java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/array-examples/standard_copy9_ground-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 19:53:11,998 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 19:53:12,000 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 19:53:12,013 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 19:53:12,013 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 19:53:12,015 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 19:53:12,016 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 19:53:12,018 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 19:53:12,020 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 19:53:12,020 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 19:53:12,021 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 19:53:12,023 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 19:53:12,023 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 19:53:12,024 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 19:53:12,025 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 19:53:12,026 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 19:53:12,030 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 19:53:12,031 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 19:53:12,033 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 19:53:12,035 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 19:53:12,037 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 19:53:12,038 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 19:53:12,039 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 19:53:12,040 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 19:53:12,042 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-13 19:53:12,050 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 19:53:12,051 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 19:53:12,051 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 19:53:12,052 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 19:53:12,074 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 19:53:12,074 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 19:53:12,076 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 19:53:12,076 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 19:53:12,077 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 19:53:12,077 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 19:53:12,077 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 19:53:12,077 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 19:53:12,078 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 19:53:12,078 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 19:53:12,079 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 19:53:12,079 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 19:53:12,079 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 19:53:12,080 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 19:53:12,080 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 19:53:12,080 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 19:53:12,080 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 19:53:12,081 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 19:53:12,081 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 19:53:12,081 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 19:53:12,081 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 19:53:12,082 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 19:53:12,082 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 19:53:12,082 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 19:53:12,082 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 19:53:12,082 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 19:53:12,083 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 19:53:12,083 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 19:53:12,083 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-10-13 19:53:12,388 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 19:53:12,404 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 19:53:12,408 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 19:53:12,410 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 19:53:12,410 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 19:53:12,411 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_copy9_ground-1.i [2019-10-13 19:53:12,484 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/22285f8de/1585ab1d182f4094be19b0711da0f29f/FLAGc7226a029 [2019-10-13 19:53:12,989 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 19:53:12,990 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_copy9_ground-1.i [2019-10-13 19:53:12,998 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/22285f8de/1585ab1d182f4094be19b0711da0f29f/FLAGc7226a029 [2019-10-13 19:53:13,389 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/22285f8de/1585ab1d182f4094be19b0711da0f29f [2019-10-13 19:53:13,402 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 19:53:13,403 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 19:53:13,408 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 19:53:13,408 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 19:53:13,412 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 19:53:13,413 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:53:13" (1/1) ... [2019-10-13 19:53:13,416 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7097ba4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:13, skipping insertion in model container [2019-10-13 19:53:13,416 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:53:13" (1/1) ... [2019-10-13 19:53:13,424 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 19:53:13,445 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 19:53:13,685 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:53:13,688 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 19:53:13,719 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:53:13,830 INFO L192 MainTranslator]: Completed translation [2019-10-13 19:53:13,831 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:13 WrapperNode [2019-10-13 19:53:13,831 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 19:53:13,831 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 19:53:13,832 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 19:53:13,832 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 19:53:13,841 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:13" (1/1) ... [2019-10-13 19:53:13,841 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:13" (1/1) ... [2019-10-13 19:53:13,849 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:13" (1/1) ... [2019-10-13 19:53:13,849 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:13" (1/1) ... [2019-10-13 19:53:13,862 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:13" (1/1) ... [2019-10-13 19:53:13,872 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:13" (1/1) ... [2019-10-13 19:53:13,874 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:13" (1/1) ... [2019-10-13 19:53:13,877 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 19:53:13,878 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 19:53:13,878 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 19:53:13,878 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 19:53:13,879 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:13" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2019-10-13 19:53:13,939 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 19:53:13,939 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 19:53:13,939 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-13 19:53:13,939 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 19:53:13,940 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 19:53:13,940 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-13 19:53:13,941 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 19:53:13,941 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 19:53:13,941 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 19:53:13,941 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 19:53:13,941 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 19:53:13,941 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 19:53:13,941 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 19:53:13,942 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 19:53:14,374 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 19:53:14,375 INFO L284 CfgBuilder]: Removed 11 assume(true) statements. [2019-10-13 19:53:14,376 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:53:14 BoogieIcfgContainer [2019-10-13 19:53:14,376 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 19:53:14,378 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 19:53:14,378 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 19:53:14,381 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 19:53:14,381 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:53:13" (1/3) ... [2019-10-13 19:53:14,382 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@119cf4d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:53:14, skipping insertion in model container [2019-10-13 19:53:14,382 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:13" (2/3) ... [2019-10-13 19:53:14,383 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@119cf4d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:53:14, skipping insertion in model container [2019-10-13 19:53:14,383 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:53:14" (3/3) ... [2019-10-13 19:53:14,385 INFO L109 eAbstractionObserver]: Analyzing ICFG standard_copy9_ground-1.i [2019-10-13 19:53:14,394 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 19:53:14,414 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 19:53:14,430 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 19:53:14,452 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 19:53:14,453 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 19:53:14,453 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 19:53:14,453 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 19:53:14,453 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 19:53:14,453 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 19:53:14,454 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 19:53:14,454 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 19:53:14,470 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states. [2019-10-13 19:53:14,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-10-13 19:53:14,476 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:53:14,477 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:53:14,478 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:53:14,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:53:14,483 INFO L82 PathProgramCache]: Analyzing trace with hash -178932642, now seen corresponding path program 1 times [2019-10-13 19:53:14,490 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 19:53:14,491 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063967826] [2019-10-13 19:53:14,491 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:53:14,491 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:53:14,492 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:53:14,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:53:14,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:53:14,654 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063967826] [2019-10-13 19:53:14,655 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:53:14,655 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-13 19:53:14,656 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189862920] [2019-10-13 19:53:14,661 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 19:53:14,663 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 19:53:14,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 19:53:14,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 19:53:14,685 INFO L87 Difference]: Start difference. First operand 51 states. Second operand 2 states. [2019-10-13 19:53:14,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:53:14,713 INFO L93 Difference]: Finished difference Result 94 states and 137 transitions. [2019-10-13 19:53:14,713 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 19:53:14,714 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 31 [2019-10-13 19:53:14,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:53:14,721 INFO L225 Difference]: With dead ends: 94 [2019-10-13 19:53:14,722 INFO L226 Difference]: Without dead ends: 46 [2019-10-13 19:53:14,725 INFO L600 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 [2019-10-13 19:53:14,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2019-10-13 19:53:14,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2019-10-13 19:53:14,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2019-10-13 19:53:14,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 56 transitions. [2019-10-13 19:53:14,763 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 56 transitions. Word has length 31 [2019-10-13 19:53:14,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:53:14,764 INFO L462 AbstractCegarLoop]: Abstraction has 46 states and 56 transitions. [2019-10-13 19:53:14,764 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 19:53:14,764 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 56 transitions. [2019-10-13 19:53:14,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-10-13 19:53:14,766 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:53:14,766 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:53:14,766 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:53:14,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:53:14,767 INFO L82 PathProgramCache]: Analyzing trace with hash 1311438022, now seen corresponding path program 1 times [2019-10-13 19:53:14,767 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 19:53:14,768 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965849668] [2019-10-13 19:53:14,768 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:53:14,768 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:53:14,768 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:53:14,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:53:14,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:53:14,883 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965849668] [2019-10-13 19:53:14,883 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:53:14,883 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 19:53:14,884 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397585083] [2019-10-13 19:53:14,885 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 19:53:14,886 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 19:53:14,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 19:53:14,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 19:53:14,887 INFO L87 Difference]: Start difference. First operand 46 states and 56 transitions. Second operand 3 states. [2019-10-13 19:53:14,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:53:14,920 INFO L93 Difference]: Finished difference Result 86 states and 106 transitions. [2019-10-13 19:53:14,921 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 19:53:14,921 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 31 [2019-10-13 19:53:14,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:53:14,923 INFO L225 Difference]: With dead ends: 86 [2019-10-13 19:53:14,923 INFO L226 Difference]: Without dead ends: 48 [2019-10-13 19:53:14,925 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 19:53:14,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2019-10-13 19:53:14,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 47. [2019-10-13 19:53:14,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2019-10-13 19:53:14,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 57 transitions. [2019-10-13 19:53:14,935 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 57 transitions. Word has length 31 [2019-10-13 19:53:14,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:53:14,936 INFO L462 AbstractCegarLoop]: Abstraction has 47 states and 57 transitions. [2019-10-13 19:53:14,936 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 19:53:14,936 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 57 transitions. [2019-10-13 19:53:14,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2019-10-13 19:53:14,937 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:53:14,938 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:53:14,938 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:53:14,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:53:14,939 INFO L82 PathProgramCache]: Analyzing trace with hash -953933084, now seen corresponding path program 1 times [2019-10-13 19:53:14,939 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 19:53:14,939 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069624944] [2019-10-13 19:53:14,940 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:53:14,940 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:53:14,940 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:53:14,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:53:15,030 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-13 19:53:15,031 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069624944] [2019-10-13 19:53:15,031 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:53:15,031 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 19:53:15,032 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533049257] [2019-10-13 19:53:15,032 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 19:53:15,033 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 19:53:15,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 19:53:15,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 19:53:15,033 INFO L87 Difference]: Start difference. First operand 47 states and 57 transitions. Second operand 3 states. [2019-10-13 19:53:15,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:53:15,170 INFO L93 Difference]: Finished difference Result 100 states and 127 transitions. [2019-10-13 19:53:15,170 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 19:53:15,171 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 33 [2019-10-13 19:53:15,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:53:15,172 INFO L225 Difference]: With dead ends: 100 [2019-10-13 19:53:15,172 INFO L226 Difference]: Without dead ends: 65 [2019-10-13 19:53:15,173 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 19:53:15,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2019-10-13 19:53:15,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 56. [2019-10-13 19:53:15,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2019-10-13 19:53:15,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 66 transitions. [2019-10-13 19:53:15,184 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 66 transitions. Word has length 33 [2019-10-13 19:53:15,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:53:15,185 INFO L462 AbstractCegarLoop]: Abstraction has 56 states and 66 transitions. [2019-10-13 19:53:15,185 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 19:53:15,185 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 66 transitions. [2019-10-13 19:53:15,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2019-10-13 19:53:15,187 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:53:15,187 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:53:15,187 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:53:15,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:53:15,188 INFO L82 PathProgramCache]: Analyzing trace with hash -753251022, now seen corresponding path program 1 times [2019-10-13 19:53:15,188 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 19:53:15,189 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432856314] [2019-10-13 19:53:15,189 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:53:15,189 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:53:15,189 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:53:15,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:53:15,391 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-10-13 19:53:15,392 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432856314] [2019-10-13 19:53:15,392 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1238665974] [2019-10-13 19:53:15,392 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/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 [2019-10-13 19:53:15,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:53:15,513 INFO L256 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 19:53:15,526 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:53:15,573 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-10-13 19:53:15,573 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 19:53:15,637 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-10-13 19:53:15,638 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [1859545366] [2019-10-13 19:53:15,648 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 52 [2019-10-13 19:53:15,712 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-13 19:53:15,712 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-13 19:53:15,769 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-10-13 19:53:15,771 INFO L272 AbstractInterpreter]: Visited 6 different actions 6 times. Never merged. Never widened. Performed 15 root evaluator evaluations with a maximum evaluation depth of 0. Performed 15 inverse root evaluator evaluations with a maximum inverse evaluation depth of 0. Never found a fixpoint. Largest state had 58 variables. [2019-10-13 19:53:15,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:53:15,775 INFO L536 sIntCurrentIteration]: Generating AbsInt predicates [2019-10-13 19:53:15,820 INFO L227 lantSequenceWeakener]: Weakened 4 states. On average, predicates are now at 100% of their original sizes. [2019-10-13 19:53:15,821 INFO L551 sIntCurrentIteration]: Unifying AI predicates [2019-10-13 19:53:15,823 INFO L553 sIntCurrentIteration]: We unified 50 AI predicates to 50 [2019-10-13 19:53:15,823 INFO L562 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-10-13 19:53:15,824 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2019-10-13 19:53:15,824 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4, 4, 4] total 8 [2019-10-13 19:53:15,825 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163983624] [2019-10-13 19:53:15,825 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 19:53:15,826 INFO L137 tionRefinementEngine]: Using predicate unifier AbsIntPredicateUnifier provided by strategy TAIPAN [2019-10-13 19:53:15,826 INFO L124 tionRefinementEngine]: Using hoare triple checker CachingHoareTripleCheckerMap provided by strategy [2019-10-13 19:53:15,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 19:53:15,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 19:53:15,827 INFO L87 Difference]: Start difference. First operand 56 states and 66 transitions. Second operand 2 states. [2019-10-13 19:53:15,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:53:15,830 INFO L93 Difference]: Finished difference Result 56 states and 66 transitions. [2019-10-13 19:53:15,830 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 19:53:15,831 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 51 [2019-10-13 19:53:15,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:53:15,831 INFO L225 Difference]: With dead ends: 56 [2019-10-13 19:53:15,832 INFO L226 Difference]: Without dead ends: 0 [2019-10-13 19:53:15,833 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 19:53:15,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-13 19:53:15,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-13 19:53:15,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-13 19:53:15,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-13 19:53:15,835 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 51 [2019-10-13 19:53:15,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:53:15,835 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-13 19:53:15,835 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 19:53:15,835 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-13 19:53:15,835 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-13 19:53:16,037 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:53:16,043 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-13 19:53:16,093 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2019-10-13 19:53:16,094 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2019-10-13 19:53:16,094 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-10-13 19:53:16,095 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-13 19:53:16,095 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-10-13 19:53:16,095 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-10-13 19:53:16,095 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-13 19:53:16,096 INFO L443 ceAbstractionStarter]: For program point L27-2(lines 27 29) no Hoare annotation was computed. [2019-10-13 19:53:16,096 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 4 53) no Hoare annotation was computed. [2019-10-13 19:53:16,096 INFO L439 ceAbstractionStarter]: At program point L27-3(lines 27 29) the Hoare annotation is: false [2019-10-13 19:53:16,096 INFO L443 ceAbstractionStarter]: For program point L27-4(lines 27 29) no Hoare annotation was computed. [2019-10-13 19:53:16,096 INFO L443 ceAbstractionStarter]: For program point L36-2(lines 36 38) no Hoare annotation was computed. [2019-10-13 19:53:16,096 INFO L439 ceAbstractionStarter]: At program point L36-3(lines 36 38) the Hoare annotation is: false [2019-10-13 19:53:16,096 INFO L443 ceAbstractionStarter]: For program point L36-4(lines 36 38) no Hoare annotation was computed. [2019-10-13 19:53:16,097 INFO L443 ceAbstractionStarter]: For program point L45-2(lines 45 47) no Hoare annotation was computed. [2019-10-13 19:53:16,097 INFO L439 ceAbstractionStarter]: At program point L45-3(lines 45 47) the Hoare annotation is: false [2019-10-13 19:53:16,097 INFO L443 ceAbstractionStarter]: For program point L45-4(lines 45 47) no Hoare annotation was computed. [2019-10-13 19:53:16,098 INFO L443 ceAbstractionStarter]: For program point L21-2(lines 21 23) no Hoare annotation was computed. [2019-10-13 19:53:16,098 INFO L439 ceAbstractionStarter]: At program point L21-3(lines 21 23) the Hoare annotation is: false [2019-10-13 19:53:16,098 INFO L443 ceAbstractionStarter]: For program point L21-4(lines 21 23) no Hoare annotation was computed. [2019-10-13 19:53:16,098 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 4 53) no Hoare annotation was computed. [2019-10-13 19:53:16,099 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 4 53) the Hoare annotation is: true [2019-10-13 19:53:16,099 INFO L443 ceAbstractionStarter]: For program point L30-2(lines 30 32) no Hoare annotation was computed. [2019-10-13 19:53:16,099 INFO L439 ceAbstractionStarter]: At program point L30-3(lines 30 32) the Hoare annotation is: false [2019-10-13 19:53:16,100 INFO L443 ceAbstractionStarter]: For program point L30-4(lines 30 32) no Hoare annotation was computed. [2019-10-13 19:53:16,100 INFO L443 ceAbstractionStarter]: For program point L39-2(lines 39 41) no Hoare annotation was computed. [2019-10-13 19:53:16,100 INFO L439 ceAbstractionStarter]: At program point L39-3(lines 39 41) the Hoare annotation is: false [2019-10-13 19:53:16,100 INFO L443 ceAbstractionStarter]: For program point L39-4(lines 39 41) no Hoare annotation was computed. [2019-10-13 19:53:16,100 INFO L443 ceAbstractionStarter]: For program point L24-2(lines 24 26) no Hoare annotation was computed. [2019-10-13 19:53:16,101 INFO L439 ceAbstractionStarter]: At program point L24-3(lines 24 26) the Hoare annotation is: false [2019-10-13 19:53:16,101 INFO L443 ceAbstractionStarter]: For program point L24-4(lines 24 26) no Hoare annotation was computed. [2019-10-13 19:53:16,101 INFO L443 ceAbstractionStarter]: For program point L49-2(lines 49 51) no Hoare annotation was computed. [2019-10-13 19:53:16,101 INFO L443 ceAbstractionStarter]: For program point L16-2(lines 16 19) no Hoare annotation was computed. [2019-10-13 19:53:16,102 INFO L439 ceAbstractionStarter]: At program point L49-3(lines 49 51) the Hoare annotation is: false [2019-10-13 19:53:16,102 INFO L439 ceAbstractionStarter]: At program point L16-3(lines 16 19) the Hoare annotation is: false [2019-10-13 19:53:16,103 INFO L443 ceAbstractionStarter]: For program point L49-4(lines 49 51) no Hoare annotation was computed. [2019-10-13 19:53:16,103 INFO L443 ceAbstractionStarter]: For program point L16-4(lines 16 19) no Hoare annotation was computed. [2019-10-13 19:53:16,103 INFO L443 ceAbstractionStarter]: For program point L33-2(lines 33 35) no Hoare annotation was computed. [2019-10-13 19:53:16,103 INFO L439 ceAbstractionStarter]: At program point L33-3(lines 33 35) the Hoare annotation is: false [2019-10-13 19:53:16,103 INFO L443 ceAbstractionStarter]: For program point L33-4(lines 33 35) no Hoare annotation was computed. [2019-10-13 19:53:16,103 INFO L439 ceAbstractionStarter]: At program point L50(line 50) the Hoare annotation is: false [2019-10-13 19:53:16,103 INFO L443 ceAbstractionStarter]: For program point L50-1(line 50) no Hoare annotation was computed. [2019-10-13 19:53:16,104 INFO L443 ceAbstractionStarter]: For program point L42-2(lines 42 44) no Hoare annotation was computed. [2019-10-13 19:53:16,105 INFO L439 ceAbstractionStarter]: At program point L42-3(lines 42 44) the Hoare annotation is: false [2019-10-13 19:53:16,106 INFO L443 ceAbstractionStarter]: For program point L42-4(lines 42 44) no Hoare annotation was computed. [2019-10-13 19:53:16,106 INFO L443 ceAbstractionStarter]: For program point L2-1(line 2) no Hoare annotation was computed. [2019-10-13 19:53:16,106 INFO L443 ceAbstractionStarter]: For program point L2-3(line 2) no Hoare annotation was computed. [2019-10-13 19:53:16,106 INFO L446 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(line 2) the Hoare annotation is: true [2019-10-13 19:53:16,106 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(line 2) no Hoare annotation was computed. [2019-10-13 19:53:16,106 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 2) no Hoare annotation was computed. [2019-10-13 19:53:16,107 INFO L443 ceAbstractionStarter]: For program point L2(line 2) no Hoare annotation was computed. [2019-10-13 19:53:16,118 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 07:53:16 BoogieIcfgContainer [2019-10-13 19:53:16,118 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-13 19:53:16,121 INFO L168 Benchmark]: Toolchain (without parser) took 2716.94 ms. Allocated memory was 142.6 MB in the beginning and 228.1 MB in the end (delta: 85.5 MB). Free memory was 100.3 MB in the beginning and 161.9 MB in the end (delta: -61.5 MB). Peak memory consumption was 23.9 MB. Max. memory is 7.1 GB. [2019-10-13 19:53:16,122 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 142.6 MB. Free memory was 119.0 MB in the beginning and 118.8 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2019-10-13 19:53:16,123 INFO L168 Benchmark]: CACSL2BoogieTranslator took 423.05 ms. Allocated memory was 142.6 MB in the beginning and 199.8 MB in the end (delta: 57.1 MB). Free memory was 100.1 MB in the beginning and 178.1 MB in the end (delta: -78.0 MB). Peak memory consumption was 19.7 MB. Max. memory is 7.1 GB. [2019-10-13 19:53:16,124 INFO L168 Benchmark]: Boogie Preprocessor took 45.70 ms. Allocated memory is still 199.8 MB. Free memory was 178.1 MB in the beginning and 175.7 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 7.1 GB. [2019-10-13 19:53:16,125 INFO L168 Benchmark]: RCFGBuilder took 499.01 ms. Allocated memory is still 199.8 MB. Free memory was 175.7 MB in the beginning and 151.0 MB in the end (delta: 24.7 MB). Peak memory consumption was 24.7 MB. Max. memory is 7.1 GB. [2019-10-13 19:53:16,126 INFO L168 Benchmark]: TraceAbstraction took 1740.99 ms. Allocated memory was 199.8 MB in the beginning and 228.1 MB in the end (delta: 28.3 MB). Free memory was 151.0 MB in the beginning and 161.9 MB in the end (delta: -10.9 MB). Peak memory consumption was 17.4 MB. Max. memory is 7.1 GB. [2019-10-13 19:53:16,133 INFO L335 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 142.6 MB. Free memory was 119.0 MB in the beginning and 118.8 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 423.05 ms. Allocated memory was 142.6 MB in the beginning and 199.8 MB in the end (delta: 57.1 MB). Free memory was 100.1 MB in the beginning and 178.1 MB in the end (delta: -78.0 MB). Peak memory consumption was 19.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 45.70 ms. Allocated memory is still 199.8 MB. Free memory was 178.1 MB in the beginning and 175.7 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 499.01 ms. Allocated memory is still 199.8 MB. Free memory was 175.7 MB in the beginning and 151.0 MB in the end (delta: 24.7 MB). Peak memory consumption was 24.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1740.99 ms. Allocated memory was 199.8 MB in the beginning and 228.1 MB in the end (delta: 28.3 MB). Free memory was 151.0 MB in the beginning and 161.9 MB in the end (delta: -10.9 MB). Peak memory consumption was 17.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 2]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 30]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 42]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 27]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 33]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 49]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 39]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 45]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 51 locations, 1 error locations. Result: SAFE, OverallTime: 1.6s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 158 SDtfs, 10 SDslu, 72 SDs, 0 SdLazy, 50 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 58 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=56occurred in iteration=3, 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, 4 MinimizatonAttempts, 10 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 17 LocationsWithAnnotation, 20 PreInvPairs, 20 NumberOfFragments, 17 HoareAnnotationTreeSize, 20 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 17 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 197 NumberOfCodeBlocks, 197 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 242 ConstructedInterpolants, 0 QuantifiedInterpolants, 11348 SizeOfPredicates, 1 NumberOfNonLiveVariables, 179 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 6 InterpolantComputations, 3 PerfectInterpolantSequences, 28/31 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: TIME[ms]: 128, ITERATIONS: 1, WAS_STRONG: 1, WEAKENING_RATIO: 0.895, AVG_VARS_REMOVED_DURING_WEAKENING: 1.12, AVG_WEAKENED_CONJUNCTS: 0.12, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...