/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 --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/loop-new/count_by_1_variant.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 04:02:16,429 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 04:02:16,431 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 04:02:16,449 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-11-07 04:02:16,472 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 04:02:16,475 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 04:02:16,477 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 04:02:16,478 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 04:02:16,478 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 04:02:16,479 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 04:02:16,481 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 04:02:16,482 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 04:02:16,484 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 04:02:16,485 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 04:02:16,486 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 04:02:16,486 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 04:02:16,489 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-07 04:02:16,496 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 04:02:16,497 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 04:02:16,497 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 04:02:16,498 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 [2019-11-07 04:02:16,515 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 04:02:16,516 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 04:02:16,517 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 04:02:16,517 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 04:02:16,518 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 04:02:16,518 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 04:02:16,518 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 04:02:16,518 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 04:02:16,518 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 04:02:16,519 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 04:02:16,520 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 04:02:16,520 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 04:02:16,520 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 04:02:16,521 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 04:02:16,521 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 04:02:16,521 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 04:02:16,521 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 04:02:16,521 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 04:02:16,522 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 04:02:16,522 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 04:02:16,522 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 04:02:16,522 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 04:02:16,523 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 04:02:16,523 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 04:02:16,523 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 04:02:16,523 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 04:02:16,523 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 04:02:16,523 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 04:02:16,524 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-11-07 04:02:16,831 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 04:02:16,846 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 04:02:16,850 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 04:02:16,852 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 04:02:16,852 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 04:02:16,853 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-new/count_by_1_variant.i [2019-11-07 04:02:16,921 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/56d98f82f/9d691cfa730741689c7dbbcaed7002f1/FLAGf62b3176e [2019-11-07 04:02:17,354 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 04:02:17,355 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-new/count_by_1_variant.i [2019-11-07 04:02:17,361 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/56d98f82f/9d691cfa730741689c7dbbcaed7002f1/FLAGf62b3176e [2019-11-07 04:02:17,799 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/56d98f82f/9d691cfa730741689c7dbbcaed7002f1 [2019-11-07 04:02:17,811 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 04:02:17,812 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 04:02:17,815 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 04:02:17,815 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 04:02:17,818 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 04:02:17,819 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:02:17" (1/1) ... [2019-11-07 04:02:17,822 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7babe2c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:02:17, skipping insertion in model container [2019-11-07 04:02:17,822 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:02:17" (1/1) ... [2019-11-07 04:02:17,831 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 04:02:17,845 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 04:02:18,069 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 04:02:18,073 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 04:02:18,089 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 04:02:18,106 INFO L192 MainTranslator]: Completed translation [2019-11-07 04:02:18,107 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:02:18 WrapperNode [2019-11-07 04:02:18,107 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 04:02:18,108 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 04:02:18,108 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 04:02:18,108 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 04:02:18,243 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:02:18" (1/1) ... [2019-11-07 04:02:18,243 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:02:18" (1/1) ... [2019-11-07 04:02:18,249 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:02:18" (1/1) ... [2019-11-07 04:02:18,249 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:02:18" (1/1) ... [2019-11-07 04:02:18,252 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:02:18" (1/1) ... [2019-11-07 04:02:18,257 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:02:18" (1/1) ... [2019-11-07 04:02:18,258 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:02:18" (1/1) ... [2019-11-07 04:02:18,259 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 04:02:18,259 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 04:02:18,259 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 04:02:18,260 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 04:02:18,260 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:02:18" (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 [2019-11-07 04:02:18,325 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 04:02:18,325 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 04:02:18,326 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-11-07 04:02:18,326 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 04:02:18,326 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 04:02:18,326 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-11-07 04:02:18,326 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-11-07 04:02:18,326 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 04:02:18,326 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 04:02:18,327 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 04:02:18,327 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 04:02:18,507 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 04:02:18,507 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-11-07 04:02:18,508 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:02:18 BoogieIcfgContainer [2019-11-07 04:02:18,509 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 04:02:18,510 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 04:02:18,510 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 04:02:18,516 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 04:02:18,516 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 04:02:17" (1/3) ... [2019-11-07 04:02:18,517 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@90a9722 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:02:18, skipping insertion in model container [2019-11-07 04:02:18,518 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:02:18" (2/3) ... [2019-11-07 04:02:18,518 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@90a9722 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:02:18, skipping insertion in model container [2019-11-07 04:02:18,518 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:02:18" (3/3) ... [2019-11-07 04:02:18,523 INFO L109 eAbstractionObserver]: Analyzing ICFG count_by_1_variant.i [2019-11-07 04:02:18,551 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 04:02:18,571 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 04:02:18,597 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 04:02:18,621 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 04:02:18,622 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 04:02:18,622 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 04:02:18,622 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 04:02:18,622 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 04:02:18,622 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 04:02:18,622 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 04:02:18,623 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 04:02:18,639 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2019-11-07 04:02:18,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-07 04:02:18,644 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:02:18,645 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:02:18,648 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:02:18,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:02:18,654 INFO L82 PathProgramCache]: Analyzing trace with hash -1875203651, now seen corresponding path program 1 times [2019-11-07 04:02:18,661 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:02:18,661 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358213051] [2019-11-07 04:02:18,661 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:02:18,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:02:18,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:02:18,875 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358213051] [2019-11-07 04:02:18,878 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:02:18,878 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-07 04:02:18,880 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554966984] [2019-11-07 04:02:18,884 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-07 04:02:18,884 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:02:18,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-07 04:02:18,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-07 04:02:18,896 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 5 states. [2019-11-07 04:02:18,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:02:18,989 INFO L93 Difference]: Finished difference Result 36 states and 42 transitions. [2019-11-07 04:02:18,990 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-07 04:02:18,991 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2019-11-07 04:02:18,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:02:19,000 INFO L225 Difference]: With dead ends: 36 [2019-11-07 04:02:19,000 INFO L226 Difference]: Without dead ends: 21 [2019-11-07 04:02:19,003 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-07 04:02:19,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-11-07 04:02:19,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 20. [2019-11-07 04:02:19,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-11-07 04:02:19,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2019-11-07 04:02:19,043 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 10 [2019-11-07 04:02:19,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:02:19,044 INFO L462 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2019-11-07 04:02:19,044 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-07 04:02:19,044 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2019-11-07 04:02:19,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-11-07 04:02:19,045 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:02:19,045 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:02:19,046 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:02:19,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:02:19,046 INFO L82 PathProgramCache]: Analyzing trace with hash -1632080392, now seen corresponding path program 1 times [2019-11-07 04:02:19,047 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:02:19,047 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984735118] [2019-11-07 04:02:19,047 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:02:19,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:02:19,114 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:02:19,114 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984735118] [2019-11-07 04:02:19,115 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1219833391] [2019-11-07 04:02:19,115 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 [2019-11-07 04:02:19,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:02:19,163 INFO L256 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-07 04:02:19,171 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 04:02:19,197 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:02:19,227 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:02:19,227 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 04:02:19,281 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:02:19,282 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [343042593] [2019-11-07 04:02:19,312 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2019-11-07 04:02:19,312 INFO L166 IcfgInterpreter]: Building call graph [2019-11-07 04:02:19,339 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-07 04:02:19,349 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-07 04:02:19,350 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-07 04:02:19,396 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 1 for LOIs [2019-11-07 04:02:19,638 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 6 for LOIs [2019-11-07 04:02:19,647 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 1 for LOIs [2019-11-07 04:02:19,648 INFO L180 IcfgInterpreter]: Interpretation finished [2019-11-07 04:02:19,813 INFO L218 FreeRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-11-07 04:02:19,813 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 8] total 17 [2019-11-07 04:02:19,815 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070335868] [2019-11-07 04:02:19,816 INFO L442 AbstractCegarLoop]: Interpolant automaton has 17 states [2019-11-07 04:02:19,817 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:02:19,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2019-11-07 04:02:19,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2019-11-07 04:02:19,820 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand 17 states. [2019-11-07 04:02:19,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:02:19,977 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2019-11-07 04:02:19,978 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-07 04:02:19,978 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 17 [2019-11-07 04:02:19,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:02:19,979 INFO L225 Difference]: With dead ends: 25 [2019-11-07 04:02:19,979 INFO L226 Difference]: Without dead ends: 0 [2019-11-07 04:02:19,980 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=79, Invalid=301, Unknown=0, NotChecked=0, Total=380 [2019-11-07 04:02:19,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-07 04:02:19,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-07 04:02:19,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-07 04:02:19,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-07 04:02:19,981 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2019-11-07 04:02:19,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:02:19,982 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-07 04:02:19,982 INFO L463 AbstractCegarLoop]: Interpolant automaton has 17 states. [2019-11-07 04:02:19,982 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-07 04:02:19,982 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-07 04:02:20,187 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:02:20,192 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-07 04:02:20,257 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2019-11-07 04:02:20,258 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-11-07 04:02:20,258 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-07 04:02:20,258 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-11-07 04:02:20,258 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-11-07 04:02:20,258 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-07 04:02:20,259 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 10 16) the Hoare annotation is: true [2019-11-07 04:02:20,259 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 10 16) no Hoare annotation was computed. [2019-11-07 04:02:20,259 INFO L439 ceAbstractionStarter]: At program point L13(line 13) the Hoare annotation is: (and (<= 0 main_~i~0) (not (= main_~i~0 1000000)) (<= main_~i~0 1000000)) [2019-11-07 04:02:20,259 INFO L443 ceAbstractionStarter]: For program point L13-1(lines 12 14) no Hoare annotation was computed. [2019-11-07 04:02:20,260 INFO L439 ceAbstractionStarter]: At program point L12-2(lines 12 14) the Hoare annotation is: (and (<= 0 main_~i~0) (<= main_~i~0 1000000)) [2019-11-07 04:02:20,260 INFO L446 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2019-11-07 04:02:20,260 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2019-11-07 04:02:20,260 INFO L443 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2019-11-07 04:02:20,260 INFO L443 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2019-11-07 04:02:20,260 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2019-11-07 04:02:20,261 INFO L443 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2019-11-07 04:02:20,277 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 04:02:20 BoogieIcfgContainer [2019-11-07 04:02:20,277 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-07 04:02:20,280 INFO L168 Benchmark]: Toolchain (without parser) took 2467.07 ms. Allocated memory was 144.7 MB in the beginning and 234.9 MB in the end (delta: 90.2 MB). Free memory was 101.1 MB in the beginning and 182.2 MB in the end (delta: -81.1 MB). Peak memory consumption was 9.1 MB. Max. memory is 7.1 GB. [2019-11-07 04:02:20,281 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 144.7 MB. Free memory was 119.7 MB in the beginning and 119.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-11-07 04:02:20,282 INFO L168 Benchmark]: CACSL2BoogieTranslator took 293.80 ms. Allocated memory is still 144.7 MB. Free memory was 100.9 MB in the beginning and 91.8 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.1 MB. Max. memory is 7.1 GB. [2019-11-07 04:02:20,284 INFO L168 Benchmark]: Boogie Preprocessor took 150.95 ms. Allocated memory was 144.7 MB in the beginning and 202.4 MB in the end (delta: 57.7 MB). Free memory was 91.8 MB in the beginning and 180.8 MB in the end (delta: -89.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. [2019-11-07 04:02:20,284 INFO L168 Benchmark]: RCFGBuilder took 249.37 ms. Allocated memory is still 202.4 MB. Free memory was 180.8 MB in the beginning and 169.2 MB in the end (delta: 11.7 MB). Peak memory consumption was 11.7 MB. Max. memory is 7.1 GB. [2019-11-07 04:02:20,285 INFO L168 Benchmark]: TraceAbstraction took 1767.64 ms. Allocated memory was 202.4 MB in the beginning and 234.9 MB in the end (delta: 32.5 MB). Free memory was 169.2 MB in the beginning and 182.2 MB in the end (delta: -13.0 MB). Peak memory consumption was 19.5 MB. Max. memory is 7.1 GB. [2019-11-07 04:02:20,290 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 144.7 MB. Free memory was 119.7 MB in the beginning and 119.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 293.80 ms. Allocated memory is still 144.7 MB. Free memory was 100.9 MB in the beginning and 91.8 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 150.95 ms. Allocated memory was 144.7 MB in the beginning and 202.4 MB in the end (delta: 57.7 MB). Free memory was 91.8 MB in the beginning and 180.8 MB in the end (delta: -89.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 249.37 ms. Allocated memory is still 202.4 MB. Free memory was 180.8 MB in the beginning and 169.2 MB in the end (delta: 11.7 MB). Peak memory consumption was 11.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1767.64 ms. Allocated memory was 202.4 MB in the beginning and 234.9 MB in the end (delta: 32.5 MB). Free memory was 169.2 MB in the beginning and 182.2 MB in the end (delta: -13.0 MB). Peak memory consumption was 19.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: 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: 12]: Loop Invariant Derived loop invariant: 0 <= i && i <= 1000000 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 17 locations, 1 error locations. Result: SAFE, OverallTime: 1.6s, OverallIterations: 2, TraceHistogramMax: 2, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 19 SDtfs, 26 SDslu, 79 SDs, 0 SdLazy, 70 SolverSat, 24 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 65 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=1, 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, 2 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 10 PreInvPairs, 17 NumberOfFragments, 23 HoareAnnotationTreeSize, 10 FomulaSimplifications, 21 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 26 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 44 NumberOfCodeBlocks, 44 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 57 ConstructedInterpolants, 0 QuantifiedInterpolants, 1675 SizeOfPredicates, 2 NumberOfNonLiveVariables, 34 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 4 InterpolantComputations, 1 PerfectInterpolantSequences, 6/12 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: OVERALL_TIME[ms]: 337, ICFG_INTERPRETER_ENTERED_PROCEDURES: 4, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 14, DAG_INTERPRETER_EARLY_EXITS: 0, TOOLS_POST_APPLICATIONS: 18, TOOLS_POST_TIME[ms]: 8, TOOLS_POST_CALL_APPLICATIONS: 13, TOOLS_POST_CALL_TIME[ms]: 29, TOOLS_POST_RETURN_APPLICATIONS: 10, TOOLS_POST_RETURN_TIME[ms]: 18, TOOLS_QUANTIFIERELIM_APPLICATIONS: 41, TOOLS_QUANTIFIERELIM_TIME[ms]: 45, TOOLS_QUANTIFIERELIM_MAX_TIME[ms]: 8, FLUID_QUERY_TIME[ms]: 4, FLUID_QUERIES: 60, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 6, DOMAIN_JOIN_TIME[ms]: 104, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME[ms]: 0, DOMAIN_WIDEN_APPLICATIONS: 2, DOMAIN_WIDEN_TIME[ms]: 58, DOMAIN_ISSUBSETEQ_APPLICATIONS: 3, DOMAIN_ISSUBSETEQ_TIME[ms]: 11, DOMAIN_ISBOTTOM_APPLICATIONS: 14, DOMAIN_ISBOTTOM_TIME[ms]: 23, LOOP_SUMMARIZER_APPLICATIONS: 1, LOOP_SUMMARIZER_CACHE_MISSES: 1, LOOP_SUMMARIZER_OVERALL_TIME[ms]: 218, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 218, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 3, CALL_SUMMARIZER_APPLICATIONS: 10, CALL_SUMMARIZER_CACHE_MISSES: 2, CALL_SUMMARIZER_OVERALL_TIME[ms]: 6, CALL_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 6, PROCEDURE_GRAPH_BUILDER_TIME[ms]: 4, PATH_EXPR_TIME[ms]: 3, REGEX_TO_DAG_TIME[ms]: 3, DAG_COMPRESSION_TIME[ms]: 12, DAG_COMPRESSION_PROCESSED_NODES: 78, DAG_COMPRESSION_RETAINED_NODES: 52, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...