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-lit/gcnr2008.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 03:02:43,153 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 03:02:43,156 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 03:02:43,174 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 03:02:43,175 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 03:02:43,177 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 03:02:43,180 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 03:02:43,190 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 03:02:43,195 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 03:02:43,198 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 03:02:43,200 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 03:02:43,201 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 03:02:43,202 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 03:02:43,204 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 03:02:43,207 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 03:02:43,208 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 03:02:43,210 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 03:02:43,212 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 03:02:43,214 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 03:02:43,220 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 03:02:43,225 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 03:02:43,228 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 03:02:43,231 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 03:02:43,232 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 03:02:43,235 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-15 03:02:43,240 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 03:02:43,241 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 03:02:43,242 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 03:02:43,242 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 03:02:43,244 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 03:02:43,244 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 03:02:43,245 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 03:02:43,245 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 03:02:43,246 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 03:02:43,247 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 03:02:43,248 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 03:02:43,249 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-15 03:02:43,282 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 03:02:43,282 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 03:02:43,285 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 03:02:43,285 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 03:02:43,285 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 03:02:43,285 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 03:02:43,285 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 03:02:43,286 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 03:02:43,286 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 03:02:43,286 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 03:02:43,287 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 03:02:43,287 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 03:02:43,288 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 03:02:43,288 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 03:02:43,288 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 03:02:43,288 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 03:02:43,289 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 03:02:43,289 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 03:02:43,289 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 03:02:43,289 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 03:02:43,290 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 03:02:43,290 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 03:02:43,290 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 03:02:43,290 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 03:02:43,290 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 03:02:43,291 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 03:02:43,291 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 03:02:43,291 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 03:02:43,291 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 [2019-10-15 03:02:43,673 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 03:02:43,701 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 03:02:43,706 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 03:02:43,708 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 03:02:43,708 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 03:02:43,709 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/gcnr2008.i [2019-10-15 03:02:43,807 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4704c6909/55e62c85243b452aa363bdd08433a84a/FLAG22cc4123c [2019-10-15 03:02:44,406 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 03:02:44,407 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/gcnr2008.i [2019-10-15 03:02:44,415 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4704c6909/55e62c85243b452aa363bdd08433a84a/FLAG22cc4123c [2019-10-15 03:02:44,795 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4704c6909/55e62c85243b452aa363bdd08433a84a [2019-10-15 03:02:44,806 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 03:02:44,808 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 03:02:44,813 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 03:02:44,813 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 03:02:44,817 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 03:02:44,818 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:02:44" (1/1) ... [2019-10-15 03:02:44,821 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@638a2e11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:02:44, skipping insertion in model container [2019-10-15 03:02:44,821 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:02:44" (1/1) ... [2019-10-15 03:02:44,830 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 03:02:44,851 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 03:02:45,034 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:02:45,042 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 03:02:45,084 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:02:45,102 INFO L192 MainTranslator]: Completed translation [2019-10-15 03:02:45,102 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:02:45 WrapperNode [2019-10-15 03:02:45,103 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 03:02:45,103 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 03:02:45,104 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 03:02:45,104 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 03:02:45,213 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:02:45" (1/1) ... [2019-10-15 03:02:45,214 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:02:45" (1/1) ... [2019-10-15 03:02:45,226 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:02:45" (1/1) ... [2019-10-15 03:02:45,226 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:02:45" (1/1) ... [2019-10-15 03:02:45,230 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:02:45" (1/1) ... [2019-10-15 03:02:45,235 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:02:45" (1/1) ... [2019-10-15 03:02:45,236 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:02:45" (1/1) ... [2019-10-15 03:02:45,238 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 03:02:45,238 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 03:02:45,238 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 03:02:45,238 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 03:02:45,239 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:02:45" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 03:02:45,297 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 03:02:45,297 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 03:02:45,297 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-15 03:02:45,297 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 03:02:45,297 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 03:02:45,298 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-15 03:02:45,298 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-15 03:02:45,298 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 03:02:45,298 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 03:02:45,298 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 03:02:45,298 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 03:02:45,776 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 03:02:45,777 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-15 03:02:45,778 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:02:45 BoogieIcfgContainer [2019-10-15 03:02:45,778 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 03:02:45,779 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 03:02:45,780 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 03:02:45,783 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 03:02:45,783 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:02:44" (1/3) ... [2019-10-15 03:02:45,784 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7116c0f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:02:45, skipping insertion in model container [2019-10-15 03:02:45,784 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:02:45" (2/3) ... [2019-10-15 03:02:45,784 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7116c0f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:02:45, skipping insertion in model container [2019-10-15 03:02:45,785 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:02:45" (3/3) ... [2019-10-15 03:02:45,787 INFO L109 eAbstractionObserver]: Analyzing ICFG gcnr2008.i [2019-10-15 03:02:45,797 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 03:02:45,805 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 03:02:45,816 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 03:02:45,839 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 03:02:45,840 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 03:02:45,840 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 03:02:45,840 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 03:02:45,840 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 03:02:45,841 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 03:02:45,841 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 03:02:45,841 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 03:02:45,863 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2019-10-15 03:02:45,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-10-15 03:02:45,871 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:02:45,872 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:02:45,874 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:02:45,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:02:45,884 INFO L82 PathProgramCache]: Analyzing trace with hash -1706723647, now seen corresponding path program 1 times [2019-10-15 03:02:45,893 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:02:45,893 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915792564] [2019-10-15 03:02:45,894 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:02:45,894 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:02:45,894 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:02:45,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:02:46,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:02:46,015 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915792564] [2019-10-15 03:02:46,016 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:02:46,016 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-15 03:02:46,017 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37277798] [2019-10-15 03:02:46,022 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-15 03:02:46,023 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:02:46,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-15 03:02:46,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 03:02:46,042 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 2 states. [2019-10-15 03:02:46,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:02:46,070 INFO L93 Difference]: Finished difference Result 29 states and 32 transitions. [2019-10-15 03:02:46,070 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-15 03:02:46,071 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-10-15 03:02:46,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:02:46,080 INFO L225 Difference]: With dead ends: 29 [2019-10-15 03:02:46,080 INFO L226 Difference]: Without dead ends: 12 [2019-10-15 03:02:46,085 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 03:02:46,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2019-10-15 03:02:46,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2019-10-15 03:02:46,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-10-15 03:02:46,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2019-10-15 03:02:46,133 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2019-10-15 03:02:46,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:02:46,134 INFO L462 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2019-10-15 03:02:46,135 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-15 03:02:46,135 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2019-10-15 03:02:46,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-10-15 03:02:46,137 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:02:46,138 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:02:46,138 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:02:46,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:02:46,140 INFO L82 PathProgramCache]: Analyzing trace with hash 2024305743, now seen corresponding path program 1 times [2019-10-15 03:02:46,140 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:02:46,140 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901787531] [2019-10-15 03:02:46,141 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:02:46,141 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:02:46,141 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:02:46,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-15 03:02:46,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-15 03:02:46,222 INFO L168 tionRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2019-10-15 03:02:46,223 INFO L445 BasicCegarLoop]: Counterexample might be feasible [2019-10-15 03:02:46,248 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 03:02:46 BoogieIcfgContainer [2019-10-15 03:02:46,249 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-15 03:02:46,251 INFO L168 Benchmark]: Toolchain (without parser) took 1442.80 ms. Allocated memory was 142.6 MB in the beginning and 199.2 MB in the end (delta: 56.6 MB). Free memory was 99.1 MB in the beginning and 136.1 MB in the end (delta: -36.9 MB). Peak memory consumption was 19.7 MB. Max. memory is 7.1 GB. [2019-10-15 03:02:46,253 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 142.6 MB. Free memory was 117.6 MB in the beginning and 117.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-10-15 03:02:46,254 INFO L168 Benchmark]: CACSL2BoogieTranslator took 289.94 ms. Allocated memory is still 142.6 MB. Free memory was 98.9 MB in the beginning and 89.4 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. [2019-10-15 03:02:46,256 INFO L168 Benchmark]: Boogie Preprocessor took 134.39 ms. Allocated memory was 142.6 MB in the beginning and 199.2 MB in the end (delta: 56.6 MB). Free memory was 89.4 MB in the beginning and 177.4 MB in the end (delta: -88.0 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. [2019-10-15 03:02:46,258 INFO L168 Benchmark]: RCFGBuilder took 540.44 ms. Allocated memory is still 199.2 MB. Free memory was 177.4 MB in the beginning and 158.2 MB in the end (delta: 19.2 MB). Peak memory consumption was 19.2 MB. Max. memory is 7.1 GB. [2019-10-15 03:02:46,260 INFO L168 Benchmark]: TraceAbstraction took 469.31 ms. Allocated memory is still 199.2 MB. Free memory was 157.5 MB in the beginning and 136.1 MB in the end (delta: 21.4 MB). Peak memory consumption was 21.4 MB. Max. memory is 7.1 GB. [2019-10-15 03:02:46,268 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 142.6 MB. Free memory was 117.6 MB in the beginning and 117.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 289.94 ms. Allocated memory is still 142.6 MB. Free memory was 98.9 MB in the beginning and 89.4 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 134.39 ms. Allocated memory was 142.6 MB in the beginning and 199.2 MB in the end (delta: 56.6 MB). Free memory was 89.4 MB in the beginning and 177.4 MB in the end (delta: -88.0 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 540.44 ms. Allocated memory is still 199.2 MB. Free memory was 177.4 MB in the beginning and 158.2 MB in the end (delta: 19.2 MB). Peak memory consumption was 19.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 469.31 ms. Allocated memory is still 199.2 MB. Free memory was 157.5 MB in the beginning and 136.1 MB in the end (delta: 21.4 MB). Peak memory consumption was 21.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 5]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L11] int x,y,z,w; [L12] EXPR w = 0 [L12] EXPR z = w = 0 [L12] EXPR y = z = w = 0 [L12] x = y = z = w = 0 VAL [w=0, x=0, y=0, z=0] [L13] COND FALSE !(__VERIFIER_nondet_int() && y < 10000) [L28] CALL __VERIFIER_assert(x >= 4 && y <= 2) VAL [\old(cond)=0] [L4] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L5] __VERIFIER_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 18 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 18 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 21 NumberOfCodeBlocks, 21 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 81 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 incorrect! Received shutdown request...