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/loops/string-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 19:17:42,694 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 19:17:42,697 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 19:17:42,714 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 19:17:42,714 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 19:17:42,715 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 19:17:42,717 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 19:17:42,719 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 19:17:42,732 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 19:17:42,733 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 19:17:42,735 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 19:17:42,736 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 19:17:42,737 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 19:17:42,740 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 19:17:42,741 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 19:17:42,742 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 19:17:42,745 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 19:17:42,748 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 19:17:42,752 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 19:17:42,756 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 19:17:42,761 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 19:17:42,762 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 19:17:42,765 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 19:17:42,766 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 19:17:42,769 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 19:17:42,770 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 19:17:42,770 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 19:17:42,772 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 19:17:42,773 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 19:17:42,775 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 19:17:42,775 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 19:17:42,778 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 19:17:42,779 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 19:17:42,780 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 19:17:42,782 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 19:17:42,782 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 19:17:42,783 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 19:17:42,783 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 19:17:42,783 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 19:17:42,787 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 19:17:42,789 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 19:17:42,790 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 [2019-10-13 19:17:42,810 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 19:17:42,810 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 19:17:42,812 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 19:17:42,812 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 19:17:42,812 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 19:17:42,813 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 19:17:42,813 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 19:17:42,813 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 19:17:42,813 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 19:17:42,813 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 19:17:42,815 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 19:17:42,815 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 19:17:42,815 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 19:17:42,815 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 19:17:42,816 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 19:17:42,816 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 19:17:42,816 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 19:17:42,816 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 19:17:42,817 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 19:17:42,817 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 19:17:42,817 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 19:17:42,817 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 19:17:42,817 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 19:17:42,818 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 19:17:42,818 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 19:17:42,818 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 19:17:42,818 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 19:17:42,819 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 19:17:42,819 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-13 19:17:43,091 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 19:17:43,109 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 19:17:43,113 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 19:17:43,114 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 19:17:43,114 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 19:17:43,115 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/string-1.i [2019-10-13 19:17:43,183 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/158915516/a052382e425040dd9135fac1cedb6544/FLAG08df9c2c3 [2019-10-13 19:17:43,631 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 19:17:43,632 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/string-1.i [2019-10-13 19:17:43,642 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/158915516/a052382e425040dd9135fac1cedb6544/FLAG08df9c2c3 [2019-10-13 19:17:44,007 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/158915516/a052382e425040dd9135fac1cedb6544 [2019-10-13 19:17:44,018 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 19:17:44,020 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 19:17:44,021 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 19:17:44,021 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 19:17:44,025 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 19:17:44,026 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:17:44" (1/1) ... [2019-10-13 19:17:44,029 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31b0106d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:17:44, skipping insertion in model container [2019-10-13 19:17:44,029 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:17:44" (1/1) ... [2019-10-13 19:17:44,037 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 19:17:44,065 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 19:17:44,306 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:17:44,310 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 19:17:44,338 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:17:44,443 INFO L192 MainTranslator]: Completed translation [2019-10-13 19:17:44,444 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:17:44 WrapperNode [2019-10-13 19:17:44,445 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 19:17:44,446 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 19:17:44,446 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 19:17:44,446 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 19:17:44,459 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:17:44" (1/1) ... [2019-10-13 19:17:44,460 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:17:44" (1/1) ... [2019-10-13 19:17:44,468 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:17:44" (1/1) ... [2019-10-13 19:17:44,470 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:17:44" (1/1) ... [2019-10-13 19:17:44,486 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:17:44" (1/1) ... [2019-10-13 19:17:44,492 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:17:44" (1/1) ... [2019-10-13 19:17:44,494 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:17:44" (1/1) ... [2019-10-13 19:17:44,497 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 19:17:44,497 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 19:17:44,497 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 19:17:44,498 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 19:17:44,499 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:17:44" (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 [2019-10-13 19:17:44,563 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 19:17:44,563 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 19:17:44,563 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-13 19:17:44,563 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 19:17:44,563 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 19:17:44,564 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-13 19:17:44,564 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-13 19:17:44,564 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2019-10-13 19:17:44,564 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 19:17:44,564 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 19:17:44,564 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 19:17:44,564 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 19:17:44,564 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 19:17:44,565 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 19:17:44,565 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 19:17:44,941 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 19:17:44,942 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-10-13 19:17:44,943 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:17:44 BoogieIcfgContainer [2019-10-13 19:17:44,943 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 19:17:44,944 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 19:17:44,944 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 19:17:44,947 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 19:17:44,948 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:17:44" (1/3) ... [2019-10-13 19:17:44,948 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18b62795 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:17:44, skipping insertion in model container [2019-10-13 19:17:44,949 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:17:44" (2/3) ... [2019-10-13 19:17:44,949 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18b62795 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:17:44, skipping insertion in model container [2019-10-13 19:17:44,949 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:17:44" (3/3) ... [2019-10-13 19:17:44,951 INFO L109 eAbstractionObserver]: Analyzing ICFG string-1.i [2019-10-13 19:17:44,961 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 19:17:44,968 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 19:17:44,980 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 19:17:45,006 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 19:17:45,007 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 19:17:45,007 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 19:17:45,007 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 19:17:45,007 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 19:17:45,007 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 19:17:45,007 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 19:17:45,008 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 19:17:45,024 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2019-10-13 19:17:45,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-10-13 19:17:45,030 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:17:45,031 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:17:45,033 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:17:45,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:17:45,038 INFO L82 PathProgramCache]: Analyzing trace with hash -99599224, now seen corresponding path program 1 times [2019-10-13 19:17:45,044 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:17:45,045 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421580533] [2019-10-13 19:17:45,045 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:17:45,045 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:17:45,045 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:17:45,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:17:45,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:17:45,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:17:45,205 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421580533] [2019-10-13 19:17:45,206 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:17:45,206 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 19:17:45,207 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305053782] [2019-10-13 19:17:45,211 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 19:17:45,212 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:17:45,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 19:17:45,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 19:17:45,230 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 3 states. [2019-10-13 19:17:45,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:17:45,376 INFO L93 Difference]: Finished difference Result 62 states and 89 transitions. [2019-10-13 19:17:45,377 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 19:17:45,379 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2019-10-13 19:17:45,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:17:45,388 INFO L225 Difference]: With dead ends: 62 [2019-10-13 19:17:45,388 INFO L226 Difference]: Without dead ends: 28 [2019-10-13 19:17:45,392 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 19:17:45,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2019-10-13 19:17:45,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2019-10-13 19:17:45,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-10-13 19:17:45,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 33 transitions. [2019-10-13 19:17:45,437 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 33 transitions. Word has length 22 [2019-10-13 19:17:45,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:17:45,438 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 33 transitions. [2019-10-13 19:17:45,438 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 19:17:45,439 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 33 transitions. [2019-10-13 19:17:45,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-10-13 19:17:45,440 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:17:45,440 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:17:45,440 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:17:45,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:17:45,441 INFO L82 PathProgramCache]: Analyzing trace with hash 930552028, now seen corresponding path program 1 times [2019-10-13 19:17:45,441 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:17:45,441 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042516678] [2019-10-13 19:17:45,442 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:17:45,442 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:17:45,442 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:17:45,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:17:45,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:17:45,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:17:45,529 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042516678] [2019-10-13 19:17:45,530 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:17:45,530 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 19:17:45,530 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570350187] [2019-10-13 19:17:45,532 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:17:45,532 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:17:45,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:17:45,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 19:17:45,533 INFO L87 Difference]: Start difference. First operand 28 states and 33 transitions. Second operand 4 states. [2019-10-13 19:17:45,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:17:45,681 INFO L93 Difference]: Finished difference Result 56 states and 69 transitions. [2019-10-13 19:17:45,681 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 19:17:45,681 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2019-10-13 19:17:45,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:17:45,685 INFO L225 Difference]: With dead ends: 56 [2019-10-13 19:17:45,685 INFO L226 Difference]: Without dead ends: 36 [2019-10-13 19:17:45,687 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 19:17:45,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2019-10-13 19:17:45,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 30. [2019-10-13 19:17:45,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-10-13 19:17:45,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 35 transitions. [2019-10-13 19:17:45,707 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 35 transitions. Word has length 24 [2019-10-13 19:17:45,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:17:45,708 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 35 transitions. [2019-10-13 19:17:45,708 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:17:45,708 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2019-10-13 19:17:45,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2019-10-13 19:17:45,709 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:17:45,711 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:17:45,711 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:17:45,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:17:45,713 INFO L82 PathProgramCache]: Analyzing trace with hash 1358146588, now seen corresponding path program 1 times [2019-10-13 19:17:45,713 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:17:45,713 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314783180] [2019-10-13 19:17:45,714 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:17:45,714 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:17:45,714 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:17:45,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:17:45,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:17:45,878 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-13 19:17:45,879 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314783180] [2019-10-13 19:17:45,879 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1034419924] [2019-10-13 19:17:45,882 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 [2019-10-13 19:17:45,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:17:45,959 INFO L256 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 19:17:45,967 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:17:46,009 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-13 19:17:46,010 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-13 19:17:46,010 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 6 [2019-10-13 19:17:46,012 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260525843] [2019-10-13 19:17:46,019 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 19:17:46,019 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:17:46,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 19:17:46,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-13 19:17:46,020 INFO L87 Difference]: Start difference. First operand 30 states and 35 transitions. Second operand 6 states. [2019-10-13 19:17:46,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:17:46,181 INFO L93 Difference]: Finished difference Result 65 states and 80 transitions. [2019-10-13 19:17:46,182 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 19:17:46,182 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 28 [2019-10-13 19:17:46,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:17:46,183 INFO L225 Difference]: With dead ends: 65 [2019-10-13 19:17:46,183 INFO L226 Difference]: Without dead ends: 44 [2019-10-13 19:17:46,184 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-13 19:17:46,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2019-10-13 19:17:46,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 34. [2019-10-13 19:17:46,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-10-13 19:17:46,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 39 transitions. [2019-10-13 19:17:46,198 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 39 transitions. Word has length 28 [2019-10-13 19:17:46,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:17:46,199 INFO L462 AbstractCegarLoop]: Abstraction has 34 states and 39 transitions. [2019-10-13 19:17:46,199 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 19:17:46,199 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 39 transitions. [2019-10-13 19:17:46,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-10-13 19:17:46,200 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:17:46,205 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 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, 1] [2019-10-13 19:17:46,409 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:17:46,410 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:17:46,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:17:46,411 INFO L82 PathProgramCache]: Analyzing trace with hash -1752396196, now seen corresponding path program 2 times [2019-10-13 19:17:46,411 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:17:46,412 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533718250] [2019-10-13 19:17:46,412 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:17:46,412 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:17:46,412 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:17:46,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:17:46,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:17:46,502 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-13 19:17:46,502 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533718250] [2019-10-13 19:17:46,503 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [177398669] [2019-10-13 19:17:46,503 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 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 [2019-10-13 19:17:46,550 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2019-10-13 19:17:46,550 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-13 19:17:46,551 INFO L256 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 10 conjunts are in the unsatisfiable core [2019-10-13 19:17:46,553 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:17:46,582 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 19:17:46,630 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-10-13 19:17:46,631 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:17:46,631 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2019-10-13 19:17:46,632 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974738725] [2019-10-13 19:17:46,633 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 19:17:46,633 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:17:46,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 19:17:46,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2019-10-13 19:17:46,634 INFO L87 Difference]: Start difference. First operand 34 states and 39 transitions. Second operand 7 states. [2019-10-13 19:17:46,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:17:46,729 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2019-10-13 19:17:46,730 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 19:17:46,730 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 32 [2019-10-13 19:17:46,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:17:46,731 INFO L225 Difference]: With dead ends: 50 [2019-10-13 19:17:46,731 INFO L226 Difference]: Without dead ends: 36 [2019-10-13 19:17:46,732 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2019-10-13 19:17:46,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2019-10-13 19:17:46,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2019-10-13 19:17:46,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2019-10-13 19:17:46,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 41 transitions. [2019-10-13 19:17:46,741 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 41 transitions. Word has length 32 [2019-10-13 19:17:46,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:17:46,742 INFO L462 AbstractCegarLoop]: Abstraction has 36 states and 41 transitions. [2019-10-13 19:17:46,742 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 19:17:46,742 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 41 transitions. [2019-10-13 19:17:46,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2019-10-13 19:17:46,743 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:17:46,743 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 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, 1] [2019-10-13 19:17:46,946 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:17:46,947 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:17:46,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:17:46,948 INFO L82 PathProgramCache]: Analyzing trace with hash 1002288759, now seen corresponding path program 1 times [2019-10-13 19:17:46,948 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:17:46,948 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857436405] [2019-10-13 19:17:46,949 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:17:46,949 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:17:46,949 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:17:46,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:17:47,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:17:47,065 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-13 19:17:47,065 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857436405] [2019-10-13 19:17:47,066 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1990341515] [2019-10-13 19:17:47,066 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:17:47,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:17:47,114 INFO L256 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-13 19:17:47,116 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:17:47,132 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-13 19:17:47,132 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-13 19:17:47,133 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 7 [2019-10-13 19:17:47,133 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571072310] [2019-10-13 19:17:47,133 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 19:17:47,134 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:17:47,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 19:17:47,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-10-13 19:17:47,134 INFO L87 Difference]: Start difference. First operand 36 states and 41 transitions. Second operand 7 states. [2019-10-13 19:17:47,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:17:47,319 INFO L93 Difference]: Finished difference Result 79 states and 96 transitions. [2019-10-13 19:17:47,323 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-13 19:17:47,323 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 34 [2019-10-13 19:17:47,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:17:47,325 INFO L225 Difference]: With dead ends: 79 [2019-10-13 19:17:47,325 INFO L226 Difference]: Without dead ends: 54 [2019-10-13 19:17:47,328 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-10-13 19:17:47,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2019-10-13 19:17:47,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 40. [2019-10-13 19:17:47,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2019-10-13 19:17:47,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 45 transitions. [2019-10-13 19:17:47,338 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 45 transitions. Word has length 34 [2019-10-13 19:17:47,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:17:47,338 INFO L462 AbstractCegarLoop]: Abstraction has 40 states and 45 transitions. [2019-10-13 19:17:47,340 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 19:17:47,340 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 45 transitions. [2019-10-13 19:17:47,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-10-13 19:17:47,341 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:17:47,342 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:17:47,543 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:17:47,543 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:17:47,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:17:47,544 INFO L82 PathProgramCache]: Analyzing trace with hash 515659703, now seen corresponding path program 2 times [2019-10-13 19:17:47,544 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:17:47,544 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937448246] [2019-10-13 19:17:47,544 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:17:47,544 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:17:47,545 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:17:47,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:17:47,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:17:47,617 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2019-10-13 19:17:47,618 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937448246] [2019-10-13 19:17:47,618 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [329325046] [2019-10-13 19:17:47,618 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:17:47,668 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2019-10-13 19:17:47,668 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-13 19:17:47,669 INFO L256 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 10 conjunts are in the unsatisfiable core [2019-10-13 19:17:47,674 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:17:47,700 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 19:17:47,725 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-10-13 19:17:47,725 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:17:47,725 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2019-10-13 19:17:47,726 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403132707] [2019-10-13 19:17:47,726 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 19:17:47,727 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:17:47,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 19:17:47,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2019-10-13 19:17:47,727 INFO L87 Difference]: Start difference. First operand 40 states and 45 transitions. Second operand 5 states. [2019-10-13 19:17:47,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:17:47,750 INFO L93 Difference]: Finished difference Result 40 states and 45 transitions. [2019-10-13 19:17:47,751 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 19:17:47,751 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 38 [2019-10-13 19:17:47,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:17:47,751 INFO L225 Difference]: With dead ends: 40 [2019-10-13 19:17:47,751 INFO L226 Difference]: Without dead ends: 0 [2019-10-13 19:17:47,752 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2019-10-13 19:17:47,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-13 19:17:47,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-13 19:17:47,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-13 19:17:47,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-13 19:17:47,753 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 38 [2019-10-13 19:17:47,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:17:47,754 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-13 19:17:47,754 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 19:17:47,754 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-13 19:17:47,754 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-13 19:17:47,958 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:17:47,963 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-13 19:17:48,043 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2019-10-13 19:17:48,044 INFO L439 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-13 19:17:48,044 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-10-13 19:17:48,044 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-13 19:17:48,044 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-10-13 19:17:48,044 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-10-13 19:17:48,044 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-13 19:17:48,045 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 14 58) no Hoare annotation was computed. [2019-10-13 19:17:48,045 INFO L443 ceAbstractionStarter]: For program point L23-2(lines 23 24) no Hoare annotation was computed. [2019-10-13 19:17:48,045 INFO L439 ceAbstractionStarter]: At program point L23-3(lines 23 24) the Hoare annotation is: (or (= 0 main_~found~0) (= 1 main_~found~0)) [2019-10-13 19:17:48,045 INFO L443 ceAbstractionStarter]: For program point L23-4(lines 23 24) no Hoare annotation was computed. [2019-10-13 19:17:48,045 INFO L443 ceAbstractionStarter]: For program point L19-2(lines 19 20) no Hoare annotation was computed. [2019-10-13 19:17:48,045 INFO L439 ceAbstractionStarter]: At program point L19-3(lines 19 20) the Hoare annotation is: (or (= 0 main_~found~0) (= 1 main_~found~0)) [2019-10-13 19:17:48,045 INFO L443 ceAbstractionStarter]: For program point L19-4(lines 19 20) no Hoare annotation was computed. [2019-10-13 19:17:48,045 INFO L443 ceAbstractionStarter]: For program point L32-1(lines 32 33) no Hoare annotation was computed. [2019-10-13 19:17:48,046 INFO L439 ceAbstractionStarter]: At program point L32-3(lines 32 33) the Hoare annotation is: (or (= 0 main_~found~0) (= 1 main_~found~0)) [2019-10-13 19:17:48,046 INFO L443 ceAbstractionStarter]: For program point L32-4(lines 15 58) no Hoare annotation was computed. [2019-10-13 19:17:48,046 INFO L443 ceAbstractionStarter]: For program point L28-1(lines 28 29) no Hoare annotation was computed. [2019-10-13 19:17:48,046 INFO L439 ceAbstractionStarter]: At program point L28-3(lines 28 29) the Hoare annotation is: (or (= 0 main_~found~0) (= 1 main_~found~0)) [2019-10-13 19:17:48,046 INFO L443 ceAbstractionStarter]: For program point L28-4(lines 28 29) no Hoare annotation was computed. [2019-10-13 19:17:48,047 INFO L443 ceAbstractionStarter]: For program point L41(lines 41 50) no Hoare annotation was computed. [2019-10-13 19:17:48,047 INFO L439 ceAbstractionStarter]: At program point L41-2(lines 39 51) the Hoare annotation is: (or (= 0 main_~found~0) (= 1 main_~found~0) (and (<= 0 main_~j~0) (<= main_~nc_B~0 0))) [2019-10-13 19:17:48,047 INFO L443 ceAbstractionStarter]: For program point L25(line 25) no Hoare annotation was computed. [2019-10-13 19:17:48,047 INFO L443 ceAbstractionStarter]: For program point L21(line 21) no Hoare annotation was computed. [2019-10-13 19:17:48,047 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 14 58) no Hoare annotation was computed. [2019-10-13 19:17:48,048 INFO L439 ceAbstractionStarter]: At program point mainENTRY(lines 14 58) the Hoare annotation is: (= |#valid| |old(#valid)|) [2019-10-13 19:17:48,048 INFO L439 ceAbstractionStarter]: At program point L55(line 55) the Hoare annotation is: (or (= 0 main_~found~0) (= 1 main_~found~0)) [2019-10-13 19:17:48,048 INFO L443 ceAbstractionStarter]: For program point L55-1(line 55) no Hoare annotation was computed. [2019-10-13 19:17:48,048 INFO L443 ceAbstractionStarter]: For program point L39-2(lines 39 51) no Hoare annotation was computed. [2019-10-13 19:17:48,048 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 6) no Hoare annotation was computed. [2019-10-13 19:17:48,049 INFO L446 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 4 9) the Hoare annotation is: true [2019-10-13 19:17:48,049 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 4 9) no Hoare annotation was computed. [2019-10-13 19:17:48,049 INFO L443 ceAbstractionStarter]: For program point L6(line 6) no Hoare annotation was computed. [2019-10-13 19:17:48,049 INFO L443 ceAbstractionStarter]: For program point L5(lines 5 7) no Hoare annotation was computed. [2019-10-13 19:17:48,049 INFO L443 ceAbstractionStarter]: For program point L5-2(lines 4 9) no Hoare annotation was computed. [2019-10-13 19:17:48,066 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 07:17:48 BoogieIcfgContainer [2019-10-13 19:17:48,066 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-13 19:17:48,069 INFO L168 Benchmark]: Toolchain (without parser) took 4048.02 ms. Allocated memory was 138.9 MB in the beginning and 234.9 MB in the end (delta: 95.9 MB). Free memory was 103.9 MB in the beginning and 82.6 MB in the end (delta: 21.2 MB). Peak memory consumption was 117.2 MB. Max. memory is 7.1 GB. [2019-10-13 19:17:48,070 INFO L168 Benchmark]: CDTParser took 0.44 ms. Allocated memory is still 138.9 MB. Free memory was 122.2 MB in the beginning and 122.0 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2019-10-13 19:17:48,071 INFO L168 Benchmark]: CACSL2BoogieTranslator took 424.29 ms. Allocated memory was 138.9 MB in the beginning and 201.3 MB in the end (delta: 62.4 MB). Free memory was 103.7 MB in the beginning and 180.0 MB in the end (delta: -76.3 MB). Peak memory consumption was 23.4 MB. Max. memory is 7.1 GB. [2019-10-13 19:17:48,072 INFO L168 Benchmark]: Boogie Preprocessor took 51.10 ms. Allocated memory is still 201.3 MB. Free memory was 180.0 MB in the beginning and 177.7 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. [2019-10-13 19:17:48,073 INFO L168 Benchmark]: RCFGBuilder took 445.81 ms. Allocated memory is still 201.3 MB. Free memory was 177.7 MB in the beginning and 159.6 MB in the end (delta: 18.1 MB). Peak memory consumption was 18.1 MB. Max. memory is 7.1 GB. [2019-10-13 19:17:48,075 INFO L168 Benchmark]: TraceAbstraction took 3122.06 ms. Allocated memory was 201.3 MB in the beginning and 234.9 MB in the end (delta: 33.6 MB). Free memory was 159.6 MB in the beginning and 82.6 MB in the end (delta: 77.0 MB). Peak memory consumption was 110.5 MB. Max. memory is 7.1 GB. [2019-10-13 19:17:48,080 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.44 ms. Allocated memory is still 138.9 MB. Free memory was 122.2 MB in the beginning and 122.0 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 424.29 ms. Allocated memory was 138.9 MB in the beginning and 201.3 MB in the end (delta: 62.4 MB). Free memory was 103.7 MB in the beginning and 180.0 MB in the end (delta: -76.3 MB). Peak memory consumption was 23.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 51.10 ms. Allocated memory is still 201.3 MB. Free memory was 180.0 MB in the beginning and 177.7 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 445.81 ms. Allocated memory is still 201.3 MB. Free memory was 177.7 MB in the beginning and 159.6 MB in the end (delta: 18.1 MB). Peak memory consumption was 18.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3122.06 ms. Allocated memory was 201.3 MB in the beginning and 234.9 MB in the end (delta: 33.6 MB). Free memory was 159.6 MB in the beginning and 82.6 MB in the end (delta: 77.0 MB). Peak memory consumption was 110.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 6]: 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: 39]: Loop Invariant Derived loop invariant: (0 == found || 1 == found) || (0 <= j && nc_B <= 0) - InvariantResult [Line: 32]: Loop Invariant Derived loop invariant: 0 == found || 1 == found - InvariantResult [Line: 28]: Loop Invariant Derived loop invariant: 0 == found || 1 == found - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: 0 == found || 1 == found - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: 0 == found || 1 == found - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 35 locations, 1 error locations. Result: SAFE, OverallTime: 3.0s, OverallIterations: 6, TraceHistogramMax: 3, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 167 SDtfs, 74 SDslu, 277 SDs, 0 SdLazy, 278 SolverSat, 29 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 168 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=40occurred in iteration=5, 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, 6 MinimizatonAttempts, 30 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 11 LocationsWithAnnotation, 17 PreInvPairs, 31 NumberOfFragments, 65 HoareAnnotationTreeSize, 17 FomulaSimplifications, 87 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 11 FomulaSimplificationsInter, 24 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 310 NumberOfCodeBlocks, 288 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 300 ConstructedInterpolants, 0 QuantifiedInterpolants, 13786 SizeOfPredicates, 12 NumberOfNonLiveVariables, 385 ConjunctsInSsa, 27 ConjunctsInUnsatCore, 10 InterpolantComputations, 4 PerfectInterpolantSequences, 57/80 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...