/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/verifythis/elimination_max.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-06 17:11:00,293 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-06 17:11:00,297 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-06 17:11:00,355 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-06 17:11:00,356 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-06 17:11:00,360 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-06 17:11:00,364 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-06 17:11:00,370 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-06 17:11:00,374 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-06 17:11:00,380 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-06 17:11:00,384 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-06 17:11:00,385 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-06 17:11:00,386 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-06 17:11:00,389 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-06 17:11:00,391 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-06 17:11:00,406 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-06 17:11:00,407 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-06 17:11:00,412 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-06 17:11:00,420 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-06 17:11:00,427 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-06 17:11:00,429 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-06 17:11:00,431 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-06 17:11:00,433 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-06 17:11:00,436 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-06 17:11:00,446 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-01-06 17:11:00,446 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-01-06 17:11:00,447 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-01-06 17:11:00,449 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-01-06 17:11:00,449 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-01-06 17:11:00,452 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-01-06 17:11:00,452 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-06 17:11:00,453 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-06 17:11:00,455 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-06 17:11:00,456 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-06 17:11:00,457 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-06 17:11:00,457 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-06 17:11:00,458 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-06 17:11:00,465 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-06 17:11:00,465 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-06 17:11:00,466 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-06 17:11:00,467 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-06 17:11:00,468 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 17:11:00,518 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-06 17:11:00,518 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-06 17:11:00,523 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-06 17:11:00,523 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-06 17:11:00,523 INFO L138 SettingsManager]: * Use SBE=true [2021-01-06 17:11:00,523 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-06 17:11:00,524 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-06 17:11:00,524 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-06 17:11:00,524 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-06 17:11:00,524 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-06 17:11:00,525 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-06 17:11:00,526 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-06 17:11:00,526 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-06 17:11:00,526 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-06 17:11:00,527 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-06 17:11:00,527 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-06 17:11:00,527 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-06 17:11:00,527 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 17:11:00,527 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-06 17:11:00,528 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-06 17:11:00,528 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-06 17:11:00,528 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-06 17:11:00,528 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-06 17:11:00,528 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-06 17:11:00,528 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-06 17:11:00,529 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-06 17:11:00,917 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-06 17:11:00,955 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-06 17:11:00,959 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-06 17:11:00,960 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-06 17:11:00,961 INFO L275 PluginConnector]: CDTParser initialized [2021-01-06 17:11:00,961 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/verifythis/elimination_max.c [2021-01-06 17:11:01,042 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/32329e897/bf60166bda9443e3b978a17d169b98a4/FLAGcee40dd3c [2021-01-06 17:11:01,695 INFO L306 CDTParser]: Found 1 translation units. [2021-01-06 17:11:01,696 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/verifythis/elimination_max.c [2021-01-06 17:11:01,703 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/32329e897/bf60166bda9443e3b978a17d169b98a4/FLAGcee40dd3c [2021-01-06 17:11:02,040 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/32329e897/bf60166bda9443e3b978a17d169b98a4 [2021-01-06 17:11:02,044 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-06 17:11:02,047 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-06 17:11:02,052 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-06 17:11:02,052 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-06 17:11:02,056 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-06 17:11:02,058 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 05:11:02" (1/1) ... [2021-01-06 17:11:02,060 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61e2503e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:11:02, skipping insertion in model container [2021-01-06 17:11:02,061 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 05:11:02" (1/1) ... [2021-01-06 17:11:02,070 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-06 17:11:02,092 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-01-06 17:11:02,254 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/verifythis/elimination_max.c[485,498] left hand side expression in assignment: lhs: VariableLHS[~i~0,] left hand side expression in assignment: lhs: VariableLHS[~i~0,] [2021-01-06 17:11:02,276 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 17:11:02,294 INFO L203 MainTranslator]: Completed pre-run [2021-01-06 17:11:02,314 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/verifythis/elimination_max.c[485,498] left hand side expression in assignment: lhs: VariableLHS[~i~0,] left hand side expression in assignment: lhs: VariableLHS[~i~0,] [2021-01-06 17:11:02,337 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 17:11:02,363 INFO L208 MainTranslator]: Completed translation [2021-01-06 17:11:02,364 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:11:02 WrapperNode [2021-01-06 17:11:02,364 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-06 17:11:02,367 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-06 17:11:02,367 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-06 17:11:02,367 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-06 17:11:02,378 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:11:02" (1/1) ... [2021-01-06 17:11:02,402 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:11:02" (1/1) ... [2021-01-06 17:11:02,442 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-06 17:11:02,445 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-06 17:11:02,446 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-06 17:11:02,446 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-06 17:11:02,457 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:11:02" (1/1) ... [2021-01-06 17:11:02,457 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:11:02" (1/1) ... [2021-01-06 17:11:02,462 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:11:02" (1/1) ... [2021-01-06 17:11:02,463 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:11:02" (1/1) ... [2021-01-06 17:11:02,483 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:11:02" (1/1) ... [2021-01-06 17:11:02,490 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:11:02" (1/1) ... [2021-01-06 17:11:02,498 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:11:02" (1/1) ... [2021-01-06 17:11:02,506 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-06 17:11:02,507 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-06 17:11:02,508 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-06 17:11:02,508 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-06 17:11:02,511 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:11:02" (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 17:11:02,630 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-06 17:11:02,631 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-06 17:11:02,631 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-01-06 17:11:02,631 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-06 17:11:02,632 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-06 17:11:02,632 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-01-06 17:11:02,633 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-01-06 17:11:02,964 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-06 17:11:02,965 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2021-01-06 17:11:02,967 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:11:02 BoogieIcfgContainer [2021-01-06 17:11:02,967 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-06 17:11:02,969 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-06 17:11:02,969 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-06 17:11:03,005 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-06 17:11:03,005 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.01 05:11:02" (1/3) ... [2021-01-06 17:11:03,006 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5da17bbb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 05:11:03, skipping insertion in model container [2021-01-06 17:11:03,007 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:11:02" (2/3) ... [2021-01-06 17:11:03,007 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5da17bbb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 05:11:03, skipping insertion in model container [2021-01-06 17:11:03,007 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:11:02" (3/3) ... [2021-01-06 17:11:03,009 INFO L111 eAbstractionObserver]: Analyzing ICFG elimination_max.c [2021-01-06 17:11:03,017 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-06 17:11:03,022 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2021-01-06 17:11:03,044 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-01-06 17:11:03,102 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-06 17:11:03,102 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-06 17:11:03,102 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-06 17:11:03,102 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-06 17:11:03,103 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-06 17:11:03,103 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-06 17:11:03,103 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-06 17:11:03,103 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-06 17:11:03,125 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2021-01-06 17:11:03,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-01-06 17:11:03,133 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:11:03,134 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:11:03,134 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:11:03,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:11:03,149 INFO L82 PathProgramCache]: Analyzing trace with hash -489201995, now seen corresponding path program 1 times [2021-01-06 17:11:03,161 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:11:03,161 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013209225] [2021-01-06 17:11:03,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:11:03,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:11:03,344 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 17:11:03,345 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013209225] [2021-01-06 17:11:03,346 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:11:03,346 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-06 17:11:03,347 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151931338] [2021-01-06 17:11:03,352 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-01-06 17:11:03,353 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:11:03,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-01-06 17:11:03,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-01-06 17:11:03,372 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 2 states. [2021-01-06 17:11:03,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:11:03,393 INFO L93 Difference]: Finished difference Result 45 states and 60 transitions. [2021-01-06 17:11:03,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-01-06 17:11:03,395 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2021-01-06 17:11:03,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:11:03,405 INFO L225 Difference]: With dead ends: 45 [2021-01-06 17:11:03,405 INFO L226 Difference]: Without dead ends: 20 [2021-01-06 17:11:03,408 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 17:11:03,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-01-06 17:11:03,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2021-01-06 17:11:03,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-01-06 17:11:03,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2021-01-06 17:11:03,447 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 11 [2021-01-06 17:11:03,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:11:03,448 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2021-01-06 17:11:03,448 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-01-06 17:11:03,448 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2021-01-06 17:11:03,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-01-06 17:11:03,449 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:11:03,449 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:11:03,450 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-06 17:11:03,450 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:11:03,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:11:03,451 INFO L82 PathProgramCache]: Analyzing trace with hash 190915957, now seen corresponding path program 1 times [2021-01-06 17:11:03,451 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:11:03,451 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024509644] [2021-01-06 17:11:03,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:11:03,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:11:03,621 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 17:11:03,622 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024509644] [2021-01-06 17:11:03,622 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:11:03,622 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-06 17:11:03,623 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684403764] [2021-01-06 17:11:03,624 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 17:11:03,625 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:11:03,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 17:11:03,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-01-06 17:11:03,626 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand 6 states. [2021-01-06 17:11:03,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:11:03,710 INFO L93 Difference]: Finished difference Result 20 states and 22 transitions. [2021-01-06 17:11:03,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 17:11:03,714 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2021-01-06 17:11:03,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:11:03,714 INFO L225 Difference]: With dead ends: 20 [2021-01-06 17:11:03,714 INFO L226 Difference]: Without dead ends: 0 [2021-01-06 17:11:03,716 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-01-06 17:11:03,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-01-06 17:11:03,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-01-06 17:11:03,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-01-06 17:11:03,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-01-06 17:11:03,717 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2021-01-06 17:11:03,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:11:03,717 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-01-06 17:11:03,717 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 17:11:03,718 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-01-06 17:11:03,718 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-01-06 17:11:03,719 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-01-06 17:11:03,722 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-01-06 17:11:03,771 INFO L185 CegarLoopUtils]: At program point L35-2(lines 25 37) the Hoare annotation is: (let ((.cse0 ((as const (Array Int Int)) 0))) (and (= .cse0 (select |#memory_int| |ULTIMATE.start_main_#t~malloc9.base|)) (= (select |#memory_int| ULTIMATE.start_main_~a~0.base) .cse0))) [2021-01-06 17:11:03,772 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 11) no Hoare annotation was computed. [2021-01-06 17:11:03,772 INFO L189 CegarLoopUtils]: For program point L11(line 11) no Hoare annotation was computed. [2021-01-06 17:11:03,772 INFO L189 CegarLoopUtils]: For program point L11-1(line 11) no Hoare annotation was computed. [2021-01-06 17:11:03,772 INFO L189 CegarLoopUtils]: For program point L11-3(line 11) no Hoare annotation was computed. [2021-01-06 17:11:03,772 INFO L189 CegarLoopUtils]: For program point L7(lines 7 9) no Hoare annotation was computed. [2021-01-06 17:11:03,773 INFO L189 CegarLoopUtils]: For program point L11-4(line 11) no Hoare annotation was computed. [2021-01-06 17:11:03,773 INFO L189 CegarLoopUtils]: For program point L7-1(lines 7 9) no Hoare annotation was computed. [2021-01-06 17:11:03,773 INFO L189 CegarLoopUtils]: For program point L-1(line -1) no Hoare annotation was computed. [2021-01-06 17:11:03,776 INFO L189 CegarLoopUtils]: For program point L-1-1(line -1) no Hoare annotation was computed. [2021-01-06 17:11:03,776 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-01-06 17:11:03,776 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-01-06 17:11:03,777 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 11) no Hoare annotation was computed. [2021-01-06 17:11:03,777 INFO L189 CegarLoopUtils]: For program point L45-2(lines 45 47) no Hoare annotation was computed. [2021-01-06 17:11:03,777 INFO L185 CegarLoopUtils]: At program point L45-3(lines 45 47) the Hoare annotation is: (let ((.cse0 ((as const (Array Int Int)) 0))) (and (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (= .cse0 (select |#memory_int| |ULTIMATE.start_main_#t~malloc9.base|)) (= (select |#memory_int| ULTIMATE.start_main_~a~0.base) .cse0))) [2021-01-06 17:11:03,777 INFO L189 CegarLoopUtils]: For program point L45-4(lines 45 47) no Hoare annotation was computed. [2021-01-06 17:11:03,778 INFO L189 CegarLoopUtils]: For program point L8(line 8) no Hoare annotation was computed. [2021-01-06 17:11:03,778 INFO L189 CegarLoopUtils]: For program point L8-2(line 8) no Hoare annotation was computed. [2021-01-06 17:11:03,778 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-01-06 17:11:03,778 INFO L189 CegarLoopUtils]: For program point L25-2(lines 25 37) no Hoare annotation was computed. [2021-01-06 17:11:03,778 INFO L192 CegarLoopUtils]: At program point L50(lines 16 51) the Hoare annotation is: true [2021-01-06 17:11:03,778 INFO L189 CegarLoopUtils]: For program point L10(lines 10 12) no Hoare annotation was computed. [2021-01-06 17:11:03,779 INFO L189 CegarLoopUtils]: For program point L10-1(lines 10 12) no Hoare annotation was computed. [2021-01-06 17:11:03,779 INFO L189 CegarLoopUtils]: For program point L35(lines 35 36) no Hoare annotation was computed. [2021-01-06 17:11:03,794 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.IllegalArgumentException: unknown symbol (const Int (Array Int Int)) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:240) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBacktranslator.translateExpression(RCFGBacktranslator.java:394) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBacktranslator.translateExpression(RCFGBacktranslator.java:1) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateExpression(ModelTranslationContainer.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateExpressionToString(ModelTranslationContainer.java:89) at de.uni_freiburg.informatik.ultimate.core.lib.results.InvariantResult.getLongDescription(InvariantResult.java:65) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ResultService.reportResult(ResultService.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.reportResult(TraceAbstractionStarter.java:558) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.createInvariantResults(TraceAbstractionStarter.java:256) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:213) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:131) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-01-06 17:11:03,803 INFO L168 Benchmark]: Toolchain (without parser) took 1751.48 ms. Allocated memory is still 159.4 MB. Free memory was 134.1 MB in the beginning and 105.4 MB in the end (delta: 28.7 MB). Peak memory consumption was 28.9 MB. Max. memory is 8.0 GB. [2021-01-06 17:11:03,804 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 159.4 MB. Free memory is still 132.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-01-06 17:11:03,806 INFO L168 Benchmark]: CACSL2BoogieTranslator took 313.61 ms. Allocated memory is still 159.4 MB. Free memory was 133.9 MB in the beginning and 123.8 MB in the end (delta: 10.1 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-01-06 17:11:03,809 INFO L168 Benchmark]: Boogie Procedure Inliner took 77.42 ms. Allocated memory is still 159.4 MB. Free memory was 123.7 MB in the beginning and 122.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-01-06 17:11:03,810 INFO L168 Benchmark]: Boogie Preprocessor took 61.04 ms. Allocated memory is still 159.4 MB. Free memory was 122.2 MB in the beginning and 120.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-01-06 17:11:03,811 INFO L168 Benchmark]: RCFGBuilder took 459.75 ms. Allocated memory is still 159.4 MB. Free memory was 120.8 MB in the beginning and 105.3 MB in the end (delta: 15.5 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. [2021-01-06 17:11:03,813 INFO L168 Benchmark]: TraceAbstraction took 827.90 ms. Allocated memory is still 159.4 MB. Free memory was 104.9 MB in the beginning and 105.4 MB in the end (delta: -507.5 kB). Peak memory consumption was 541.1 kB. Max. memory is 8.0 GB. [2021-01-06 17:11:03,821 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 159.4 MB. Free memory is still 132.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 313.61 ms. Allocated memory is still 159.4 MB. Free memory was 133.9 MB in the beginning and 123.8 MB in the end (delta: 10.1 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 77.42 ms. Allocated memory is still 159.4 MB. Free memory was 123.7 MB in the beginning and 122.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 61.04 ms. Allocated memory is still 159.4 MB. Free memory was 122.2 MB in the beginning and 120.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 459.75 ms. Allocated memory is still 159.4 MB. Free memory was 120.8 MB in the beginning and 105.3 MB in the end (delta: 15.5 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 827.90 ms. Allocated memory is still 159.4 MB. Free memory was 104.9 MB in the beginning and 105.4 MB in the end (delta: -507.5 kB). Peak memory consumption was 541.1 kB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 11]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 11]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - ExceptionOrErrorResult: IllegalArgumentException: unknown symbol (const Int (Array Int Int)) de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: IllegalArgumentException: unknown symbol (const Int (Array Int Int)): de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:240) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...