/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 --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=DEEPEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive-simple/id2_b5_o10.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 21:05:57,798 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 21:05:57,801 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 21:05:57,841 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 21:05:57,841 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 21:05:57,849 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 21:05:57,852 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 21:05:57,855 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 21:05:57,857 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 21:05:57,860 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 21:05:57,860 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 21:05:57,861 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 21:05:57,861 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 21:05:57,864 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 21:05:57,866 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 21:05:57,868 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 21:05:57,869 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 21:05:57,871 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 21:05:57,872 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 21:05:57,880 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 21:05:57,881 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 21:05:57,884 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 21:05:57,884 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 21:05:57,885 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 21:05:57,897 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 21:05:57,897 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 21:05:57,897 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 21:05:57,898 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 21:05:57,899 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 21:05:57,900 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 21:05:57,901 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 21:05:57,901 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 21:05:57,902 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 21:05:57,902 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 21:05:57,904 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 21:05:57,904 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 21:05:57,905 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 21:05:57,905 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 21:05:57,905 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 21:05:57,906 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 21:05:57,907 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 21:05:57,908 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-18 21:05:57,947 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 21:05:57,948 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 21:05:57,949 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 21:05:57,950 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 21:05:57,950 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 21:05:57,950 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 21:05:57,950 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 21:05:57,951 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 21:05:57,951 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 21:05:57,951 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 21:05:57,952 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 21:05:57,952 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 21:05:57,952 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 21:05:57,953 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 21:05:57,953 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 21:05:57,953 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 21:05:57,953 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 21:05:57,953 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 21:05:57,954 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 21:05:57,954 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 21:05:57,954 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 21:05:57,954 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 21:05:57,954 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 21:05:57,954 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 21:05:57,955 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 21:05:57,955 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 21:05:57,955 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 21:05:57,955 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 21:05:57,955 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 21:05:57,956 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=DEEPEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=DEEPEST; [2020-08-18 21:05:58,267 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 21:05:58,285 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 21:05:58,291 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 21:05:58,292 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 21:05:58,293 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 21:05:58,294 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/id2_b5_o10.c [2020-08-18 21:05:58,356 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/98f7e871f/1b4225fccb2d478ca51e7657d154b04d/FLAG2c409720d [2020-08-18 21:05:58,766 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 21:05:58,767 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/id2_b5_o10.c [2020-08-18 21:05:58,772 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/98f7e871f/1b4225fccb2d478ca51e7657d154b04d/FLAG2c409720d [2020-08-18 21:05:59,177 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/98f7e871f/1b4225fccb2d478ca51e7657d154b04d [2020-08-18 21:05:59,188 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 21:05:59,189 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 21:05:59,190 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 21:05:59,191 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 21:05:59,194 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 21:05:59,195 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 09:05:59" (1/1) ... [2020-08-18 21:05:59,197 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1190dd1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:05:59, skipping insertion in model container [2020-08-18 21:05:59,198 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 09:05:59" (1/1) ... [2020-08-18 21:05:59,205 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 21:05:59,221 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 21:05:59,444 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 21:05:59,452 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 21:05:59,473 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 21:05:59,490 INFO L208 MainTranslator]: Completed translation [2020-08-18 21:05:59,492 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:05:59 WrapperNode [2020-08-18 21:05:59,493 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 21:05:59,494 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 21:05:59,494 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 21:05:59,494 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 21:05:59,508 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:05:59" (1/1) ... [2020-08-18 21:05:59,510 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:05:59" (1/1) ... [2020-08-18 21:05:59,612 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:05:59" (1/1) ... [2020-08-18 21:05:59,613 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:05:59" (1/1) ... [2020-08-18 21:05:59,618 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:05:59" (1/1) ... [2020-08-18 21:05:59,622 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:05:59" (1/1) ... [2020-08-18 21:05:59,623 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:05:59" (1/1) ... [2020-08-18 21:05:59,627 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 21:05:59,627 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 21:05:59,627 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 21:05:59,628 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 21:05:59,628 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:05:59" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-08-18 21:05:59,682 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 21:05:59,682 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 21:05:59,682 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2020-08-18 21:05:59,682 INFO L138 BoogieDeclarations]: Found implementation of procedure id2 [2020-08-18 21:05:59,682 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 21:05:59,683 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-08-18 21:05:59,683 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 21:05:59,683 INFO L130 BoogieDeclarations]: Found specification of procedure id [2020-08-18 21:05:59,683 INFO L130 BoogieDeclarations]: Found specification of procedure id2 [2020-08-18 21:05:59,683 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 21:05:59,683 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 21:05:59,684 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 21:05:59,854 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 21:05:59,854 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-18 21:05:59,857 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 09:05:59 BoogieIcfgContainer [2020-08-18 21:05:59,858 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 21:05:59,859 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 21:05:59,859 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 21:05:59,862 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 21:05:59,863 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 09:05:59" (1/3) ... [2020-08-18 21:05:59,864 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1adf3fd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 09:05:59, skipping insertion in model container [2020-08-18 21:05:59,864 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:05:59" (2/3) ... [2020-08-18 21:05:59,864 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1adf3fd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 09:05:59, skipping insertion in model container [2020-08-18 21:05:59,864 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 09:05:59" (3/3) ... [2020-08-18 21:05:59,866 INFO L109 eAbstractionObserver]: Analyzing ICFG id2_b5_o10.c [2020-08-18 21:05:59,877 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 21:05:59,884 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 21:05:59,902 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 21:05:59,929 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 21:05:59,929 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 21:05:59,930 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 21:05:59,930 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 21:05:59,930 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 21:05:59,931 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 21:05:59,931 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 21:05:59,931 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 21:05:59,957 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2020-08-18 21:05:59,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-08-18 21:05:59,968 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:05:59,973 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 21:05:59,973 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:05:59,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:05:59,984 INFO L82 PathProgramCache]: Analyzing trace with hash 128923731, now seen corresponding path program 1 times [2020-08-18 21:05:59,999 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:05:59,999 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [360839147] [2020-08-18 21:06:00,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:06:00,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:06:00,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:06:00,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:06:00,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-18 21:06:00,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:06:00,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 21:06:00,283 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [360839147] [2020-08-18 21:06:00,285 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 21:06:00,285 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 21:06:00,286 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324591215] [2020-08-18 21:06:00,292 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 21:06:00,292 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:06:00,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 21:06:00,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-18 21:06:00,313 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 5 states. [2020-08-18 21:06:00,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:06:00,383 INFO L93 Difference]: Finished difference Result 40 states and 46 transitions. [2020-08-18 21:06:00,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 21:06:00,386 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-08-18 21:06:00,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:06:00,398 INFO L225 Difference]: With dead ends: 40 [2020-08-18 21:06:00,399 INFO L226 Difference]: Without dead ends: 26 [2020-08-18 21:06:00,403 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-18 21:06:00,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-08-18 21:06:00,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-08-18 21:06:00,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-08-18 21:06:00,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2020-08-18 21:06:00,464 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 13 [2020-08-18 21:06:00,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:06:00,465 INFO L479 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2020-08-18 21:06:00,465 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 21:06:00,466 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2020-08-18 21:06:00,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-08-18 21:06:00,468 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:06:00,469 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 21:06:00,469 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 21:06:00,470 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:06:00,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:06:00,470 INFO L82 PathProgramCache]: Analyzing trace with hash 1945633833, now seen corresponding path program 1 times [2020-08-18 21:06:00,471 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:06:00,472 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [832674203] [2020-08-18 21:06:00,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:06:00,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:06:00,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:06:00,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:06:00,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-18 21:06:00,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:06:00,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:06:00,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:06:00,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 21:06:00,656 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [832674203] [2020-08-18 21:06:00,656 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 21:06:00,657 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 21:06:00,657 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536903177] [2020-08-18 21:06:00,658 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 21:06:00,659 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:06:00,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 21:06:00,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-18 21:06:00,660 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand 5 states. [2020-08-18 21:06:00,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:06:00,682 INFO L93 Difference]: Finished difference Result 32 states and 36 transitions. [2020-08-18 21:06:00,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 21:06:00,683 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2020-08-18 21:06:00,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:06:00,684 INFO L225 Difference]: With dead ends: 32 [2020-08-18 21:06:00,684 INFO L226 Difference]: Without dead ends: 28 [2020-08-18 21:06:00,688 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-18 21:06:00,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-08-18 21:06:00,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 26. [2020-08-18 21:06:00,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-08-18 21:06:00,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2020-08-18 21:06:00,697 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 20 [2020-08-18 21:06:00,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:06:00,698 INFO L479 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2020-08-18 21:06:00,698 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 21:06:00,698 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2020-08-18 21:06:00,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-08-18 21:06:00,699 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:06:00,699 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 21:06:00,700 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 21:06:00,700 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:06:00,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:06:00,700 INFO L82 PathProgramCache]: Analyzing trace with hash 1974262984, now seen corresponding path program 1 times [2020-08-18 21:06:00,701 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:06:00,701 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1464024921] [2020-08-18 21:06:00,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:06:00,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:06:00,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:06:00,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:06:00,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-18 21:06:00,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:06:00,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:06:00,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:06:00,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 21:06:00,861 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1464024921] [2020-08-18 21:06:00,862 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 21:06:00,862 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 21:06:00,862 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874377898] [2020-08-18 21:06:00,863 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 21:06:00,863 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:06:00,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 21:06:00,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-08-18 21:06:00,864 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand 8 states. [2020-08-18 21:06:00,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:06:00,922 INFO L93 Difference]: Finished difference Result 48 states and 56 transitions. [2020-08-18 21:06:00,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-18 21:06:00,923 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 20 [2020-08-18 21:06:00,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:06:00,924 INFO L225 Difference]: With dead ends: 48 [2020-08-18 21:06:00,924 INFO L226 Difference]: Without dead ends: 32 [2020-08-18 21:06:00,925 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 21:06:00,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-08-18 21:06:00,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2020-08-18 21:06:00,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-08-18 21:06:00,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2020-08-18 21:06:00,932 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 20 [2020-08-18 21:06:00,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:06:00,933 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2020-08-18 21:06:00,933 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 21:06:00,933 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2020-08-18 21:06:00,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-08-18 21:06:00,934 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:06:00,935 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-08-18 21:06:00,935 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 21:06:00,935 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:06:00,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:06:00,936 INFO L82 PathProgramCache]: Analyzing trace with hash 1451784300, now seen corresponding path program 1 times [2020-08-18 21:06:00,936 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:06:00,936 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2118705814] [2020-08-18 21:06:00,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:06:00,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:06:00,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:06:00,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:06:00,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-18 21:06:01,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:06:01,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:06:01,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:06:01,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:06:01,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:06:01,142 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-08-18 21:06:01,142 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2118705814] [2020-08-18 21:06:01,143 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 21:06:01,143 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 21:06:01,143 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784349323] [2020-08-18 21:06:01,144 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 21:06:01,144 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:06:01,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 21:06:01,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-18 21:06:01,145 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand 5 states. [2020-08-18 21:06:01,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:06:01,168 INFO L93 Difference]: Finished difference Result 50 states and 57 transitions. [2020-08-18 21:06:01,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 21:06:01,168 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2020-08-18 21:06:01,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:06:01,170 INFO L225 Difference]: With dead ends: 50 [2020-08-18 21:06:01,170 INFO L226 Difference]: Without dead ends: 36 [2020-08-18 21:06:01,171 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-18 21:06:01,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-08-18 21:06:01,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 34. [2020-08-18 21:06:01,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-08-18 21:06:01,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2020-08-18 21:06:01,178 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 27 [2020-08-18 21:06:01,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:06:01,179 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2020-08-18 21:06:01,179 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 21:06:01,179 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2020-08-18 21:06:01,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-08-18 21:06:01,180 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:06:01,180 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-08-18 21:06:01,181 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 21:06:01,181 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:06:01,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:06:01,181 INFO L82 PathProgramCache]: Analyzing trace with hash 1255270795, now seen corresponding path program 1 times [2020-08-18 21:06:01,182 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:06:01,182 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1894071809] [2020-08-18 21:06:01,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:06:01,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:06:01,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:06:01,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:06:01,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-18 21:06:01,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:06:01,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:06:01,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:06:01,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:06:01,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:06:01,378 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-08-18 21:06:01,378 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1894071809] [2020-08-18 21:06:01,379 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 21:06:01,379 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-18 21:06:01,379 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978101233] [2020-08-18 21:06:01,380 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-18 21:06:01,380 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:06:01,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-18 21:06:01,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-08-18 21:06:01,381 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand 11 states. [2020-08-18 21:06:01,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:06:01,486 INFO L93 Difference]: Finished difference Result 64 states and 73 transitions. [2020-08-18 21:06:01,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-18 21:06:01,486 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 27 [2020-08-18 21:06:01,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:06:01,488 INFO L225 Difference]: With dead ends: 64 [2020-08-18 21:06:01,488 INFO L226 Difference]: Without dead ends: 44 [2020-08-18 21:06:01,489 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2020-08-18 21:06:01,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-08-18 21:06:01,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 38. [2020-08-18 21:06:01,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-08-18 21:06:01,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 42 transitions. [2020-08-18 21:06:01,496 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 42 transitions. Word has length 27 [2020-08-18 21:06:01,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:06:01,496 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 42 transitions. [2020-08-18 21:06:01,496 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-18 21:06:01,497 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 42 transitions. [2020-08-18 21:06:01,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-08-18 21:06:01,498 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:06:01,498 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 21:06:01,498 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 21:06:01,498 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:06:01,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:06:01,499 INFO L82 PathProgramCache]: Analyzing trace with hash 709659056, now seen corresponding path program 1 times [2020-08-18 21:06:01,499 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:06:01,499 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [207198452] [2020-08-18 21:06:01,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:06:01,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:06:01,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:06:01,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:06:01,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-18 21:06:01,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:06:01,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:06:01,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:06:01,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:06:01,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:06:01,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:06:01,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:06:01,863 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-08-18 21:06:01,864 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [207198452] [2020-08-18 21:06:01,864 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 21:06:01,864 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-08-18 21:06:01,865 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970446238] [2020-08-18 21:06:01,866 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-18 21:06:01,866 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:06:01,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-18 21:06:01,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2020-08-18 21:06:01,868 INFO L87 Difference]: Start difference. First operand 38 states and 42 transitions. Second operand 14 states. [2020-08-18 21:06:02,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:06:02,028 INFO L93 Difference]: Finished difference Result 72 states and 81 transitions. [2020-08-18 21:06:02,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-18 21:06:02,029 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 34 [2020-08-18 21:06:02,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:06:02,031 INFO L225 Difference]: With dead ends: 72 [2020-08-18 21:06:02,031 INFO L226 Difference]: Without dead ends: 52 [2020-08-18 21:06:02,032 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2020-08-18 21:06:02,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-08-18 21:06:02,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 42. [2020-08-18 21:06:02,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-08-18 21:06:02,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 46 transitions. [2020-08-18 21:06:02,039 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 46 transitions. Word has length 34 [2020-08-18 21:06:02,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:06:02,040 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 46 transitions. [2020-08-18 21:06:02,040 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-18 21:06:02,040 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 46 transitions. [2020-08-18 21:06:02,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-08-18 21:06:02,041 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:06:02,042 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 21:06:02,042 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 21:06:02,042 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:06:02,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:06:02,043 INFO L82 PathProgramCache]: Analyzing trace with hash -797786941, now seen corresponding path program 2 times [2020-08-18 21:06:02,043 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:06:02,043 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1529890434] [2020-08-18 21:06:02,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:06:02,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:06:02,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:06:02,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:06:02,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-18 21:06:02,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:06:02,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:06:02,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:06:02,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:06:02,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:06:02,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:06:02,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:06:02,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:06:02,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:06:02,383 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-08-18 21:06:02,384 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1529890434] [2020-08-18 21:06:02,384 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 21:06:02,384 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-08-18 21:06:02,385 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886606519] [2020-08-18 21:06:02,385 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-08-18 21:06:02,385 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:06:02,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-08-18 21:06:02,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2020-08-18 21:06:02,386 INFO L87 Difference]: Start difference. First operand 42 states and 46 transitions. Second operand 17 states. [2020-08-18 21:06:02,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:06:02,581 INFO L93 Difference]: Finished difference Result 80 states and 89 transitions. [2020-08-18 21:06:02,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-18 21:06:02,581 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 41 [2020-08-18 21:06:02,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:06:02,583 INFO L225 Difference]: With dead ends: 80 [2020-08-18 21:06:02,583 INFO L226 Difference]: Without dead ends: 60 [2020-08-18 21:06:02,584 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=47, Invalid=373, Unknown=0, NotChecked=0, Total=420 [2020-08-18 21:06:02,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-08-18 21:06:02,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 46. [2020-08-18 21:06:02,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-08-18 21:06:02,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 50 transitions. [2020-08-18 21:06:02,591 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 50 transitions. Word has length 41 [2020-08-18 21:06:02,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:06:02,591 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 50 transitions. [2020-08-18 21:06:02,591 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-08-18 21:06:02,591 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 50 transitions. [2020-08-18 21:06:02,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-08-18 21:06:02,593 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:06:02,593 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 21:06:02,593 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 21:06:02,594 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:06:02,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:06:02,594 INFO L82 PathProgramCache]: Analyzing trace with hash 1496626328, now seen corresponding path program 2 times [2020-08-18 21:06:02,594 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:06:02,595 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [567088979] [2020-08-18 21:06:02,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:06:02,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:06:02,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:06:02,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:06:02,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-18 21:06:02,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:06:02,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:06:02,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:06:02,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:06:02,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:06:02,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:06:02,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:06:02,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:06:02,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:06:03,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:06:03,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:06:03,055 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-08-18 21:06:03,056 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [567088979] [2020-08-18 21:06:03,056 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 21:06:03,056 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-08-18 21:06:03,057 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612174456] [2020-08-18 21:06:03,057 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-08-18 21:06:03,058 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:06:03,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-08-18 21:06:03,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=343, Unknown=0, NotChecked=0, Total=380 [2020-08-18 21:06:03,059 INFO L87 Difference]: Start difference. First operand 46 states and 50 transitions. Second operand 20 states. [2020-08-18 21:06:03,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:06:03,322 INFO L93 Difference]: Finished difference Result 90 states and 99 transitions. [2020-08-18 21:06:03,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-18 21:06:03,323 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 48 [2020-08-18 21:06:03,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:06:03,324 INFO L225 Difference]: With dead ends: 90 [2020-08-18 21:06:03,324 INFO L226 Difference]: Without dead ends: 70 [2020-08-18 21:06:03,326 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=57, Invalid=543, Unknown=0, NotChecked=0, Total=600 [2020-08-18 21:06:03,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-08-18 21:06:03,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 50. [2020-08-18 21:06:03,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-08-18 21:06:03,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions. [2020-08-18 21:06:03,333 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 48 [2020-08-18 21:06:03,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:06:03,333 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 54 transitions. [2020-08-18 21:06:03,333 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-08-18 21:06:03,333 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 54 transitions. [2020-08-18 21:06:03,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-08-18 21:06:03,335 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:06:03,335 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 21:06:03,335 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 21:06:03,335 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:06:03,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:06:03,336 INFO L82 PathProgramCache]: Analyzing trace with hash 1464480251, now seen corresponding path program 3 times [2020-08-18 21:06:03,336 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:06:03,336 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [473772303] [2020-08-18 21:06:03,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:06:03,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:06:03,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:06:03,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:06:03,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-18 21:06:03,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:06:03,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:06:03,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:06:03,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:06:03,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:06:03,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:06:03,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:06:03,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:06:03,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:06:03,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:06:03,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:06:03,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:06:03,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:06:03,904 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 6 proven. 24 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-08-18 21:06:03,905 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [473772303] [2020-08-18 21:06:03,905 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 21:06:03,905 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-08-18 21:06:03,909 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116330684] [2020-08-18 21:06:03,911 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-08-18 21:06:03,911 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:06:03,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-08-18 21:06:03,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=343, Unknown=0, NotChecked=0, Total=380 [2020-08-18 21:06:03,912 INFO L87 Difference]: Start difference. First operand 50 states and 54 transitions. Second operand 20 states. [2020-08-18 21:06:04,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:06:04,230 INFO L93 Difference]: Finished difference Result 94 states and 102 transitions. [2020-08-18 21:06:04,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-18 21:06:04,231 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 55 [2020-08-18 21:06:04,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:06:04,232 INFO L225 Difference]: With dead ends: 94 [2020-08-18 21:06:04,232 INFO L226 Difference]: Without dead ends: 76 [2020-08-18 21:06:04,233 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=57, Invalid=543, Unknown=0, NotChecked=0, Total=600 [2020-08-18 21:06:04,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-08-18 21:06:04,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 70. [2020-08-18 21:06:04,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-08-18 21:06:04,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 74 transitions. [2020-08-18 21:06:04,245 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 74 transitions. Word has length 55 [2020-08-18 21:06:04,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:06:04,245 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 74 transitions. [2020-08-18 21:06:04,245 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-08-18 21:06:04,245 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 74 transitions. [2020-08-18 21:06:04,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-08-18 21:06:04,248 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:06:04,249 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 21:06:04,249 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 21:06:04,249 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:06:04,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:06:04,249 INFO L82 PathProgramCache]: Analyzing trace with hash -1405297280, now seen corresponding path program 3 times [2020-08-18 21:06:04,250 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:06:04,250 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1143376287] [2020-08-18 21:06:04,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:06:04,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:06:04,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:06:04,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:06:04,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-18 21:06:04,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:06:04,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:06:04,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:06:04,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:06:04,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:06:04,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:06:04,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:06:04,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:06:04,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:06:04,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:06:04,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:06:04,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:06:04,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:06:04,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:06:04,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:06:04,870 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 18 proven. 24 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-08-18 21:06:04,871 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1143376287] [2020-08-18 21:06:04,871 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 21:06:04,871 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-08-18 21:06:04,871 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309684832] [2020-08-18 21:06:04,872 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-08-18 21:06:04,872 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:06:04,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-08-18 21:06:04,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=343, Unknown=0, NotChecked=0, Total=380 [2020-08-18 21:06:04,873 INFO L87 Difference]: Start difference. First operand 70 states and 74 transitions. Second operand 20 states. [2020-08-18 21:06:05,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:06:05,130 INFO L93 Difference]: Finished difference Result 82 states and 87 transitions. [2020-08-18 21:06:05,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-18 21:06:05,133 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 62 [2020-08-18 21:06:05,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:06:05,133 INFO L225 Difference]: With dead ends: 82 [2020-08-18 21:06:05,134 INFO L226 Difference]: Without dead ends: 0 [2020-08-18 21:06:05,135 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=57, Invalid=543, Unknown=0, NotChecked=0, Total=600 [2020-08-18 21:06:05,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-18 21:06:05,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-18 21:06:05,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-18 21:06:05,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-18 21:06:05,136 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 62 [2020-08-18 21:06:05,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:06:05,139 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-18 21:06:05,139 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-08-18 21:06:05,139 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-18 21:06:05,139 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-18 21:06:05,139 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 21:06:05,143 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-18 21:06:05,171 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-08-18 21:06:05,172 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-08-18 21:06:05,172 INFO L268 CegarLoopResult]: For program point L17(line 17) no Hoare annotation was computed. [2020-08-18 21:06:05,172 INFO L271 CegarLoopResult]: At program point L16(line 16) the Hoare annotation is: true [2020-08-18 21:06:05,172 INFO L268 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-08-18 21:06:05,172 INFO L268 CegarLoopResult]: For program point L16-1(line 16) no Hoare annotation was computed. [2020-08-18 21:06:05,173 INFO L268 CegarLoopResult]: For program point id2EXIT(lines 14 19) no Hoare annotation was computed. [2020-08-18 21:06:05,173 INFO L271 CegarLoopResult]: At program point id2ENTRY(lines 14 19) the Hoare annotation is: true [2020-08-18 21:06:05,174 INFO L268 CegarLoopResult]: For program point id2FINAL(lines 14 19) no Hoare annotation was computed. [2020-08-18 21:06:05,174 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-08-18 21:06:05,174 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-08-18 21:06:05,174 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-08-18 21:06:05,174 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-08-18 21:06:05,175 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 25) no Hoare annotation was computed. [2020-08-18 21:06:05,175 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 21 27) the Hoare annotation is: true [2020-08-18 21:06:05,175 INFO L268 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2020-08-18 21:06:05,176 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 21 27) no Hoare annotation was computed. [2020-08-18 21:06:05,176 INFO L268 CegarLoopResult]: For program point L24(lines 24 26) no Hoare annotation was computed. [2020-08-18 21:06:05,176 INFO L271 CegarLoopResult]: At program point L23(line 23) the Hoare annotation is: true [2020-08-18 21:06:05,176 INFO L268 CegarLoopResult]: For program point L23-1(line 23) no Hoare annotation was computed. [2020-08-18 21:06:05,176 INFO L268 CegarLoopResult]: For program point L24-2(lines 21 27) no Hoare annotation was computed. [2020-08-18 21:06:05,176 INFO L268 CegarLoopResult]: For program point idFINAL(lines 7 12) no Hoare annotation was computed. [2020-08-18 21:06:05,176 INFO L268 CegarLoopResult]: For program point idEXIT(lines 7 12) no Hoare annotation was computed. [2020-08-18 21:06:05,177 INFO L268 CegarLoopResult]: For program point L10(line 10) no Hoare annotation was computed. [2020-08-18 21:06:05,177 INFO L271 CegarLoopResult]: At program point L9(line 9) the Hoare annotation is: true [2020-08-18 21:06:05,177 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-08-18 21:06:05,177 INFO L268 CegarLoopResult]: For program point L9-1(line 9) no Hoare annotation was computed. [2020-08-18 21:06:05,177 INFO L271 CegarLoopResult]: At program point idENTRY(lines 7 12) the Hoare annotation is: true [2020-08-18 21:06:05,187 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 09:06:05 BoogieIcfgContainer [2020-08-18 21:06:05,187 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 21:06:05,190 INFO L168 Benchmark]: Toolchain (without parser) took 5999.49 ms. Allocated memory was 141.6 MB in the beginning and 275.8 MB in the end (delta: 134.2 MB). Free memory was 104.6 MB in the beginning and 162.6 MB in the end (delta: -58.0 MB). Peak memory consumption was 76.2 MB. Max. memory is 7.1 GB. [2020-08-18 21:06:05,191 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 141.6 MB. Free memory was 123.1 MB in the beginning and 122.9 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-18 21:06:05,192 INFO L168 Benchmark]: CACSL2BoogieTranslator took 302.74 ms. Allocated memory is still 141.6 MB. Free memory was 104.2 MB in the beginning and 94.7 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. [2020-08-18 21:06:05,195 INFO L168 Benchmark]: Boogie Preprocessor took 133.59 ms. Allocated memory was 141.6 MB in the beginning and 205.0 MB in the end (delta: 63.4 MB). Free memory was 94.7 MB in the beginning and 183.0 MB in the end (delta: -88.4 MB). Peak memory consumption was 12.9 MB. Max. memory is 7.1 GB. [2020-08-18 21:06:05,198 INFO L168 Benchmark]: RCFGBuilder took 230.56 ms. Allocated memory is still 205.0 MB. Free memory was 183.0 MB in the beginning and 170.7 MB in the end (delta: 12.3 MB). Peak memory consumption was 12.3 MB. Max. memory is 7.1 GB. [2020-08-18 21:06:05,198 INFO L168 Benchmark]: TraceAbstraction took 5327.77 ms. Allocated memory was 205.0 MB in the beginning and 275.8 MB in the end (delta: 70.8 MB). Free memory was 170.1 MB in the beginning and 162.6 MB in the end (delta: 7.5 MB). Peak memory consumption was 78.3 MB. Max. memory is 7.1 GB. [2020-08-18 21:06:05,207 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 141.6 MB. Free memory was 123.1 MB in the beginning and 122.9 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 302.74 ms. Allocated memory is still 141.6 MB. Free memory was 104.2 MB in the beginning and 94.7 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 133.59 ms. Allocated memory was 141.6 MB in the beginning and 205.0 MB in the end (delta: 63.4 MB). Free memory was 94.7 MB in the beginning and 183.0 MB in the end (delta: -88.4 MB). Peak memory consumption was 12.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 230.56 ms. Allocated memory is still 205.0 MB. Free memory was 183.0 MB in the beginning and 170.7 MB in the end (delta: 12.3 MB). Peak memory consumption was 12.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5327.77 ms. Allocated memory was 205.0 MB in the beginning and 275.8 MB in the end (delta: 70.8 MB). Free memory was 170.1 MB in the beginning and 162.6 MB in the end (delta: 7.5 MB). Peak memory consumption was 78.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 25]: 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 - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 28 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.2s, OverallIterations: 10, TraceHistogramMax: 4, AutomataDifference: 1.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 323 SDtfs, 58 SDslu, 3296 SDs, 0 SdLazy, 1115 SolverSat, 13 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 256 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 2.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=70occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 62 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 11 PreInvPairs, 11 NumberOfFragments, 9 HoareAnnotationTreeSize, 11 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 3.0s InterpolantComputationTime, 347 NumberOfCodeBlocks, 347 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 337 ConstructedInterpolants, 0 QuantifiedInterpolants, 50267 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 4 PerfectInterpolantSequences, 118/206 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...