/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=5000 --traceabstraction.additional.smt.options interpolation-heuristic=DEEPEST --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/simple_3-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 01:10:15,086 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 01:10:15,090 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 01:10:15,120 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 01:10:15,120 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 01:10:15,121 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 01:10:15,123 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 01:10:15,125 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 01:10:15,127 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 01:10:15,128 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 01:10:15,129 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 01:10:15,130 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 01:10:15,130 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 01:10:15,131 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 01:10:15,133 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 01:10:15,134 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 01:10:15,136 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 01:10:15,137 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 01:10:15,139 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 01:10:15,141 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 01:10:15,143 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 01:10:15,144 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 01:10:15,145 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 01:10:15,147 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 01:10:15,149 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 01:10:15,149 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 01:10:15,150 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 01:10:15,151 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 01:10:15,151 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 01:10:15,152 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 01:10:15,152 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 01:10:15,153 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 01:10:15,154 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 01:10:15,155 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 01:10:15,156 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 01:10:15,157 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 01:10:15,157 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 01:10:15,158 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 01:10:15,158 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 01:10:15,159 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 01:10:15,160 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 01:10:15,161 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 [2020-09-25 01:10:15,209 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 01:10:15,210 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 01:10:15,211 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 01:10:15,211 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 01:10:15,212 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 01:10:15,212 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 01:10:15,212 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 01:10:15,212 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 01:10:15,212 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 01:10:15,213 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 01:10:15,213 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 01:10:15,213 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 01:10:15,213 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 01:10:15,213 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 01:10:15,214 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 01:10:15,214 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 01:10:15,214 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 01:10:15,214 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 01:10:15,214 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 01:10:15,215 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 01:10:15,216 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 01:10:15,216 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 01:10:15,216 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 01:10:15,216 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 01:10:15,217 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 01:10:15,217 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 01:10:15,217 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 01:10:15,217 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 01:10:15,217 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 01:10:15,217 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=5000;interpolation-heuristic=DEEPEST;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=5000;interpolation-heuristic=DEEPEST;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=5000;interpolation-heuristic=DEEPEST;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=5000;interpolation-heuristic=DEEPEST;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=5000;interpolation-heuristic=DEEPEST;log-additional-information=true; [2020-09-25 01:10:15,725 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 01:10:15,745 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 01:10:15,751 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 01:10:15,753 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 01:10:15,753 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 01:10:15,755 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-acceleration/simple_3-2.c [2020-09-25 01:10:15,852 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/921b1d023/4d56fbfe61f44fed80b951640de120d0/FLAGf229a01f3 [2020-09-25 01:10:16,399 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 01:10:16,400 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-acceleration/simple_3-2.c [2020-09-25 01:10:16,408 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/921b1d023/4d56fbfe61f44fed80b951640de120d0/FLAGf229a01f3 [2020-09-25 01:10:16,755 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/921b1d023/4d56fbfe61f44fed80b951640de120d0 [2020-09-25 01:10:16,771 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 01:10:16,780 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 01:10:16,783 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 01:10:16,783 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 01:10:16,787 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 01:10:16,788 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:10:16" (1/1) ... [2020-09-25 01:10:16,793 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3dbfc66d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:10:16, skipping insertion in model container [2020-09-25 01:10:16,794 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:10:16" (1/1) ... [2020-09-25 01:10:16,804 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 01:10:16,833 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 01:10:17,054 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 01:10:17,063 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 01:10:17,088 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 01:10:17,105 INFO L208 MainTranslator]: Completed translation [2020-09-25 01:10:17,106 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:10:17 WrapperNode [2020-09-25 01:10:17,106 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 01:10:17,107 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 01:10:17,107 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 01:10:17,107 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 01:10:17,121 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:10:17" (1/1) ... [2020-09-25 01:10:17,122 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:10:17" (1/1) ... [2020-09-25 01:10:17,127 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:10:17" (1/1) ... [2020-09-25 01:10:17,127 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:10:17" (1/1) ... [2020-09-25 01:10:17,131 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:10:17" (1/1) ... [2020-09-25 01:10:17,137 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:10:17" (1/1) ... [2020-09-25 01:10:17,138 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:10:17" (1/1) ... [2020-09-25 01:10:17,217 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 01:10:17,217 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 01:10:17,218 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 01:10:17,218 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 01:10:17,222 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:10:17" (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 [2020-09-25 01:10:17,290 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 01:10:17,290 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 01:10:17,291 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 01:10:17,291 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 01:10:17,291 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 01:10:17,291 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ushort [2020-09-25 01:10:17,292 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 01:10:17,292 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 01:10:17,292 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 01:10:17,292 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 01:10:17,476 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 01:10:17,476 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 01:10:17,480 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:10:17 BoogieIcfgContainer [2020-09-25 01:10:17,481 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 01:10:17,482 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 01:10:17,482 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 01:10:17,486 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 01:10:17,486 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:10:16" (1/3) ... [2020-09-25 01:10:17,487 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a860806 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:10:17, skipping insertion in model container [2020-09-25 01:10:17,487 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:10:17" (2/3) ... [2020-09-25 01:10:17,488 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a860806 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:10:17, skipping insertion in model container [2020-09-25 01:10:17,488 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:10:17" (3/3) ... [2020-09-25 01:10:17,490 INFO L109 eAbstractionObserver]: Analyzing ICFG simple_3-2.c [2020-09-25 01:10:17,501 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 01:10:17,512 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 01:10:17,531 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 01:10:17,568 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 01:10:17,569 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 01:10:17,570 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 01:10:17,571 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 01:10:17,571 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 01:10:17,571 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 01:10:17,572 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 01:10:17,572 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 01:10:17,601 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2020-09-25 01:10:17,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-25 01:10:17,610 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:10:17,611 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 01:10:17,612 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:10:17,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:10:17,619 INFO L82 PathProgramCache]: Analyzing trace with hash 1456818433, now seen corresponding path program 1 times [2020-09-25 01:10:17,629 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:10:17,629 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [527385389] [2020-09-25 01:10:17,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:10:17,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:10:17,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:17,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:17,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:10:17,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 01:10:17,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 01:10:17,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-09-25 01:10:17,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:10:17,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:10:17,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 01:10:17,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:10:17,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 01:10:17,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:10:17,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:10:17,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:17,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:10:17,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:10:17,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:10:17,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 01:10:17,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:10:17,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:10:17,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:10:17,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:10:17,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:10:17,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 01:10:17,909 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [527385389] [2020-09-25 01:10:17,912 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 01:10:17,912 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-25 01:10:17,913 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382784766] [2020-09-25 01:10:17,919 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-09-25 01:10:17,920 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:10:17,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-09-25 01:10:17,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-25 01:10:17,941 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 2 states. [2020-09-25 01:10:17,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:10:17,967 INFO L93 Difference]: Finished difference Result 31 states and 34 transitions. [2020-09-25 01:10:17,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-09-25 01:10:17,968 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2020-09-25 01:10:17,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:10:17,978 INFO L225 Difference]: With dead ends: 31 [2020-09-25 01:10:17,978 INFO L226 Difference]: Without dead ends: 14 [2020-09-25 01:10:17,982 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 [2020-09-25 01:10:17,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-09-25 01:10:18,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2020-09-25 01:10:18,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-09-25 01:10:18,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2020-09-25 01:10:18,020 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 12 [2020-09-25 01:10:18,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:10:18,021 INFO L479 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2020-09-25 01:10:18,021 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-09-25 01:10:18,021 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2020-09-25 01:10:18,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-25 01:10:18,022 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:10:18,022 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 01:10:18,024 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 01:10:18,025 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:10:18,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:10:18,026 INFO L82 PathProgramCache]: Analyzing trace with hash 1452200828, now seen corresponding path program 1 times [2020-09-25 01:10:18,027 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:10:18,027 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [835692127] [2020-09-25 01:10:18,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:10:18,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:10:18,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:18,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:10:18,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 01:10:18,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:10:18,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-09-25 01:10:18,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:10:18,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 01:10:18,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 01:10:18,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 01:10:18,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:10:18,687 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 17 [2020-09-25 01:10:18,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:10:18,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:10:18,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:18,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:10:18,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:10:18,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:10:18,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:10:18,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:10:18,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:10:18,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:10:18,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:10:18,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 01:10:18,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 01:10:18,734 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [835692127] [2020-09-25 01:10:18,734 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 01:10:18,735 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 01:10:18,735 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67280306] [2020-09-25 01:10:18,737 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 01:10:18,738 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:10:18,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 01:10:18,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 01:10:18,741 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 5 states. [2020-09-25 01:10:18,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:10:18,831 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2020-09-25 01:10:18,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 01:10:18,832 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-09-25 01:10:18,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:10:18,833 INFO L225 Difference]: With dead ends: 21 [2020-09-25 01:10:18,833 INFO L226 Difference]: Without dead ends: 16 [2020-09-25 01:10:18,835 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 01:10:18,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-09-25 01:10:18,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 15. [2020-09-25 01:10:18,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-09-25 01:10:18,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2020-09-25 01:10:18,840 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 12 [2020-09-25 01:10:18,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:10:18,841 INFO L479 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2020-09-25 01:10:18,841 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 01:10:18,841 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2020-09-25 01:10:18,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-25 01:10:18,842 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:10:18,842 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 01:10:18,842 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 01:10:18,842 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:10:18,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:10:18,843 INFO L82 PathProgramCache]: Analyzing trace with hash 866461499, now seen corresponding path program 1 times [2020-09-25 01:10:18,843 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:10:18,844 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1077276562] [2020-09-25 01:10:18,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:10:18,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:10:18,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:19,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:10:19,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 01:10:19,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:10:19,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 193 [2020-09-25 01:10:19,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:10:19,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 01:10:19,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 01:10:19,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 01:10:19,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:10:19,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:10:19,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:10:19,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:19,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:10:19,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:10:19,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:10:19,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 01:10:19,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:10:19,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:10:19,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:10:19,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:10:19,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:10:19,272 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 01:10:19,273 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1077276562] [2020-09-25 01:10:19,273 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 01:10:19,273 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 01:10:19,274 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060293462] [2020-09-25 01:10:19,274 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 01:10:19,275 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:10:19,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 01:10:19,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 01:10:19,276 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 6 states. [2020-09-25 01:10:19,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:10:19,360 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2020-09-25 01:10:19,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 01:10:19,361 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-09-25 01:10:19,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:10:19,361 INFO L225 Difference]: With dead ends: 16 [2020-09-25 01:10:19,361 INFO L226 Difference]: Without dead ends: 0 [2020-09-25 01:10:19,363 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-25 01:10:19,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-25 01:10:19,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-25 01:10:19,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-25 01:10:19,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-25 01:10:19,364 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2020-09-25 01:10:19,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:10:19,365 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-25 01:10:19,366 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 01:10:19,367 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-25 01:10:19,367 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-25 01:10:19,367 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 01:10:19,370 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-25 01:10:19,518 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-25 01:10:19,519 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-25 01:10:19,519 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-25 01:10:19,519 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-25 01:10:19,519 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-25 01:10:19,519 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-25 01:10:19,520 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 11 20) the Hoare annotation is: true [2020-09-25 01:10:19,520 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 11 20) no Hoare annotation was computed. [2020-09-25 01:10:19,520 INFO L268 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2020-09-25 01:10:19,520 INFO L268 CegarLoopResult]: For program point L13(line 13) no Hoare annotation was computed. [2020-09-25 01:10:19,520 INFO L264 CegarLoopResult]: At program point L15-2(lines 15 17) the Hoare annotation is: (let ((.cse0 (div main_~x~0 2))) (let ((.cse1 (div (+ (* .cse0 (- 2)) main_~x~0) 4294967296))) (or (and (< 0 .cse0) (<= main_~x~0 (+ (* 2 .cse0) (* 4294967296 .cse1)))) (and (<= 0 main_~x~0) (<= main_~x~0 (+ .cse0 (* 2147483648 .cse1))))))) [2020-09-25 01:10:19,521 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 11 20) no Hoare annotation was computed. [2020-09-25 01:10:19,521 INFO L268 CegarLoopResult]: For program point L13-1(line 13) no Hoare annotation was computed. [2020-09-25 01:10:19,521 INFO L264 CegarLoopResult]: At program point L15-3(lines 15 17) the Hoare annotation is: (<= main_~x~0 (let ((.cse0 (div main_~x~0 2))) (+ (* 2 .cse0) (* 4294967296 (div (+ (* .cse0 (- 2)) main_~x~0) 4294967296))))) [2020-09-25 01:10:19,521 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 4 9) the Hoare annotation is: true [2020-09-25 01:10:19,521 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 4 9) no Hoare annotation was computed. [2020-09-25 01:10:19,522 INFO L268 CegarLoopResult]: For program point L6(line 6) no Hoare annotation was computed. [2020-09-25 01:10:19,522 INFO L268 CegarLoopResult]: For program point L5(lines 5 7) no Hoare annotation was computed. [2020-09-25 01:10:19,522 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 6) no Hoare annotation was computed. [2020-09-25 01:10:19,522 INFO L268 CegarLoopResult]: For program point L5-2(lines 4 9) no Hoare annotation was computed. [2020-09-25 01:10:19,545 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 01:10:19 BoogieIcfgContainer [2020-09-25 01:10:19,545 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 01:10:19,548 INFO L168 Benchmark]: Toolchain (without parser) took 2774.87 ms. Allocated memory was 140.5 MB in the beginning and 233.8 MB in the end (delta: 93.3 MB). Free memory was 103.7 MB in the beginning and 191.6 MB in the end (delta: -87.9 MB). Peak memory consumption was 5.4 MB. Max. memory is 7.1 GB. [2020-09-25 01:10:19,549 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-25 01:10:19,550 INFO L168 Benchmark]: CACSL2BoogieTranslator took 324.11 ms. Allocated memory is still 140.5 MB. Free memory was 103.0 MB in the beginning and 93.8 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB. [2020-09-25 01:10:19,552 INFO L168 Benchmark]: Boogie Preprocessor took 110.07 ms. Allocated memory was 140.5 MB in the beginning and 202.4 MB in the end (delta: 61.9 MB). Free memory was 93.8 MB in the beginning and 182.4 MB in the end (delta: -88.6 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. [2020-09-25 01:10:19,553 INFO L168 Benchmark]: RCFGBuilder took 263.24 ms. Allocated memory is still 202.4 MB. Free memory was 182.4 MB in the beginning and 170.2 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 7.1 GB. [2020-09-25 01:10:19,554 INFO L168 Benchmark]: TraceAbstraction took 2063.93 ms. Allocated memory was 202.4 MB in the beginning and 233.8 MB in the end (delta: 31.5 MB). Free memory was 169.6 MB in the beginning and 191.6 MB in the end (delta: -22.0 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. [2020-09-25 01:10:19,558 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 324.11 ms. Allocated memory is still 140.5 MB. Free memory was 103.0 MB in the beginning and 93.8 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 110.07 ms. Allocated memory was 140.5 MB in the beginning and 202.4 MB in the end (delta: 61.9 MB). Free memory was 93.8 MB in the beginning and 182.4 MB in the end (delta: -88.6 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 263.24 ms. Allocated memory is still 202.4 MB. Free memory was 182.4 MB in the beginning and 170.2 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2063.93 ms. Allocated memory was 202.4 MB in the beginning and 233.8 MB in the end (delta: 31.5 MB). Free memory was 169.6 MB in the beginning and 191.6 MB in the end (delta: -22.0 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 6]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: (0 < x / 2 && x <= 2 * (x / 2) + 4294967296 * ((x / 2 * -2 + x) / 4294967296)) || (0 <= x && x <= x / 2 + 2147483648 * ((x / 2 * -2 + x) / 4294967296)) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 20 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.8s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 38 SDtfs, 4 SDslu, 52 SDs, 0 SdLazy, 42 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=0, 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, 3 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 9 PreInvPairs, 12 NumberOfFragments, 71 HoareAnnotationTreeSize, 9 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 66 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 38 NumberOfCodeBlocks, 38 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 35 ConstructedInterpolants, 0 QuantifiedInterpolants, 3075 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 0/1 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...