/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=5000 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive-simple/id2_b2_o3.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 21:21:34,537 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 21:21:34,540 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 21:21:34,565 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 21:21:34,565 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 21:21:34,566 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 21:21:34,568 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 21:21:34,569 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 21:21:34,571 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 21:21:34,572 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 21:21:34,573 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 21:21:34,574 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 21:21:34,574 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 21:21:34,575 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 21:21:34,576 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 21:21:34,577 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 21:21:34,578 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 21:21:34,579 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 21:21:34,580 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 21:21:34,582 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 21:21:34,583 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 21:21:34,584 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 21:21:34,585 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 21:21:34,586 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 21:21:34,589 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 21:21:34,589 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 21:21:34,589 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 21:21:34,593 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 21:21:34,593 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 21:21:34,594 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 21:21:34,595 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 21:21:34,595 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 21:21:34,596 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 21:21:34,596 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 21:21:34,600 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 21:21:34,601 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 21:21:34,601 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 21:21:34,601 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 21:21:34,601 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 21:21:34,602 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 21:21:34,603 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 21:21:34,604 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 [2020-08-21 21:21:34,627 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 21:21:34,627 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 21:21:34,629 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 21:21:34,629 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 21:21:34,629 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 21:21:34,629 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 21:21:34,630 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 21:21:34,630 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 21:21:34,630 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 21:21:34,630 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 21:21:34,630 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 21:21:34,631 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 21:21:34,631 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 21:21:34,631 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 21:21:34,631 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 21:21:34,631 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 21:21:34,632 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 21:21:34,632 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 21:21:34,632 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 21:21:34,632 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 21:21:34,632 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 21:21:34,633 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 21:21:34,633 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 21:21:34,633 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 21:21:34,633 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 21:21:34,633 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 21:21:34,634 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 21:21:34,634 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 21:21:34,634 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 21:21:34,634 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=5000;interpolation-heuristic=NARROWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true; [2020-08-21 21:21:34,929 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 21:21:34,943 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 21:21:34,946 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 21:21:34,948 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 21:21:34,948 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 21:21:34,949 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/id2_b2_o3.c [2020-08-21 21:21:35,015 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0a7ce918e/b7ecf35c6de546fcb4007eee575181c0/FLAGd27bb3c58 [2020-08-21 21:21:35,521 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 21:21:35,522 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/id2_b2_o3.c [2020-08-21 21:21:35,529 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0a7ce918e/b7ecf35c6de546fcb4007eee575181c0/FLAGd27bb3c58 [2020-08-21 21:21:35,893 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0a7ce918e/b7ecf35c6de546fcb4007eee575181c0 [2020-08-21 21:21:35,903 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 21:21:35,905 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 21:21:35,906 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 21:21:35,907 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 21:21:35,910 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 21:21:35,911 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 09:21:35" (1/1) ... [2020-08-21 21:21:35,914 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50050cfc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:21:35, skipping insertion in model container [2020-08-21 21:21:35,914 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 09:21:35" (1/1) ... [2020-08-21 21:21:35,922 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 21:21:35,940 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 21:21:36,111 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 21:21:36,116 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 21:21:36,133 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 21:21:36,148 INFO L208 MainTranslator]: Completed translation [2020-08-21 21:21:36,149 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:21:36 WrapperNode [2020-08-21 21:21:36,149 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 21:21:36,150 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 21:21:36,150 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 21:21:36,150 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 21:21:36,164 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:21:36" (1/1) ... [2020-08-21 21:21:36,164 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:21:36" (1/1) ... [2020-08-21 21:21:36,169 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:21:36" (1/1) ... [2020-08-21 21:21:36,170 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:21:36" (1/1) ... [2020-08-21 21:21:36,254 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:21:36" (1/1) ... [2020-08-21 21:21:36,256 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:21:36" (1/1) ... [2020-08-21 21:21:36,257 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:21:36" (1/1) ... [2020-08-21 21:21:36,260 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 21:21:36,261 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 21:21:36,261 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 21:21:36,261 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 21:21:36,262 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:21:36" (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 [2020-08-21 21:21:36,320 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 21:21:36,321 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 21:21:36,321 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2020-08-21 21:21:36,322 INFO L138 BoogieDeclarations]: Found implementation of procedure id2 [2020-08-21 21:21:36,322 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 21:21:36,322 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-08-21 21:21:36,322 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 21:21:36,322 INFO L130 BoogieDeclarations]: Found specification of procedure id [2020-08-21 21:21:36,323 INFO L130 BoogieDeclarations]: Found specification of procedure id2 [2020-08-21 21:21:36,323 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 21:21:36,323 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 21:21:36,323 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 21:21:36,577 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 21:21:36,578 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-21 21:21:36,584 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 09:21:36 BoogieIcfgContainer [2020-08-21 21:21:36,584 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 21:21:36,598 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 21:21:36,598 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 21:21:36,610 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 21:21:36,610 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 09:21:35" (1/3) ... [2020-08-21 21:21:36,612 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58c094c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 09:21:36, skipping insertion in model container [2020-08-21 21:21:36,612 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:21:36" (2/3) ... [2020-08-21 21:21:36,612 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58c094c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 09:21:36, skipping insertion in model container [2020-08-21 21:21:36,613 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 09:21:36" (3/3) ... [2020-08-21 21:21:36,618 INFO L109 eAbstractionObserver]: Analyzing ICFG id2_b2_o3.c [2020-08-21 21:21:36,643 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 21:21:36,654 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 21:21:36,668 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 21:21:36,692 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 21:21:36,692 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 21:21:36,692 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 21:21:36,692 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 21:21:36,692 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 21:21:36,693 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 21:21:36,693 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 21:21:36,693 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 21:21:36,711 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2020-08-21 21:21:36,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-08-21 21:21:36,717 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:21:36,718 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 21:21:36,718 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:21:36,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:21:36,723 INFO L82 PathProgramCache]: Analyzing trace with hash 128923731, now seen corresponding path program 1 times [2020-08-21 21:21:36,730 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:21:36,731 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [19041963] [2020-08-21 21:21:36,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:21:36,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:21:36,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:21:36,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:21:36,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-21 21:21:36,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:21:37,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 21:21:37,014 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [19041963] [2020-08-21 21:21:37,016 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 21:21:37,017 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 21:21:37,018 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890134187] [2020-08-21 21:21:37,023 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 21:21:37,023 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:21:37,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 21:21:37,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 21:21:37,037 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 5 states. [2020-08-21 21:21:37,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:21:37,094 INFO L93 Difference]: Finished difference Result 40 states and 46 transitions. [2020-08-21 21:21:37,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 21:21:37,096 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-08-21 21:21:37,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:21:37,107 INFO L225 Difference]: With dead ends: 40 [2020-08-21 21:21:37,108 INFO L226 Difference]: Without dead ends: 26 [2020-08-21 21:21:37,111 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 21:21:37,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-08-21 21:21:37,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-08-21 21:21:37,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-08-21 21:21:37,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2020-08-21 21:21:37,156 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 13 [2020-08-21 21:21:37,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:21:37,157 INFO L479 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2020-08-21 21:21:37,157 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 21:21:37,157 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2020-08-21 21:21:37,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-08-21 21:21:37,159 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:21:37,159 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] [2020-08-21 21:21:37,160 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 21:21:37,160 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:21:37,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:21:37,161 INFO L82 PathProgramCache]: Analyzing trace with hash 1945633833, now seen corresponding path program 1 times [2020-08-21 21:21:37,161 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:21:37,161 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1398290878] [2020-08-21 21:21:37,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:21:37,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:21:37,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:21:37,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:21:37,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-21 21:21:37,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:21:37,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:21:37,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:21:37,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 21:21:37,349 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1398290878] [2020-08-21 21:21:37,349 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 21:21:37,349 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 21:21:37,350 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683078801] [2020-08-21 21:21:37,352 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 21:21:37,352 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:21:37,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 21:21:37,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 21:21:37,353 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand 5 states. [2020-08-21 21:21:37,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:21:37,372 INFO L93 Difference]: Finished difference Result 32 states and 36 transitions. [2020-08-21 21:21:37,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 21:21:37,373 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2020-08-21 21:21:37,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:21:37,375 INFO L225 Difference]: With dead ends: 32 [2020-08-21 21:21:37,375 INFO L226 Difference]: Without dead ends: 28 [2020-08-21 21:21:37,377 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 [2020-08-21 21:21:37,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-08-21 21:21:37,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 26. [2020-08-21 21:21:37,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-08-21 21:21:37,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2020-08-21 21:21:37,385 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 20 [2020-08-21 21:21:37,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:21:37,385 INFO L479 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2020-08-21 21:21:37,385 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 21:21:37,386 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2020-08-21 21:21:37,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-08-21 21:21:37,387 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:21:37,387 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] [2020-08-21 21:21:37,387 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 21:21:37,388 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:21:37,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:21:37,388 INFO L82 PathProgramCache]: Analyzing trace with hash 1974262984, now seen corresponding path program 1 times [2020-08-21 21:21:37,389 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:21:37,389 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1919868336] [2020-08-21 21:21:37,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:21:37,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:21:37,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:21:37,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:21:37,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-21 21:21:37,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:21:37,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:21:37,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:21:37,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 21:21:37,614 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1919868336] [2020-08-21 21:21:37,614 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 21:21:37,614 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 21:21:37,615 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224279341] [2020-08-21 21:21:37,615 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 21:21:37,616 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:21:37,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 21:21:37,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-08-21 21:21:37,616 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand 8 states. [2020-08-21 21:21:37,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:21:37,727 INFO L93 Difference]: Finished difference Result 48 states and 56 transitions. [2020-08-21 21:21:37,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-21 21:21:37,729 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 20 [2020-08-21 21:21:37,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:21:37,731 INFO L225 Difference]: With dead ends: 48 [2020-08-21 21:21:37,732 INFO L226 Difference]: Without dead ends: 32 [2020-08-21 21:21:37,734 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 21:21:37,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-08-21 21:21:37,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2020-08-21 21:21:37,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-08-21 21:21:37,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2020-08-21 21:21:37,750 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 20 [2020-08-21 21:21:37,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:21:37,751 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2020-08-21 21:21:37,752 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 21:21:37,753 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2020-08-21 21:21:37,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-08-21 21:21:37,758 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:21:37,759 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] [2020-08-21 21:21:37,759 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 21:21:37,759 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:21:37,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:21:37,760 INFO L82 PathProgramCache]: Analyzing trace with hash 1451784300, now seen corresponding path program 1 times [2020-08-21 21:21:37,760 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:21:37,760 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [959593490] [2020-08-21 21:21:37,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:21:37,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:21:37,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:21:37,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:21:37,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-21 21:21:37,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:21:37,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:21:37,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:21:37,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:21:37,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:21:37,905 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-08-21 21:21:37,905 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [959593490] [2020-08-21 21:21:37,906 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 21:21:37,906 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 21:21:37,906 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765946793] [2020-08-21 21:21:37,907 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 21:21:37,907 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:21:37,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 21:21:37,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 21:21:37,908 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand 5 states. [2020-08-21 21:21:37,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:21:37,930 INFO L93 Difference]: Finished difference Result 50 states and 57 transitions. [2020-08-21 21:21:37,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 21:21:37,931 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2020-08-21 21:21:37,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:21:37,933 INFO L225 Difference]: With dead ends: 50 [2020-08-21 21:21:37,933 INFO L226 Difference]: Without dead ends: 36 [2020-08-21 21:21:37,934 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 [2020-08-21 21:21:37,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-08-21 21:21:37,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 34. [2020-08-21 21:21:37,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-08-21 21:21:37,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2020-08-21 21:21:37,943 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 27 [2020-08-21 21:21:37,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:21:37,943 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2020-08-21 21:21:37,944 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 21:21:37,944 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2020-08-21 21:21:37,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-08-21 21:21:37,945 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:21:37,945 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] [2020-08-21 21:21:37,961 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 21:21:37,961 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:21:37,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:21:37,962 INFO L82 PathProgramCache]: Analyzing trace with hash 1255270795, now seen corresponding path program 1 times [2020-08-21 21:21:37,962 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:21:37,963 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1036699848] [2020-08-21 21:21:37,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:21:37,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:21:38,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:21:38,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:21:38,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-21 21:21:38,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:21:38,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:21:38,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:21:38,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:21:38,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:21:38,184 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-08-21 21:21:38,184 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1036699848] [2020-08-21 21:21:38,185 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 21:21:38,185 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-21 21:21:38,185 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438247430] [2020-08-21 21:21:38,186 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-21 21:21:38,186 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:21:38,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-21 21:21:38,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-08-21 21:21:38,187 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand 11 states. [2020-08-21 21:21:38,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:21:38,294 INFO L93 Difference]: Finished difference Result 66 states and 75 transitions. [2020-08-21 21:21:38,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-21 21:21:38,295 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 27 [2020-08-21 21:21:38,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:21:38,297 INFO L225 Difference]: With dead ends: 66 [2020-08-21 21:21:38,297 INFO L226 Difference]: Without dead ends: 46 [2020-08-21 21:21:38,298 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 [2020-08-21 21:21:38,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-08-21 21:21:38,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 38. [2020-08-21 21:21:38,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-08-21 21:21:38,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 42 transitions. [2020-08-21 21:21:38,306 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 42 transitions. Word has length 27 [2020-08-21 21:21:38,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:21:38,306 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 42 transitions. [2020-08-21 21:21:38,307 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-21 21:21:38,307 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 42 transitions. [2020-08-21 21:21:38,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-08-21 21:21:38,308 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:21:38,308 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] [2020-08-21 21:21:38,308 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 21:21:38,309 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:21:38,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:21:38,309 INFO L82 PathProgramCache]: Analyzing trace with hash 709659056, now seen corresponding path program 1 times [2020-08-21 21:21:38,309 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:21:38,310 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1030227540] [2020-08-21 21:21:38,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:21:38,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:21:38,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:21:38,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:21:38,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-21 21:21:38,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:21:38,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:21:38,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:21:38,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:21:38,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:21:38,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:21:38,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:21:38,630 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-08-21 21:21:38,631 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1030227540] [2020-08-21 21:21:38,632 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 21:21:38,632 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-21 21:21:38,633 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819534481] [2020-08-21 21:21:38,634 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-21 21:21:38,635 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:21:38,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-21 21:21:38,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-08-21 21:21:38,636 INFO L87 Difference]: Start difference. First operand 38 states and 42 transitions. Second operand 11 states. [2020-08-21 21:21:38,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:21:38,736 INFO L93 Difference]: Finished difference Result 70 states and 78 transitions. [2020-08-21 21:21:38,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-21 21:21:38,737 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 34 [2020-08-21 21:21:38,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:21:38,738 INFO L225 Difference]: With dead ends: 70 [2020-08-21 21:21:38,738 INFO L226 Difference]: Without dead ends: 52 [2020-08-21 21:21:38,739 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2020-08-21 21:21:38,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-08-21 21:21:38,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 46. [2020-08-21 21:21:38,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-08-21 21:21:38,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 50 transitions. [2020-08-21 21:21:38,747 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 50 transitions. Word has length 34 [2020-08-21 21:21:38,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:21:38,747 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 50 transitions. [2020-08-21 21:21:38,747 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-21 21:21:38,747 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 50 transitions. [2020-08-21 21:21:38,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-08-21 21:21:38,749 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:21:38,749 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] [2020-08-21 21:21:38,749 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 21:21:38,750 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:21:38,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:21:38,750 INFO L82 PathProgramCache]: Analyzing trace with hash -797786941, now seen corresponding path program 2 times [2020-08-21 21:21:38,750 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:21:38,751 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1309808281] [2020-08-21 21:21:38,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:21:38,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:21:38,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:21:38,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:21:38,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-21 21:21:38,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:21:38,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:21:38,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:21:38,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:21:38,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:21:38,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:21:38,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:21:38,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:21:38,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:21:38,988 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-08-21 21:21:38,989 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1309808281] [2020-08-21 21:21:38,989 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 21:21:38,990 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-21 21:21:38,990 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849248469] [2020-08-21 21:21:38,990 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-21 21:21:38,991 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:21:38,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-21 21:21:38,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-08-21 21:21:38,992 INFO L87 Difference]: Start difference. First operand 46 states and 50 transitions. Second operand 11 states. [2020-08-21 21:21:39,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:21:39,089 INFO L93 Difference]: Finished difference Result 58 states and 63 transitions. [2020-08-21 21:21:39,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-21 21:21:39,090 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 41 [2020-08-21 21:21:39,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:21:39,090 INFO L225 Difference]: With dead ends: 58 [2020-08-21 21:21:39,091 INFO L226 Difference]: Without dead ends: 0 [2020-08-21 21:21:39,092 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2020-08-21 21:21:39,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-21 21:21:39,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-21 21:21:39,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-21 21:21:39,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-21 21:21:39,093 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 41 [2020-08-21 21:21:39,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:21:39,093 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-21 21:21:39,093 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-21 21:21:39,093 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-21 21:21:39,094 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-21 21:21:39,094 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 21:21:39,096 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-21 21:21:39,121 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-08-21 21:21:39,121 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-08-21 21:21:39,121 INFO L268 CegarLoopResult]: For program point L17(line 17) no Hoare annotation was computed. [2020-08-21 21:21:39,122 INFO L271 CegarLoopResult]: At program point L16(line 16) the Hoare annotation is: true [2020-08-21 21:21:39,122 INFO L268 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-08-21 21:21:39,122 INFO L268 CegarLoopResult]: For program point L16-1(line 16) no Hoare annotation was computed. [2020-08-21 21:21:39,122 INFO L268 CegarLoopResult]: For program point id2EXIT(lines 14 19) no Hoare annotation was computed. [2020-08-21 21:21:39,122 INFO L271 CegarLoopResult]: At program point id2ENTRY(lines 14 19) the Hoare annotation is: true [2020-08-21 21:21:39,122 INFO L268 CegarLoopResult]: For program point id2FINAL(lines 14 19) no Hoare annotation was computed. [2020-08-21 21:21:39,123 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-08-21 21:21:39,123 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-08-21 21:21:39,123 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-08-21 21:21:39,123 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-08-21 21:21:39,123 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 25) no Hoare annotation was computed. [2020-08-21 21:21:39,123 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 21 27) the Hoare annotation is: true [2020-08-21 21:21:39,124 INFO L268 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2020-08-21 21:21:39,124 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 21 27) no Hoare annotation was computed. [2020-08-21 21:21:39,124 INFO L268 CegarLoopResult]: For program point L24(lines 24 26) no Hoare annotation was computed. [2020-08-21 21:21:39,124 INFO L271 CegarLoopResult]: At program point L23(line 23) the Hoare annotation is: true [2020-08-21 21:21:39,124 INFO L268 CegarLoopResult]: For program point L23-1(line 23) no Hoare annotation was computed. [2020-08-21 21:21:39,124 INFO L268 CegarLoopResult]: For program point L24-2(lines 21 27) no Hoare annotation was computed. [2020-08-21 21:21:39,124 INFO L268 CegarLoopResult]: For program point idFINAL(lines 7 12) no Hoare annotation was computed. [2020-08-21 21:21:39,125 INFO L268 CegarLoopResult]: For program point idEXIT(lines 7 12) no Hoare annotation was computed. [2020-08-21 21:21:39,125 INFO L268 CegarLoopResult]: For program point L10(line 10) no Hoare annotation was computed. [2020-08-21 21:21:39,125 INFO L271 CegarLoopResult]: At program point L9(line 9) the Hoare annotation is: true [2020-08-21 21:21:39,125 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-08-21 21:21:39,125 INFO L268 CegarLoopResult]: For program point L9-1(line 9) no Hoare annotation was computed. [2020-08-21 21:21:39,125 INFO L271 CegarLoopResult]: At program point idENTRY(lines 7 12) the Hoare annotation is: true [2020-08-21 21:21:39,131 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 09:21:39 BoogieIcfgContainer [2020-08-21 21:21:39,132 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 21:21:39,134 INFO L168 Benchmark]: Toolchain (without parser) took 3228.92 ms. Allocated memory was 138.4 MB in the beginning and 248.0 MB in the end (delta: 109.6 MB). Free memory was 101.5 MB in the beginning and 210.3 MB in the end (delta: -108.8 MB). Peak memory consumption was 808.3 kB. Max. memory is 7.1 GB. [2020-08-21 21:21:39,135 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 138.4 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-08-21 21:21:39,136 INFO L168 Benchmark]: CACSL2BoogieTranslator took 243.02 ms. Allocated memory is still 138.4 MB. Free memory was 101.3 MB in the beginning and 91.9 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. [2020-08-21 21:21:39,137 INFO L168 Benchmark]: Boogie Preprocessor took 110.42 ms. Allocated memory was 138.4 MB in the beginning and 201.3 MB in the end (delta: 62.9 MB). Free memory was 91.9 MB in the beginning and 180.4 MB in the end (delta: -88.5 MB). Peak memory consumption was 13.3 MB. Max. memory is 7.1 GB. [2020-08-21 21:21:39,138 INFO L168 Benchmark]: RCFGBuilder took 323.83 ms. Allocated memory is still 201.3 MB. Free memory was 180.4 MB in the beginning and 167.6 MB in the end (delta: 12.8 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. [2020-08-21 21:21:39,139 INFO L168 Benchmark]: TraceAbstraction took 2534.36 ms. Allocated memory was 201.3 MB in the beginning and 248.0 MB in the end (delta: 46.7 MB). Free memory was 166.9 MB in the beginning and 210.3 MB in the end (delta: -43.4 MB). Peak memory consumption was 3.3 MB. Max. memory is 7.1 GB. [2020-08-21 21:21:39,142 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 138.4 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 243.02 ms. Allocated memory is still 138.4 MB. Free memory was 101.3 MB in the beginning and 91.9 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 110.42 ms. Allocated memory was 138.4 MB in the beginning and 201.3 MB in the end (delta: 62.9 MB). Free memory was 91.9 MB in the beginning and 180.4 MB in the end (delta: -88.5 MB). Peak memory consumption was 13.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 323.83 ms. Allocated memory is still 201.3 MB. Free memory was 180.4 MB in the beginning and 167.6 MB in the end (delta: 12.8 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2534.36 ms. Allocated memory was 201.3 MB in the beginning and 248.0 MB in the end (delta: 46.7 MB). Free memory was 166.9 MB in the beginning and 210.3 MB in the end (delta: -43.4 MB). Peak memory consumption was 3.3 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: 2.4s, OverallIterations: 7, TraceHistogramMax: 3, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 206 SDtfs, 22 SDslu, 1143 SDs, 0 SdLazy, 250 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 121 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=46occurred in iteration=6, 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, 7 MinimizatonAttempts, 20 StatesRemovedByMinimization, 5 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, 1.3s InterpolantComputationTime, 182 NumberOfCodeBlocks, 182 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 175 ConstructedInterpolants, 0 QuantifiedInterpolants, 14817 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 4 PerfectInterpolantSequences, 31/41 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...