/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/loops/trex03-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-06 16:40:56,786 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-06 16:40:56,789 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-06 16:40:56,825 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-06 16:40:56,826 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-06 16:40:56,828 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-06 16:40:56,830 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-06 16:40:56,832 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-06 16:40:56,835 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-06 16:40:56,836 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-06 16:40:56,837 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-06 16:40:56,839 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-06 16:40:56,840 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-06 16:40:56,841 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-06 16:40:56,843 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-06 16:40:56,844 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-06 16:40:56,845 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-06 16:40:56,847 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-06 16:40:56,860 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-06 16:40:56,878 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-06 16:40:56,883 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-06 16:40:56,893 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-06 16:40:56,898 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-06 16:40:56,902 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-06 16:40:56,907 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-06 16:40:56,911 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-06 16:40:56,912 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-06 16:40:56,913 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-06 16:40:56,914 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-06 16:40:56,916 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-06 16:40:56,916 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-06 16:40:56,917 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-06 16:40:56,918 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-06 16:40:56,918 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-06 16:40:56,919 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-06 16:40:56,920 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-06 16:40:56,921 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 16:40:56,948 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-06 16:40:56,949 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-06 16:40:56,950 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-06 16:40:56,950 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-06 16:40:56,951 INFO L138 SettingsManager]: * Use SBE=true [2021-01-06 16:40:56,951 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-06 16:40:56,951 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-06 16:40:56,951 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-06 16:40:56,952 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-06 16:40:56,952 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-06 16:40:56,952 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-06 16:40:56,952 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-06 16:40:56,953 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-06 16:40:56,953 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-06 16:40:56,953 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-06 16:40:56,953 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-06 16:40:56,954 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-06 16:40:56,954 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 16:40:56,954 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-06 16:40:56,954 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-06 16:40:56,955 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-06 16:40:56,955 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-06 16:40:56,955 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-06 16:40:56,955 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-06 16:40:56,955 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-06 16:40:56,956 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-06 16:40:57,317 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-06 16:40:57,343 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-06 16:40:57,346 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-06 16:40:57,348 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-06 16:40:57,349 INFO L275 PluginConnector]: CDTParser initialized [2021-01-06 16:40:57,350 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops/trex03-1.c [2021-01-06 16:40:57,442 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/52274c17b/dcd85aa5c93a445c84ccf16d0605c66e/FLAG2f7ade7e1 [2021-01-06 16:40:58,137 INFO L306 CDTParser]: Found 1 translation units. [2021-01-06 16:40:58,138 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/loops/trex03-1.c [2021-01-06 16:40:58,145 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/52274c17b/dcd85aa5c93a445c84ccf16d0605c66e/FLAG2f7ade7e1 [2021-01-06 16:40:58,479 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/52274c17b/dcd85aa5c93a445c84ccf16d0605c66e [2021-01-06 16:40:58,482 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-06 16:40:58,485 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-06 16:40:58,486 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-06 16:40:58,487 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-06 16:40:58,491 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-06 16:40:58,492 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 04:40:58" (1/1) ... [2021-01-06 16:40:58,493 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@469e5a66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:40:58, skipping insertion in model container [2021-01-06 16:40:58,494 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 04:40:58" (1/1) ... [2021-01-06 16:40:58,502 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-06 16:40:58,518 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-01-06 16:40:58,674 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/loops/trex03-1.c[320,333] left hand side expression in assignment: lhs: VariableLHS[~x1~0,] left hand side expression in assignment: lhs: VariableLHS[~x2~0,] left hand side expression in assignment: lhs: VariableLHS[~x3~0,] left hand side expression in assignment: lhs: VariableLHS[~c1~0,] left hand side expression in assignment: lhs: VariableLHS[~c2~0,] [2021-01-06 16:40:58,697 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 16:40:58,713 INFO L203 MainTranslator]: Completed pre-run [2021-01-06 16:40:58,731 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/loops/trex03-1.c[320,333] left hand side expression in assignment: lhs: VariableLHS[~x1~0,] left hand side expression in assignment: lhs: VariableLHS[~x2~0,] left hand side expression in assignment: lhs: VariableLHS[~x3~0,] left hand side expression in assignment: lhs: VariableLHS[~c1~0,] left hand side expression in assignment: lhs: VariableLHS[~c2~0,] [2021-01-06 16:40:58,752 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 16:40:58,772 INFO L208 MainTranslator]: Completed translation [2021-01-06 16:40:58,774 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:40:58 WrapperNode [2021-01-06 16:40:58,774 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-06 16:40:58,778 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-06 16:40:58,778 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-06 16:40:58,778 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-06 16:40:58,788 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:40:58" (1/1) ... [2021-01-06 16:40:58,799 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:40:58" (1/1) ... [2021-01-06 16:40:58,828 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-06 16:40:58,833 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-06 16:40:58,833 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-06 16:40:58,834 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-06 16:40:58,845 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:40:58" (1/1) ... [2021-01-06 16:40:58,846 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:40:58" (1/1) ... [2021-01-06 16:40:58,870 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:40:58" (1/1) ... [2021-01-06 16:40:58,871 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:40:58" (1/1) ... [2021-01-06 16:40:58,877 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:40:58" (1/1) ... [2021-01-06 16:40:58,888 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:40:58" (1/1) ... [2021-01-06 16:40:58,891 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:40:58" (1/1) ... [2021-01-06 16:40:58,893 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-06 16:40:58,894 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-06 16:40:58,895 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-06 16:40:58,895 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-06 16:40:58,902 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:40:58" (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 16:40:59,040 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-06 16:40:59,041 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-06 16:40:59,041 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-06 16:40:59,042 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-06 16:40:59,475 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-06 16:40:59,478 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-01-06 16:40:59,480 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 04:40:59 BoogieIcfgContainer [2021-01-06 16:40:59,481 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-06 16:40:59,483 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-06 16:40:59,483 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-06 16:40:59,495 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-06 16:40:59,495 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.01 04:40:58" (1/3) ... [2021-01-06 16:40:59,496 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bd756d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 04:40:59, skipping insertion in model container [2021-01-06 16:40:59,496 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:40:58" (2/3) ... [2021-01-06 16:40:59,497 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bd756d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 04:40:59, skipping insertion in model container [2021-01-06 16:40:59,497 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 04:40:59" (3/3) ... [2021-01-06 16:40:59,501 INFO L111 eAbstractionObserver]: Analyzing ICFG trex03-1.c [2021-01-06 16:40:59,516 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-06 16:40:59,528 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-01-06 16:40:59,552 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-01-06 16:40:59,599 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-06 16:40:59,599 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-06 16:40:59,600 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-06 16:40:59,600 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-06 16:40:59,600 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-06 16:40:59,600 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-06 16:40:59,600 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-06 16:40:59,600 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-06 16:40:59,618 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2021-01-06 16:40:59,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-01-06 16:40:59,625 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:40:59,626 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-01-06 16:40:59,627 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:40:59,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:40:59,638 INFO L82 PathProgramCache]: Analyzing trace with hash 890122407, now seen corresponding path program 1 times [2021-01-06 16:40:59,649 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:40:59,650 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004257936] [2021-01-06 16:40:59,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:40:59,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:40:59,857 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 16:40:59,858 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004257936] [2021-01-06 16:40:59,860 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 16:40:59,860 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-06 16:40:59,861 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745761954] [2021-01-06 16:40:59,867 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-01-06 16:40:59,867 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:40:59,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-01-06 16:40:59,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-01-06 16:40:59,891 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 2 states. [2021-01-06 16:40:59,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:40:59,910 INFO L93 Difference]: Finished difference Result 22 states and 26 transitions. [2021-01-06 16:40:59,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-01-06 16:40:59,912 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2021-01-06 16:40:59,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:40:59,933 INFO L225 Difference]: With dead ends: 22 [2021-01-06 16:40:59,934 INFO L226 Difference]: Without dead ends: 10 [2021-01-06 16:40:59,941 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 16:40:59,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2021-01-06 16:40:59,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2021-01-06 16:40:59,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-01-06 16:40:59,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 12 transitions. [2021-01-06 16:40:59,980 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 12 transitions. Word has length 6 [2021-01-06 16:40:59,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:40:59,981 INFO L481 AbstractCegarLoop]: Abstraction has 10 states and 12 transitions. [2021-01-06 16:40:59,981 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-01-06 16:40:59,981 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 12 transitions. [2021-01-06 16:40:59,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-01-06 16:40:59,982 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:40:59,982 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-01-06 16:40:59,982 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-06 16:40:59,983 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:40:59,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:40:59,984 INFO L82 PathProgramCache]: Analyzing trace with hash 889645751, now seen corresponding path program 1 times [2021-01-06 16:40:59,984 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:40:59,984 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352647139] [2021-01-06 16:40:59,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:41:00,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-01-06 16:41:00,023 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-01-06 16:41:00,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-01-06 16:41:00,050 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-01-06 16:41:00,075 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-01-06 16:41:00,075 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-01-06 16:41:00,076 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-01-06 16:41:00,101 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.01 04:41:00 BoogieIcfgContainer [2021-01-06 16:41:00,102 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-01-06 16:41:00,102 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-01-06 16:41:00,102 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-01-06 16:41:00,103 INFO L275 PluginConnector]: Witness Printer initialized [2021-01-06 16:41:00,103 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 04:40:59" (3/4) ... [2021-01-06 16:41:00,106 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-01-06 16:41:00,148 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/loops/trex03-1.c-witness.graphml [2021-01-06 16:41:00,148 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-01-06 16:41:00,151 INFO L168 Benchmark]: Toolchain (without parser) took 1665.63 ms. Allocated memory is still 151.0 MB. Free memory was 133.0 MB in the beginning and 99.1 MB in the end (delta: 33.8 MB). Peak memory consumption was 32.2 MB. Max. memory is 8.0 GB. [2021-01-06 16:41:00,152 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 151.0 MB. Free memory is still 123.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-01-06 16:41:00,153 INFO L168 Benchmark]: CACSL2BoogieTranslator took 288.01 ms. Allocated memory is still 151.0 MB. Free memory was 132.7 MB in the beginning and 123.2 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-01-06 16:41:00,153 INFO L168 Benchmark]: Boogie Procedure Inliner took 53.40 ms. Allocated memory is still 151.0 MB. Free memory was 123.2 MB in the beginning and 121.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-01-06 16:41:00,154 INFO L168 Benchmark]: Boogie Preprocessor took 60.62 ms. Allocated memory is still 151.0 MB. Free memory was 121.7 MB in the beginning and 134.7 MB in the end (delta: -13.0 MB). Peak memory consumption was 5.0 MB. Max. memory is 8.0 GB. [2021-01-06 16:41:00,155 INFO L168 Benchmark]: RCFGBuilder took 586.28 ms. Allocated memory is still 151.0 MB. Free memory was 134.7 MB in the beginning and 121.6 MB in the end (delta: 13.1 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2021-01-06 16:41:00,156 INFO L168 Benchmark]: TraceAbstraction took 619.17 ms. Allocated memory is still 151.0 MB. Free memory was 121.2 MB in the beginning and 101.0 MB in the end (delta: 20.1 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. [2021-01-06 16:41:00,156 INFO L168 Benchmark]: Witness Printer took 46.26 ms. Allocated memory is still 151.0 MB. Free memory was 101.0 MB in the beginning and 99.1 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-01-06 16:41:00,161 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 151.0 MB. Free memory is still 123.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 288.01 ms. Allocated memory is still 151.0 MB. Free memory was 132.7 MB in the beginning and 123.2 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 53.40 ms. Allocated memory is still 151.0 MB. Free memory was 123.2 MB in the beginning and 121.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 60.62 ms. Allocated memory is still 151.0 MB. Free memory was 121.7 MB in the beginning and 134.7 MB in the end (delta: -13.0 MB). Peak memory consumption was 5.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 586.28 ms. Allocated memory is still 151.0 MB. Free memory was 134.7 MB in the beginning and 121.6 MB in the end (delta: 13.1 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 619.17 ms. Allocated memory is still 151.0 MB. Free memory was 121.2 MB in the beginning and 101.0 MB in the end (delta: 20.1 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. * Witness Printer took 46.26 ms. Allocated memory is still 151.0 MB. Free memory was 101.0 MB in the beginning and 99.1 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 7]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L17] unsigned int x1=__VERIFIER_nondet_uint(), x2=__VERIFIER_nondet_uint(), x3=__VERIFIER_nondet_uint(); [L17] unsigned int x1=__VERIFIER_nondet_uint(), x2=__VERIFIER_nondet_uint(), x3=__VERIFIER_nondet_uint(); [L17] unsigned int x1=__VERIFIER_nondet_uint(), x2=__VERIFIER_nondet_uint(), x3=__VERIFIER_nondet_uint(); [L18] unsigned int d1=1, d2=1, d3=1; [L19] _Bool c1=__VERIFIER_nondet_bool(), c2=__VERIFIER_nondet_bool(); [L19] _Bool c1=__VERIFIER_nondet_bool(), c2=__VERIFIER_nondet_bool(); [L21] COND FALSE !(x1>0 && x2>0 && x3>0) [L6] COND TRUE !(cond) [L7] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 16 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=14occurred 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 proved your program to be incorrect! Received shutdown request...