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_copy2_ground-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-14 23:52:02,680 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-14 23:52:02,683 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-14 23:52:02,698 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-14 23:52:02,698 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-14 23:52:02,699 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-14 23:52:02,701 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-14 23:52:02,703 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-14 23:52:02,706 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-14 23:52:02,707 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-14 23:52:02,711 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-14 23:52:02,712 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-14 23:52:02,713 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-14 23:52:02,714 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-14 23:52:02,715 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-14 23:52:02,716 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-14 23:52:02,716 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-14 23:52:02,717 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-14 23:52:02,719 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-14 23:52:02,723 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-14 23:52:02,724 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-14 23:52:02,725 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-14 23:52:02,726 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-14 23:52:02,727 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-14 23:52:02,731 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-14 23:52:02,742 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-14 23:52:02,744 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-14 23:52:02,744 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-14 23:52:02,746 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 [2019-10-14 23:52:02,767 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-14 23:52:02,767 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-14 23:52:02,770 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-14 23:52:02,770 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-14 23:52:02,770 INFO L138 SettingsManager]: * Use SBE=true [2019-10-14 23:52:02,770 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-14 23:52:02,770 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-14 23:52:02,771 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-14 23:52:02,771 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-14 23:52:02,771 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-14 23:52:02,772 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-14 23:52:02,772 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-14 23:52:02,772 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-14 23:52:02,773 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-14 23:52:02,773 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-14 23:52:02,773 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-14 23:52:02,773 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-14 23:52:02,774 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-14 23:52:02,774 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-14 23:52:02,774 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-14 23:52:02,774 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-14 23:52:02,775 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 23:52:02,775 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-14 23:52:02,775 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-14 23:52:02,775 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-14 23:52:02,775 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-14 23:52:02,776 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-14 23:52:02,776 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-14 23:52:02,776 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 [2019-10-14 23:52:03,080 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-14 23:52:03,094 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-14 23:52:03,097 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-14 23:52:03,099 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-14 23:52:03,099 INFO L275 PluginConnector]: CDTParser initialized [2019-10-14 23:52:03,100 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_copy2_ground-1.i [2019-10-14 23:52:03,179 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/664164fb1/64a5e5c895d248c9a95bf1cab705b931/FLAG4e80652dd [2019-10-14 23:52:03,662 INFO L306 CDTParser]: Found 1 translation units. [2019-10-14 23:52:03,663 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_copy2_ground-1.i [2019-10-14 23:52:03,668 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/664164fb1/64a5e5c895d248c9a95bf1cab705b931/FLAG4e80652dd [2019-10-14 23:52:04,049 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/664164fb1/64a5e5c895d248c9a95bf1cab705b931 [2019-10-14 23:52:04,058 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-14 23:52:04,060 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-14 23:52:04,061 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-14 23:52:04,063 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-14 23:52:04,066 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-14 23:52:04,067 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:52:04" (1/1) ... [2019-10-14 23:52:04,071 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78605420 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:52:04, skipping insertion in model container [2019-10-14 23:52:04,071 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:52:04" (1/1) ... [2019-10-14 23:52:04,078 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-14 23:52:04,096 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-14 23:52:04,298 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:52:04,309 INFO L188 MainTranslator]: Completed pre-run [2019-10-14 23:52:04,330 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:52:04,350 INFO L192 MainTranslator]: Completed translation [2019-10-14 23:52:04,350 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:52:04 WrapperNode [2019-10-14 23:52:04,351 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-14 23:52:04,351 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-14 23:52:04,352 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-14 23:52:04,352 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-14 23:52:04,454 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:52:04" (1/1) ... [2019-10-14 23:52:04,454 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:52:04" (1/1) ... [2019-10-14 23:52:04,462 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:52:04" (1/1) ... [2019-10-14 23:52:04,463 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:52:04" (1/1) ... [2019-10-14 23:52:04,478 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:52:04" (1/1) ... [2019-10-14 23:52:04,483 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:52:04" (1/1) ... [2019-10-14 23:52:04,484 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:52:04" (1/1) ... [2019-10-14 23:52:04,486 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-14 23:52:04,487 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-14 23:52:04,487 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-14 23:52:04,487 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-14 23:52:04,488 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:52:04" (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 [2019-10-14 23:52:04,540 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-14 23:52:04,540 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-14 23:52:04,540 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-14 23:52:04,540 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-14 23:52:04,541 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-14 23:52:04,541 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-14 23:52:04,541 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-14 23:52:04,541 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-14 23:52:04,541 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-14 23:52:04,542 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-14 23:52:04,542 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-14 23:52:04,542 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-14 23:52:04,542 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-14 23:52:04,542 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-14 23:52:04,828 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-14 23:52:04,829 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-14 23:52:04,830 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:52:04 BoogieIcfgContainer [2019-10-14 23:52:04,830 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-14 23:52:04,832 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-14 23:52:04,832 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-14 23:52:04,835 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-14 23:52:04,835 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:52:04" (1/3) ... [2019-10-14 23:52:04,836 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31deee45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:52:04, skipping insertion in model container [2019-10-14 23:52:04,836 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:52:04" (2/3) ... [2019-10-14 23:52:04,837 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31deee45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:52:04, skipping insertion in model container [2019-10-14 23:52:04,837 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:52:04" (3/3) ... [2019-10-14 23:52:04,839 INFO L109 eAbstractionObserver]: Analyzing ICFG standard_copy2_ground-1.i [2019-10-14 23:52:04,851 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-14 23:52:04,859 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-14 23:52:04,869 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-14 23:52:04,893 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-14 23:52:04,894 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-14 23:52:04,894 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-14 23:52:04,894 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-14 23:52:04,894 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-14 23:52:04,894 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-14 23:52:04,894 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-14 23:52:04,895 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-14 23:52:04,916 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2019-10-14 23:52:04,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-10-14 23:52:04,921 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:52:04,922 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:52:04,924 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:52:04,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:52:04,930 INFO L82 PathProgramCache]: Analyzing trace with hash 415311520, now seen corresponding path program 1 times [2019-10-14 23:52:04,937 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-14 23:52:04,937 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384114533] [2019-10-14 23:52:04,938 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:52:04,938 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:52:04,938 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:52:05,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:52:05,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:52:05,075 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384114533] [2019-10-14 23:52:05,076 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:52:05,076 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-14 23:52:05,076 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338922004] [2019-10-14 23:52:05,080 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-14 23:52:05,082 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-14 23:52:05,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-14 23:52:05,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-14 23:52:05,098 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 2 states. [2019-10-14 23:52:05,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:52:05,125 INFO L93 Difference]: Finished difference Result 52 states and 67 transitions. [2019-10-14 23:52:05,125 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-14 23:52:05,126 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 17 [2019-10-14 23:52:05,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:52:05,134 INFO L225 Difference]: With dead ends: 52 [2019-10-14 23:52:05,134 INFO L226 Difference]: Without dead ends: 25 [2019-10-14 23:52:05,137 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 [2019-10-14 23:52:05,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2019-10-14 23:52:05,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2019-10-14 23:52:05,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2019-10-14 23:52:05,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2019-10-14 23:52:05,174 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 17 [2019-10-14 23:52:05,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:52:05,174 INFO L462 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2019-10-14 23:52:05,174 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-14 23:52:05,175 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2019-10-14 23:52:05,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-10-14 23:52:05,176 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:52:05,176 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:52:05,177 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:52:05,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:52:05,177 INFO L82 PathProgramCache]: Analyzing trace with hash -1687882214, now seen corresponding path program 1 times [2019-10-14 23:52:05,178 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-14 23:52:05,178 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369085497] [2019-10-14 23:52:05,178 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:52:05,179 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:52:05,179 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:52:05,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:52:05,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:52:05,245 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369085497] [2019-10-14 23:52:05,245 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:52:05,245 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-14 23:52:05,246 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808354655] [2019-10-14 23:52:05,247 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-14 23:52:05,248 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-14 23:52:05,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-14 23:52:05,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-14 23:52:05,249 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand 3 states. [2019-10-14 23:52:05,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:52:05,271 INFO L93 Difference]: Finished difference Result 44 states and 50 transitions. [2019-10-14 23:52:05,272 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-14 23:52:05,272 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2019-10-14 23:52:05,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:52:05,273 INFO L225 Difference]: With dead ends: 44 [2019-10-14 23:52:05,273 INFO L226 Difference]: Without dead ends: 27 [2019-10-14 23:52:05,275 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 [2019-10-14 23:52:05,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2019-10-14 23:52:05,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 26. [2019-10-14 23:52:05,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-10-14 23:52:05,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2019-10-14 23:52:05,282 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 17 [2019-10-14 23:52:05,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:52:05,283 INFO L462 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2019-10-14 23:52:05,283 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-14 23:52:05,283 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2019-10-14 23:52:05,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-10-14 23:52:05,284 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:52:05,284 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:52:05,285 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:52:05,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:52:05,285 INFO L82 PathProgramCache]: Analyzing trace with hash 1114616120, now seen corresponding path program 1 times [2019-10-14 23:52:05,285 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-14 23:52:05,286 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709619523] [2019-10-14 23:52:05,286 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:52:05,286 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:52:05,286 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:52:05,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:52:05,376 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-14 23:52:05,377 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709619523] [2019-10-14 23:52:05,377 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:52:05,378 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-14 23:52:05,378 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090321336] [2019-10-14 23:52:05,379 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-14 23:52:05,379 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-14 23:52:05,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-14 23:52:05,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-14 23:52:05,380 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand 3 states. [2019-10-14 23:52:05,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:52:05,422 INFO L93 Difference]: Finished difference Result 44 states and 50 transitions. [2019-10-14 23:52:05,422 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-14 23:52:05,423 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2019-10-14 23:52:05,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:52:05,424 INFO L225 Difference]: With dead ends: 44 [2019-10-14 23:52:05,425 INFO L226 Difference]: Without dead ends: 30 [2019-10-14 23:52:05,426 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 [2019-10-14 23:52:05,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2019-10-14 23:52:05,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2019-10-14 23:52:05,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-10-14 23:52:05,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2019-10-14 23:52:05,434 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 19 [2019-10-14 23:52:05,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:52:05,435 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2019-10-14 23:52:05,435 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-14 23:52:05,435 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2019-10-14 23:52:05,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-10-14 23:52:05,436 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:52:05,437 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] [2019-10-14 23:52:05,437 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:52:05,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:52:05,437 INFO L82 PathProgramCache]: Analyzing trace with hash -825329612, now seen corresponding path program 1 times [2019-10-14 23:52:05,438 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-14 23:52:05,438 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944092209] [2019-10-14 23:52:05,438 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:52:05,439 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:52:05,439 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:52:05,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:52:05,523 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-14 23:52:05,524 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944092209] [2019-10-14 23:52:05,524 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [937591775] [2019-10-14 23:52:05,525 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 [2019-10-14 23:52:05,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:52:05,622 INFO L256 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-14 23:52:05,629 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:52:05,663 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-14 23:52:05,664 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-14 23:52:05,699 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-14 23:52:05,700 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [1916160037] [2019-10-14 23:52:05,706 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 24 [2019-10-14 23:52:05,747 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-14 23:52:05,748 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-14 23:52:05,819 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-10-14 23:52:05,821 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 30 variables. [2019-10-14 23:52:05,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:52:05,825 INFO L536 sIntCurrentIteration]: Generating AbsInt predicates [2019-10-14 23:52:05,862 INFO L227 lantSequenceWeakener]: Weakened 4 states. On average, predicates are now at 100% of their original sizes. [2019-10-14 23:52:05,863 INFO L551 sIntCurrentIteration]: Unifying AI predicates [2019-10-14 23:52:05,865 INFO L553 sIntCurrentIteration]: We unified 22 AI predicates to 22 [2019-10-14 23:52:05,865 INFO L562 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-10-14 23:52:05,866 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2019-10-14 23:52:05,866 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4, 4, 4] total 7 [2019-10-14 23:52:05,867 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150425222] [2019-10-14 23:52:05,867 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-14 23:52:05,868 INFO L137 tionRefinementEngine]: Using predicate unifier AbsIntPredicateUnifier provided by strategy TAIPAN [2019-10-14 23:52:05,868 INFO L124 tionRefinementEngine]: Using hoare triple checker CachingHoareTripleCheckerMap provided by strategy [2019-10-14 23:52:05,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-14 23:52:05,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-14 23:52:05,869 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand 2 states. [2019-10-14 23:52:05,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:52:05,872 INFO L93 Difference]: Finished difference Result 28 states and 31 transitions. [2019-10-14 23:52:05,872 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-14 23:52:05,872 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 23 [2019-10-14 23:52:05,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:52:05,873 INFO L225 Difference]: With dead ends: 28 [2019-10-14 23:52:05,873 INFO L226 Difference]: Without dead ends: 0 [2019-10-14 23:52:05,874 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-14 23:52:05,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-14 23:52:05,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-14 23:52:05,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-14 23:52:05,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-14 23:52:05,875 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 23 [2019-10-14 23:52:05,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:52:05,875 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-14 23:52:05,875 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-14 23:52:05,876 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-14 23:52:05,876 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-14 23:52:06,079 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:52:06,086 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-14 23:52:06,127 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2019-10-14 23:52:06,127 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2019-10-14 23:52:06,127 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-10-14 23:52:06,128 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-14 23:52:06,128 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-10-14 23:52:06,128 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-10-14 23:52:06,128 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-14 23:52:06,128 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 4 25) no Hoare annotation was computed. [2019-10-14 23:52:06,129 INFO L443 ceAbstractionStarter]: For program point L21-2(lines 21 23) no Hoare annotation was computed. [2019-10-14 23:52:06,129 INFO L439 ceAbstractionStarter]: At program point L21-3(lines 21 23) the Hoare annotation is: false [2019-10-14 23:52:06,129 INFO L443 ceAbstractionStarter]: For program point L21-4(lines 21 23) no Hoare annotation was computed. [2019-10-14 23:52:06,130 INFO L443 ceAbstractionStarter]: For program point L17-2(lines 17 19) no Hoare annotation was computed. [2019-10-14 23:52:06,130 INFO L439 ceAbstractionStarter]: At program point L17-3(lines 17 19) the Hoare annotation is: false [2019-10-14 23:52:06,130 INFO L443 ceAbstractionStarter]: For program point L17-4(lines 17 19) no Hoare annotation was computed. [2019-10-14 23:52:06,130 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 4 25) no Hoare annotation was computed. [2019-10-14 23:52:06,131 INFO L443 ceAbstractionStarter]: For program point L9-2(lines 9 12) no Hoare annotation was computed. [2019-10-14 23:52:06,131 INFO L439 ceAbstractionStarter]: At program point L9-3(lines 9 12) the Hoare annotation is: false [2019-10-14 23:52:06,131 INFO L443 ceAbstractionStarter]: For program point L9-4(lines 9 12) no Hoare annotation was computed. [2019-10-14 23:52:06,131 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 4 25) the Hoare annotation is: true [2019-10-14 23:52:06,131 INFO L439 ceAbstractionStarter]: At program point L22(line 22) the Hoare annotation is: false [2019-10-14 23:52:06,131 INFO L443 ceAbstractionStarter]: For program point L22-1(line 22) no Hoare annotation was computed. [2019-10-14 23:52:06,132 INFO L443 ceAbstractionStarter]: For program point L14-2(lines 14 16) no Hoare annotation was computed. [2019-10-14 23:52:06,132 INFO L439 ceAbstractionStarter]: At program point L14-3(lines 14 16) the Hoare annotation is: false [2019-10-14 23:52:06,132 INFO L443 ceAbstractionStarter]: For program point L14-4(lines 14 16) no Hoare annotation was computed. [2019-10-14 23:52:06,132 INFO L443 ceAbstractionStarter]: For program point L2-1(line 2) no Hoare annotation was computed. [2019-10-14 23:52:06,132 INFO L443 ceAbstractionStarter]: For program point L2-3(line 2) no Hoare annotation was computed. [2019-10-14 23:52:06,133 INFO L446 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(line 2) the Hoare annotation is: true [2019-10-14 23:52:06,133 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 2) no Hoare annotation was computed. [2019-10-14 23:52:06,134 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(line 2) no Hoare annotation was computed. [2019-10-14 23:52:06,136 INFO L443 ceAbstractionStarter]: For program point L2(line 2) no Hoare annotation was computed. [2019-10-14 23:52:06,147 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 11:52:06 BoogieIcfgContainer [2019-10-14 23:52:06,147 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-14 23:52:06,151 INFO L168 Benchmark]: Toolchain (without parser) took 2089.28 ms. Allocated memory was 137.4 MB in the beginning and 201.9 MB in the end (delta: 64.5 MB). Free memory was 100.8 MB in the beginning and 96.4 MB in the end (delta: 4.4 MB). Peak memory consumption was 68.9 MB. Max. memory is 7.1 GB. [2019-10-14 23:52:06,154 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 137.4 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2019-10-14 23:52:06,156 INFO L168 Benchmark]: CACSL2BoogieTranslator took 289.90 ms. Allocated memory is still 137.4 MB. Free memory was 100.6 MB in the beginning and 90.6 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. [2019-10-14 23:52:06,158 INFO L168 Benchmark]: Boogie Preprocessor took 135.06 ms. Allocated memory was 137.4 MB in the beginning and 201.9 MB in the end (delta: 64.5 MB). Free memory was 90.6 MB in the beginning and 179.4 MB in the end (delta: -88.8 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. [2019-10-14 23:52:06,164 INFO L168 Benchmark]: RCFGBuilder took 343.69 ms. Allocated memory is still 201.9 MB. Free memory was 179.4 MB in the beginning and 164.2 MB in the end (delta: 15.2 MB). Peak memory consumption was 15.2 MB. Max. memory is 7.1 GB. [2019-10-14 23:52:06,165 INFO L168 Benchmark]: TraceAbstraction took 1316.00 ms. Allocated memory is still 201.9 MB. Free memory was 163.6 MB in the beginning and 96.4 MB in the end (delta: 67.2 MB). Peak memory consumption was 67.2 MB. Max. memory is 7.1 GB. [2019-10-14 23:52:06,178 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 137.4 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 289.90 ms. Allocated memory is still 137.4 MB. Free memory was 100.6 MB in the beginning and 90.6 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 135.06 ms. Allocated memory was 137.4 MB in the beginning and 201.9 MB in the end (delta: 64.5 MB). Free memory was 90.6 MB in the beginning and 179.4 MB in the end (delta: -88.8 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 343.69 ms. Allocated memory is still 201.9 MB. Free memory was 179.4 MB in the beginning and 164.2 MB in the end (delta: 15.2 MB). Peak memory consumption was 15.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1316.00 ms. Allocated memory is still 201.9 MB. Free memory was 163.6 MB in the beginning and 96.4 MB in the end (delta: 67.2 MB). Peak memory consumption was 67.2 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: 14]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 9]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 30 locations, 1 error locations. Result: SAFE, OverallTime: 1.2s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 88 SDtfs, 3 SDslu, 44 SDs, 0 SdLazy, 15 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 30 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30occurred in iteration=0, 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, 3 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 10 LocationsWithAnnotation, 13 PreInvPairs, 13 NumberOfFragments, 10 HoareAnnotationTreeSize, 13 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 10 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 99 NumberOfCodeBlocks, 99 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 116 ConstructedInterpolants, 0 QuantifiedInterpolants, 2752 SizeOfPredicates, 1 NumberOfNonLiveVariables, 88 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 6 InterpolantComputations, 3 PerfectInterpolantSequences, 7/10 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: TIME[ms]: 119, ITERATIONS: 1, WAS_STRONG: 1, WEAKENING_RATIO: 0.9204545454545454, AVG_VARS_REMOVED_DURING_WEAKENING: 0.9545454545454546, AVG_WEAKENED_CONJUNCTS: 0.2727272727272727, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...