/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/freire2_unwindbound2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 07:44:25,626 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 07:44:25,630 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 07:44:25,687 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 07:44:25,688 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 07:44:25,692 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 07:44:25,696 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 07:44:25,702 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 07:44:25,705 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 07:44:25,713 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 07:44:25,714 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 07:44:25,716 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 07:44:25,716 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 07:44:25,717 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 07:44:25,719 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 07:44:25,730 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 07:44:25,731 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 07:44:25,732 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 07:44:25,738 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 07:44:25,745 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 07:44:25,749 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 07:44:25,751 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 07:44:25,752 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 07:44:25,753 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 07:44:25,756 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-23 07:44:25,760 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-23 07:44:25,761 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-23 07:44:25,762 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-23 07:44:25,763 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-23 07:44:25,764 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-23 07:44:25,764 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-23 07:44:25,765 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-23 07:44:25,765 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-23 07:44:25,766 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 07:44:25,767 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 07:44:25,767 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 07:44:25,768 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-23 07:44:25,795 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 07:44:25,796 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 07:44:25,797 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 07:44:25,797 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 07:44:25,798 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 07:44:25,798 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 07:44:25,798 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 07:44:25,798 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 07:44:25,799 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 07:44:25,799 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 07:44:25,799 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 07:44:25,799 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 07:44:25,799 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 07:44:25,800 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 07:44:25,800 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 07:44:25,800 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 07:44:25,800 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 07:44:25,800 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 07:44:25,801 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 07:44:25,801 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 07:44:25,801 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 07:44:25,801 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 07:44:25,801 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 07:44:25,802 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 07:44:25,802 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 07:44:25,802 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 07:44:26,276 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 07:44:26,318 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 07:44:26,320 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 07:44:26,322 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 07:44:26,322 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 07:44:26,323 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound2.c [2020-12-23 07:44:26,408 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/267410a62/40f5d299feb14adcbd09a5663284da33/FLAG7405dbdfc [2020-12-23 07:44:27,141 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 07:44:27,141 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound2.c [2020-12-23 07:44:27,150 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/267410a62/40f5d299feb14adcbd09a5663284da33/FLAG7405dbdfc [2020-12-23 07:44:27,476 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/267410a62/40f5d299feb14adcbd09a5663284da33 [2020-12-23 07:44:27,482 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 07:44:27,485 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 07:44:27,487 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 07:44:27,487 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 07:44:27,491 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 07:44:27,491 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 07:44:27" (1/1) ... [2020-12-23 07:44:27,494 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9f2542f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:44:27, skipping insertion in model container [2020-12-23 07:44:27,494 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 07:44:27" (1/1) ... [2020-12-23 07:44:27,502 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 07:44:27,524 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-23 07:44:27,677 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/freire2_unwindbound2.c[709,722] left hand side expression in assignment: lhs: VariableLHS[~a~0,] left hand side expression in assignment: lhs: VariableLHS[~x~0,] left hand side expression in assignment: lhs: VariableLHS[~s~0,] left hand side expression in assignment: lhs: VariableLHS[~r~0,] left hand side expression in assignment: lhs: VariableLHS[~x~0,] left hand side expression in assignment: lhs: VariableLHS[~s~0,] left hand side expression in assignment: lhs: VariableLHS[~r~0,] [2020-12-23 07:44:27,726 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 07:44:27,737 INFO L203 MainTranslator]: Completed pre-run [2020-12-23 07:44:27,756 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/freire2_unwindbound2.c[709,722] left hand side expression in assignment: lhs: VariableLHS[~a~0,] left hand side expression in assignment: lhs: VariableLHS[~x~0,] left hand side expression in assignment: lhs: VariableLHS[~s~0,] left hand side expression in assignment: lhs: VariableLHS[~r~0,] left hand side expression in assignment: lhs: VariableLHS[~x~0,] left hand side expression in assignment: lhs: VariableLHS[~s~0,] left hand side expression in assignment: lhs: VariableLHS[~r~0,] [2020-12-23 07:44:27,795 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 07:44:27,816 INFO L208 MainTranslator]: Completed translation [2020-12-23 07:44:27,817 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:44:27 WrapperNode [2020-12-23 07:44:27,817 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 07:44:27,819 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 07:44:27,819 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 07:44:27,819 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 07:44:27,828 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:44:27" (1/1) ... [2020-12-23 07:44:27,837 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:44:27" (1/1) ... [2020-12-23 07:44:27,862 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 07:44:27,863 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 07:44:27,864 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 07:44:27,864 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 07:44:27,874 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:44:27" (1/1) ... [2020-12-23 07:44:27,874 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:44:27" (1/1) ... [2020-12-23 07:44:27,876 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:44:27" (1/1) ... [2020-12-23 07:44:27,877 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:44:27" (1/1) ... [2020-12-23 07:44:27,883 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:44:27" (1/1) ... [2020-12-23 07:44:27,887 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:44:27" (1/1) ... [2020-12-23 07:44:27,889 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:44:27" (1/1) ... [2020-12-23 07:44:27,892 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 07:44:27,893 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 07:44:27,893 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 07:44:27,893 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 07:44:27,894 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:44:27" (1/1) ... No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 07:44:28,007 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 07:44:28,007 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 07:44:28,008 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 07:44:28,008 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 07:44:28,332 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 07:44:28,333 INFO L299 CfgBuilder]: Removed 17 assume(true) statements. [2020-12-23 07:44:28,338 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 07:44:28 BoogieIcfgContainer [2020-12-23 07:44:28,341 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 07:44:28,343 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 07:44:28,343 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 07:44:28,350 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 07:44:28,350 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 07:44:27" (1/3) ... [2020-12-23 07:44:28,354 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46fdc88a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 07:44:28, skipping insertion in model container [2020-12-23 07:44:28,355 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:44:27" (2/3) ... [2020-12-23 07:44:28,355 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46fdc88a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 07:44:28, skipping insertion in model container [2020-12-23 07:44:28,355 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 07:44:28" (3/3) ... [2020-12-23 07:44:28,360 INFO L111 eAbstractionObserver]: Analyzing ICFG freire2_unwindbound2.c [2020-12-23 07:44:28,378 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 07:44:28,387 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-12-23 07:44:28,466 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-12-23 07:44:28,515 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 07:44:28,515 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 07:44:28,515 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 07:44:28,515 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 07:44:28,516 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 07:44:28,516 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 07:44:28,516 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 07:44:28,516 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 07:44:28,541 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2020-12-23 07:44:28,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-23 07:44:28,547 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:44:28,547 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-23 07:44:28,549 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:44:28,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:44:28,557 INFO L82 PathProgramCache]: Analyzing trace with hash 890922791, now seen corresponding path program 1 times [2020-12-23 07:44:28,569 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:44:28,570 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844781803] [2020-12-23 07:44:28,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:44:28,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:44:28,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:44:28,760 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844781803] [2020-12-23 07:44:28,761 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:44:28,761 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 07:44:28,762 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628975213] [2020-12-23 07:44:28,766 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-23 07:44:28,767 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:44:28,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-23 07:44:28,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 07:44:28,785 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 2 states. [2020-12-23 07:44:28,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:44:28,809 INFO L93 Difference]: Finished difference Result 62 states and 78 transitions. [2020-12-23 07:44:28,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-23 07:44:28,811 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2020-12-23 07:44:28,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:44:28,820 INFO L225 Difference]: With dead ends: 62 [2020-12-23 07:44:28,821 INFO L226 Difference]: Without dead ends: 28 [2020-12-23 07:44:28,824 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 07:44:28,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-12-23 07:44:28,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-12-23 07:44:28,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-12-23 07:44:28,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2020-12-23 07:44:28,865 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 6 [2020-12-23 07:44:28,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:44:28,865 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2020-12-23 07:44:28,865 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-23 07:44:28,865 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2020-12-23 07:44:28,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-23 07:44:28,866 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:44:28,866 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-23 07:44:28,867 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 07:44:28,867 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:44:28,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:44:28,868 INFO L82 PathProgramCache]: Analyzing trace with hash 889571274, now seen corresponding path program 1 times [2020-12-23 07:44:28,868 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:44:28,869 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214050033] [2020-12-23 07:44:28,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:44:28,885 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:44:28,885 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1968410051] [2020-12-23 07:44:28,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:44:28,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-23 07:44:28,983 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-23 07:44:29,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-23 07:44:29,013 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-23 07:44:29,049 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-23 07:44:29,049 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-23 07:44:29,263 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-12-23 07:44:29,300 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.12 07:44:29 BoogieIcfgContainer [2020-12-23 07:44:29,300 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-23 07:44:29,301 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-23 07:44:29,301 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-23 07:44:29,301 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-23 07:44:29,302 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 07:44:28" (3/4) ... [2020-12-23 07:44:29,306 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-23 07:44:29,306 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-23 07:44:29,309 INFO L168 Benchmark]: Toolchain (without parser) took 1823.48 ms. Allocated memory is still 151.0 MB. Free memory was 126.2 MB in the beginning and 108.3 MB in the end (delta: 17.9 MB). Peak memory consumption was 18.0 MB. Max. memory is 8.0 GB. [2020-12-23 07:44:29,310 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 151.0 MB. Free memory is still 123.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 07:44:29,313 INFO L168 Benchmark]: CACSL2BoogieTranslator took 330.86 ms. Allocated memory is still 151.0 MB. Free memory was 126.0 MB in the beginning and 115.4 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-12-23 07:44:29,314 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.11 ms. Allocated memory is still 151.0 MB. Free memory was 115.4 MB in the beginning and 113.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-23 07:44:29,316 INFO L168 Benchmark]: Boogie Preprocessor took 28.56 ms. Allocated memory is still 151.0 MB. Free memory was 113.8 MB in the beginning and 112.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-23 07:44:29,318 INFO L168 Benchmark]: RCFGBuilder took 448.47 ms. Allocated memory is still 151.0 MB. Free memory was 112.5 MB in the beginning and 97.8 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2020-12-23 07:44:29,321 INFO L168 Benchmark]: TraceAbstraction took 957.15 ms. Allocated memory is still 151.0 MB. Free memory was 97.4 MB in the beginning and 108.3 MB in the end (delta: -10.9 MB). There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 07:44:29,322 INFO L168 Benchmark]: Witness Printer took 5.60 ms. Allocated memory is still 151.0 MB. Free memory is still 108.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 07:44:29,338 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 151.0 MB. Free memory is still 123.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 330.86 ms. Allocated memory is still 151.0 MB. Free memory was 126.0 MB in the beginning and 115.4 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 44.11 ms. Allocated memory is still 151.0 MB. Free memory was 115.4 MB in the beginning and 113.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 28.56 ms. Allocated memory is still 151.0 MB. Free memory was 113.8 MB in the beginning and 112.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 448.47 ms. Allocated memory is still 151.0 MB. Free memory was 112.5 MB in the beginning and 97.8 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 957.15 ms. Allocated memory is still 151.0 MB. Free memory was 97.4 MB in the beginning and 108.3 MB in the end (delta: -10.9 MB). There was no memory consumed. Max. memory is 8.0 GB. * Witness Printer took 5.60 ms. Allocated memory is still 151.0 MB. Free memory is still 108.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of to_int at line 34. Possible FailurePath: [L24] int counter = 0; VAL [counter=0] [L26] int r; [L27] double a, x, s; [L28] a = __VERIFIER_nondet_double() [L29] x = a [L30] s = 3.25 [L31] r = 1 VAL [counter=0] [L33] EXPR counter++ VAL [counter=1] [L33] COND TRUE counter++<2 [L17] COND TRUE !(cond) VAL [counter=1] [L19] reach_error() VAL [counter=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 32 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.7s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 33 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 5 ConstructedInterpolants, 0 QuantifiedInterpolants, 25 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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...