/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 -i ../../../trunk/examples/svcomp/array-crafted/bor5.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-06 18:36:16,660 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-06 18:36:16,663 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-06 18:36:16,681 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-06 18:36:16,682 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-06 18:36:16,683 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-06 18:36:16,684 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-06 18:36:16,686 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-06 18:36:16,688 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-06 18:36:16,689 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-06 18:36:16,690 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-06 18:36:16,691 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-06 18:36:16,691 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-06 18:36:16,692 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-06 18:36:16,693 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-06 18:36:16,695 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-06 18:36:16,695 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-06 18:36:16,697 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-06 18:36:16,698 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-06 18:36:16,700 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-06 18:36:16,702 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-06 18:36:16,703 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-06 18:36:16,704 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-06 18:36:16,705 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-06 18:36:16,707 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-06 18:36:16,707 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-06 18:36:16,707 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-06 18:36:16,708 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-06 18:36:16,709 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-06 18:36:16,710 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-06 18:36:16,710 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-06 18:36:16,711 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-06 18:36:16,712 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-06 18:36:16,713 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-06 18:36:16,714 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-06 18:36:16,714 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-06 18:36:16,715 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-06 18:36:16,715 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-06 18:36:16,715 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-06 18:36:16,716 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-06 18:36:16,717 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-06 18:36:16,717 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 [2019-11-06 18:36:16,732 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-06 18:36:16,732 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-06 18:36:16,734 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-06 18:36:16,734 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-06 18:36:16,734 INFO L138 SettingsManager]: * Use SBE=true [2019-11-06 18:36:16,734 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-06 18:36:16,734 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-06 18:36:16,735 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-06 18:36:16,735 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-06 18:36:16,735 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-06 18:36:16,735 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-06 18:36:16,735 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-06 18:36:16,736 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-06 18:36:16,736 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-06 18:36:16,736 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-06 18:36:16,736 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-06 18:36:16,736 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-06 18:36:16,737 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-06 18:36:16,737 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-06 18:36:16,737 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-06 18:36:16,737 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-06 18:36:16,738 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 18:36:16,738 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-06 18:36:16,738 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-06 18:36:16,738 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-06 18:36:16,738 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-06 18:36:16,739 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-06 18:36:16,739 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-06 18:36:16,739 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-06 18:36:17,023 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-06 18:36:17,044 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-06 18:36:17,048 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-06 18:36:17,050 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-06 18:36:17,050 INFO L275 PluginConnector]: CDTParser initialized [2019-11-06 18:36:17,051 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-crafted/bor5.i [2019-11-06 18:36:17,115 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3ddaabc87/87965833356342aa8b45ed6189bf00db/FLAG774c0ed62 [2019-11-06 18:36:17,578 INFO L306 CDTParser]: Found 1 translation units. [2019-11-06 18:36:17,581 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-crafted/bor5.i [2019-11-06 18:36:17,588 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3ddaabc87/87965833356342aa8b45ed6189bf00db/FLAG774c0ed62 [2019-11-06 18:36:17,927 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3ddaabc87/87965833356342aa8b45ed6189bf00db [2019-11-06 18:36:17,935 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-06 18:36:17,937 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-06 18:36:17,938 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-06 18:36:17,938 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-06 18:36:17,941 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-06 18:36:17,942 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 06:36:17" (1/1) ... [2019-11-06 18:36:17,945 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@574d774a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:36:17, skipping insertion in model container [2019-11-06 18:36:17,946 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 06:36:17" (1/1) ... [2019-11-06 18:36:17,953 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-06 18:36:17,975 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-06 18:36:18,236 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 18:36:18,248 INFO L188 MainTranslator]: Completed pre-run [2019-11-06 18:36:18,295 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 18:36:18,316 INFO L192 MainTranslator]: Completed translation [2019-11-06 18:36:18,317 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:36:18 WrapperNode [2019-11-06 18:36:18,317 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-06 18:36:18,318 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-06 18:36:18,319 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-06 18:36:18,319 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-06 18:36:18,411 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:36:18" (1/1) ... [2019-11-06 18:36:18,412 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:36:18" (1/1) ... [2019-11-06 18:36:18,421 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:36:18" (1/1) ... [2019-11-06 18:36:18,421 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:36:18" (1/1) ... [2019-11-06 18:36:18,431 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:36:18" (1/1) ... [2019-11-06 18:36:18,437 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:36:18" (1/1) ... [2019-11-06 18:36:18,439 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:36:18" (1/1) ... [2019-11-06 18:36:18,441 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-06 18:36:18,442 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-06 18:36:18,442 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-06 18:36:18,442 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-06 18:36:18,443 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:36:18" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 18:36:18,499 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-06 18:36:18,499 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-06 18:36:18,499 INFO L138 BoogieDeclarations]: Found implementation of procedure bor [2019-11-06 18:36:18,499 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-06 18:36:18,500 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-06 18:36:18,500 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-06 18:36:18,500 INFO L130 BoogieDeclarations]: Found specification of procedure bor [2019-11-06 18:36:18,500 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-06 18:36:18,500 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-06 18:36:18,500 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-06 18:36:18,500 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-06 18:36:18,500 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-06 18:36:18,501 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-06 18:36:18,501 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-06 18:36:18,808 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-06 18:36:18,808 INFO L284 CfgBuilder]: Removed 3 assume(true) statements. [2019-11-06 18:36:18,815 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 06:36:18 BoogieIcfgContainer [2019-11-06 18:36:18,815 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-06 18:36:18,816 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-06 18:36:18,817 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-06 18:36:18,820 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-06 18:36:18,820 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 06:36:17" (1/3) ... [2019-11-06 18:36:18,821 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77a200eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 06:36:18, skipping insertion in model container [2019-11-06 18:36:18,821 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:36:18" (2/3) ... [2019-11-06 18:36:18,821 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77a200eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 06:36:18, skipping insertion in model container [2019-11-06 18:36:18,821 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 06:36:18" (3/3) ... [2019-11-06 18:36:18,824 INFO L109 eAbstractionObserver]: Analyzing ICFG bor5.i [2019-11-06 18:36:18,834 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-06 18:36:18,844 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-06 18:36:18,856 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-06 18:36:18,890 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-06 18:36:18,890 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-06 18:36:18,890 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-06 18:36:18,890 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-06 18:36:18,890 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-06 18:36:18,890 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-06 18:36:18,891 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-06 18:36:18,891 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-06 18:36:18,906 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2019-11-06 18:36:18,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2019-11-06 18:36:18,912 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 18:36:18,913 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 18:36:18,914 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 18:36:18,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 18:36:18,919 INFO L82 PathProgramCache]: Analyzing trace with hash 1089041636, now seen corresponding path program 1 times [2019-11-06 18:36:18,928 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 18:36:18,929 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197302046] [2019-11-06 18:36:18,929 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 18:36:19,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 18:36:19,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 18:36:19,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 18:36:19,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 18:36:19,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 18:36:19,210 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-11-06 18:36:19,211 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197302046] [2019-11-06 18:36:19,211 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 18:36:19,212 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-06 18:36:19,213 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760415203] [2019-11-06 18:36:19,217 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-06 18:36:19,217 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 18:36:19,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-06 18:36:19,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-06 18:36:19,231 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 3 states. [2019-11-06 18:36:19,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 18:36:19,353 INFO L93 Difference]: Finished difference Result 57 states and 75 transitions. [2019-11-06 18:36:19,353 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-06 18:36:19,355 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 33 [2019-11-06 18:36:19,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 18:36:19,364 INFO L225 Difference]: With dead ends: 57 [2019-11-06 18:36:19,365 INFO L226 Difference]: Without dead ends: 27 [2019-11-06 18:36:19,369 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-06 18:36:19,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2019-11-06 18:36:19,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2019-11-06 18:36:19,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-11-06 18:36:19,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2019-11-06 18:36:19,425 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 33 [2019-11-06 18:36:19,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 18:36:19,425 INFO L462 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2019-11-06 18:36:19,426 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-06 18:36:19,426 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2019-11-06 18:36:19,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2019-11-06 18:36:19,428 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 18:36:19,429 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 18:36:19,429 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 18:36:19,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 18:36:19,430 INFO L82 PathProgramCache]: Analyzing trace with hash -1200270940, now seen corresponding path program 1 times [2019-11-06 18:36:19,430 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 18:36:19,430 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285666537] [2019-11-06 18:36:19,431 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 18:36:19,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 18:36:19,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 18:36:19,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 18:36:19,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 18:36:19,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 18:36:19,583 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-11-06 18:36:19,583 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285666537] [2019-11-06 18:36:19,584 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 18:36:19,584 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-06 18:36:19,584 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674720357] [2019-11-06 18:36:19,586 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 18:36:19,586 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 18:36:19,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 18:36:19,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-06 18:36:19,587 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand 4 states. [2019-11-06 18:36:19,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 18:36:19,698 INFO L93 Difference]: Finished difference Result 47 states and 55 transitions. [2019-11-06 18:36:19,699 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-06 18:36:19,699 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 33 [2019-11-06 18:36:19,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 18:36:19,700 INFO L225 Difference]: With dead ends: 47 [2019-11-06 18:36:19,700 INFO L226 Difference]: Without dead ends: 29 [2019-11-06 18:36:19,701 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-06 18:36:19,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-11-06 18:36:19,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2019-11-06 18:36:19,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-11-06 18:36:19,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2019-11-06 18:36:19,709 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 33 [2019-11-06 18:36:19,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 18:36:19,710 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2019-11-06 18:36:19,710 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 18:36:19,710 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2019-11-06 18:36:19,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2019-11-06 18:36:19,711 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 18:36:19,712 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 18:36:19,712 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 18:36:19,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 18:36:19,712 INFO L82 PathProgramCache]: Analyzing trace with hash 592534566, now seen corresponding path program 1 times [2019-11-06 18:36:19,713 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 18:36:19,713 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887864690] [2019-11-06 18:36:19,713 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 18:36:19,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 18:36:19,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 18:36:19,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 18:36:19,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 18:36:19,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 18:36:19,888 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-11-06 18:36:19,888 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887864690] [2019-11-06 18:36:19,889 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1216513461] [2019-11-06 18:36:19,889 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 [2019-11-06 18:36:19,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 18:36:19,999 INFO L256 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-06 18:36:20,007 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 18:36:20,082 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-11-06 18:36:20,082 INFO L218 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-06 18:36:20,082 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4] total 8 [2019-11-06 18:36:20,083 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739019223] [2019-11-06 18:36:20,083 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-06 18:36:20,084 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 18:36:20,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-06 18:36:20,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-11-06 18:36:20,084 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 8 states. [2019-11-06 18:36:20,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 18:36:20,305 INFO L93 Difference]: Finished difference Result 51 states and 63 transitions. [2019-11-06 18:36:20,305 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-06 18:36:20,305 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 35 [2019-11-06 18:36:20,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 18:36:20,306 INFO L225 Difference]: With dead ends: 51 [2019-11-06 18:36:20,307 INFO L226 Difference]: Without dead ends: 33 [2019-11-06 18:36:20,308 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2019-11-06 18:36:20,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2019-11-06 18:36:20,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 31. [2019-11-06 18:36:20,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-11-06 18:36:20,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2019-11-06 18:36:20,315 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 35 [2019-11-06 18:36:20,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 18:36:20,316 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2019-11-06 18:36:20,316 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-06 18:36:20,316 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2019-11-06 18:36:20,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2019-11-06 18:36:20,317 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 18:36:20,318 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 18:36:20,523 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 18:36:20,523 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 18:36:20,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 18:36:20,524 INFO L82 PathProgramCache]: Analyzing trace with hash 476203942, now seen corresponding path program 1 times [2019-11-06 18:36:20,524 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 18:36:20,525 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821199958] [2019-11-06 18:36:20,525 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 18:36:20,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 18:36:20,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 18:36:20,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 18:36:20,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 18:36:20,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 18:36:20,647 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-11-06 18:36:20,647 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821199958] [2019-11-06 18:36:20,648 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1782730321] [2019-11-06 18:36:20,648 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 18:36:20,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 18:36:20,737 INFO L256 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-06 18:36:20,741 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 18:36:20,776 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-11-06 18:36:20,776 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-06 18:36:20,776 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 7 [2019-11-06 18:36:20,777 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819423641] [2019-11-06 18:36:20,777 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 18:36:20,777 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 18:36:20,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 18:36:20,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2019-11-06 18:36:20,778 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand 4 states. [2019-11-06 18:36:20,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 18:36:20,820 INFO L93 Difference]: Finished difference Result 46 states and 51 transitions. [2019-11-06 18:36:20,820 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-06 18:36:20,821 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 43 [2019-11-06 18:36:20,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 18:36:20,822 INFO L225 Difference]: With dead ends: 46 [2019-11-06 18:36:20,822 INFO L226 Difference]: Without dead ends: 33 [2019-11-06 18:36:20,823 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2019-11-06 18:36:20,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2019-11-06 18:36:20,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 32. [2019-11-06 18:36:20,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2019-11-06 18:36:20,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2019-11-06 18:36:20,830 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 43 [2019-11-06 18:36:20,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 18:36:20,832 INFO L462 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2019-11-06 18:36:20,832 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 18:36:20,832 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2019-11-06 18:36:20,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2019-11-06 18:36:20,833 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 18:36:20,834 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 18:36:21,037 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 18:36:21,037 INFO L410 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 18:36:21,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 18:36:21,038 INFO L82 PathProgramCache]: Analyzing trace with hash -106794812, now seen corresponding path program 1 times [2019-11-06 18:36:21,038 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 18:36:21,038 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501089447] [2019-11-06 18:36:21,039 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 18:36:21,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-06 18:36:21,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-06 18:36:21,206 INFO L172 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-06 18:36:21,206 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-06 18:36:21,294 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 06:36:21 BoogieIcfgContainer [2019-11-06 18:36:21,294 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-06 18:36:21,298 INFO L168 Benchmark]: Toolchain (without parser) took 3359.30 ms. Allocated memory was 138.4 MB in the beginning and 234.4 MB in the end (delta: 95.9 MB). Free memory was 103.3 MB in the beginning and 121.9 MB in the end (delta: -18.6 MB). Peak memory consumption was 77.3 MB. Max. memory is 7.1 GB. [2019-11-06 18:36:21,300 INFO L168 Benchmark]: CDTParser took 0.47 ms. Allocated memory is still 138.4 MB. Free memory was 121.6 MB in the beginning and 121.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-11-06 18:36:21,302 INFO L168 Benchmark]: CACSL2BoogieTranslator took 380.12 ms. Allocated memory is still 138.4 MB. Free memory was 103.0 MB in the beginning and 92.4 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2019-11-06 18:36:21,304 INFO L168 Benchmark]: Boogie Preprocessor took 123.12 ms. Allocated memory was 138.4 MB in the beginning and 201.3 MB in the end (delta: 62.9 MB). Free memory was 92.4 MB in the beginning and 179.0 MB in the end (delta: -86.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. [2019-11-06 18:36:21,309 INFO L168 Benchmark]: RCFGBuilder took 373.91 ms. Allocated memory is still 201.3 MB. Free memory was 179.0 MB in the beginning and 161.8 MB in the end (delta: 17.2 MB). Peak memory consumption was 17.2 MB. Max. memory is 7.1 GB. [2019-11-06 18:36:21,310 INFO L168 Benchmark]: TraceAbstraction took 2477.62 ms. Allocated memory was 201.3 MB in the beginning and 234.4 MB in the end (delta: 33.0 MB). Free memory was 161.8 MB in the beginning and 121.9 MB in the end (delta: 39.9 MB). Peak memory consumption was 72.9 MB. Max. memory is 7.1 GB. [2019-11-06 18:36:21,322 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.47 ms. Allocated memory is still 138.4 MB. Free memory was 121.6 MB in the beginning and 121.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 380.12 ms. Allocated memory is still 138.4 MB. Free memory was 103.0 MB in the beginning and 92.4 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 123.12 ms. Allocated memory was 138.4 MB in the beginning and 201.3 MB in the end (delta: 62.9 MB). Free memory was 92.4 MB in the beginning and 179.0 MB in the end (delta: -86.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 373.91 ms. Allocated memory is still 201.3 MB. Free memory was 179.0 MB in the beginning and 161.8 MB in the end (delta: 17.2 MB). Peak memory consumption was 17.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2477.62 ms. Allocated memory was 201.3 MB in the beginning and 234.4 MB in the end (delta: 33.0 MB). Free memory was 161.8 MB in the beginning and 121.9 MB in the end (delta: 39.9 MB). Peak memory consumption was 72.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 46]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 14. Possible FailurePath: [L6] int N; VAL [\old(N)=10, N=0] [L21] N = __VERIFIER_nondet_int() [L22] COND TRUE N > 1 [L23] int x[N]; [L24] int temp; [L25] int ret; [L26] int ret2; [L27] int ret5; [L29] int i = 0; VAL [\old(N)=0, i=0, N=2, x={1:0}] [L29] COND TRUE i < N [L31] x[i] = __VERIFIER_nondet_int() [L29] i++ VAL [\old(N)=0, i=1, N=2, x={1:0}] [L29] COND TRUE i < N [L31] x[i] = __VERIFIER_nondet_int() [L29] i++ VAL [\old(N)=0, i=2, N=2, x={1:0}] [L29] COND FALSE !(i < N) VAL [\old(N)=0, i=2, N=2, x={1:0}] [L34] CALL, EXPR bor(x) VAL [\old(N)=0, N=2, x={1:0}] [L10] int i; [L11] long long res; [L12] EXPR x[0] [L12] res = x[0] [L13] i = 1 VAL [\old(N)=0, i=1, N=2, res=0, x={1:0}, x={1:0}] [L13] COND TRUE i < N [L14] EXPR x[i] [L14] res = res | x[i] [L13] i++ VAL [\old(N)=0, i=2, N=2, x={1:0}, x={1:0}] [L13] COND FALSE !(i < N) VAL [\old(N)=0, i=2, N=2, x={1:0}, x={1:0}] [L16] return res; VAL [\old(N)=0, \result=-2, i=2, N=2, res=4294967294, x={1:0}, x={1:0}] [L34] RET, EXPR bor(x) VAL [\old(N)=0, bor(x)=-2, i=2, N=2, x={1:0}] [L34] ret = bor(x) [L36] EXPR x[0] [L36] temp=x[0] [L36] EXPR x[1] [L36] x[0] = x[1] [L36] x[1] = temp VAL [\old(N)=0, i=2, N=2, ret=-2, temp=0, x={1:0}] [L37] CALL, EXPR bor(x) VAL [\old(N)=0, N=2, x={1:0}] [L10] int i; [L11] long long res; [L12] EXPR x[0] [L12] res = x[0] [L13] i = 1 VAL [\old(N)=0, i=1, N=2, res=0, x={1:0}, x={1:0}] [L13] COND TRUE i < N [L14] EXPR x[i] [L14] res = res | x[i] [L13] i++ VAL [\old(N)=0, i=2, N=2, x={1:0}, x={1:0}] [L13] COND FALSE !(i < N) VAL [\old(N)=0, i=2, N=2, x={1:0}, x={1:0}] [L16] return res; VAL [\old(N)=0, \result=-3, i=2, N=2, res=4294967293, x={1:0}, x={1:0}] [L37] RET, EXPR bor(x) VAL [\old(N)=0, bor(x)=-3, i=2, N=2, ret=-2, temp=0, x={1:0}] [L37] ret2 = bor(x) [L38] EXPR x[0] [L38] temp=x[0] [L39] int i =0 ; VAL [\old(N)=0, i=2, i=0, N=2, ret=-2, ret2=-3, temp=0, x={1:0}] [L39] COND TRUE i