/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/loops/trex03-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 00:36:10,128 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 00:36:10,130 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 00:36:10,142 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 00:36:10,143 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 00:36:10,144 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 00:36:10,145 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 00:36:10,147 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 00:36:10,149 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 00:36:10,149 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 00:36:10,150 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 00:36:10,152 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 00:36:10,152 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 00:36:10,153 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 00:36:10,154 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 00:36:10,155 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 00:36:10,156 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 00:36:10,156 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 00:36:10,158 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 00:36:10,160 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 00:36:10,162 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 00:36:10,163 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 00:36:10,164 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 00:36:10,165 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 00:36:10,168 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-07 00:36:10,168 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-07 00:36:10,168 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-07 00:36:10,169 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-07 00:36:10,169 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-07 00:36:10,170 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-07 00:36:10,171 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-07 00:36:10,171 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-07 00:36:10,172 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-07 00:36:10,173 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-07 00:36:10,174 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-07 00:36:10,174 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-07 00:36:10,175 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-07 00:36:10,175 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-07 00:36:10,175 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 00:36:10,176 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 00:36:10,177 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 00:36:10,178 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 00:36:10,192 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 00:36:10,192 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 00:36:10,195 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 00:36:10,195 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 00:36:10,195 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 00:36:10,196 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 00:36:10,196 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 00:36:10,196 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 00:36:10,196 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 00:36:10,196 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 00:36:10,197 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 00:36:10,198 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 00:36:10,198 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 00:36:10,198 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 00:36:10,198 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 00:36:10,198 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 00:36:10,199 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 00:36:10,199 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 00:36:10,199 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 00:36:10,199 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 00:36:10,199 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 00:36:10,200 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 00:36:10,200 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 00:36:10,201 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 00:36:10,201 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 00:36:10,201 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 00:36:10,201 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 00:36:10,201 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 00:36:10,202 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 [2019-11-07 00:36:10,491 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 00:36:10,506 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 00:36:10,510 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 00:36:10,511 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 00:36:10,511 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 00:36:10,513 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/trex03-2.c [2019-11-07 00:36:10,577 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0531aa514/550ba847c83a479cb0060a2a7acbfa4b/FLAGd7e890fbf [2019-11-07 00:36:10,993 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 00:36:10,994 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/trex03-2.c [2019-11-07 00:36:10,999 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0531aa514/550ba847c83a479cb0060a2a7acbfa4b/FLAGd7e890fbf [2019-11-07 00:36:11,433 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0531aa514/550ba847c83a479cb0060a2a7acbfa4b [2019-11-07 00:36:11,443 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 00:36:11,445 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 00:36:11,446 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 00:36:11,446 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 00:36:11,450 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 00:36:11,451 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:36:11" (1/1) ... [2019-11-07 00:36:11,454 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3002c0da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:36:11, skipping insertion in model container [2019-11-07 00:36:11,454 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:36:11" (1/1) ... [2019-11-07 00:36:11,461 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 00:36:11,479 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 00:36:11,642 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 00:36:11,645 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 00:36:11,662 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 00:36:11,673 INFO L192 MainTranslator]: Completed translation [2019-11-07 00:36:11,674 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:36:11 WrapperNode [2019-11-07 00:36:11,674 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 00:36:11,675 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 00:36:11,675 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 00:36:11,675 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 00:36:11,685 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:36:11" (1/1) ... [2019-11-07 00:36:11,685 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:36:11" (1/1) ... [2019-11-07 00:36:11,757 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:36:11" (1/1) ... [2019-11-07 00:36:11,758 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:36:11" (1/1) ... [2019-11-07 00:36:11,762 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:36:11" (1/1) ... [2019-11-07 00:36:11,767 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:36:11" (1/1) ... [2019-11-07 00:36:11,773 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:36:11" (1/1) ... [2019-11-07 00:36:11,780 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 00:36:11,781 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 00:36:11,781 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 00:36:11,781 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 00:36:11,783 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:36:11" (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 00:36:11,858 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 00:36:11,858 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 00:36:11,858 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-11-07 00:36:11,858 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 00:36:11,859 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 00:36:11,860 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-11-07 00:36:11,860 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2019-11-07 00:36:11,860 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2019-11-07 00:36:11,861 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 00:36:11,861 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 00:36:11,861 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 00:36:12,102 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 00:36:12,102 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-11-07 00:36:12,104 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:36:12 BoogieIcfgContainer [2019-11-07 00:36:12,104 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 00:36:12,114 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 00:36:12,115 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 00:36:12,119 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 00:36:12,119 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:36:11" (1/3) ... [2019-11-07 00:36:12,120 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e88562d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:36:12, skipping insertion in model container [2019-11-07 00:36:12,120 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:36:11" (2/3) ... [2019-11-07 00:36:12,121 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e88562d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:36:12, skipping insertion in model container [2019-11-07 00:36:12,121 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:36:12" (3/3) ... [2019-11-07 00:36:12,127 INFO L109 eAbstractionObserver]: Analyzing ICFG trex03-2.c [2019-11-07 00:36:12,140 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 00:36:12,155 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 00:36:12,168 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 00:36:12,191 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 00:36:12,192 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 00:36:12,192 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 00:36:12,192 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 00:36:12,192 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 00:36:12,192 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 00:36:12,192 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 00:36:12,193 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 00:36:12,210 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2019-11-07 00:36:12,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-07 00:36:12,214 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:36:12,215 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:36:12,217 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:36:12,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:36:12,221 INFO L82 PathProgramCache]: Analyzing trace with hash -859010367, now seen corresponding path program 1 times [2019-11-07 00:36:12,229 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:36:12,229 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436535890] [2019-11-07 00:36:12,230 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:36:12,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:36:12,327 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 00:36:12,328 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436535890] [2019-11-07 00:36:12,328 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:36:12,329 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-07 00:36:12,330 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684513573] [2019-11-07 00:36:12,335 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-07 00:36:12,337 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:36:12,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-07 00:36:12,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-07 00:36:12,350 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 2 states. [2019-11-07 00:36:12,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:36:12,371 INFO L93 Difference]: Finished difference Result 33 states and 38 transitions. [2019-11-07 00:36:12,371 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-07 00:36:12,372 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-11-07 00:36:12,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:36:12,379 INFO L225 Difference]: With dead ends: 33 [2019-11-07 00:36:12,380 INFO L226 Difference]: Without dead ends: 14 [2019-11-07 00:36:12,383 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 [2019-11-07 00:36:12,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2019-11-07 00:36:12,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2019-11-07 00:36:12,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-11-07 00:36:12,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2019-11-07 00:36:12,414 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 10 [2019-11-07 00:36:12,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:36:12,414 INFO L462 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2019-11-07 00:36:12,415 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-07 00:36:12,415 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2019-11-07 00:36:12,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-07 00:36:12,415 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:36:12,416 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:36:12,416 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:36:12,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:36:12,417 INFO L82 PathProgramCache]: Analyzing trace with hash -873786703, now seen corresponding path program 1 times [2019-11-07 00:36:12,417 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:36:12,417 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400875691] [2019-11-07 00:36:12,417 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:36:12,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:36:12,569 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 00:36:12,573 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400875691] [2019-11-07 00:36:12,574 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:36:12,574 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-07 00:36:12,574 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128079515] [2019-11-07 00:36:12,577 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-07 00:36:12,579 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:36:12,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-07 00:36:12,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-07 00:36:12,581 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand 5 states. [2019-11-07 00:36:12,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:36:12,644 INFO L93 Difference]: Finished difference Result 14 states and 16 transitions. [2019-11-07 00:36:12,644 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 00:36:12,645 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2019-11-07 00:36:12,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:36:12,645 INFO L225 Difference]: With dead ends: 14 [2019-11-07 00:36:12,646 INFO L226 Difference]: Without dead ends: 0 [2019-11-07 00:36:12,647 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 00:36:12,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-07 00:36:12,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-07 00:36:12,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-07 00:36:12,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-07 00:36:12,649 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2019-11-07 00:36:12,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:36:12,649 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-07 00:36:12,650 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-07 00:36:12,650 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-07 00:36:12,650 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-07 00:36:12,655 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-07 00:36:12,697 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2019-11-07 00:36:12,697 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-11-07 00:36:12,697 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-07 00:36:12,697 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-11-07 00:36:12,698 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-11-07 00:36:12,698 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-07 00:36:12,698 INFO L443 ceAbstractionStarter]: For program point L27(line 27) no Hoare annotation was computed. [2019-11-07 00:36:12,698 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 12 29) no Hoare annotation was computed. [2019-11-07 00:36:12,699 INFO L443 ceAbstractionStarter]: For program point L21(lines 21 22) no Hoare annotation was computed. [2019-11-07 00:36:12,699 INFO L443 ceAbstractionStarter]: For program point L21-2(lines 20 22) no Hoare annotation was computed. [2019-11-07 00:36:12,699 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 12 29) no Hoare annotation was computed. [2019-11-07 00:36:12,699 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 12 29) the Hoare annotation is: true [2019-11-07 00:36:12,700 INFO L443 ceAbstractionStarter]: For program point L20(lines 20 22) no Hoare annotation was computed. [2019-11-07 00:36:12,700 INFO L446 ceAbstractionStarter]: At program point L18-2(lines 18 25) the Hoare annotation is: true [2019-11-07 00:36:12,700 INFO L439 ceAbstractionStarter]: At program point L18-3(lines 18 25) the Hoare annotation is: (or (= (* 4294967296 (div main_~x3~0 4294967296)) main_~x3~0) (= (* 4294967296 (div main_~x2~0 4294967296)) main_~x2~0) (= main_~x1~0 (* 4294967296 (div main_~x1~0 4294967296)))) [2019-11-07 00:36:12,701 INFO L446 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2019-11-07 00:36:12,701 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2019-11-07 00:36:12,701 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2019-11-07 00:36:12,701 INFO L443 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2019-11-07 00:36:12,702 INFO L443 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2019-11-07 00:36:12,702 INFO L443 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2019-11-07 00:36:12,709 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 12:36:12 BoogieIcfgContainer [2019-11-07 00:36:12,710 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-07 00:36:12,713 INFO L168 Benchmark]: Toolchain (without parser) took 1267.13 ms. Allocated memory was 136.3 MB in the beginning and 199.8 MB in the end (delta: 63.4 MB). Free memory was 100.9 MB in the beginning and 133.5 MB in the end (delta: -32.6 MB). Peak memory consumption was 30.9 MB. Max. memory is 7.1 GB. [2019-11-07 00:36:12,714 INFO L168 Benchmark]: CDTParser took 1.70 ms. Allocated memory is still 136.3 MB. Free memory was 119.5 MB in the beginning and 119.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-11-07 00:36:12,715 INFO L168 Benchmark]: CACSL2BoogieTranslator took 228.61 ms. Allocated memory is still 136.3 MB. Free memory was 100.7 MB in the beginning and 91.1 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2019-11-07 00:36:12,716 INFO L168 Benchmark]: Boogie Preprocessor took 105.83 ms. Allocated memory was 136.3 MB in the beginning and 199.8 MB in the end (delta: 63.4 MB). Free memory was 91.1 MB in the beginning and 178.6 MB in the end (delta: -87.5 MB). Peak memory consumption was 14.3 MB. Max. memory is 7.1 GB. [2019-11-07 00:36:12,717 INFO L168 Benchmark]: RCFGBuilder took 323.41 ms. Allocated memory is still 199.8 MB. Free memory was 177.9 MB in the beginning and 166.2 MB in the end (delta: 11.7 MB). Peak memory consumption was 11.7 MB. Max. memory is 7.1 GB. [2019-11-07 00:36:12,718 INFO L168 Benchmark]: TraceAbstraction took 595.46 ms. Allocated memory is still 199.8 MB. Free memory was 165.5 MB in the beginning and 133.5 MB in the end (delta: 32.0 MB). Peak memory consumption was 32.0 MB. Max. memory is 7.1 GB. [2019-11-07 00:36:12,721 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.70 ms. Allocated memory is still 136.3 MB. Free memory was 119.5 MB in the beginning and 119.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 228.61 ms. Allocated memory is still 136.3 MB. Free memory was 100.7 MB in the beginning and 91.1 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 105.83 ms. Allocated memory was 136.3 MB in the beginning and 199.8 MB in the end (delta: 63.4 MB). Free memory was 91.1 MB in the beginning and 178.6 MB in the end (delta: -87.5 MB). Peak memory consumption was 14.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 323.41 ms. Allocated memory is still 199.8 MB. Free memory was 177.9 MB in the beginning and 166.2 MB in the end (delta: 11.7 MB). Peak memory consumption was 11.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 595.46 ms. Allocated memory is still 199.8 MB. Free memory was 165.5 MB in the beginning and 133.5 MB in the end (delta: 32.0 MB). Peak memory consumption was 32.0 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: 18]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 21 locations, 1 error locations. Result: SAFE, OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 36 SDtfs, 1 SDslu, 32 SDs, 0 SdLazy, 7 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 8 PreInvPairs, 9 NumberOfFragments, 28 HoareAnnotationTreeSize, 8 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 20 NumberOfCodeBlocks, 20 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 405 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...