/usr/bin/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_copy8_ground-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-06 22:26:37,412 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-06 22:26:37,415 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-06 22:26:37,433 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-06 22:26:37,433 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-06 22:26:37,436 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-06 22:26:37,438 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-06 22:26:37,448 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-06 22:26:37,452 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-06 22:26:37,456 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-06 22:26:37,457 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-06 22:26:37,459 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-06 22:26:37,460 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-06 22:26:37,461 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-06 22:26:37,463 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-06 22:26:37,465 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-06 22:26:37,467 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-06 22:26:37,468 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-06 22:26:37,470 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-06 22:26:37,475 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-06 22:26:37,479 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-06 22:26:37,482 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-06 22:26:37,485 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-06 22:26:37,485 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-06 22:26:37,488 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-06 22:26:37,499 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-06 22:26:37,499 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-06 22:26:37,500 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-06 22:26:37,501 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 [2019-11-06 22:26:37,529 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-06 22:26:37,530 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-06 22:26:37,531 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-06 22:26:37,531 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-06 22:26:37,531 INFO L138 SettingsManager]: * Use SBE=true [2019-11-06 22:26:37,531 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-06 22:26:37,532 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-06 22:26:37,533 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-06 22:26:37,533 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-06 22:26:37,533 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-06 22:26:37,534 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-06 22:26:37,534 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-06 22:26:37,534 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-06 22:26:37,534 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-06 22:26:37,534 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-06 22:26:37,535 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-06 22:26:37,535 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-06 22:26:37,535 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-06 22:26:37,535 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-06 22:26:37,535 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-06 22:26:37,536 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-06 22:26:37,536 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 22:26:37,536 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-06 22:26:37,536 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-06 22:26:37,536 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-06 22:26:37,537 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-06 22:26:37,537 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-06 22:26:37,537 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-06 22:26:37,537 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 [2019-11-06 22:26:37,834 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-06 22:26:37,857 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-06 22:26:37,861 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-06 22:26:37,862 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-06 22:26:37,863 INFO L275 PluginConnector]: CDTParser initialized [2019-11-06 22:26:37,863 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_copy8_ground-2.i [2019-11-06 22:26:37,938 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ebceed449/11d12f6333ff42ddad7484d06118db08/FLAGf11623d11 [2019-11-06 22:26:38,422 INFO L306 CDTParser]: Found 1 translation units. [2019-11-06 22:26:38,423 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_copy8_ground-2.i [2019-11-06 22:26:38,432 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ebceed449/11d12f6333ff42ddad7484d06118db08/FLAGf11623d11 [2019-11-06 22:26:38,770 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ebceed449/11d12f6333ff42ddad7484d06118db08 [2019-11-06 22:26:38,779 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-06 22:26:38,780 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-06 22:26:38,781 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-06 22:26:38,781 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-06 22:26:38,788 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-06 22:26:38,789 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:26:38" (1/1) ... [2019-11-06 22:26:38,791 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d051243 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:38, skipping insertion in model container [2019-11-06 22:26:38,791 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:26:38" (1/1) ... [2019-11-06 22:26:38,800 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-06 22:26:38,821 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-06 22:26:39,032 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 22:26:39,035 INFO L188 MainTranslator]: Completed pre-run [2019-11-06 22:26:39,063 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 22:26:39,159 INFO L192 MainTranslator]: Completed translation [2019-11-06 22:26:39,159 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:39 WrapperNode [2019-11-06 22:26:39,160 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-06 22:26:39,160 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-06 22:26:39,161 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-06 22:26:39,161 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-06 22:26:39,171 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:39" (1/1) ... [2019-11-06 22:26:39,171 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:39" (1/1) ... [2019-11-06 22:26:39,180 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:39" (1/1) ... [2019-11-06 22:26:39,180 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:39" (1/1) ... [2019-11-06 22:26:39,192 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:39" (1/1) ... [2019-11-06 22:26:39,200 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:39" (1/1) ... [2019-11-06 22:26:39,202 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:39" (1/1) ... [2019-11-06 22:26:39,205 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-06 22:26:39,206 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-06 22:26:39,206 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-06 22:26:39,206 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-06 22:26:39,207 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:39" (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 [2019-11-06 22:26:39,268 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-06 22:26:39,268 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-06 22:26:39,268 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-11-06 22:26:39,269 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-06 22:26:39,269 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-06 22:26:39,269 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-11-06 22:26:39,269 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-06 22:26:39,269 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-06 22:26:39,269 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-06 22:26:39,270 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-06 22:26:39,270 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-06 22:26:39,270 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-06 22:26:39,270 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-06 22:26:39,270 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-06 22:26:39,701 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-06 22:26:39,702 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-11-06 22:26:39,703 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:26:39 BoogieIcfgContainer [2019-11-06 22:26:39,703 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-06 22:26:39,704 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-06 22:26:39,704 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-06 22:26:39,707 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-06 22:26:39,708 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:26:38" (1/3) ... [2019-11-06 22:26:39,708 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3205d3d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:26:39, skipping insertion in model container [2019-11-06 22:26:39,709 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:39" (2/3) ... [2019-11-06 22:26:39,709 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3205d3d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:26:39, skipping insertion in model container [2019-11-06 22:26:39,709 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:26:39" (3/3) ... [2019-11-06 22:26:39,711 INFO L109 eAbstractionObserver]: Analyzing ICFG standard_copy8_ground-2.i [2019-11-06 22:26:39,721 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-06 22:26:39,731 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-06 22:26:39,744 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-06 22:26:39,770 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-06 22:26:39,770 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-06 22:26:39,770 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-06 22:26:39,770 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-06 22:26:39,770 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-06 22:26:39,771 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-06 22:26:39,771 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-06 22:26:39,771 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-06 22:26:39,790 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states. [2019-11-06 22:26:39,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2019-11-06 22:26:39,797 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:26:39,797 INFO L410 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] [2019-11-06 22:26:39,799 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:26:39,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:26:39,804 INFO L82 PathProgramCache]: Analyzing trace with hash 661673386, now seen corresponding path program 1 times [2019-11-06 22:26:39,813 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:26:39,814 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328218024] [2019-11-06 22:26:39,814 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:26:39,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:26:39,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:26:39,989 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328218024] [2019-11-06 22:26:39,991 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:26:39,991 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-06 22:26:39,992 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216283559] [2019-11-06 22:26:39,999 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-06 22:26:40,000 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:26:40,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-06 22:26:40,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-06 22:26:40,019 INFO L87 Difference]: Start difference. First operand 48 states. Second operand 2 states. [2019-11-06 22:26:40,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:26:40,067 INFO L93 Difference]: Finished difference Result 88 states and 127 transitions. [2019-11-06 22:26:40,068 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-06 22:26:40,069 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 29 [2019-11-06 22:26:40,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:26:40,081 INFO L225 Difference]: With dead ends: 88 [2019-11-06 22:26:40,081 INFO L226 Difference]: Without dead ends: 43 [2019-11-06 22:26:40,088 INFO L630 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 [2019-11-06 22:26:40,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2019-11-06 22:26:40,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2019-11-06 22:26:40,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2019-11-06 22:26:40,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 52 transitions. [2019-11-06 22:26:40,156 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 52 transitions. Word has length 29 [2019-11-06 22:26:40,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:26:40,157 INFO L462 AbstractCegarLoop]: Abstraction has 43 states and 52 transitions. [2019-11-06 22:26:40,158 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-06 22:26:40,158 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 52 transitions. [2019-11-06 22:26:40,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2019-11-06 22:26:40,162 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:26:40,162 INFO L410 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] [2019-11-06 22:26:40,163 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:26:40,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:26:40,164 INFO L82 PathProgramCache]: Analyzing trace with hash 904564754, now seen corresponding path program 1 times [2019-11-06 22:26:40,165 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:26:40,165 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79738676] [2019-11-06 22:26:40,166 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:26:40,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:26:40,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:26:40,311 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79738676] [2019-11-06 22:26:40,311 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:26:40,312 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-06 22:26:40,312 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554164171] [2019-11-06 22:26:40,315 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-06 22:26:40,315 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:26:40,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-06 22:26:40,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-06 22:26:40,318 INFO L87 Difference]: Start difference. First operand 43 states and 52 transitions. Second operand 3 states. [2019-11-06 22:26:40,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:26:40,361 INFO L93 Difference]: Finished difference Result 80 states and 98 transitions. [2019-11-06 22:26:40,361 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-06 22:26:40,362 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 29 [2019-11-06 22:26:40,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:26:40,363 INFO L225 Difference]: With dead ends: 80 [2019-11-06 22:26:40,363 INFO L226 Difference]: Without dead ends: 45 [2019-11-06 22:26:40,364 INFO L630 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 [2019-11-06 22:26:40,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2019-11-06 22:26:40,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 44. [2019-11-06 22:26:40,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2019-11-06 22:26:40,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2019-11-06 22:26:40,375 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 29 [2019-11-06 22:26:40,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:26:40,376 INFO L462 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2019-11-06 22:26:40,376 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-06 22:26:40,376 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2019-11-06 22:26:40,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-11-06 22:26:40,377 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:26:40,379 INFO L410 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] [2019-11-06 22:26:40,379 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:26:40,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:26:40,380 INFO L82 PathProgramCache]: Analyzing trace with hash 1833019696, now seen corresponding path program 1 times [2019-11-06 22:26:40,380 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:26:40,381 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079309697] [2019-11-06 22:26:40,381 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:26:40,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:26:40,450 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-06 22:26:40,452 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079309697] [2019-11-06 22:26:40,452 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:26:40,453 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-06 22:26:40,453 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152771369] [2019-11-06 22:26:40,454 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-06 22:26:40,454 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:26:40,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-06 22:26:40,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-06 22:26:40,455 INFO L87 Difference]: Start difference. First operand 44 states and 53 transitions. Second operand 3 states. [2019-11-06 22:26:40,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:26:40,598 INFO L93 Difference]: Finished difference Result 92 states and 116 transitions. [2019-11-06 22:26:40,599 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-06 22:26:40,599 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 31 [2019-11-06 22:26:40,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:26:40,600 INFO L225 Difference]: With dead ends: 92 [2019-11-06 22:26:40,601 INFO L226 Difference]: Without dead ends: 60 [2019-11-06 22:26:40,601 INFO L630 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 [2019-11-06 22:26:40,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2019-11-06 22:26:40,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 52. [2019-11-06 22:26:40,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2019-11-06 22:26:40,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 61 transitions. [2019-11-06 22:26:40,610 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 61 transitions. Word has length 31 [2019-11-06 22:26:40,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:26:40,610 INFO L462 AbstractCegarLoop]: Abstraction has 52 states and 61 transitions. [2019-11-06 22:26:40,611 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-06 22:26:40,611 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 61 transitions. [2019-11-06 22:26:40,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2019-11-06 22:26:40,612 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:26:40,613 INFO L410 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] [2019-11-06 22:26:40,613 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:26:40,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:26:40,613 INFO L82 PathProgramCache]: Analyzing trace with hash 1518385952, now seen corresponding path program 1 times [2019-11-06 22:26:40,614 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:26:40,614 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698133757] [2019-11-06 22:26:40,614 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:26:40,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:26:40,774 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-11-06 22:26:40,775 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698133757] [2019-11-06 22:26:40,775 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1430137161] [2019-11-06 22:26:40,775 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 [2019-11-06 22:26:40,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:26:40,891 INFO L256 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-06 22:26:40,901 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 22:26:40,964 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-11-06 22:26:40,964 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-06 22:26:41,007 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-11-06 22:26:41,007 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [1467808708] [2019-11-06 22:26:41,014 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 48 [2019-11-06 22:26:41,083 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-11-06 22:26:41,083 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-11-06 22:26:41,141 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-11-06 22:26:41,142 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 54 variables. [2019-11-06 22:26:41,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:26:41,148 INFO L536 sIntCurrentIteration]: Generating AbsInt predicates [2019-11-06 22:26:41,197 INFO L227 lantSequenceWeakener]: Weakened 4 states. On average, predicates are now at 100% of their original sizes. [2019-11-06 22:26:41,197 INFO L551 sIntCurrentIteration]: Unifying AI predicates [2019-11-06 22:26:41,200 INFO L553 sIntCurrentIteration]: We unified 46 AI predicates to 46 [2019-11-06 22:26:41,200 INFO L562 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-11-06 22:26:41,201 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2019-11-06 22:26:41,201 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4, 4, 4] total 8 [2019-11-06 22:26:41,201 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962151465] [2019-11-06 22:26:41,202 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-06 22:26:41,202 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:26:41,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 22:26:41,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2019-11-06 22:26:41,203 INFO L87 Difference]: Start difference. First operand 52 states and 61 transitions. Second operand 2 states. [2019-11-06 22:26:41,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:26:41,206 INFO L93 Difference]: Finished difference Result 52 states and 61 transitions. [2019-11-06 22:26:41,206 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-06 22:26:41,206 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 47 [2019-11-06 22:26:41,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:26:41,209 INFO L225 Difference]: With dead ends: 52 [2019-11-06 22:26:41,210 INFO L226 Difference]: Without dead ends: 0 [2019-11-06 22:26:41,211 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2019-11-06 22:26:41,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-06 22:26:41,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-06 22:26:41,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-06 22:26:41,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-06 22:26:41,212 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 47 [2019-11-06 22:26:41,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:26:41,212 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-06 22:26:41,212 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-06 22:26:41,212 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-06 22:26:41,212 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-06 22:26:41,414 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 22:26:41,418 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-06 22:26:41,453 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2019-11-06 22:26:41,453 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2019-11-06 22:26:41,454 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-11-06 22:26:41,454 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-06 22:26:41,454 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-11-06 22:26:41,454 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-11-06 22:26:41,454 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-06 22:26:41,454 INFO L443 ceAbstractionStarter]: For program point L35-2(lines 35 37) no Hoare annotation was computed. [2019-11-06 22:26:41,454 INFO L439 ceAbstractionStarter]: At program point L35-3(lines 35 37) the Hoare annotation is: false [2019-11-06 22:26:41,454 INFO L443 ceAbstractionStarter]: For program point L35-4(lines 35 37) no Hoare annotation was computed. [2019-11-06 22:26:41,455 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 4 49) no Hoare annotation was computed. [2019-11-06 22:26:41,455 INFO L443 ceAbstractionStarter]: For program point L20-2(lines 20 22) no Hoare annotation was computed. [2019-11-06 22:26:41,455 INFO L439 ceAbstractionStarter]: At program point L20-3(lines 20 22) the Hoare annotation is: false [2019-11-06 22:26:41,455 INFO L443 ceAbstractionStarter]: For program point L20-4(lines 20 22) no Hoare annotation was computed. [2019-11-06 22:26:41,455 INFO L443 ceAbstractionStarter]: For program point L45-2(lines 45 47) no Hoare annotation was computed. [2019-11-06 22:26:41,455 INFO L439 ceAbstractionStarter]: At program point L45-3(lines 45 47) the Hoare annotation is: false [2019-11-06 22:26:41,455 INFO L443 ceAbstractionStarter]: For program point L45-4(lines 45 47) no Hoare annotation was computed. [2019-11-06 22:26:41,456 INFO L443 ceAbstractionStarter]: For program point L29-2(lines 29 31) no Hoare annotation was computed. [2019-11-06 22:26:41,456 INFO L439 ceAbstractionStarter]: At program point L29-3(lines 29 31) the Hoare annotation is: false [2019-11-06 22:26:41,456 INFO L443 ceAbstractionStarter]: For program point L29-4(lines 29 31) no Hoare annotation was computed. [2019-11-06 22:26:41,456 INFO L439 ceAbstractionStarter]: At program point L46(line 46) the Hoare annotation is: false [2019-11-06 22:26:41,456 INFO L443 ceAbstractionStarter]: For program point L46-1(line 46) no Hoare annotation was computed. [2019-11-06 22:26:41,456 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 4 49) no Hoare annotation was computed. [2019-11-06 22:26:41,456 INFO L443 ceAbstractionStarter]: For program point L38-2(lines 38 40) no Hoare annotation was computed. [2019-11-06 22:26:41,456 INFO L439 ceAbstractionStarter]: At program point L38-3(lines 38 40) the Hoare annotation is: false [2019-11-06 22:26:41,456 INFO L443 ceAbstractionStarter]: For program point L38-4(lines 38 40) no Hoare annotation was computed. [2019-11-06 22:26:41,456 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 4 49) the Hoare annotation is: true [2019-11-06 22:26:41,457 INFO L443 ceAbstractionStarter]: For program point L23-2(lines 23 25) no Hoare annotation was computed. [2019-11-06 22:26:41,457 INFO L439 ceAbstractionStarter]: At program point L23-3(lines 23 25) the Hoare annotation is: false [2019-11-06 22:26:41,457 INFO L443 ceAbstractionStarter]: For program point L23-4(lines 23 25) no Hoare annotation was computed. [2019-11-06 22:26:41,457 INFO L443 ceAbstractionStarter]: For program point L15-2(lines 15 18) no Hoare annotation was computed. [2019-11-06 22:26:41,457 INFO L439 ceAbstractionStarter]: At program point L15-3(lines 15 18) the Hoare annotation is: false [2019-11-06 22:26:41,457 INFO L443 ceAbstractionStarter]: For program point L15-4(lines 15 18) no Hoare annotation was computed. [2019-11-06 22:26:41,457 INFO L443 ceAbstractionStarter]: For program point L32-2(lines 32 34) no Hoare annotation was computed. [2019-11-06 22:26:41,457 INFO L439 ceAbstractionStarter]: At program point L32-3(lines 32 34) the Hoare annotation is: false [2019-11-06 22:26:41,457 INFO L443 ceAbstractionStarter]: For program point L32-4(lines 32 34) no Hoare annotation was computed. [2019-11-06 22:26:41,457 INFO L443 ceAbstractionStarter]: For program point L41-2(lines 41 43) no Hoare annotation was computed. [2019-11-06 22:26:41,458 INFO L439 ceAbstractionStarter]: At program point L41-3(lines 41 43) the Hoare annotation is: false [2019-11-06 22:26:41,458 INFO L443 ceAbstractionStarter]: For program point L41-4(lines 41 43) no Hoare annotation was computed. [2019-11-06 22:26:41,458 INFO L443 ceAbstractionStarter]: For program point L26-2(lines 26 28) no Hoare annotation was computed. [2019-11-06 22:26:41,458 INFO L439 ceAbstractionStarter]: At program point L26-3(lines 26 28) the Hoare annotation is: false [2019-11-06 22:26:41,458 INFO L443 ceAbstractionStarter]: For program point L26-4(lines 26 28) no Hoare annotation was computed. [2019-11-06 22:26:41,458 INFO L443 ceAbstractionStarter]: For program point L2-1(line 2) no Hoare annotation was computed. [2019-11-06 22:26:41,458 INFO L443 ceAbstractionStarter]: For program point L2-3(line 2) no Hoare annotation was computed. [2019-11-06 22:26:41,459 INFO L446 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(line 2) the Hoare annotation is: true [2019-11-06 22:26:41,459 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 2) no Hoare annotation was computed. [2019-11-06 22:26:41,459 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(line 2) no Hoare annotation was computed. [2019-11-06 22:26:41,459 INFO L443 ceAbstractionStarter]: For program point L2(line 2) no Hoare annotation was computed. [2019-11-06 22:26:41,472 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 10:26:41 BoogieIcfgContainer [2019-11-06 22:26:41,473 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-06 22:26:41,478 INFO L168 Benchmark]: Toolchain (without parser) took 2694.38 ms. Allocated memory was 138.9 MB in the beginning and 237.0 MB in the end (delta: 98.0 MB). Free memory was 103.7 MB in the beginning and 172.4 MB in the end (delta: -68.7 MB). Peak memory consumption was 29.3 MB. Max. memory is 7.1 GB. [2019-11-06 22:26:41,480 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 138.9 MB. Free memory was 122.1 MB in the beginning and 121.9 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2019-11-06 22:26:41,487 INFO L168 Benchmark]: CACSL2BoogieTranslator took 379.02 ms. Allocated memory was 138.9 MB in the beginning and 203.4 MB in the end (delta: 64.5 MB). Free memory was 103.2 MB in the beginning and 182.7 MB in the end (delta: -79.4 MB). Peak memory consumption was 23.9 MB. Max. memory is 7.1 GB. [2019-11-06 22:26:41,489 INFO L168 Benchmark]: Boogie Preprocessor took 45.01 ms. Allocated memory is still 203.4 MB. Free memory was 182.7 MB in the beginning and 179.7 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 7.1 GB. [2019-11-06 22:26:41,491 INFO L168 Benchmark]: RCFGBuilder took 497.46 ms. Allocated memory is still 203.4 MB. Free memory was 179.7 MB in the beginning and 157.0 MB in the end (delta: 22.7 MB). Peak memory consumption was 22.7 MB. Max. memory is 7.1 GB. [2019-11-06 22:26:41,492 INFO L168 Benchmark]: TraceAbstraction took 1768.65 ms. Allocated memory was 203.4 MB in the beginning and 237.0 MB in the end (delta: 33.6 MB). Free memory was 156.3 MB in the beginning and 172.4 MB in the end (delta: -16.0 MB). Peak memory consumption was 17.5 MB. Max. memory is 7.1 GB. [2019-11-06 22:26:41,502 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 138.9 MB. Free memory was 122.1 MB in the beginning and 121.9 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 379.02 ms. Allocated memory was 138.9 MB in the beginning and 203.4 MB in the end (delta: 64.5 MB). Free memory was 103.2 MB in the beginning and 182.7 MB in the end (delta: -79.4 MB). Peak memory consumption was 23.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 45.01 ms. Allocated memory is still 203.4 MB. Free memory was 182.7 MB in the beginning and 179.7 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 497.46 ms. Allocated memory is still 203.4 MB. Free memory was 179.7 MB in the beginning and 157.0 MB in the end (delta: 22.7 MB). Peak memory consumption was 22.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1768.65 ms. Allocated memory was 203.4 MB in the beginning and 237.0 MB in the end (delta: 33.6 MB). Free memory was 156.3 MB in the beginning and 172.4 MB in the end (delta: -16.0 MB). Peak memory consumption was 17.5 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: 41]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 26]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 32]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 38]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 29]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 45]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 48 locations, 1 error locations. Result: SAFE, OverallTime: 1.6s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 148 SDtfs, 9 SDslu, 68 SDs, 0 SdLazy, 45 SolverSat, 14 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 105 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=52occurred 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, 9 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 16 LocationsWithAnnotation, 19 PreInvPairs, 19 NumberOfFragments, 16 HoareAnnotationTreeSize, 19 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 16 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 183 NumberOfCodeBlocks, 183 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 224 ConstructedInterpolants, 0 QuantifiedInterpolants, 9760 SizeOfPredicates, 1 NumberOfNonLiveVariables, 166 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 6 InterpolantComputations, 3 PerfectInterpolantSequences, 25/28 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: TIME[ms]: 135, ITERATIONS: 1, WAS_STRONG: 1, WEAKENING_RATIO: 0.8967391304347826, AVG_VARS_REMOVED_DURING_WEAKENING: 1.108695652173913, AVG_WEAKENED_CONJUNCTS: 0.13043478260869565, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...