/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/loop-industry-pattern/aiob_4.c.v+lh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 00:33:32,167 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 00:33:32,169 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 00:33:32,184 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 00:33:32,184 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 00:33:32,186 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 00:33:32,188 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 00:33:32,198 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 00:33:32,200 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 00:33:32,202 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 00:33:32,203 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 00:33:32,204 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 00:33:32,204 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 00:33:32,205 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 00:33:32,208 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 00:33:32,209 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 00:33:32,210 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 00:33:32,211 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 00:33:32,214 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 00:33:32,217 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 00:33:32,221 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 00:33:32,221 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 00:33:32,222 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 00:33:32,225 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 00:33:32,228 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-07 00:33:32,240 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 00:33:32,244 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 00:33:32,244 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 00:33:32,245 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 00:33:32,279 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 00:33:32,280 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 00:33:32,281 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 00:33:32,281 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 00:33:32,281 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 00:33:32,281 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 00:33:32,281 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 00:33:32,285 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 00:33:32,285 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 00:33:32,285 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 00:33:32,285 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 00:33:32,286 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 00:33:32,286 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 00:33:32,286 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 00:33:32,286 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 00:33:32,286 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 00:33:32,289 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 00:33:32,289 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 00:33:32,289 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 00:33:32,289 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 00:33:32,290 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 00:33:32,290 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 00:33:32,290 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 00:33:32,290 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 00:33:32,290 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 00:33:32,292 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 00:33:32,292 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 00:33:32,292 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 00:33:32,293 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 00:33:32,590 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 00:33:32,611 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 00:33:32,615 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 00:33:32,617 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 00:33:32,617 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 00:33:32,618 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-industry-pattern/aiob_4.c.v+lh-reducer.c [2019-11-07 00:33:32,689 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe97d8841/230dc1f976f44766a2bf348396143d7b/FLAGa516b60e7 [2019-11-07 00:33:33,119 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 00:33:33,120 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-industry-pattern/aiob_4.c.v+lh-reducer.c [2019-11-07 00:33:33,133 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe97d8841/230dc1f976f44766a2bf348396143d7b/FLAGa516b60e7 [2019-11-07 00:33:33,496 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe97d8841/230dc1f976f44766a2bf348396143d7b [2019-11-07 00:33:33,507 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 00:33:33,508 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 00:33:33,509 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 00:33:33,510 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 00:33:33,513 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 00:33:33,514 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:33:33" (1/1) ... [2019-11-07 00:33:33,516 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a1df810 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:33:33, skipping insertion in model container [2019-11-07 00:33:33,517 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:33:33" (1/1) ... [2019-11-07 00:33:33,524 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 00:33:33,549 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 00:33:34,039 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 00:33:34,050 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 00:33:34,116 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 00:33:34,132 INFO L192 MainTranslator]: Completed translation [2019-11-07 00:33:34,132 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:33:34 WrapperNode [2019-11-07 00:33:34,132 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 00:33:34,133 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 00:33:34,133 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 00:33:34,133 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 00:33:34,143 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:33:34" (1/1) ... [2019-11-07 00:33:34,143 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:33:34" (1/1) ... [2019-11-07 00:33:34,160 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:33:34" (1/1) ... [2019-11-07 00:33:34,160 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:33:34" (1/1) ... [2019-11-07 00:33:34,192 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:33:34" (1/1) ... [2019-11-07 00:33:34,197 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:33:34" (1/1) ... [2019-11-07 00:33:34,200 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:33:34" (1/1) ... [2019-11-07 00:33:34,205 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 00:33:34,206 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 00:33:34,206 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 00:33:34,206 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 00:33:34,207 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:33:34" (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 00:33:34,274 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 00:33:34,274 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 00:33:34,275 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 00:33:34,275 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 00:33:34,275 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_89 [2019-11-07 00:33:34,275 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2019-11-07 00:33:34,275 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 00:33:34,276 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-11-07 00:33:34,276 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-07 00:33:34,276 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-07 00:33:34,276 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-07 00:33:34,276 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-07 00:33:34,276 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-07 00:33:34,277 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 00:33:34,277 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 00:33:34,277 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-07 00:33:34,277 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-07 00:33:35,026 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 00:33:35,027 INFO L284 CfgBuilder]: Removed 0 assume(true) statements. [2019-11-07 00:33:35,028 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:33:35 BoogieIcfgContainer [2019-11-07 00:33:35,029 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 00:33:35,031 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 00:33:35,031 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 00:33:35,034 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 00:33:35,034 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:33:33" (1/3) ... [2019-11-07 00:33:35,035 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5aa49a06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:33:35, skipping insertion in model container [2019-11-07 00:33:35,035 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:33:34" (2/3) ... [2019-11-07 00:33:35,036 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5aa49a06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:33:35, skipping insertion in model container [2019-11-07 00:33:35,036 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:33:35" (3/3) ... [2019-11-07 00:33:35,038 INFO L109 eAbstractionObserver]: Analyzing ICFG aiob_4.c.v+lh-reducer.c [2019-11-07 00:33:35,048 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 00:33:35,058 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 00:33:35,069 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 00:33:35,095 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 00:33:35,095 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 00:33:35,095 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 00:33:35,095 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 00:33:35,096 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 00:33:35,096 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 00:33:35,096 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 00:33:35,096 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 00:33:35,111 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2019-11-07 00:33:35,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-07 00:33:35,116 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:33:35,116 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:33:35,118 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:33:35,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:33:35,124 INFO L82 PathProgramCache]: Analyzing trace with hash 1960518123, now seen corresponding path program 1 times [2019-11-07 00:33:35,133 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:33:35,133 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975056062] [2019-11-07 00:33:35,134 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:33:35,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:33:35,532 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 00:33:35,533 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975056062] [2019-11-07 00:33:35,534 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:33:35,534 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-07 00:33:35,535 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578224831] [2019-11-07 00:33:35,541 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 00:33:35,542 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:33:35,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 00:33:35,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-07 00:33:35,562 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 4 states. [2019-11-07 00:33:35,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:33:35,619 INFO L93 Difference]: Finished difference Result 38 states and 46 transitions. [2019-11-07 00:33:35,620 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-07 00:33:35,621 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2019-11-07 00:33:35,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:33:35,630 INFO L225 Difference]: With dead ends: 38 [2019-11-07 00:33:35,631 INFO L226 Difference]: Without dead ends: 21 [2019-11-07 00:33:35,637 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-07 00:33:35,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-11-07 00:33:35,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 18. [2019-11-07 00:33:35,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-11-07 00:33:35,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2019-11-07 00:33:35,670 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 12 [2019-11-07 00:33:35,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:33:35,670 INFO L462 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2019-11-07 00:33:35,671 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 00:33:35,671 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2019-11-07 00:33:35,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-11-07 00:33:35,672 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:33:35,672 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:33:35,672 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:33:35,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:33:35,672 INFO L82 PathProgramCache]: Analyzing trace with hash 1182240945, now seen corresponding path program 1 times [2019-11-07 00:33:35,673 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:33:35,673 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716971419] [2019-11-07 00:33:35,673 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:33:35,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:33:35,835 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:33:35,836 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716971419] [2019-11-07 00:33:35,836 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1639821433] [2019-11-07 00:33:35,836 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 00:33:35,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:33:35,995 INFO L256 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-07 00:33:36,002 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:33:36,046 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:33:36,046 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:33:36,102 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:33:36,102 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [10828182] [2019-11-07 00:33:36,110 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 18 [2019-11-07 00:33:36,188 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-11-07 00:33:36,188 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-11-07 00:33:36,246 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-11-07 00:33:36,247 INFO L272 AbstractInterpreter]: Visited 2 different actions 2 times. Never merged. Never widened. Performed 21 root evaluator evaluations with a maximum evaluation depth of 0. Performed 21 inverse root evaluator evaluations with a maximum inverse evaluation depth of 0. Never found a fixpoint. Largest state had 32 variables. [2019-11-07 00:33:36,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:33:36,251 INFO L536 sIntCurrentIteration]: Generating AbsInt predicates [2019-11-07 00:33:36,278 INFO L219 lantSequenceWeakener]: Could never weaken! [2019-11-07 00:33:36,278 INFO L551 sIntCurrentIteration]: Unifying AI predicates [2019-11-07 00:33:36,279 INFO L553 sIntCurrentIteration]: We unified 16 AI predicates to 16 [2019-11-07 00:33:36,279 INFO L562 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-11-07 00:33:36,280 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2019-11-07 00:33:36,280 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5, 5, 5] total 9 [2019-11-07 00:33:36,282 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708783318] [2019-11-07 00:33:36,282 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-07 00:33:36,282 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:33:36,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 00:33:36,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-11-07 00:33:36,284 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 2 states. [2019-11-07 00:33:36,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:33:36,286 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2019-11-07 00:33:36,286 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-07 00:33:36,287 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 17 [2019-11-07 00:33:36,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:33:36,287 INFO L225 Difference]: With dead ends: 18 [2019-11-07 00:33:36,287 INFO L226 Difference]: Without dead ends: 0 [2019-11-07 00:33:36,289 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 30 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-11-07 00:33:36,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-07 00:33:36,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-07 00:33:36,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-07 00:33:36,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-07 00:33:36,291 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2019-11-07 00:33:36,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:33:36,292 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-07 00:33:36,295 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-07 00:33:36,295 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-07 00:33:36,295 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-07 00:33:36,496 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:33:36,502 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-07 00:33:36,522 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2019-11-07 00:33:36,522 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2019-11-07 00:33:36,522 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-11-07 00:33:36,522 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-07 00:33:36,523 INFO L439 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: false [2019-11-07 00:33:36,523 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-11-07 00:33:36,523 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-07 00:33:36,523 INFO L443 ceAbstractionStarter]: For program point L159(lines 159 234) no Hoare annotation was computed. [2019-11-07 00:33:36,523 INFO L443 ceAbstractionStarter]: For program point L188(lines 188 206) no Hoare annotation was computed. [2019-11-07 00:33:36,523 INFO L443 ceAbstractionStarter]: For program point L219(line 219) no Hoare annotation was computed. [2019-11-07 00:33:36,524 INFO L443 ceAbstractionStarter]: For program point L217(lines 217 225) no Hoare annotation was computed. [2019-11-07 00:33:36,524 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 131 235) no Hoare annotation was computed. [2019-11-07 00:33:36,524 INFO L443 ceAbstractionStarter]: For program point L180(lines 180 227) no Hoare annotation was computed. [2019-11-07 00:33:36,524 INFO L443 ceAbstractionStarter]: For program point L178(lines 178 232) no Hoare annotation was computed. [2019-11-07 00:33:36,524 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 131 235) no Hoare annotation was computed. [2019-11-07 00:33:36,524 INFO L443 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 219) no Hoare annotation was computed. [2019-11-07 00:33:36,525 INFO L443 ceAbstractionStarter]: For program point L195(lines 195 205) no Hoare annotation was computed. [2019-11-07 00:33:36,525 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 131 235) the Hoare annotation is: true [2019-11-07 00:33:36,525 INFO L446 ceAbstractionStarter]: At program point L200(lines 165 233) the Hoare annotation is: true [2019-11-07 00:33:36,532 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 12:33:36 BoogieIcfgContainer [2019-11-07 00:33:36,533 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-07 00:33:36,535 INFO L168 Benchmark]: Toolchain (without parser) took 3025.99 ms. Allocated memory was 136.8 MB in the beginning and 232.3 MB in the end (delta: 95.4 MB). Free memory was 100.7 MB in the beginning and 110.6 MB in the end (delta: -9.9 MB). Peak memory consumption was 85.5 MB. Max. memory is 7.1 GB. [2019-11-07 00:33:36,537 INFO L168 Benchmark]: CDTParser took 0.97 ms. Allocated memory is still 136.8 MB. Free memory was 120.0 MB in the beginning and 119.8 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2019-11-07 00:33:36,538 INFO L168 Benchmark]: CACSL2BoogieTranslator took 623.23 ms. Allocated memory was 136.8 MB in the beginning and 202.4 MB in the end (delta: 65.5 MB). Free memory was 100.5 MB in the beginning and 175.2 MB in the end (delta: -74.8 MB). Peak memory consumption was 24.8 MB. Max. memory is 7.1 GB. [2019-11-07 00:33:36,539 INFO L168 Benchmark]: Boogie Preprocessor took 72.74 ms. Allocated memory is still 202.4 MB. Free memory was 175.2 MB in the beginning and 170.7 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.6 MB. Max. memory is 7.1 GB. [2019-11-07 00:33:36,540 INFO L168 Benchmark]: RCFGBuilder took 822.77 ms. Allocated memory is still 202.4 MB. Free memory was 170.7 MB in the beginning and 98.6 MB in the end (delta: 72.1 MB). Peak memory consumption was 72.1 MB. Max. memory is 7.1 GB. [2019-11-07 00:33:36,541 INFO L168 Benchmark]: TraceAbstraction took 1502.01 ms. Allocated memory was 202.4 MB in the beginning and 232.3 MB in the end (delta: 29.9 MB). Free memory was 97.9 MB in the beginning and 110.6 MB in the end (delta: -12.7 MB). Peak memory consumption was 17.2 MB. Max. memory is 7.1 GB. [2019-11-07 00:33:36,545 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.97 ms. Allocated memory is still 136.8 MB. Free memory was 120.0 MB in the beginning and 119.8 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 623.23 ms. Allocated memory was 136.8 MB in the beginning and 202.4 MB in the end (delta: 65.5 MB). Free memory was 100.5 MB in the beginning and 175.2 MB in the end (delta: -74.8 MB). Peak memory consumption was 24.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 72.74 ms. Allocated memory is still 202.4 MB. Free memory was 175.2 MB in the beginning and 170.7 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 822.77 ms. Allocated memory is still 202.4 MB. Free memory was 170.7 MB in the beginning and 98.6 MB in the end (delta: 72.1 MB). Peak memory consumption was 72.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1502.01 ms. Allocated memory was 202.4 MB in the beginning and 232.3 MB in the end (delta: 29.9 MB). Free memory was 97.9 MB in the beginning and 110.6 MB in the end (delta: -12.7 MB). Peak memory consumption was 17.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 219]: 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: 165]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 19 locations, 1 error locations. Result: SAFE, OverallTime: 1.4s, OverallIterations: 2, TraceHistogramMax: 2, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 20 SDtfs, 19 SDslu, 30 SDs, 0 SdLazy, 12 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 45 GetRequests, 32 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred 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, 3 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 5 NumberOfFragments, 5 HoareAnnotationTreeSize, 5 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 46 NumberOfCodeBlocks, 46 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 59 ConstructedInterpolants, 0 QuantifiedInterpolants, 2651 SizeOfPredicates, 2 NumberOfNonLiveVariables, 424 ConjunctsInSsa, 7 ConjunctsInUnsatCore, 4 InterpolantComputations, 1 PerfectInterpolantSequences, 0/9 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: TIME[ms]: 141, ITERATIONS: 1, WAS_STRONG: 1, WEAKENING_RATIO: 1.0, AVG_VARS_REMOVED_DURING_WEAKENING: 11.625, AVG_WEAKENED_CONJUNCTS: 0.0, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...