/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/loop-invgen/large_const.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 06:56:00,817 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 06:56:00,820 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 06:56:00,872 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-12-23 06:56:00,905 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 06:56:00,909 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 06:56:00,911 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 06:56:00,913 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 06:56:00,915 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 06:56:00,919 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 06:56:00,927 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 06:56:00,931 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 06:56:00,935 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 06:56:00,937 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 06:56:00,939 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 06:56:00,957 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 06:56:00,967 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-23 06:56:00,981 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 06:56:00,982 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 06:56:00,983 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 06:56:00,984 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-23 06:56:01,039 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 06:56:01,039 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 06:56:01,044 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 06:56:01,044 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 06:56:01,045 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 06:56:01,045 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 06:56:01,045 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 06:56:01,045 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 06:56:01,046 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 06:56:01,046 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 06:56:01,047 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 06:56:01,047 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 06:56:01,047 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 06:56:01,048 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 06:56:01,048 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 06:56:01,048 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 06:56:01,048 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 06:56:01,048 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 06:56:01,049 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 06:56:01,049 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 06:56:01,049 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 06:56:01,049 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 06:56:01,050 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 06:56:01,050 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 06:56:01,050 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 06:56:01,050 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 06:56:01,472 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 06:56:01,511 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 06:56:01,515 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 06:56:01,516 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 06:56:01,517 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 06:56:01,518 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-invgen/large_const.i [2020-12-23 06:56:01,595 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/75ce0f5ed/8bf46a69be1c4127995642e71831bb09/FLAG4a94b117d [2020-12-23 06:56:02,247 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 06:56:02,248 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/loop-invgen/large_const.i [2020-12-23 06:56:02,256 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/75ce0f5ed/8bf46a69be1c4127995642e71831bb09/FLAG4a94b117d [2020-12-23 06:56:02,611 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/75ce0f5ed/8bf46a69be1c4127995642e71831bb09 [2020-12-23 06:56:02,614 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 06:56:02,620 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 06:56:02,624 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 06:56:02,624 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 06:56:02,628 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 06:56:02,630 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 06:56:02" (1/1) ... [2020-12-23 06:56:02,632 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72b38baa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:56:02, skipping insertion in model container [2020-12-23 06:56:02,632 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 06:56:02" (1/1) ... [2020-12-23 06:56:02,641 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 06:56:02,664 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-23 06:56:02,874 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/loop-invgen/large_const.i[893,906] left hand side expression in assignment: lhs: VariableLHS[~n~0,] left hand side expression in assignment: lhs: VariableLHS[~k~0,] left hand side expression in assignment: lhs: VariableLHS[~i~0,] left hand side expression in assignment: lhs: VariableLHS[~v~0,] left hand side expression in assignment: lhs: VariableLHS[~j~0,] [2020-12-23 06:56:02,893 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 06:56:02,905 INFO L203 MainTranslator]: Completed pre-run [2020-12-23 06:56:02,921 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/loop-invgen/large_const.i[893,906] left hand side expression in assignment: lhs: VariableLHS[~n~0,] left hand side expression in assignment: lhs: VariableLHS[~k~0,] left hand side expression in assignment: lhs: VariableLHS[~i~0,] left hand side expression in assignment: lhs: VariableLHS[~v~0,] left hand side expression in assignment: lhs: VariableLHS[~j~0,] [2020-12-23 06:56:02,928 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 06:56:02,946 INFO L208 MainTranslator]: Completed translation [2020-12-23 06:56:02,947 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:56:02 WrapperNode [2020-12-23 06:56:02,947 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 06:56:02,948 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 06:56:02,949 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 06:56:02,949 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 06:56:02,958 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:56:02" (1/1) ... [2020-12-23 06:56:02,967 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:56:02" (1/1) ... [2020-12-23 06:56:02,991 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 06:56:02,992 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 06:56:02,992 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 06:56:02,992 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 06:56:03,002 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:56:02" (1/1) ... [2020-12-23 06:56:03,003 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:56:02" (1/1) ... [2020-12-23 06:56:03,004 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:56:02" (1/1) ... [2020-12-23 06:56:03,005 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:56:02" (1/1) ... [2020-12-23 06:56:03,009 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:56:02" (1/1) ... [2020-12-23 06:56:03,013 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:56:02" (1/1) ... [2020-12-23 06:56:03,015 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:56:02" (1/1) ... [2020-12-23 06:56:03,018 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 06:56:03,019 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 06:56:03,019 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 06:56:03,019 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 06:56:03,020 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:56:02" (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 [2020-12-23 06:56:03,137 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 06:56:03,137 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 06:56:03,137 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 06:56:03,137 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 06:56:03,467 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 06:56:03,468 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2020-12-23 06:56:03,469 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 06:56:03 BoogieIcfgContainer [2020-12-23 06:56:03,470 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 06:56:03,471 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 06:56:03,472 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 06:56:03,476 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 06:56:03,477 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 06:56:02" (1/3) ... [2020-12-23 06:56:03,478 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b1297a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 06:56:03, skipping insertion in model container [2020-12-23 06:56:03,478 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:56:02" (2/3) ... [2020-12-23 06:56:03,478 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b1297a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 06:56:03, skipping insertion in model container [2020-12-23 06:56:03,479 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 06:56:03" (3/3) ... [2020-12-23 06:56:03,481 INFO L111 eAbstractionObserver]: Analyzing ICFG large_const.i [2020-12-23 06:56:03,490 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 06:56:03,497 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-23 06:56:03,521 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-23 06:56:03,580 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 06:56:03,580 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 06:56:03,580 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 06:56:03,581 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 06:56:03,581 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 06:56:03,581 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 06:56:03,581 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 06:56:03,581 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 06:56:03,617 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2020-12-23 06:56:03,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-23 06:56:03,630 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 06:56:03,634 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 06:56:03,635 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 06:56:03,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 06:56:03,644 INFO L82 PathProgramCache]: Analyzing trace with hash 200473929, now seen corresponding path program 1 times [2020-12-23 06:56:03,655 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 06:56:03,656 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439783429] [2020-12-23 06:56:03,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 06:56:03,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:56:03,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 06:56:03,885 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439783429] [2020-12-23 06:56:03,886 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 06:56:03,886 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 06:56:03,887 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631819892] [2020-12-23 06:56:03,892 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-23 06:56:03,893 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 06:56:03,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-23 06:56:03,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 06:56:03,920 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 2 states. [2020-12-23 06:56:03,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 06:56:03,941 INFO L93 Difference]: Finished difference Result 27 states and 37 transitions. [2020-12-23 06:56:03,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-23 06:56:03,942 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-12-23 06:56:03,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 06:56:03,965 INFO L225 Difference]: With dead ends: 27 [2020-12-23 06:56:03,965 INFO L226 Difference]: Without dead ends: 13 [2020-12-23 06:56:03,969 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 06:56:03,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2020-12-23 06:56:04,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2020-12-23 06:56:04,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-12-23 06:56:04,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 16 transitions. [2020-12-23 06:56:04,011 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 16 transitions. Word has length 8 [2020-12-23 06:56:04,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 06:56:04,012 INFO L481 AbstractCegarLoop]: Abstraction has 13 states and 16 transitions. [2020-12-23 06:56:04,012 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-23 06:56:04,012 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 16 transitions. [2020-12-23 06:56:04,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-23 06:56:04,013 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 06:56:04,014 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 06:56:04,014 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 06:56:04,015 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 06:56:04,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 06:56:04,019 INFO L82 PathProgramCache]: Analyzing trace with hash 182003509, now seen corresponding path program 1 times [2020-12-23 06:56:04,020 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 06:56:04,020 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336345609] [2020-12-23 06:56:04,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 06:56:04,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:56:04,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 06:56:04,149 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336345609] [2020-12-23 06:56:04,150 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 06:56:04,150 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 06:56:04,150 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566195962] [2020-12-23 06:56:04,152 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 06:56:04,152 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 06:56:04,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 06:56:04,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-23 06:56:04,154 INFO L87 Difference]: Start difference. First operand 13 states and 16 transitions. Second operand 5 states. [2020-12-23 06:56:04,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 06:56:04,237 INFO L93 Difference]: Finished difference Result 21 states and 25 transitions. [2020-12-23 06:56:04,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 06:56:04,238 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2020-12-23 06:56:04,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 06:56:04,239 INFO L225 Difference]: With dead ends: 21 [2020-12-23 06:56:04,239 INFO L226 Difference]: Without dead ends: 14 [2020-12-23 06:56:04,241 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-23 06:56:04,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-12-23 06:56:04,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2020-12-23 06:56:04,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-12-23 06:56:04,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 17 transitions. [2020-12-23 06:56:04,245 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 17 transitions. Word has length 8 [2020-12-23 06:56:04,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 06:56:04,246 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 17 transitions. [2020-12-23 06:56:04,246 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 06:56:04,246 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 17 transitions. [2020-12-23 06:56:04,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-23 06:56:04,247 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 06:56:04,247 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 06:56:04,247 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-23 06:56:04,248 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 06:56:04,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 06:56:04,249 INFO L82 PathProgramCache]: Analyzing trace with hash -52175062, now seen corresponding path program 1 times [2020-12-23 06:56:04,249 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 06:56:04,249 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672497760] [2020-12-23 06:56:04,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 06:56:04,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:56:04,431 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 06:56:04,431 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672497760] [2020-12-23 06:56:04,432 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1145597266] [2020-12-23 06:56:04,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 06:56:04,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:56:04,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-23 06:56:04,557 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 06:56:04,685 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 06:56:04,685 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 06:56:04,685 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2020-12-23 06:56:04,686 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292613635] [2020-12-23 06:56:04,686 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 06:56:04,687 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 06:56:04,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 06:56:04,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-12-23 06:56:04,688 INFO L87 Difference]: Start difference. First operand 14 states and 17 transitions. Second operand 8 states. [2020-12-23 06:56:04,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 06:56:04,931 INFO L93 Difference]: Finished difference Result 33 states and 41 transitions. [2020-12-23 06:56:04,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-23 06:56:04,932 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 11 [2020-12-23 06:56:04,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 06:56:04,933 INFO L225 Difference]: With dead ends: 33 [2020-12-23 06:56:04,933 INFO L226 Difference]: Without dead ends: 31 [2020-12-23 06:56:04,934 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-12-23 06:56:04,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-12-23 06:56:04,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 20. [2020-12-23 06:56:04,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-12-23 06:56:04,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 25 transitions. [2020-12-23 06:56:04,940 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 25 transitions. Word has length 11 [2020-12-23 06:56:04,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 06:56:04,941 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 25 transitions. [2020-12-23 06:56:04,941 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 06:56:04,941 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 25 transitions. [2020-12-23 06:56:04,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-23 06:56:04,942 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 06:56:04,942 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 06:56:05,156 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-12-23 06:56:05,157 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 06:56:05,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 06:56:05,158 INFO L82 PathProgramCache]: Analyzing trace with hash 566429229, now seen corresponding path program 1 times [2020-12-23 06:56:05,159 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 06:56:05,159 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208094029] [2020-12-23 06:56:05,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 06:56:05,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:56:05,268 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 06:56:05,269 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208094029] [2020-12-23 06:56:05,269 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1621190135] [2020-12-23 06:56:05,269 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 [2020-12-23 06:56:05,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:56:05,342 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-23 06:56:05,344 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 06:56:05,424 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 06:56:05,425 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 06:56:05,425 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2020-12-23 06:56:05,425 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107505191] [2020-12-23 06:56:05,426 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 06:56:05,426 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 06:56:05,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 06:56:05,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-12-23 06:56:05,427 INFO L87 Difference]: Start difference. First operand 20 states and 25 transitions. Second operand 8 states. [2020-12-23 06:56:05,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 06:56:05,648 INFO L93 Difference]: Finished difference Result 39 states and 49 transitions. [2020-12-23 06:56:05,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-23 06:56:05,649 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 12 [2020-12-23 06:56:05,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 06:56:05,650 INFO L225 Difference]: With dead ends: 39 [2020-12-23 06:56:05,650 INFO L226 Difference]: Without dead ends: 37 [2020-12-23 06:56:05,651 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-12-23 06:56:05,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-12-23 06:56:05,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 26. [2020-12-23 06:56:05,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-12-23 06:56:05,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 35 transitions. [2020-12-23 06:56:05,658 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 35 transitions. Word has length 12 [2020-12-23 06:56:05,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 06:56:05,659 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 35 transitions. [2020-12-23 06:56:05,659 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 06:56:05,659 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 35 transitions. [2020-12-23 06:56:05,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-23 06:56:05,660 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 06:56:05,660 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 06:56:05,874 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 06:56:05,875 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 06:56:05,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 06:56:05,876 INFO L82 PathProgramCache]: Analyzing trace with hash 623687531, now seen corresponding path program 1 times [2020-12-23 06:56:05,877 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 06:56:05,877 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082150150] [2020-12-23 06:56:05,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 06:56:05,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:56:05,964 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 06:56:05,965 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082150150] [2020-12-23 06:56:05,966 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1694097753] [2020-12-23 06:56:05,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 06:56:06,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:56:06,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-23 06:56:06,036 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 06:56:06,173 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 06:56:06,173 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 06:56:06,174 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2020-12-23 06:56:06,174 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160386404] [2020-12-23 06:56:06,174 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 06:56:06,174 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 06:56:06,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 06:56:06,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-12-23 06:56:06,180 INFO L87 Difference]: Start difference. First operand 26 states and 35 transitions. Second operand 8 states. [2020-12-23 06:56:06,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 06:56:06,404 INFO L93 Difference]: Finished difference Result 43 states and 56 transitions. [2020-12-23 06:56:06,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-23 06:56:06,405 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 12 [2020-12-23 06:56:06,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 06:56:06,408 INFO L225 Difference]: With dead ends: 43 [2020-12-23 06:56:06,408 INFO L226 Difference]: Without dead ends: 41 [2020-12-23 06:56:06,410 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-12-23 06:56:06,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-12-23 06:56:06,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 31. [2020-12-23 06:56:06,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-12-23 06:56:06,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 44 transitions. [2020-12-23 06:56:06,438 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 44 transitions. Word has length 12 [2020-12-23 06:56:06,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 06:56:06,438 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 44 transitions. [2020-12-23 06:56:06,439 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 06:56:06,439 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 44 transitions. [2020-12-23 06:56:06,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-23 06:56:06,440 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 06:56:06,440 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 06:56:06,641 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 06:56:06,642 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 06:56:06,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 06:56:06,643 INFO L82 PathProgramCache]: Analyzing trace with hash 435730244, now seen corresponding path program 1 times [2020-12-23 06:56:06,643 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 06:56:06,644 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141508416] [2020-12-23 06:56:06,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 06:56:06,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:56:06,718 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 06:56:06,719 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141508416] [2020-12-23 06:56:06,720 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1913744793] [2020-12-23 06:56:06,720 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 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 06:56:06,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:56:06,779 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-23 06:56:06,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 06:56:06,888 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 06:56:06,888 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-23 06:56:06,889 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2020-12-23 06:56:06,892 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911227] [2020-12-23 06:56:06,893 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 06:56:06,893 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 06:56:06,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 06:56:06,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-12-23 06:56:06,894 INFO L87 Difference]: Start difference. First operand 31 states and 44 transitions. Second operand 5 states. [2020-12-23 06:56:06,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 06:56:06,932 INFO L93 Difference]: Finished difference Result 37 states and 50 transitions. [2020-12-23 06:56:06,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 06:56:06,932 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-12-23 06:56:06,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 06:56:06,938 INFO L225 Difference]: With dead ends: 37 [2020-12-23 06:56:06,938 INFO L226 Difference]: Without dead ends: 27 [2020-12-23 06:56:06,941 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-12-23 06:56:06,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-12-23 06:56:06,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-12-23 06:56:06,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-12-23 06:56:06,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 36 transitions. [2020-12-23 06:56:06,948 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 36 transitions. Word has length 14 [2020-12-23 06:56:06,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 06:56:06,949 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 36 transitions. [2020-12-23 06:56:06,949 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 06:56:06,951 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 36 transitions. [2020-12-23 06:56:06,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-23 06:56:06,953 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 06:56:06,953 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 06:56:07,154 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 06:56:07,155 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 06:56:07,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 06:56:07,156 INFO L82 PathProgramCache]: Analyzing trace with hash 521583522, now seen corresponding path program 1 times [2020-12-23 06:56:07,156 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 06:56:07,157 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101782433] [2020-12-23 06:56:07,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 06:56:07,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:56:07,220 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 06:56:07,221 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101782433] [2020-12-23 06:56:07,221 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2128596583] [2020-12-23 06:56:07,221 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 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 06:56:07,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:56:07,281 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-23 06:56:07,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 06:56:07,348 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 06:56:07,348 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-23 06:56:07,348 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2020-12-23 06:56:07,350 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991715182] [2020-12-23 06:56:07,350 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 06:56:07,354 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 06:56:07,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 06:56:07,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-12-23 06:56:07,357 INFO L87 Difference]: Start difference. First operand 27 states and 36 transitions. Second operand 5 states. [2020-12-23 06:56:07,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 06:56:07,366 INFO L93 Difference]: Finished difference Result 30 states and 39 transitions. [2020-12-23 06:56:07,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 06:56:07,367 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-12-23 06:56:07,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 06:56:07,367 INFO L225 Difference]: With dead ends: 30 [2020-12-23 06:56:07,367 INFO L226 Difference]: Without dead ends: 0 [2020-12-23 06:56:07,369 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-12-23 06:56:07,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-23 06:56:07,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-23 06:56:07,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-23 06:56:07,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-23 06:56:07,370 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2020-12-23 06:56:07,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 06:56:07,370 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-23 06:56:07,370 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 06:56:07,370 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-23 06:56:07,370 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-23 06:56:07,583 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-12-23 06:56:07,587 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-23 06:56:07,947 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 30 [2020-12-23 06:56:07,952 INFO L189 CegarLoopUtils]: For program point L31(line 31) no Hoare annotation was computed. [2020-12-23 06:56:07,952 INFO L189 CegarLoopUtils]: For program point L19(line 19) no Hoare annotation was computed. [2020-12-23 06:56:07,952 INFO L189 CegarLoopUtils]: For program point L40(lines 40 43) no Hoare annotation was computed. [2020-12-23 06:56:07,953 INFO L185 CegarLoopUtils]: At program point L40-2(lines 34 44) the Hoare annotation is: (let ((.cse0 (<= 4000 ULTIMATE.start_main_~c1~0)) (.cse1 (<= 2000 ULTIMATE.start_main_~c2~0)) (.cse2 (<= 10000 ULTIMATE.start_main_~c3~0))) (or (and (= ULTIMATE.start_main_~i~0 0) (= ULTIMATE.start_main_~k~0 0) .cse0 .cse1 .cse2) (and (< ULTIMATE.start_main_~n~0 2) .cse0 .cse1 .cse2 (<= 2000 ULTIMATE.start_main_~k~0) (<= 1 ULTIMATE.start_main_~i~0)))) [2020-12-23 06:56:07,953 INFO L189 CegarLoopUtils]: For program point L-1(line -1) no Hoare annotation was computed. [2020-12-23 06:56:07,953 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-23 06:56:07,953 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-12-23 06:56:07,953 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2020-12-23 06:56:07,954 INFO L189 CegarLoopUtils]: For program point L37(line 37) no Hoare annotation was computed. [2020-12-23 06:56:07,954 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-23 06:56:07,954 INFO L185 CegarLoopUtils]: At program point L46-2(lines 46 50) the Hoare annotation is: (let ((.cse0 (< ULTIMATE.start_main_~n~0 2)) (.cse1 (<= 4000 ULTIMATE.start_main_~c1~0)) (.cse2 (<= 2000 ULTIMATE.start_main_~c2~0)) (.cse3 (<= 10000 ULTIMATE.start_main_~c3~0))) (or (and .cse0 (<= 1 ULTIMATE.start_main_~j~0) .cse1 .cse2 .cse3) (and (= ULTIMATE.start_main_~i~0 0) (= ULTIMATE.start_main_~j~0 0) (<= ULTIMATE.start_main_~n~0 0)) (and (<= 0 ULTIMATE.start_main_~j~0) .cse0 .cse1 .cse2 .cse3 (<= 2000 ULTIMATE.start_main_~k~0)))) [2020-12-23 06:56:07,954 INFO L189 CegarLoopUtils]: For program point L46-3(lines 46 50) no Hoare annotation was computed. [2020-12-23 06:56:07,954 INFO L189 CegarLoopUtils]: For program point L38(lines 38 43) no Hoare annotation was computed. [2020-12-23 06:56:07,955 INFO L189 CegarLoopUtils]: For program point L34-2(lines 34 44) no Hoare annotation was computed. [2020-12-23 06:56:07,955 INFO L192 CegarLoopUtils]: At program point L51(lines 24 52) the Hoare annotation is: true [2020-12-23 06:56:07,955 INFO L189 CegarLoopUtils]: For program point L18(lines 18 20) no Hoare annotation was computed. [2020-12-23 06:56:07,955 INFO L185 CegarLoopUtils]: At program point L18-2(lines 17 22) the Hoare annotation is: (and (<= 0 ULTIMATE.start_main_~j~0) (< ULTIMATE.start_main_~n~0 2) (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (<= 4000 ULTIMATE.start_main_~c1~0) (<= 2000 ULTIMATE.start_main_~c2~0) (<= 10000 ULTIMATE.start_main_~c3~0)) [2020-12-23 06:56:07,976 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.12 06:56:07 BoogieIcfgContainer [2020-12-23 06:56:07,976 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-23 06:56:07,977 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-23 06:56:07,977 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-23 06:56:07,977 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-23 06:56:07,978 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 06:56:03" (3/4) ... [2020-12-23 06:56:07,982 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-23 06:56:07,994 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2020-12-23 06:56:07,994 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-23 06:56:07,994 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-12-23 06:56:07,995 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-23 06:56:08,044 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/loop-invgen/large_const.i-witness.graphml [2020-12-23 06:56:08,044 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-23 06:56:08,049 INFO L168 Benchmark]: Toolchain (without parser) took 5427.46 ms. Allocated memory was 153.1 MB in the beginning and 184.5 MB in the end (delta: 31.5 MB). Free memory was 128.5 MB in the beginning and 144.2 MB in the end (delta: -15.6 MB). Peak memory consumption was 16.9 MB. Max. memory is 8.0 GB. [2020-12-23 06:56:08,049 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 153.1 MB. Free memory is still 126.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 06:56:08,050 INFO L168 Benchmark]: CACSL2BoogieTranslator took 323.58 ms. Allocated memory is still 153.1 MB. Free memory was 128.4 MB in the beginning and 118.1 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-12-23 06:56:08,051 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.79 ms. Allocated memory is still 153.1 MB. Free memory was 118.1 MB in the beginning and 116.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-23 06:56:08,053 INFO L168 Benchmark]: Boogie Preprocessor took 26.04 ms. Allocated memory is still 153.1 MB. Free memory was 116.6 MB in the beginning and 115.5 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-23 06:56:08,054 INFO L168 Benchmark]: RCFGBuilder took 451.08 ms. Allocated memory is still 153.1 MB. Free memory was 115.5 MB in the beginning and 101.8 MB in the end (delta: 13.7 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2020-12-23 06:56:08,055 INFO L168 Benchmark]: TraceAbstraction took 4505.10 ms. Allocated memory was 153.1 MB in the beginning and 184.5 MB in the end (delta: 31.5 MB). Free memory was 101.4 MB in the beginning and 146.8 MB in the end (delta: -45.3 MB). Peak memory consumption was 51.9 MB. Max. memory is 8.0 GB. [2020-12-23 06:56:08,058 INFO L168 Benchmark]: Witness Printer took 67.19 ms. Allocated memory is still 184.5 MB. Free memory was 146.8 MB in the beginning and 144.2 MB in the end (delta: 2.6 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-12-23 06:56:08,065 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 153.1 MB. Free memory is still 126.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 323.58 ms. Allocated memory is still 153.1 MB. Free memory was 128.4 MB in the beginning and 118.1 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 42.79 ms. Allocated memory is still 153.1 MB. Free memory was 118.1 MB in the beginning and 116.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 26.04 ms. Allocated memory is still 153.1 MB. Free memory was 116.6 MB in the beginning and 115.5 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 451.08 ms. Allocated memory is still 153.1 MB. Free memory was 115.5 MB in the beginning and 101.8 MB in the end (delta: 13.7 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 4505.10 ms. Allocated memory was 153.1 MB in the beginning and 184.5 MB in the end (delta: 31.5 MB). Free memory was 101.4 MB in the beginning and 146.8 MB in the end (delta: -45.3 MB). Peak memory consumption was 51.9 MB. Max. memory is 8.0 GB. * Witness Printer took 67.19 ms. Allocated memory is still 184.5 MB. Free memory was 146.8 MB in the beginning and 144.2 MB in the end (delta: 2.6 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 19]: 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 1 specifications checked. All of them hold - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: ((((0 <= j && n < 2) && !(0 == cond)) && 4000 <= c1) && 2000 <= c2) && 10000 <= c3 - InvariantResult [Line: 34]: Loop Invariant Derived loop invariant: ((((i == 0 && k == 0) && 4000 <= c1) && 2000 <= c2) && 10000 <= c3) || (((((n < 2 && 4000 <= c1) && 2000 <= c2) && 10000 <= c3) && 2000 <= k) && 1 <= i) - InvariantResult [Line: 46]: Loop Invariant Derived loop invariant: (((((n < 2 && 1 <= j) && 4000 <= c1) && 2000 <= c2) && 10000 <= c3) || ((i == 0 && j == 0) && n <= 0)) || (((((0 <= j && n < 2) && 4000 <= c1) && 2000 <= c2) && 10000 <= c3) && 2000 <= k) - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 17 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.0s, OverallIterations: 7, TraceHistogramMax: 2, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 114 SDtfs, 124 SDslu, 183 SDs, 0 SdLazy, 203 SolverSat, 32 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 113 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 32 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 13 NumberOfFragments, 103 HoareAnnotationTreeSize, 4 FomulaSimplifications, 543 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 4 FomulaSimplificationsInter, 285 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 144 NumberOfCodeBlocks, 144 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 132 ConstructedInterpolants, 0 QuantifiedInterpolants, 4851 SizeOfPredicates, 12 NumberOfNonLiveVariables, 400 ConjunctsInSsa, 35 ConjunctsInUnsatCore, 12 InterpolantComputations, 4 PerfectInterpolantSequences, 12/22 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...