 17:57:39,827 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-06 17:57:39,829 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-06 17:57:39,830 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-06 17:57:39,832 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-06 17:57:39,833 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-06 17:57:39,848 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-06 17:57:39,852 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-06 17:57:39,853 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-06 17:57:39,854 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-06 17:57:39,855 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-06 17:57:39,857 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-06 17:57:39,857 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-06 17:57:39,858 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-06 17:57:39,859 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-06 17:57:39,859 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-06 17:57:39,860 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-06 17:57:39,861 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-06 17:57:39,862 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 17:57:39,892 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-06 17:57:39,892 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-06 17:57:39,894 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-06 17:57:39,894 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-06 17:57:39,895 INFO L138 SettingsManager]: * Use SBE=true [2021-01-06 17:57:39,895 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-06 17:57:39,895 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-06 17:57:39,895 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-06 17:57:39,896 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-06 17:57:39,896 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-06 17:57:39,896 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-06 17:57:39,897 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-06 17:57:39,897 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-06 17:57:39,897 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-06 17:57:39,897 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-06 17:57:39,898 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-06 17:57:39,898 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-06 17:57:39,898 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 17:57:39,899 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-06 17:57:39,899 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-06 17:57:39,899 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-06 17:57:39,899 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-06 17:57:39,899 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-06 17:57:39,900 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-06 17:57:39,900 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-06 17:57:39,900 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-06 17:57:40,296 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-06 17:57:40,330 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-06 17:57:40,334 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-06 17:57:40,335 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-06 17:57:40,336 INFO L275 PluginConnector]: CDTParser initialized [2021-01-06 17:57:40,337 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_valuebound1.c [2021-01-06 17:57:40,407 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/b2964a4e7/65c840e2381b40978e6bdc7587220d7b/FLAG8e1179eb0 [2021-01-06 17:57:41,103 INFO L306 CDTParser]: Found 1 translation units. [2021-01-06 17:57:41,104 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_valuebound1.c [2021-01-06 17:57:41,111 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/b2964a4e7/65c840e2381b40978e6bdc7587220d7b/FLAG8e1179eb0 [2021-01-06 17:57:41,469 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/b2964a4e7/65c840e2381b40978e6bdc7587220d7b [2021-01-06 17:57:41,476 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-06 17:57:41,479 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-06 17:57:41,481 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-06 17:57:41,481 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-06 17:57:41,485 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-06 17:57:41,486 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 05:57:41" (1/1) ... [2021-01-06 17:57:41,487 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10bc2b49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:57:41, skipping insertion in model container [2021-01-06 17:57:41,487 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 05:57:41" (1/1) ... [2021-01-06 17:57:41,496 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-06 17:57:41,513 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-01-06 17:57:41,674 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/prodbin-ll_valuebound1.c[537,550] left hand side expression in assignment: lhs: VariableLHS[~a~0,] left hand side expression in assignment: lhs: VariableLHS[~b~0,] left hand side expression in assignment: lhs: VariableLHS[~x~0,] left hand side expression in assignment: lhs: VariableLHS[~y~0,] left hand side expression in assignment: lhs: VariableLHS[~z~0,] left hand side expression in assignment: lhs: VariableLHS[~z~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[~y~0,] [2021-01-06 17:57:41,693 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 17:57:41,703 INFO L203 MainTranslator]: Completed pre-run [2021-01-06 17:57:41,717 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/prodbin-ll_valuebound1.c[537,550] left hand side expression in assignment: lhs: VariableLHS[~a~0,] left hand side expression in assignment: lhs: VariableLHS[~b~0,] left hand side expression in assignment: lhs: VariableLHS[~x~0,] left hand side expression in assignment: lhs: VariableLHS[~y~0,] left hand side expression in assignment: lhs: VariableLHS[~z~0,] left hand side expression in assignment: lhs: VariableLHS[~z~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[~y~0,] [2021-01-06 17:57:41,724 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 17:57:41,741 INFO L208 MainTranslator]: Completed translation [2021-01-06 17:57:41,742 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:57:41 WrapperNode [2021-01-06 17:57:41,742 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-06 17:57:41,744 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-06 17:57:41,744 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-06 17:57:41,744 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-06 17:57:41,757 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:57:41" (1/1) ... [2021-01-06 17:57:41,765 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:57:41" (1/1) ... [2021-01-06 17:57:41,789 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-06 17:57:41,790 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-06 17:57:41,790 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-06 17:57:41,790 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-06 17:57:41,801 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:57:41" (1/1) ... [2021-01-06 17:57:41,801 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:57:41" (1/1) ... [2021-01-06 17:57:41,803 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:57:41" (1/1) ... [2021-01-06 17:57:41,803 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:57:41" (1/1) ... [2021-01-06 17:57:41,807 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:57:41" (1/1) ... [2021-01-06 17:57:41,812 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:57:41" (1/1) ... [2021-01-06 17:57:41,813 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:57:41" (1/1) ... [2021-01-06 17:57:41,815 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-06 17:57:41,816 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-06 17:57:41,817 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-06 17:57:41,817 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-06 17:57:41,821 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:57:41" (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 17:57:41,938 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-06 17:57:41,939 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-06 17:57:41,939 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-06 17:57:41,939 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-06 17:57:42,272 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-06 17:57:42,273 INFO L299 CfgBuilder]: Removed 15 assume(true) statements. [2021-01-06 17:57:42,278 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:57:42 BoogieIcfgContainer [2021-01-06 17:57:42,278 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-06 17:57:42,283 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-06 17:57:42,283 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-06 17:57:42,290 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-06 17:57:42,291 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.01 05:57:41" (1/3) ... [2021-01-06 17:57:42,295 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b1341bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 05:57:42, skipping insertion in model container [2021-01-06 17:57:42,296 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:57:41" (2/3) ... [2021-01-06 17:57:42,296 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b1341bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 05:57:42, skipping insertion in model container [2021-01-06 17:57:42,296 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:57:42" (3/3) ... [2021-01-06 17:57:42,300 INFO L111 eAbstractionObserver]: Analyzing ICFG prodbin-ll_valuebound1.c [2021-01-06 17:57:42,315 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-06 17:57:42,320 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2021-01-06 17:57:42,343 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-01-06 17:57:42,373 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-06 17:57:42,389 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-06 17:57:42,389 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-06 17:57:42,390 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-06 17:57:42,392 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-06 17:57:42,392 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-06 17:57:42,393 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-06 17:57:42,393 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-06 17:57:42,417 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2021-01-06 17:57:42,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-01-06 17:57:42,425 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:57:42,426 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:57:42,427 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:57:42,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:57:42,437 INFO L82 PathProgramCache]: Analyzing trace with hash 330581779, now seen corresponding path program 1 times [2021-01-06 17:57:42,450 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:57:42,451 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623600049] [2021-01-06 17:57:42,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:57:42,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:57:42,669 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 17:57:42,670 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623600049] [2021-01-06 17:57:42,671 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:57:42,671 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-06 17:57:42,673 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176401643] [2021-01-06 17:57:42,678 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-01-06 17:57:42,678 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:57:42,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-01-06 17:57:42,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-01-06 17:57:42,697 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 2 states. [2021-01-06 17:57:42,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:57:42,718 INFO L93 Difference]: Finished difference Result 43 states and 58 transitions. [2021-01-06 17:57:42,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-01-06 17:57:42,719 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2021-01-06 17:57:42,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:57:42,729 INFO L225 Difference]: With dead ends: 43 [2021-01-06 17:57:42,730 INFO L226 Difference]: Without dead ends: 19 [2021-01-06 17:57:42,733 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 17:57:42,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-01-06 17:57:42,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-01-06 17:57:42,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2021-01-06 17:57:42,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2021-01-06 17:57:42,772 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 11 [2021-01-06 17:57:42,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:57:42,773 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2021-01-06 17:57:42,773 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-01-06 17:57:42,773 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2021-01-06 17:57:42,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-01-06 17:57:42,774 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:57:42,774 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:57:42,775 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-06 17:57:42,775 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:57:42,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:57:42,776 INFO L82 PathProgramCache]: Analyzing trace with hash -1507472743, now seen corresponding path program 1 times [2021-01-06 17:57:42,776 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:57:42,777 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032906354] [2021-01-06 17:57:42,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:57:42,799 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:57:42,799 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2082887608] [2021-01-06 17:57:42,800 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 17:57:42,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:57:42,882 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 17 conjunts are in the unsatisfiable core [2021-01-06 17:57:42,888 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:57:43,070 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 17:57:43,071 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032906354] [2021-01-06 17:57:43,071 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:57:43,072 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2082887608] [2021-01-06 17:57:43,072 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:57:43,072 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-06 17:57:43,073 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602201436] [2021-01-06 17:57:43,074 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 17:57:43,074 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:57:43,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 17:57:43,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-01-06 17:57:43,076 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand 6 states. [2021-01-06 17:57:43,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:57:43,260 INFO L93 Difference]: Finished difference Result 32 states and 34 transitions. [2021-01-06 17:57:43,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-01-06 17:57:43,261 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2021-01-06 17:57:43,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:57:43,262 INFO L225 Difference]: With dead ends: 32 [2021-01-06 17:57:43,262 INFO L226 Difference]: Without dead ends: 30 [2021-01-06 17:57:43,264 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-01-06 17:57:43,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-01-06 17:57:43,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 21. [2021-01-06 17:57:43,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-01-06 17:57:43,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2021-01-06 17:57:43,271 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 11 [2021-01-06 17:57:43,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:57:43,271 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2021-01-06 17:57:43,271 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 17:57:43,271 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2021-01-06 17:57:43,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-01-06 17:57:43,272 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:57:43,272 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:57:43,486 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-01-06 17:57:43,486 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:57:43,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:57:43,488 INFO L82 PathProgramCache]: Analyzing trace with hash -937526112, now seen corresponding path program 1 times [2021-01-06 17:57:43,488 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:57:43,489 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905574291] [2021-01-06 17:57:43,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:57:43,517 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:57:43,518 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [694121691] [2021-01-06 17:57:43,519 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 17:57:43,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:57:43,601 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 7 conjunts are in the unsatisfiable core [2021-01-06 17:57:43,603 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:57:43,695 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 17:57:43,696 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905574291] [2021-01-06 17:57:43,696 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:57:43,696 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [694121691] [2021-01-06 17:57:43,696 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:57:43,697 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 17:57:43,697 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303943018] [2021-01-06 17:57:43,697 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 17:57:43,698 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:57:43,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 17:57:43,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-01-06 17:57:43,701 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand 5 states. [2021-01-06 17:57:43,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:57:43,858 INFO L93 Difference]: Finished difference Result 28 states and 30 transitions. [2021-01-06 17:57:43,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 17:57:43,859 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2021-01-06 17:57:43,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:57:43,860 INFO L225 Difference]: With dead ends: 28 [2021-01-06 17:57:43,860 INFO L226 Difference]: Without dead ends: 24 [2021-01-06 17:57:43,861 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-01-06 17:57:43,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-01-06 17:57:43,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 22. [2021-01-06 17:57:43,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2021-01-06 17:57:43,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2021-01-06 17:57:43,866 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 14 [2021-01-06 17:57:43,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:57:43,867 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2021-01-06 17:57:43,867 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 17:57:43,867 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2021-01-06 17:57:43,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-01-06 17:57:43,868 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:57:43,868 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:57:44,079 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:57:44,080 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:57:44,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:57:44,082 INFO L82 PathProgramCache]: Analyzing trace with hash 1030171456, now seen corresponding path program 1 times [2021-01-06 17:57:44,083 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:57:44,083 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018679338] [2021-01-06 17:57:44,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:57:44,101 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:57:44,102 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [231946776] [2021-01-06 17:57:44,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:57:44,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:57:44,202 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 40 conjunts are in the unsatisfiable core [2021-01-06 17:57:44,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:57:44,906 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2021-01-06 17:57:44,918 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2021-01-06 17:57:45,109 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 17:57:45,123 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 17:57:45,125 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018679338] [2021-01-06 17:57:45,125 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:57:45,125 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [231946776] [2021-01-06 17:57:45,126 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: null [2021-01-06 17:57:45,126 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:57:45,126 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-01-06 17:57:45,126 ERROR L205 FreeRefinementEngine]: Strategy CAMEL failed to provide any proof altough trace is infeasible [2021-01-06 17:57:45,126 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-01-06 17:57:45,344 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:57:45,362 WARN L227 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2021-01-06 17:57:45,363 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.01 05:57:45 BoogieIcfgContainer [2021-01-06 17:57:45,363 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-01-06 17:57:45,364 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-01-06 17:57:45,364 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-01-06 17:57:45,364 INFO L275 PluginConnector]: Witness Printer initialized [2021-01-06 17:57:45,365 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:57:42" (3/4) ... [2021-01-06 17:57:45,369 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-01-06 17:57:45,369 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-01-06 17:57:45,371 INFO L168 Benchmark]: Toolchain (without parser) took 3892.48 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 125.9 MB in the beginning and 86.7 MB in the end (delta: 39.2 MB). Peak memory consumption was 70.8 MB. Max. memory is 8.0 GB. [2021-01-06 17:57:45,372 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 151.0 MB. Free memory is still 123.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-01-06 17:57:45,373 INFO L168 Benchmark]: CACSL2BoogieTranslator took 262.23 ms. Allocated memory is still 151.0 MB. Free memory was 125.7 MB in the beginning and 115.8 MB in the end (delta: 9.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-01-06 17:57:45,374 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.56 ms. Allocated memory is still 151.0 MB. Free memory was 115.8 MB in the beginning and 114.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-01-06 17:57:45,375 INFO L168 Benchmark]: Boogie Preprocessor took 25.53 ms. Allocated memory is still 151.0 MB. Free memory was 114.1 MB in the beginning and 113.1 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-01-06 17:57:45,375 INFO L168 Benchmark]: RCFGBuilder took 461.85 ms. Allocated memory is still 151.0 MB. Free memory was 113.1 MB in the beginning and 99.6 MB in the end (delta: 13.4 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2021-01-06 17:57:45,376 INFO L168 Benchmark]: TraceAbstraction took 3080.17 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 99.3 MB in the beginning and 86.7 MB in the end (delta: 12.6 MB). Peak memory consumption was 44.6 MB. Max. memory is 8.0 GB. [2021-01-06 17:57:45,377 INFO L168 Benchmark]: Witness Printer took 5.23 ms. Allocated memory is still 181.4 MB. Free memory is still 86.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-01-06 17:57:45,381 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 151.0 MB. Free memory is still 123.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 262.23 ms. Allocated memory is still 151.0 MB. Free memory was 125.7 MB in the beginning and 115.8 MB in the end (delta: 9.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 45.56 ms. Allocated memory is still 151.0 MB. Free memory was 115.8 MB in the beginning and 114.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 25.53 ms. Allocated memory is still 151.0 MB. Free memory was 114.1 MB in the beginning and 113.1 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 461.85 ms. Allocated memory is still 151.0 MB. Free memory was 113.1 MB in the beginning and 99.6 MB in the end (delta: 13.4 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 3080.17 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 99.3 MB in the beginning and 86.7 MB in the end (delta: 12.6 MB). Peak memory consumption was 44.6 MB. Max. memory is 8.0 GB. * Witness Printer took 5.23 ms. Allocated memory is still 181.4 MB. Free memory is still 86.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 15]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L21] int a, b; [L22] long long x, y, z; [L24] a = __VERIFIER_nondet_int() [L10] COND FALSE !(!cond) [L26] b = __VERIFIER_nondet_int() [L10] COND FALSE !(!cond) [L10] COND FALSE !(!cond) [L30] x = a [L31] y = b [L32] z = 0 [L34] COND TRUE 1 [L13] COND FALSE !(!(cond)) [L36] COND FALSE !(!(y != 0)) [L39] COND TRUE y % 2 == 1 [L40] z = z + x [L41] y = y - 1 [L43] x = 2 * x [L44] y = y / 2 [L34] COND TRUE 1 [L13] COND TRUE !(cond) [L15] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 23 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 2.9s, OverallIterations: 4, TraceHistogramMax: 2, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 48 SDtfs, 71 SDslu, 41 SDs, 0 SdLazy, 69 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 30 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred in iteration=0, 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, 3 MinimizatonAttempts, 11 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 36 NumberOfCodeBlocks, 36 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 33 ConstructedInterpolants, 0 QuantifiedInterpolants, 1335 SizeOfPredicates, 11 NumberOfNonLiveVariables, 141 ConjunctsInSsa, 24 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 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 could not prove your program: unable to determine feasibility of some traces Received shutdown request...