/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/lcp.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-06 17:11:02,867 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-06 17:11:02,871 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-06 17:11:02,912 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-06 17:11:02,913 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-06 17:11:02,914 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-06 17:11:02,917 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-06 17:11:02,919 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-06 17:11:02,922 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-06 17:11:02,923 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-06 17:11:02,925 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-06 17:11:02,926 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-06 17:11:02,927 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-06 17:11:02,928 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-06 17:11:02,930 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-06 17:11:02,932 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-06 17:11:02,933 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-06 17:11:02,934 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-06 17:11:02,947 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-06 17:11:02,950 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-06 17:11:02,952 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-06 17:11:02,958 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-06 17:11:02,960 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-06 17:11:02,963 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-06 17:11:02,973 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-06 17:11:02,985 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-06 17:11:02,986 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-06 17:11:02,988 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-06 17:11:02,991 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-06 17:11:02,993 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-06 17:11:02,993 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-06 17:11:02,994 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-06 17:11:02,995 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-06 17:11:02,995 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-06 17:11:02,996 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-06 17:11:03,002 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-06 17:11:03,008 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 17:11:03,064 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-06 17:11:03,065 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-06 17:11:03,067 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-06 17:11:03,067 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-06 17:11:03,067 INFO L138 SettingsManager]: * Use SBE=true [2021-01-06 17:11:03,068 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-06 17:11:03,068 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-06 17:11:03,068 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-06 17:11:03,068 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-06 17:11:03,069 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-06 17:11:03,069 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-06 17:11:03,069 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-06 17:11:03,069 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-06 17:11:03,070 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-06 17:11:03,070 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-06 17:11:03,070 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-06 17:11:03,071 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-06 17:11:03,071 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 17:11:03,071 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-06 17:11:03,071 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-06 17:11:03,072 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-06 17:11:03,072 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-06 17:11:03,072 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-06 17:11:03,072 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-06 17:11:03,073 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-06 17:11:03,073 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-06 17:11:03,462 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-06 17:11:03,493 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-06 17:11:03,496 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-06 17:11:03,498 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-06 17:11:03,499 INFO L275 PluginConnector]: CDTParser initialized [2021-01-06 17:11:03,500 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/verifythis/lcp.c [2021-01-06 17:11:03,584 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/1aadb9689/69e4544c510f4853919796215c5ace3f/FLAG9fe63c863 [2021-01-06 17:11:04,231 INFO L306 CDTParser]: Found 1 translation units. [2021-01-06 17:11:04,232 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/verifythis/lcp.c [2021-01-06 17:11:04,240 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/1aadb9689/69e4544c510f4853919796215c5ace3f/FLAG9fe63c863 [2021-01-06 17:11:04,605 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/1aadb9689/69e4544c510f4853919796215c5ace3f [2021-01-06 17:11:04,610 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-06 17:11:04,614 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-06 17:11:04,619 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-06 17:11:04,619 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-06 17:11:04,624 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-06 17:11:04,626 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 05:11:04" (1/1) ... [2021-01-06 17:11:04,628 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b87c8fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:11:04, skipping insertion in model container [2021-01-06 17:11:04,629 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 05:11:04" (1/1) ... [2021-01-06 17:11:04,645 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-06 17:11:04,672 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-01-06 17:11:04,929 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/lcp.c[515,528] [2021-01-06 17:11:04,983 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 17:11:05,002 INFO L203 MainTranslator]: Completed pre-run [2021-01-06 17:11:05,021 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/lcp.c[515,528] [2021-01-06 17:11:05,055 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 17:11:05,082 INFO L208 MainTranslator]: Completed translation [2021-01-06 17:11:05,083 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:11:05 WrapperNode [2021-01-06 17:11:05,083 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-06 17:11:05,085 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-06 17:11:05,085 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-06 17:11:05,085 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-06 17:11:05,097 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:11:05" (1/1) ... [2021-01-06 17:11:05,122 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:11:05" (1/1) ... [2021-01-06 17:11:05,174 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-06 17:11:05,178 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-06 17:11:05,178 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-06 17:11:05,178 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-06 17:11:05,191 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:11:05" (1/1) ... [2021-01-06 17:11:05,191 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:11:05" (1/1) ... [2021-01-06 17:11:05,200 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:11:05" (1/1) ... [2021-01-06 17:11:05,200 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:11:05" (1/1) ... [2021-01-06 17:11:05,226 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:11:05" (1/1) ... [2021-01-06 17:11:05,236 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:11:05" (1/1) ... [2021-01-06 17:11:05,241 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:11:05" (1/1) ... [2021-01-06 17:11:05,250 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-06 17:11:05,254 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-06 17:11:05,254 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-06 17:11:05,255 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-06 17:11:05,256 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:11:05" (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 17:11:05,394 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-06 17:11:05,395 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-06 17:11:05,395 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-01-06 17:11:05,396 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-06 17:11:05,396 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-06 17:11:05,396 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-01-06 17:11:05,397 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-01-06 17:11:05,977 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-06 17:11:05,977 INFO L299 CfgBuilder]: Removed 21 assume(true) statements. [2021-01-06 17:11:05,979 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:11:05 BoogieIcfgContainer [2021-01-06 17:11:05,979 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-06 17:11:05,981 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-06 17:11:05,981 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-06 17:11:05,985 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-06 17:11:05,986 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.01 05:11:04" (1/3) ... [2021-01-06 17:11:05,987 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62043dd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 05:11:05, skipping insertion in model container [2021-01-06 17:11:05,987 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:11:05" (2/3) ... [2021-01-06 17:11:05,987 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62043dd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 05:11:05, skipping insertion in model container [2021-01-06 17:11:05,988 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:11:05" (3/3) ... [2021-01-06 17:11:05,989 INFO L111 eAbstractionObserver]: Analyzing ICFG lcp.c [2021-01-06 17:11:05,997 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-06 17:11:06,002 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2021-01-06 17:11:06,023 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-01-06 17:11:06,053 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-06 17:11:06,053 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-06 17:11:06,053 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-06 17:11:06,054 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-06 17:11:06,054 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-06 17:11:06,054 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-06 17:11:06,054 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-06 17:11:06,054 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-06 17:11:06,071 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2021-01-06 17:11:06,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-01-06 17:11:06,077 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:11:06,078 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:11:06,079 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:11:06,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:11:06,086 INFO L82 PathProgramCache]: Analyzing trace with hash 1579702917, now seen corresponding path program 1 times [2021-01-06 17:11:06,097 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:11:06,097 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224649115] [2021-01-06 17:11:06,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:11:06,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:11:06,273 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 17:11:06,274 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224649115] [2021-01-06 17:11:06,275 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:11:06,275 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-06 17:11:06,277 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448660265] [2021-01-06 17:11:06,283 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-01-06 17:11:06,283 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:11:06,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-01-06 17:11:06,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-01-06 17:11:06,306 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 2 states. [2021-01-06 17:11:06,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:11:06,327 INFO L93 Difference]: Finished difference Result 51 states and 66 transitions. [2021-01-06 17:11:06,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-01-06 17:11:06,329 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 14 [2021-01-06 17:11:06,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:11:06,339 INFO L225 Difference]: With dead ends: 51 [2021-01-06 17:11:06,340 INFO L226 Difference]: Without dead ends: 22 [2021-01-06 17:11:06,344 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 17:11:06,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-01-06 17:11:06,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2021-01-06 17:11:06,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2021-01-06 17:11:06,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2021-01-06 17:11:06,383 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 14 [2021-01-06 17:11:06,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:11:06,383 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2021-01-06 17:11:06,383 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-01-06 17:11:06,384 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2021-01-06 17:11:06,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-01-06 17:11:06,384 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:11:06,385 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:11:06,385 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-06 17:11:06,385 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:11:06,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:11:06,386 INFO L82 PathProgramCache]: Analyzing trace with hash 588290746, now seen corresponding path program 1 times [2021-01-06 17:11:06,387 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:11:06,387 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456850058] [2021-01-06 17:11:06,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:11:06,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:11:06,675 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 17:11:06,675 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456850058] [2021-01-06 17:11:06,676 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:11:06,676 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-06 17:11:06,676 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865475554] [2021-01-06 17:11:06,678 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 17:11:06,678 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:11:06,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 17:11:06,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-06 17:11:06,680 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand 6 states. [2021-01-06 17:11:06,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:11:06,906 INFO L93 Difference]: Finished difference Result 50 states and 52 transitions. [2021-01-06 17:11:06,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 17:11:06,907 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2021-01-06 17:11:06,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:11:06,908 INFO L225 Difference]: With dead ends: 50 [2021-01-06 17:11:06,908 INFO L226 Difference]: Without dead ends: 38 [2021-01-06 17:11:06,910 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-01-06 17:11:06,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-01-06 17:11:06,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 25. [2021-01-06 17:11:06,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2021-01-06 17:11:06,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2021-01-06 17:11:06,918 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 16 [2021-01-06 17:11:06,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:11:06,919 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2021-01-06 17:11:06,919 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 17:11:06,919 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2021-01-06 17:11:06,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-01-06 17:11:06,920 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:11:06,920 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:11:06,920 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-01-06 17:11:06,920 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:11:06,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:11:06,921 INFO L82 PathProgramCache]: Analyzing trace with hash -221055880, now seen corresponding path program 1 times [2021-01-06 17:11:06,922 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:11:06,922 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587648314] [2021-01-06 17:11:06,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:11:06,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:11:07,146 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 17:11:07,147 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587648314] [2021-01-06 17:11:07,147 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:11:07,148 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-06 17:11:07,149 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33870039] [2021-01-06 17:11:07,150 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 17:11:07,150 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:11:07,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 17:11:07,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-06 17:11:07,156 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand 6 states. [2021-01-06 17:11:07,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:11:07,256 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2021-01-06 17:11:07,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 17:11:07,257 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2021-01-06 17:11:07,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:11:07,258 INFO L225 Difference]: With dead ends: 25 [2021-01-06 17:11:07,258 INFO L226 Difference]: Without dead ends: 23 [2021-01-06 17:11:07,259 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-01-06 17:11:07,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-01-06 17:11:07,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2021-01-06 17:11:07,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2021-01-06 17:11:07,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2021-01-06 17:11:07,265 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 16 [2021-01-06 17:11:07,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:11:07,265 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2021-01-06 17:11:07,265 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 17:11:07,266 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2021-01-06 17:11:07,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-01-06 17:11:07,266 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:11:07,267 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:11:07,267 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-01-06 17:11:07,267 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:11:07,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:11:07,268 INFO L82 PathProgramCache]: Analyzing trace with hash -1286954589, now seen corresponding path program 1 times [2021-01-06 17:11:07,268 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:11:07,269 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107488235] [2021-01-06 17:11:07,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:11:07,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:11:07,499 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 17:11:07,499 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107488235] [2021-01-06 17:11:07,500 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:11:07,500 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-01-06 17:11:07,500 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404565459] [2021-01-06 17:11:07,501 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-06 17:11:07,501 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:11:07,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-06 17:11:07,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-01-06 17:11:07,503 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand 7 states. [2021-01-06 17:11:07,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:11:07,757 INFO L93 Difference]: Finished difference Result 34 states and 36 transitions. [2021-01-06 17:11:07,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-06 17:11:07,758 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2021-01-06 17:11:07,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:11:07,759 INFO L225 Difference]: With dead ends: 34 [2021-01-06 17:11:07,759 INFO L226 Difference]: Without dead ends: 24 [2021-01-06 17:11:07,760 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-01-06 17:11:07,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-01-06 17:11:07,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 23. [2021-01-06 17:11:07,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2021-01-06 17:11:07,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2021-01-06 17:11:07,766 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 19 [2021-01-06 17:11:07,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:11:07,766 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2021-01-06 17:11:07,766 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-06 17:11:07,766 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2021-01-06 17:11:07,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-01-06 17:11:07,767 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:11:07,767 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:11:07,768 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-01-06 17:11:07,768 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:11:07,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:11:07,769 INFO L82 PathProgramCache]: Analyzing trace with hash 873138096, now seen corresponding path program 1 times [2021-01-06 17:11:07,769 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:11:07,770 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150008963] [2021-01-06 17:11:07,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:11:07,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:11:07,877 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:11:07,877 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150008963] [2021-01-06 17:11:07,878 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1429458284] [2021-01-06 17:11:07,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:11:08,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:11:08,013 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 15 conjunts are in the unsatisfiable core [2021-01-06 17:11:08,022 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:11:08,096 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2021-01-06 17:11:08,097 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 17:11:08,101 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 17:11:08,102 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 17:11:08,103 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:7, output treesize:6 [2021-01-06 17:11:08,138 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 17:11:08,159 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-01-06 17:11:08,160 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 17:11:08,160 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 7 [2021-01-06 17:11:08,160 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522608848] [2021-01-06 17:11:08,161 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-06 17:11:08,161 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:11:08,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-06 17:11:08,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-01-06 17:11:08,163 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand 7 states. [2021-01-06 17:11:08,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:11:08,240 INFO L93 Difference]: Finished difference Result 35 states and 37 transitions. [2021-01-06 17:11:08,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 17:11:08,240 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 22 [2021-01-06 17:11:08,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:11:08,243 INFO L225 Difference]: With dead ends: 35 [2021-01-06 17:11:08,243 INFO L226 Difference]: Without dead ends: 25 [2021-01-06 17:11:08,244 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-01-06 17:11:08,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-01-06 17:11:08,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 23. [2021-01-06 17:11:08,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2021-01-06 17:11:08,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2021-01-06 17:11:08,249 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 22 [2021-01-06 17:11:08,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:11:08,249 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2021-01-06 17:11:08,250 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-06 17:11:08,250 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2021-01-06 17:11:08,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-01-06 17:11:08,251 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:11:08,251 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:11:08,465 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:11:08,466 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:11:08,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:11:08,467 INFO L82 PathProgramCache]: Analyzing trace with hash 1574202674, now seen corresponding path program 1 times [2021-01-06 17:11:08,468 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:11:08,469 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49698545] [2021-01-06 17:11:08,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:11:08,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:11:08,666 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-06 17:11:08,667 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49698545] [2021-01-06 17:11:08,668 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [56623487] [2021-01-06 17:11:08,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:11:08,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:11:08,748 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 20 conjunts are in the unsatisfiable core [2021-01-06 17:11:08,750 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:11:08,809 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 17:11:08,811 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 17:11:08,817 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 17:11:08,819 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 17:11:08,824 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 17:11:08,826 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 17:11:08,840 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 17:11:08,870 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 17:11:08,878 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 17:11:08,881 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 17:11:08,886 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 17:11:08,912 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-06 17:11:08,912 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 17:11:08,913 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2021-01-06 17:11:08,913 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420242938] [2021-01-06 17:11:08,913 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-06 17:11:08,914 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:11:08,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-06 17:11:08,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-01-06 17:11:08,916 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand 8 states. [2021-01-06 17:11:09,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:11:09,082 INFO L93 Difference]: Finished difference Result 26 states and 29 transitions. [2021-01-06 17:11:09,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-06 17:11:09,083 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 22 [2021-01-06 17:11:09,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:11:09,084 INFO L225 Difference]: With dead ends: 26 [2021-01-06 17:11:09,085 INFO L226 Difference]: Without dead ends: 0 [2021-01-06 17:11:09,086 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-01-06 17:11:09,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-01-06 17:11:09,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-01-06 17:11:09,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-01-06 17:11:09,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-01-06 17:11:09,087 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 22 [2021-01-06 17:11:09,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:11:09,087 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-01-06 17:11:09,087 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-01-06 17:11:09,087 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-01-06 17:11:09,087 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-01-06 17:11:09,302 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:11:09,306 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-01-06 17:11:09,403 INFO L189 CegarLoopUtils]: For program point L31(lines 31 32) no Hoare annotation was computed. [2021-01-06 17:11:09,403 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-01-06 17:11:09,403 INFO L192 CegarLoopUtils]: At program point L48(lines 35 49) the Hoare annotation is: true [2021-01-06 17:11:09,404 INFO L189 CegarLoopUtils]: For program point L-1(line -1) no Hoare annotation was computed. [2021-01-06 17:11:09,404 INFO L189 CegarLoopUtils]: For program point L-1-1(line -1) no Hoare annotation was computed. [2021-01-06 17:11:09,404 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-01-06 17:11:09,404 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-01-06 17:11:09,404 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-01-06 17:11:09,404 INFO L189 CegarLoopUtils]: For program point L24(lines 24 33) no Hoare annotation was computed. [2021-01-06 17:11:09,404 INFO L189 CegarLoopUtils]: For program point L12(lines 12 14) no Hoare annotation was computed. [2021-01-06 17:11:09,405 INFO L189 CegarLoopUtils]: For program point L12-1(lines 12 14) no Hoare annotation was computed. [2021-01-06 17:11:09,405 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-01-06 17:11:09,405 INFO L185 CegarLoopUtils]: At program point L21(lines 16 22) the Hoare annotation is: (let ((.cse1 ((as const (Array Int Int)) 0))) (let ((.cse0 (= ULTIMATE.start_main_~n~0 ULTIMATE.start_lcp_~n)) (.cse2 (<= ULTIMATE.start_lcp_~x ULTIMATE.start_main_~x~0)) (.cse3 (= (select |#memory_int| |ULTIMATE.start_main_#t~malloc18.base|) .cse1)) (.cse4 (= (select |#memory_int| ULTIMATE.start_main_~a~0.base) .cse1)) (.cse5 (= ULTIMATE.start_main_~y~0 ULTIMATE.start_lcp_~y))) (or (and .cse0 (or (<= ULTIMATE.start_main_~n~0 (+ ULTIMATE.start_main_~y~0 |ULTIMATE.start_lcp_#res|)) (<= ULTIMATE.start_main_~n~0 (+ ULTIMATE.start_main_~x~0 |ULTIMATE.start_lcp_#res|))) (= (select |#memory_int| ULTIMATE.start_lcp_~a.base) .cse1) (or (<= ULTIMATE.start_main_~n~0 (+ ULTIMATE.start_lcp_~l~0 ULTIMATE.start_main_~x~0)) (<= ULTIMATE.start_main_~n~0 (+ ULTIMATE.start_lcp_~l~0 ULTIMATE.start_main_~y~0))) .cse2 .cse3 .cse4 .cse5) (and .cse0 .cse2 (= 0 |ULTIMATE.start_lcp_#res|) .cse3 (or (<= ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~y~0)) .cse4 .cse5 (= 0 ULTIMATE.start_lcp_~l~0))))) [2021-01-06 17:11:09,405 INFO L189 CegarLoopUtils]: For program point L13(line 13) no Hoare annotation was computed. [2021-01-06 17:11:09,406 INFO L189 CegarLoopUtils]: For program point L13-1(line 13) no Hoare annotation was computed. [2021-01-06 17:11:09,406 INFO L189 CegarLoopUtils]: For program point L13-3(line 13) no Hoare annotation was computed. [2021-01-06 17:11:09,406 INFO L189 CegarLoopUtils]: For program point L13-4(line 13) no Hoare annotation was computed. [2021-01-06 17:11:09,406 INFO L189 CegarLoopUtils]: For program point L5(lines 5 7) no Hoare annotation was computed. [2021-01-06 17:11:09,406 INFO L189 CegarLoopUtils]: For program point L5-1(lines 5 7) no Hoare annotation was computed. [2021-01-06 17:11:09,406 INFO L189 CegarLoopUtils]: For program point L5-2(lines 5 7) no Hoare annotation was computed. [2021-01-06 17:11:09,406 INFO L189 CegarLoopUtils]: For program point L18-1(line 18) no Hoare annotation was computed. [2021-01-06 17:11:09,406 INFO L189 CegarLoopUtils]: For program point L18-3(lines 18 20) no Hoare annotation was computed. [2021-01-06 17:11:09,407 INFO L185 CegarLoopUtils]: At program point L18-5(lines 18 20) the Hoare annotation is: (let ((.cse0 ((as const (Array Int Int)) 0))) (and (= ULTIMATE.start_main_~n~0 ULTIMATE.start_lcp_~n) (= (select |#memory_int| ULTIMATE.start_lcp_~a.base) .cse0) (<= ULTIMATE.start_lcp_~x ULTIMATE.start_main_~x~0) (= (select |#memory_int| |ULTIMATE.start_main_#t~malloc18.base|) .cse0) (= (select |#memory_int| ULTIMATE.start_main_~a~0.base) .cse0) (= ULTIMATE.start_main_~y~0 ULTIMATE.start_lcp_~y))) [2021-01-06 17:11:09,407 INFO L189 CegarLoopUtils]: For program point L18-6(lines 18 20) no Hoare annotation was computed. [2021-01-06 17:11:09,407 INFO L189 CegarLoopUtils]: For program point L6(line 6) no Hoare annotation was computed. [2021-01-06 17:11:09,407 INFO L189 CegarLoopUtils]: For program point L6-2(line 6) no Hoare annotation was computed. [2021-01-06 17:11:09,407 INFO L189 CegarLoopUtils]: For program point L6-4(line 6) no Hoare annotation was computed. [2021-01-06 17:11:09,416 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.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 17:11:09,419 INFO L168 Benchmark]: Toolchain (without parser) took 4804.88 ms. Allocated memory was 161.5 MB in the beginning and 210.8 MB in the end (delta: 49.3 MB). Free memory was 137.2 MB in the beginning and 170.9 MB in the end (delta: -33.7 MB). Peak memory consumption was 15.8 MB. Max. memory is 8.0 GB. [2021-01-06 17:11:09,419 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 161.5 MB. Free memory is still 133.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-01-06 17:11:09,420 INFO L168 Benchmark]: CACSL2BoogieTranslator took 465.01 ms. Allocated memory is still 161.5 MB. Free memory was 137.0 MB in the beginning and 126.6 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-01-06 17:11:09,421 INFO L168 Benchmark]: Boogie Procedure Inliner took 89.55 ms. Allocated memory is still 161.5 MB. Free memory was 126.4 MB in the beginning and 124.6 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-01-06 17:11:09,422 INFO L168 Benchmark]: Boogie Preprocessor took 72.34 ms. Allocated memory is still 161.5 MB. Free memory was 124.6 MB in the beginning and 123.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-01-06 17:11:09,422 INFO L168 Benchmark]: RCFGBuilder took 725.33 ms. Allocated memory is still 161.5 MB. Free memory was 123.2 MB in the beginning and 141.5 MB in the end (delta: -18.3 MB). Peak memory consumption was 18.4 MB. Max. memory is 8.0 GB. [2021-01-06 17:11:09,423 INFO L168 Benchmark]: TraceAbstraction took 3435.88 ms. Allocated memory was 161.5 MB in the beginning and 210.8 MB in the end (delta: 49.3 MB). Free memory was 141.0 MB in the beginning and 170.9 MB in the end (delta: -29.9 MB). Peak memory consumption was 20.4 MB. Max. memory is 8.0 GB. [2021-01-06 17:11:09,428 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 161.5 MB. Free memory is still 133.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 465.01 ms. Allocated memory is still 161.5 MB. Free memory was 137.0 MB in the beginning and 126.6 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 89.55 ms. Allocated memory is still 161.5 MB. Free memory was 126.4 MB in the beginning and 124.6 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 72.34 ms. Allocated memory is still 161.5 MB. Free memory was 124.6 MB in the beginning and 123.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 725.33 ms. Allocated memory is still 161.5 MB. Free memory was 123.2 MB in the beginning and 141.5 MB in the end (delta: -18.3 MB). Peak memory consumption was 18.4 MB. Max. memory is 8.0 GB. * TraceAbstraction took 3435.88 ms. Allocated memory was 161.5 MB in the beginning and 210.8 MB in the end (delta: 49.3 MB). Free memory was 141.0 MB in the beginning and 170.9 MB in the end (delta: -29.9 MB). Peak memory consumption was 20.4 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 13]: 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...