/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options 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-lit/cggmp2005_variant.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 12:36:20,785 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 12:36:20,790 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 12:36:20,835 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 12:36:20,836 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 12:36:20,844 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 12:36:20,847 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 12:36:20,851 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 12:36:20,853 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 12:36:20,859 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 12:36:20,860 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 12:36:20,861 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 12:36:20,862 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 12:36:20,865 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 12:36:20,868 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 12:36:20,869 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 12:36:20,871 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 12:36:20,873 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 12:36:20,875 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 12:36:20,883 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 12:36:20,886 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 12:36:20,887 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 12:36:20,888 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 12:36:20,889 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 12:36:20,901 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 12:36:20,901 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 12:36:20,901 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 12:36:20,903 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 12:36:20,909 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 12:36:20,911 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 12:36:20,911 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 12:36:20,912 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 12:36:20,913 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 12:36:20,913 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 12:36:20,914 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 12:36:20,915 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 12:36:20,916 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 12:36:20,916 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 12:36:20,916 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 12:36:20,917 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 12:36:20,918 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 12:36:20,921 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 [2020-09-21 12:36:20,948 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 12:36:20,949 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 12:36:20,950 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 12:36:20,950 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 12:36:20,950 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 12:36:20,951 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 12:36:20,951 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 12:36:20,951 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 12:36:20,951 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 12:36:20,952 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 12:36:20,952 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 12:36:20,952 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 12:36:20,952 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 12:36:20,952 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 12:36:20,953 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 12:36:20,953 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 12:36:20,953 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 12:36:20,953 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 12:36:20,953 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 12:36:20,954 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 12:36:20,954 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 12:36:20,954 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 12:36:20,954 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 12:36:20,955 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 12:36:20,955 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 12:36:20,955 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 12:36:20,955 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 12:36:20,955 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 12:36:20,956 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 12:36:20,956 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> 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; [2020-09-21 12:36:21,393 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 12:36:21,415 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 12:36:21,419 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 12:36:21,421 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 12:36:21,422 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 12:36:21,423 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/cggmp2005_variant.i [2020-09-21 12:36:21,513 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9686310f7/466e1636ee8246578d3f53a1fa3e6090/FLAG8f495eaf7 [2020-09-21 12:36:22,054 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 12:36:22,055 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-lit/cggmp2005_variant.i [2020-09-21 12:36:22,063 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9686310f7/466e1636ee8246578d3f53a1fa3e6090/FLAG8f495eaf7 [2020-09-21 12:36:22,417 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9686310f7/466e1636ee8246578d3f53a1fa3e6090 [2020-09-21 12:36:22,431 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 12:36:22,437 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 12:36:22,439 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 12:36:22,439 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 12:36:22,443 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 12:36:22,444 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:36:22" (1/1) ... [2020-09-21 12:36:22,451 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a04e0c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:36:22, skipping insertion in model container [2020-09-21 12:36:22,451 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:36:22" (1/1) ... [2020-09-21 12:36:22,461 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 12:36:22,494 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 12:36:22,703 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 12:36:22,709 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 12:36:22,730 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 12:36:22,748 INFO L208 MainTranslator]: Completed translation [2020-09-21 12:36:22,749 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:36:22 WrapperNode [2020-09-21 12:36:22,749 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 12:36:22,750 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 12:36:22,750 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 12:36:22,750 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 12:36:22,767 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:36:22" (1/1) ... [2020-09-21 12:36:22,767 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:36:22" (1/1) ... [2020-09-21 12:36:22,773 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:36:22" (1/1) ... [2020-09-21 12:36:22,774 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:36:22" (1/1) ... [2020-09-21 12:36:22,777 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:36:22" (1/1) ... [2020-09-21 12:36:22,782 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:36:22" (1/1) ... [2020-09-21 12:36:22,783 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:36:22" (1/1) ... [2020-09-21 12:36:22,860 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 12:36:22,861 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 12:36:22,861 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 12:36:22,861 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 12:36:22,863 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:36:22" (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 [2020-09-21 12:36:22,935 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 12:36:22,936 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 12:36:22,936 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-21 12:36:22,936 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-21 12:36:22,936 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 12:36:22,937 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 12:36:22,937 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-21 12:36:22,937 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-21 12:36:22,937 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-21 12:36:22,937 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-21 12:36:22,938 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 12:36:22,938 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 12:36:22,938 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 12:36:23,146 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 12:36:23,146 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-21 12:36:23,151 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:36:23 BoogieIcfgContainer [2020-09-21 12:36:23,152 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 12:36:23,153 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 12:36:23,153 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 12:36:23,157 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 12:36:23,158 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 12:36:22" (1/3) ... [2020-09-21 12:36:23,159 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e91110f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:36:23, skipping insertion in model container [2020-09-21 12:36:23,159 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:36:22" (2/3) ... [2020-09-21 12:36:23,159 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e91110f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:36:23, skipping insertion in model container [2020-09-21 12:36:23,160 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:36:23" (3/3) ... [2020-09-21 12:36:23,162 INFO L109 eAbstractionObserver]: Analyzing ICFG cggmp2005_variant.i [2020-09-21 12:36:23,176 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 12:36:23,191 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 12:36:23,218 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 12:36:23,255 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 12:36:23,256 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 12:36:23,256 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 12:36:23,256 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 12:36:23,256 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 12:36:23,257 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 12:36:23,257 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 12:36:23,257 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 12:36:23,296 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2020-09-21 12:36:23,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-09-21 12:36:23,304 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:36:23,305 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:36:23,306 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:36:23,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:36:23,315 INFO L82 PathProgramCache]: Analyzing trace with hash 1608903343, now seen corresponding path program 1 times [2020-09-21 12:36:23,327 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:36:23,343 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [937047687] [2020-09-21 12:36:23,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:36:23,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:36:23,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:36:23,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:36:23,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-21 12:36:23,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:36:23,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-09-21 12:36:23,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:36:23,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:36:23,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-21 12:36:23,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 12:36:23,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-21 12:36:23,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:36:23,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:36:23,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:36:23,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:36:23,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:36:23,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:36:23,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:36:23,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:36:23,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:36:23,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:36:23,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:36:23,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:36:23,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:36:23,647 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [937047687] [2020-09-21 12:36:23,649 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:36:23,650 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 12:36:23,651 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146693867] [2020-09-21 12:36:23,656 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 12:36:23,657 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:36:23,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 12:36:23,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 12:36:23,674 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 3 states. [2020-09-21 12:36:23,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:36:23,721 INFO L93 Difference]: Finished difference Result 32 states and 38 transitions. [2020-09-21 12:36:23,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 12:36:23,732 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-09-21 12:36:23,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:36:23,749 INFO L225 Difference]: With dead ends: 32 [2020-09-21 12:36:23,749 INFO L226 Difference]: Without dead ends: 13 [2020-09-21 12:36:23,753 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 [2020-09-21 12:36:23,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2020-09-21 12:36:23,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2020-09-21 12:36:23,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-09-21 12:36:23,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2020-09-21 12:36:23,798 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2020-09-21 12:36:23,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:36:23,799 INFO L479 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2020-09-21 12:36:23,799 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 12:36:23,799 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2020-09-21 12:36:23,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-21 12:36:23,800 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:36:23,800 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:36:23,800 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 12:36:23,800 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:36:23,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:36:23,801 INFO L82 PathProgramCache]: Analyzing trace with hash -1628066164, now seen corresponding path program 1 times [2020-09-21 12:36:23,801 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:36:23,802 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [842259032] [2020-09-21 12:36:23,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:36:23,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:36:23,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:36:23,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:36:23,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-21 12:36:23,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:36:23,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-09-21 12:36:23,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:36:23,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-21 12:36:23,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-21 12:36:23,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-21 12:36:23,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:36:24,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:36:24,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:36:24,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:36:24,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:36:24,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:36:24,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:36:24,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:36:24,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:36:24,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:36:24,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:36:24,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:36:24,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:36:24,103 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:36:24,104 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [842259032] [2020-09-21 12:36:24,104 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:36:24,104 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-21 12:36:24,104 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751261130] [2020-09-21 12:36:24,106 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-21 12:36:24,107 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:36:24,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-21 12:36:24,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-21 12:36:24,108 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 8 states. [2020-09-21 12:36:24,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:36:24,226 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2020-09-21 12:36:24,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-21 12:36:24,227 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 12 [2020-09-21 12:36:24,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:36:24,228 INFO L225 Difference]: With dead ends: 19 [2020-09-21 12:36:24,228 INFO L226 Difference]: Without dead ends: 14 [2020-09-21 12:36:24,229 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-09-21 12:36:24,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-09-21 12:36:24,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2020-09-21 12:36:24,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-09-21 12:36:24,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2020-09-21 12:36:24,234 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 12 [2020-09-21 12:36:24,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:36:24,234 INFO L479 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2020-09-21 12:36:24,235 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-21 12:36:24,235 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2020-09-21 12:36:24,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-21 12:36:24,235 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:36:24,236 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:36:24,236 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 12:36:24,236 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:36:24,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:36:24,237 INFO L82 PathProgramCache]: Analyzing trace with hash 1105094223, now seen corresponding path program 2 times [2020-09-21 12:36:24,237 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:36:24,237 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [171643484] [2020-09-21 12:36:24,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:36:24,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:36:24,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:36:24,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:36:24,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-21 12:36:24,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:36:24,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-09-21 12:36:24,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:36:24,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-21 12:36:24,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-21 12:36:24,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-21 12:36:24,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:36:24,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:36:24,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:36:24,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:36:24,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:36:24,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:36:24,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:36:24,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:36:24,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:36:24,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:36:24,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:36:24,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:36:24,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:36:24,553 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:36:24,553 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [171643484] [2020-09-21 12:36:24,554 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:36:24,554 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-21 12:36:24,555 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143245638] [2020-09-21 12:36:24,555 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-21 12:36:24,555 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:36:24,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-21 12:36:24,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-21 12:36:24,557 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 9 states. [2020-09-21 12:36:24,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:36:24,663 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2020-09-21 12:36:24,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-21 12:36:24,664 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 13 [2020-09-21 12:36:24,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:36:24,664 INFO L225 Difference]: With dead ends: 14 [2020-09-21 12:36:24,664 INFO L226 Difference]: Without dead ends: 0 [2020-09-21 12:36:24,665 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2020-09-21 12:36:24,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-21 12:36:24,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-21 12:36:24,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-21 12:36:24,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-21 12:36:24,666 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2020-09-21 12:36:24,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:36:24,667 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-21 12:36:24,667 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-21 12:36:24,667 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-21 12:36:24,667 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-21 12:36:24,667 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-21 12:36:24,670 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-21 12:36:24,724 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-21 12:36:24,725 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-21 12:36:24,725 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-21 12:36:24,725 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-21 12:36:24,725 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-21 12:36:24,725 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-21 12:36:24,726 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-09-21 12:36:24,726 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-09-21 12:36:24,726 INFO L268 CegarLoopResult]: For program point L4-2(lines 3 5) no Hoare annotation was computed. [2020-09-21 12:36:24,726 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-09-21 12:36:24,726 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 13 26) the Hoare annotation is: true [2020-09-21 12:36:24,726 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 13 26) no Hoare annotation was computed. [2020-09-21 12:36:24,726 INFO L268 CegarLoopResult]: For program point L24(line 24) no Hoare annotation was computed. [2020-09-21 12:36:24,727 INFO L268 CegarLoopResult]: For program point L17(line 17) no Hoare annotation was computed. [2020-09-21 12:36:24,727 INFO L264 CegarLoopResult]: At program point L19-2(lines 19 23) the Hoare annotation is: (let ((.cse0 (+ (* 2 main_~mid~0) main_~lo~0))) (and (<= main_~hi~0 .cse0) (or (= main_~hi~0 main_~lo~0) (<= 1 main_~mid~0)) (<= .cse0 main_~hi~0))) [2020-09-21 12:36:24,727 INFO L264 CegarLoopResult]: At program point L19-3(lines 19 23) the Hoare annotation is: (and (= main_~hi~0 main_~lo~0) (<= (+ (* 2 main_~mid~0) main_~lo~0) main_~hi~0)) [2020-09-21 12:36:24,727 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 13 26) no Hoare annotation was computed. [2020-09-21 12:36:24,727 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-09-21 12:36:24,727 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 6 11) no Hoare annotation was computed. [2020-09-21 12:36:24,728 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-09-21 12:36:24,728 INFO L268 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-09-21 12:36:24,728 INFO L268 CegarLoopResult]: For program point L7-2(lines 6 11) no Hoare annotation was computed. [2020-09-21 12:36:24,728 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-09-21 12:36:24,760 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 12:36:24 BoogieIcfgContainer [2020-09-21 12:36:24,760 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-21 12:36:24,767 INFO L168 Benchmark]: Toolchain (without parser) took 2329.53 ms. Allocated memory was 141.0 MB in the beginning and 233.8 MB in the end (delta: 92.8 MB). Free memory was 104.7 MB in the beginning and 184.0 MB in the end (delta: -79.3 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. [2020-09-21 12:36:24,768 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.2 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. [2020-09-21 12:36:24,769 INFO L168 Benchmark]: CACSL2BoogieTranslator took 311.21 ms. Allocated memory is still 141.0 MB. Free memory was 103.9 MB in the beginning and 94.5 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. [2020-09-21 12:36:24,771 INFO L168 Benchmark]: Boogie Preprocessor took 110.53 ms. Allocated memory was 141.0 MB in the beginning and 203.4 MB in the end (delta: 62.4 MB). Free memory was 94.5 MB in the beginning and 183.2 MB in the end (delta: -88.6 MB). Peak memory consumption was 13.3 MB. Max. memory is 7.1 GB. [2020-09-21 12:36:24,772 INFO L168 Benchmark]: RCFGBuilder took 291.02 ms. Allocated memory is still 203.4 MB. Free memory was 183.2 MB in the beginning and 170.1 MB in the end (delta: 13.1 MB). Peak memory consumption was 13.1 MB. Max. memory is 7.1 GB. [2020-09-21 12:36:24,779 INFO L168 Benchmark]: TraceAbstraction took 1607.17 ms. Allocated memory was 203.4 MB in the beginning and 233.8 MB in the end (delta: 30.4 MB). Free memory was 170.1 MB in the beginning and 184.0 MB in the end (delta: -14.0 MB). Peak memory consumption was 16.4 MB. Max. memory is 7.1 GB. [2020-09-21 12:36:24,790 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.2 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 311.21 ms. Allocated memory is still 141.0 MB. Free memory was 103.9 MB in the beginning and 94.5 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 110.53 ms. Allocated memory was 141.0 MB in the beginning and 203.4 MB in the end (delta: 62.4 MB). Free memory was 94.5 MB in the beginning and 183.2 MB in the end (delta: -88.6 MB). Peak memory consumption was 13.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 291.02 ms. Allocated memory is still 203.4 MB. Free memory was 183.2 MB in the beginning and 170.1 MB in the end (delta: 13.1 MB). Peak memory consumption was 13.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1607.17 ms. Allocated memory was 203.4 MB in the beginning and 233.8 MB in the end (delta: 30.4 MB). Free memory was 170.1 MB in the beginning and 184.0 MB in the end (delta: -14.0 MB). Peak memory consumption was 16.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 8]: 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: 19]: Loop Invariant Derived loop invariant: (hi <= 2 * mid + lo && (hi == lo || 1 <= mid)) && 2 * mid + lo <= hi - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 23 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.4s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 35 SDtfs, 7 SDslu, 85 SDs, 0 SdLazy, 47 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 33 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred 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, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 9 PreInvPairs, 12 NumberOfFragments, 38 HoareAnnotationTreeSize, 9 FomulaSimplifications, 77 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 36 NumberOfCodeBlocks, 36 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 33 ConstructedInterpolants, 0 QuantifiedInterpolants, 1587 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 0/4 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...