/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 --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=1000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-acceleration/underapprox_2-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 19:34:16,103 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 19:34:16,108 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 19:34:16,136 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 19:34:16,136 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 19:34:16,137 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 19:34:16,138 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 19:34:16,140 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 19:34:16,142 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 19:34:16,143 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 19:34:16,144 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 19:34:16,145 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 19:34:16,145 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 19:34:16,146 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 19:34:16,147 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 19:34:16,148 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 19:34:16,149 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 19:34:16,150 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 19:34:16,152 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 19:34:16,154 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 19:34:16,155 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 19:34:16,156 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 19:34:16,157 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 19:34:16,158 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 19:34:16,161 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 19:34:16,161 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 19:34:16,161 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 19:34:16,162 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 19:34:16,163 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 19:34:16,164 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 19:34:16,164 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 19:34:16,165 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 19:34:16,166 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 19:34:16,167 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 19:34:16,168 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 19:34:16,168 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 19:34:16,169 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 19:34:16,169 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 19:34:16,169 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 19:34:16,170 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 19:34:16,171 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 19:34:16,172 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 [2020-09-24 19:34:16,198 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 19:34:16,198 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 19:34:16,200 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 19:34:16,200 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 19:34:16,200 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 19:34:16,200 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 19:34:16,200 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 19:34:16,201 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 19:34:16,201 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 19:34:16,201 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 19:34:16,201 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 19:34:16,201 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 19:34:16,202 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 19:34:16,202 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 19:34:16,202 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 19:34:16,202 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 19:34:16,202 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 19:34:16,203 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 19:34:16,203 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 19:34:16,203 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 19:34:16,203 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 19:34:16,203 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 19:34:16,204 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 19:34:16,204 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 19:34:16,204 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 19:34:16,204 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 19:34:16,204 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 19:34:16,205 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 19:34:16,205 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 19:34:16,205 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.rcfgbuilder: Size of a code block -> SingleStatement 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 -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-09-24 19:34:16,660 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 19:34:16,685 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 19:34:16,689 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 19:34:16,693 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 19:34:16,693 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 19:34:16,695 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-acceleration/underapprox_2-2.c [2020-09-24 19:34:16,785 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/203be5797/35ab11e3338f4f13bfd49105fbced4a8/FLAGf4b43c4f9 [2020-09-24 19:34:17,296 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 19:34:17,297 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-acceleration/underapprox_2-2.c [2020-09-24 19:34:17,305 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/203be5797/35ab11e3338f4f13bfd49105fbced4a8/FLAGf4b43c4f9 [2020-09-24 19:34:17,652 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/203be5797/35ab11e3338f4f13bfd49105fbced4a8 [2020-09-24 19:34:17,667 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 19:34:17,674 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 19:34:17,675 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 19:34:17,675 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 19:34:17,679 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 19:34:17,680 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 07:34:17" (1/1) ... [2020-09-24 19:34:17,684 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20f2544e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:34:17, skipping insertion in model container [2020-09-24 19:34:17,685 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 07:34:17" (1/1) ... [2020-09-24 19:34:17,694 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 19:34:17,717 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 19:34:17,918 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 19:34:17,923 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 19:34:17,942 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 19:34:17,960 INFO L208 MainTranslator]: Completed translation [2020-09-24 19:34:17,960 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:34:17 WrapperNode [2020-09-24 19:34:17,960 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 19:34:17,961 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 19:34:17,961 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 19:34:17,962 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 19:34:17,978 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:34:17" (1/1) ... [2020-09-24 19:34:17,978 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:34:17" (1/1) ... [2020-09-24 19:34:17,983 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:34:17" (1/1) ... [2020-09-24 19:34:17,984 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:34:17" (1/1) ... [2020-09-24 19:34:18,068 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:34:17" (1/1) ... [2020-09-24 19:34:18,076 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:34:17" (1/1) ... [2020-09-24 19:34:18,077 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:34:17" (1/1) ... [2020-09-24 19:34:18,078 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 19:34:18,079 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 19:34:18,079 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 19:34:18,079 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 19:34:18,080 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:34:17" (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 [2020-09-24 19:34:18,154 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 19:34:18,154 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 19:34:18,154 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-24 19:34:18,155 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 19:34:18,155 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 19:34:18,155 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-24 19:34:18,155 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 19:34:18,155 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 19:34:18,156 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 19:34:18,356 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 19:34:18,356 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 19:34:18,361 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 07:34:18 BoogieIcfgContainer [2020-09-24 19:34:18,361 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 19:34:18,363 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 19:34:18,363 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 19:34:18,367 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 19:34:18,367 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 07:34:17" (1/3) ... [2020-09-24 19:34:18,368 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1520a21b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 07:34:18, skipping insertion in model container [2020-09-24 19:34:18,368 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:34:17" (2/3) ... [2020-09-24 19:34:18,369 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1520a21b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 07:34:18, skipping insertion in model container [2020-09-24 19:34:18,369 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 07:34:18" (3/3) ... [2020-09-24 19:34:18,371 INFO L109 eAbstractionObserver]: Analyzing ICFG underapprox_2-2.c [2020-09-24 19:34:18,383 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 19:34:18,395 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 19:34:18,428 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 19:34:18,465 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 19:34:18,466 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 19:34:18,466 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 19:34:18,466 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 19:34:18,467 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 19:34:18,467 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 19:34:18,467 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 19:34:18,467 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 19:34:18,492 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2020-09-24 19:34:18,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-09-24 19:34:18,500 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:34:18,501 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:34:18,502 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:34:18,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:34:18,511 INFO L82 PathProgramCache]: Analyzing trace with hash 493765703, now seen corresponding path program 1 times [2020-09-24 19:34:18,522 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:34:18,523 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [984315163] [2020-09-24 19:34:18,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:34:18,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:34:18,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:34:18,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:34:18,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-24 19:34:18,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:34:18,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-09-24 19:34:18,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:34:18,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:34:18,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-24 19:34:18,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:34:18,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 19:34:18,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:34:18,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:34:18,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:34:18,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:34:18,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:34:18,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:34:18,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 19:34:18,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:34:18,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:34:18,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:34:18,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:34:18,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:34:18,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:34:18,766 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [984315163] [2020-09-24 19:34:18,768 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:34:18,768 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-24 19:34:18,770 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595023429] [2020-09-24 19:34:18,777 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-09-24 19:34:18,778 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:34:18,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-09-24 19:34:18,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-24 19:34:18,800 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 2 states. [2020-09-24 19:34:18,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:34:18,833 INFO L93 Difference]: Finished difference Result 33 states and 36 transitions. [2020-09-24 19:34:18,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-09-24 19:34:18,835 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-09-24 19:34:18,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:34:18,844 INFO L225 Difference]: With dead ends: 33 [2020-09-24 19:34:18,845 INFO L226 Difference]: Without dead ends: 16 [2020-09-24 19:34:18,849 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-24 19:34:18,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-09-24 19:34:18,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-09-24 19:34:18,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-09-24 19:34:18,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2020-09-24 19:34:18,892 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 11 [2020-09-24 19:34:18,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:34:18,892 INFO L479 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2020-09-24 19:34:18,892 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-09-24 19:34:18,892 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2020-09-24 19:34:18,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-09-24 19:34:18,894 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:34:18,894 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:34:18,894 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 19:34:18,895 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:34:18,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:34:18,895 INFO L82 PathProgramCache]: Analyzing trace with hash 486377535, now seen corresponding path program 1 times [2020-09-24 19:34:18,895 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:34:18,896 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1354591773] [2020-09-24 19:34:18,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:34:18,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:34:18,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:34:18,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:34:18,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-24 19:34:18,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:34:18,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-09-24 19:34:18,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:34:18,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:34:18,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 19:34:18,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-24 19:34:18,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:34:19,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:34:19,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:34:19,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:34:19,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:34:19,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:34:19,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:34:19,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 19:34:19,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:34:19,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:34:19,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:34:19,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:34:19,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:34:19,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:34:19,081 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1354591773] [2020-09-24 19:34:19,082 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:34:19,082 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 19:34:19,082 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901064806] [2020-09-24 19:34:19,084 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 19:34:19,085 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:34:19,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 19:34:19,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 19:34:19,086 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 3 states. [2020-09-24 19:34:19,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:34:19,108 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2020-09-24 19:34:19,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 19:34:19,109 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-09-24 19:34:19,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:34:19,110 INFO L225 Difference]: With dead ends: 24 [2020-09-24 19:34:19,110 INFO L226 Difference]: Without dead ends: 19 [2020-09-24 19:34:19,111 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 19:34:19,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-09-24 19:34:19,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 17. [2020-09-24 19:34:19,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-09-24 19:34:19,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2020-09-24 19:34:19,117 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 11 [2020-09-24 19:34:19,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:34:19,117 INFO L479 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2020-09-24 19:34:19,118 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 19:34:19,118 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2020-09-24 19:34:19,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-24 19:34:19,119 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:34:19,119 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:34:19,119 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 19:34:19,119 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:34:19,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:34:19,120 INFO L82 PathProgramCache]: Analyzing trace with hash -1748013841, now seen corresponding path program 1 times [2020-09-24 19:34:19,120 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:34:19,121 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1930952329] [2020-09-24 19:34:19,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:34:19,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:34:19,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:34:19,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:34:19,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:34:19,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 19:34:19,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 19:34:19,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 360 [2020-09-24 19:34:19,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:34:19,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:34:19,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 19:34:19,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 19:34:19,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-24 19:34:19,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:34:19,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:34:19,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:34:19,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:34:19,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:34:19,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:34:19,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 19:34:19,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:34:19,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:34:19,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:34:19,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:34:19,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:34:19,604 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:34:19,604 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1930952329] [2020-09-24 19:34:19,604 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:34:19,605 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 19:34:19,605 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441326281] [2020-09-24 19:34:19,605 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 19:34:19,606 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:34:19,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 19:34:19,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 19:34:19,607 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 5 states. [2020-09-24 19:34:19,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:34:19,673 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2020-09-24 19:34:19,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 19:34:19,674 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-24 19:34:19,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:34:19,675 INFO L225 Difference]: With dead ends: 29 [2020-09-24 19:34:19,675 INFO L226 Difference]: Without dead ends: 24 [2020-09-24 19:34:19,676 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:34:19,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-09-24 19:34:19,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 22. [2020-09-24 19:34:19,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-09-24 19:34:19,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2020-09-24 19:34:19,682 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 16 [2020-09-24 19:34:19,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:34:19,683 INFO L479 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2020-09-24 19:34:19,683 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 19:34:19,683 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2020-09-24 19:34:19,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-24 19:34:19,684 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:34:19,684 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:34:19,684 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 19:34:19,685 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:34:19,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:34:19,685 INFO L82 PathProgramCache]: Analyzing trace with hash 1960900159, now seen corresponding path program 2 times [2020-09-24 19:34:19,685 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:34:19,686 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1328165188] [2020-09-24 19:34:19,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:34:19,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:34:19,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:34:19,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:34:20,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:34:20,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-24 19:34:20,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 19:34:20,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 497 [2020-09-24 19:34:20,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:34:20,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 19:34:20,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 19:34:20,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-24 19:34:20,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:34:20,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:34:20,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:34:20,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:34:20,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:34:20,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:34:20,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:34:20,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 19:34:20,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:34:20,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:34:20,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:34:20,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:34:20,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:34:20,307 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:34:20,307 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1328165188] [2020-09-24 19:34:20,307 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:34:20,307 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 19:34:20,308 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160902195] [2020-09-24 19:34:20,308 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:34:20,309 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:34:20,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:34:20,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:34:20,309 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand 7 states. [2020-09-24 19:34:20,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:34:20,410 INFO L93 Difference]: Finished difference Result 34 states and 34 transitions. [2020-09-24 19:34:20,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-24 19:34:20,410 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 21 [2020-09-24 19:34:20,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:34:20,411 INFO L225 Difference]: With dead ends: 34 [2020-09-24 19:34:20,411 INFO L226 Difference]: Without dead ends: 29 [2020-09-24 19:34:20,412 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-09-24 19:34:20,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-09-24 19:34:20,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2020-09-24 19:34:20,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-09-24 19:34:20,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2020-09-24 19:34:20,418 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 21 [2020-09-24 19:34:20,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:34:20,419 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2020-09-24 19:34:20,419 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 19:34:20,419 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2020-09-24 19:34:20,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-09-24 19:34:20,420 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:34:20,420 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:34:20,421 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 19:34:20,421 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:34:20,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:34:20,421 INFO L82 PathProgramCache]: Analyzing trace with hash 1793113839, now seen corresponding path program 3 times [2020-09-24 19:34:20,422 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:34:20,422 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [136175457] [2020-09-24 19:34:20,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:34:20,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:34:20,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:34:20,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:34:20,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:34:20,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-24 19:34:20,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 19:34:20,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 522 [2020-09-24 19:34:20,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:34:20,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 19:34:20,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-24 19:34:20,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-24 19:34:20,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:34:21,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:34:21,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:34:21,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:34:21,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:34:21,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:34:21,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:34:21,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 19:34:21,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:34:21,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:34:21,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:34:21,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:34:21,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:34:21,074 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-24 19:34:21,075 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [136175457] [2020-09-24 19:34:21,075 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:34:21,075 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-24 19:34:21,076 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557655918] [2020-09-24 19:34:21,076 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 19:34:21,077 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:34:21,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 19:34:21,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-09-24 19:34:21,078 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand 8 states. [2020-09-24 19:34:21,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:34:21,169 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2020-09-24 19:34:21,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-24 19:34:21,169 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 26 [2020-09-24 19:34:21,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:34:21,170 INFO L225 Difference]: With dead ends: 27 [2020-09-24 19:34:21,170 INFO L226 Difference]: Without dead ends: 0 [2020-09-24 19:34:21,171 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-09-24 19:34:21,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-24 19:34:21,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-24 19:34:21,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-24 19:34:21,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-24 19:34:21,172 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 26 [2020-09-24 19:34:21,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:34:21,172 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-24 19:34:21,172 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 19:34:21,173 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-24 19:34:21,173 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-24 19:34:21,173 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 19:34:21,176 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-24 19:34:21,242 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-24 19:34:21,242 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-24 19:34:21,242 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-24 19:34:21,242 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-24 19:34:21,242 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-24 19:34:21,243 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-24 19:34:21,243 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 10 20) the Hoare annotation is: true [2020-09-24 19:34:21,243 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 10 20) no Hoare annotation was computed. [2020-09-24 19:34:21,243 INFO L268 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2020-09-24 19:34:21,243 INFO L268 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-09-24 19:34:21,243 INFO L268 CegarLoopResult]: For program point L15-1(line 15) no Hoare annotation was computed. [2020-09-24 19:34:21,243 INFO L268 CegarLoopResult]: For program point L15-2(line 15) no Hoare annotation was computed. [2020-09-24 19:34:21,244 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 10 20) no Hoare annotation was computed. [2020-09-24 19:34:21,244 INFO L268 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed. [2020-09-24 19:34:21,244 INFO L264 CegarLoopResult]: At program point L14-2(lines 14 17) the Hoare annotation is: (<= main_~x~0 (+ (* 4294967296 (div main_~x~0 4294967296)) 6)) [2020-09-24 19:34:21,244 INFO L264 CegarLoopResult]: At program point L14-3(lines 14 17) the Hoare annotation is: (let ((.cse0 (* 4294967296 (div main_~x~0 4294967296)))) (and (< (+ .cse0 5) main_~x~0) (<= main_~x~0 (+ .cse0 6)))) [2020-09-24 19:34:21,244 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2020-09-24 19:34:21,244 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2020-09-24 19:34:21,245 INFO L268 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2020-09-24 19:34:21,245 INFO L268 CegarLoopResult]: For program point L4(lines 4 6) no Hoare annotation was computed. [2020-09-24 19:34:21,245 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-09-24 19:34:21,245 INFO L268 CegarLoopResult]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2020-09-24 19:34:21,267 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 07:34:21 BoogieIcfgContainer [2020-09-24 19:34:21,267 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 19:34:21,271 INFO L168 Benchmark]: Toolchain (without parser) took 3600.28 ms. Allocated memory was 147.3 MB in the beginning and 243.3 MB in the end (delta: 95.9 MB). Free memory was 103.8 MB in the beginning and 208.2 MB in the end (delta: -104.4 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-24 19:34:21,272 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 147.3 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-09-24 19:34:21,273 INFO L168 Benchmark]: CACSL2BoogieTranslator took 286.01 ms. Allocated memory is still 147.3 MB. Free memory was 103.1 MB in the beginning and 93.9 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB. [2020-09-24 19:34:21,274 INFO L168 Benchmark]: Boogie Preprocessor took 116.98 ms. Allocated memory was 147.3 MB in the beginning and 203.4 MB in the end (delta: 56.1 MB). Free memory was 93.9 MB in the beginning and 182.5 MB in the end (delta: -88.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. [2020-09-24 19:34:21,275 INFO L168 Benchmark]: RCFGBuilder took 283.05 ms. Allocated memory is still 203.4 MB. Free memory was 182.5 MB in the beginning and 170.7 MB in the end (delta: 11.9 MB). Peak memory consumption was 11.9 MB. Max. memory is 7.1 GB. [2020-09-24 19:34:21,276 INFO L168 Benchmark]: TraceAbstraction took 2904.34 ms. Allocated memory was 203.4 MB in the beginning and 243.3 MB in the end (delta: 39.8 MB). Free memory was 170.0 MB in the beginning and 208.2 MB in the end (delta: -38.2 MB). Peak memory consumption was 1.7 MB. Max. memory is 7.1 GB. [2020-09-24 19:34:21,280 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 147.3 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 286.01 ms. Allocated memory is still 147.3 MB. Free memory was 103.1 MB in the beginning and 93.9 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 116.98 ms. Allocated memory was 147.3 MB in the beginning and 203.4 MB in the end (delta: 56.1 MB). Free memory was 93.9 MB in the beginning and 182.5 MB in the end (delta: -88.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 283.05 ms. Allocated memory is still 203.4 MB. Free memory was 182.5 MB in the beginning and 170.7 MB in the end (delta: 11.9 MB). Peak memory consumption was 11.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2904.34 ms. Allocated memory was 203.4 MB in the beginning and 243.3 MB in the end (delta: 39.8 MB). Free memory was 170.0 MB in the beginning and 208.2 MB in the end (delta: -38.2 MB). Peak memory consumption was 1.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: x <= 4294967296 * (x / 4294967296) + 6 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 22 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.7s, OverallIterations: 5, TraceHistogramMax: 3, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 72 SDtfs, 20 SDslu, 138 SDs, 0 SdLazy, 78 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 44 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred in iteration=4, 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, 5 MinimizatonAttempts, 6 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 11 PreInvPairs, 15 NumberOfFragments, 33 HoareAnnotationTreeSize, 11 FomulaSimplifications, 43 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 17 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 85 NumberOfCodeBlocks, 85 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 80 ConstructedInterpolants, 0 QuantifiedInterpolants, 5760 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 18/26 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...