/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/verifythis/elimination_max_rec_onepoint.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 19:45:25,927 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 19:45:25,930 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 19:45:25,967 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 19:45:25,967 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 19:45:25,976 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 19:45:25,979 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 19:45:25,983 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 19:45:25,987 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 19:45:25,990 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 19:45:25,991 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 19:45:25,993 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 19:45:25,993 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 19:45:25,997 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 19:45:25,999 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 19:45:26,001 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 19:45:26,002 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 19:45:26,003 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 19:45:26,005 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 19:45:26,013 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 19:45:26,015 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 19:45:26,016 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 19:45:26,017 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 19:45:26,018 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 19:45:26,030 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 19:45:26,031 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 19:45:26,035 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 19:45:26,036 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 19:45:26,036 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 19:45:26,040 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 19:45:26,040 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 19:45:26,041 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 19:45:26,041 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 19:45:26,045 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 19:45:26,046 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 19:45:26,047 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 19:45:26,047 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 19:45:26,047 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 19:45:26,048 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 19:45:26,051 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 19:45:26,051 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 19:45:26,052 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-21 19:45:26,100 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 19:45:26,100 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 19:45:26,101 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 19:45:26,102 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 19:45:26,102 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 19:45:26,102 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 19:45:26,102 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 19:45:26,102 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 19:45:26,103 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 19:45:26,104 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 19:45:26,104 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 19:45:26,105 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 19:45:26,105 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 19:45:26,105 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 19:45:26,106 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 19:45:26,106 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 19:45:26,106 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 19:45:26,106 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 19:45:26,106 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 19:45:26,107 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 19:45:26,107 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 19:45:26,107 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 19:45:26,108 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 19:45:26,108 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 19:45:26,108 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 19:45:26,108 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 19:45:26,108 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 19:45:26,108 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 19:45:26,109 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 19:45:26,109 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; [2020-08-21 19:45:26,448 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 19:45:26,461 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 19:45:26,467 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 19:45:26,468 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 19:45:26,468 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 19:45:26,469 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/verifythis/elimination_max_rec_onepoint.c [2020-08-21 19:45:26,535 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3491fd8de/bdad1e0beeb74f4db89eba333954e48d/FLAG0dda854f0 [2020-08-21 19:45:26,982 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 19:45:26,982 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/verifythis/elimination_max_rec_onepoint.c [2020-08-21 19:45:26,989 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3491fd8de/bdad1e0beeb74f4db89eba333954e48d/FLAG0dda854f0 [2020-08-21 19:45:27,388 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3491fd8de/bdad1e0beeb74f4db89eba333954e48d [2020-08-21 19:45:27,397 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 19:45:27,399 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 19:45:27,401 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 19:45:27,401 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 19:45:27,405 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 19:45:27,406 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 07:45:27" (1/1) ... [2020-08-21 19:45:27,409 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15f5f327 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:45:27, skipping insertion in model container [2020-08-21 19:45:27,409 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 07:45:27" (1/1) ... [2020-08-21 19:45:27,417 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 19:45:27,440 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 19:45:27,633 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 19:45:27,647 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 19:45:27,670 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 19:45:27,687 INFO L208 MainTranslator]: Completed translation [2020-08-21 19:45:27,688 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:45:27 WrapperNode [2020-08-21 19:45:27,688 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 19:45:27,689 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 19:45:27,689 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 19:45:27,689 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 19:45:27,780 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:45:27" (1/1) ... [2020-08-21 19:45:27,782 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:45:27" (1/1) ... [2020-08-21 19:45:27,800 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:45:27" (1/1) ... [2020-08-21 19:45:27,801 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:45:27" (1/1) ... [2020-08-21 19:45:27,818 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:45:27" (1/1) ... [2020-08-21 19:45:27,820 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:45:27" (1/1) ... [2020-08-21 19:45:27,826 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:45:27" (1/1) ... [2020-08-21 19:45:27,828 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 19:45:27,829 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 19:45:27,829 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 19:45:27,829 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 19:45:27,830 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:45:27" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 19:45:27,892 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 19:45:27,892 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 19:45:27,892 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-21 19:45:27,893 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-21 19:45:27,893 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-08-21 19:45:27,895 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 19:45:27,895 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-08-21 19:45:27,895 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-08-21 19:45:27,895 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 19:45:27,895 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 19:45:27,896 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-21 19:45:27,896 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-21 19:45:27,896 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-21 19:45:27,896 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 19:45:27,896 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-08-21 19:45:27,896 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 19:45:27,897 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 19:45:27,897 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 19:45:27,897 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-08-21 19:45:27,897 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 19:45:27,897 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 19:45:27,897 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 19:45:27,897 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 19:45:28,201 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 19:45:28,201 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-21 19:45:28,206 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 07:45:28 BoogieIcfgContainer [2020-08-21 19:45:28,206 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 19:45:28,207 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 19:45:28,207 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 19:45:28,210 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 19:45:28,211 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 07:45:27" (1/3) ... [2020-08-21 19:45:28,212 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3629c4f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 07:45:28, skipping insertion in model container [2020-08-21 19:45:28,212 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:45:27" (2/3) ... [2020-08-21 19:45:28,212 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3629c4f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 07:45:28, skipping insertion in model container [2020-08-21 19:45:28,212 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 07:45:28" (3/3) ... [2020-08-21 19:45:28,214 INFO L109 eAbstractionObserver]: Analyzing ICFG elimination_max_rec_onepoint.c [2020-08-21 19:45:28,224 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 19:45:28,231 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 19:45:28,246 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 19:45:28,269 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 19:45:28,270 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 19:45:28,270 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 19:45:28,270 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 19:45:28,270 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 19:45:28,270 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 19:45:28,270 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 19:45:28,270 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 19:45:28,291 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2020-08-21 19:45:28,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-08-21 19:45:28,298 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:45:28,299 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 19:45:28,299 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:45:28,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:45:28,305 INFO L82 PathProgramCache]: Analyzing trace with hash -640327596, now seen corresponding path program 1 times [2020-08-21 19:45:28,312 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:45:28,312 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [663787644] [2020-08-21 19:45:28,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:45:28,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:45:28,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:45:28,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:45:28,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 19:45:28,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:45:28,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 19:45:28,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:45:28,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 19:45:28,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:45:28,525 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-21 19:45:28,527 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [663787644] [2020-08-21 19:45:28,529 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 19:45:28,529 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 19:45:28,531 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192393030] [2020-08-21 19:45:28,537 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 19:45:28,538 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:45:28,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 19:45:28,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 19:45:28,559 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 4 states. [2020-08-21 19:45:28,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:45:28,798 INFO L93 Difference]: Finished difference Result 83 states and 106 transitions. [2020-08-21 19:45:28,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 19:45:28,801 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2020-08-21 19:45:28,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:45:28,812 INFO L225 Difference]: With dead ends: 83 [2020-08-21 19:45:28,812 INFO L226 Difference]: Without dead ends: 40 [2020-08-21 19:45:28,817 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-21 19:45:28,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-08-21 19:45:28,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2020-08-21 19:45:28,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-08-21 19:45:28,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 46 transitions. [2020-08-21 19:45:28,868 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 46 transitions. Word has length 30 [2020-08-21 19:45:28,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:45:28,872 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 46 transitions. [2020-08-21 19:45:28,872 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 19:45:28,872 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 46 transitions. [2020-08-21 19:45:28,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-08-21 19:45:28,875 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:45:28,876 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 19:45:28,877 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 19:45:28,877 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:45:28,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:45:28,878 INFO L82 PathProgramCache]: Analyzing trace with hash -1442541232, now seen corresponding path program 1 times [2020-08-21 19:45:28,879 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:45:28,879 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [654180700] [2020-08-21 19:45:28,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:45:28,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:45:29,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:45:29,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:45:29,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 19:45:29,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:45:29,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 19:45:29,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:45:29,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 19:45:29,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:45:29,071 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-21 19:45:29,072 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [654180700] [2020-08-21 19:45:29,072 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 19:45:29,072 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 19:45:29,073 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025595034] [2020-08-21 19:45:29,075 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 19:45:29,075 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:45:29,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 19:45:29,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-08-21 19:45:29,076 INFO L87 Difference]: Start difference. First operand 40 states and 46 transitions. Second operand 8 states. [2020-08-21 19:45:29,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:45:29,541 INFO L93 Difference]: Finished difference Result 64 states and 77 transitions. [2020-08-21 19:45:29,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-21 19:45:29,542 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 30 [2020-08-21 19:45:29,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:45:29,547 INFO L225 Difference]: With dead ends: 64 [2020-08-21 19:45:29,547 INFO L226 Difference]: Without dead ends: 62 [2020-08-21 19:45:29,548 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-21 19:45:29,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-08-21 19:45:29,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 57. [2020-08-21 19:45:29,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-08-21 19:45:29,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 68 transitions. [2020-08-21 19:45:29,567 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 68 transitions. Word has length 30 [2020-08-21 19:45:29,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:45:29,567 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 68 transitions. [2020-08-21 19:45:29,567 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 19:45:29,567 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 68 transitions. [2020-08-21 19:45:29,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-08-21 19:45:29,569 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:45:29,569 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 19:45:29,569 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 19:45:29,570 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:45:29,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:45:29,570 INFO L82 PathProgramCache]: Analyzing trace with hash 389656800, now seen corresponding path program 1 times [2020-08-21 19:45:29,570 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:45:29,571 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [909636383] [2020-08-21 19:45:29,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:45:29,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:45:29,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:45:29,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:45:29,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 19:45:29,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:45:29,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 19:45:29,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:45:29,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 19:45:29,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:45:29,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-21 19:45:29,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:45:29,791 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-21 19:45:29,792 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [909636383] [2020-08-21 19:45:29,793 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 19:45:29,793 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-21 19:45:29,793 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109591007] [2020-08-21 19:45:29,794 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 19:45:29,794 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:45:29,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 19:45:29,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-08-21 19:45:29,795 INFO L87 Difference]: Start difference. First operand 57 states and 68 transitions. Second operand 10 states. [2020-08-21 19:45:30,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:45:30,188 INFO L93 Difference]: Finished difference Result 63 states and 73 transitions. [2020-08-21 19:45:30,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-21 19:45:30,189 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 33 [2020-08-21 19:45:30,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:45:30,191 INFO L225 Difference]: With dead ends: 63 [2020-08-21 19:45:30,191 INFO L226 Difference]: Without dead ends: 55 [2020-08-21 19:45:30,192 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2020-08-21 19:45:30,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-08-21 19:45:30,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-08-21 19:45:30,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-08-21 19:45:30,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 65 transitions. [2020-08-21 19:45:30,207 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 65 transitions. Word has length 33 [2020-08-21 19:45:30,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:45:30,207 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 65 transitions. [2020-08-21 19:45:30,207 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 19:45:30,208 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 65 transitions. [2020-08-21 19:45:30,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-08-21 19:45:30,209 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:45:30,210 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 19:45:30,210 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 19:45:30,210 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:45:30,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:45:30,211 INFO L82 PathProgramCache]: Analyzing trace with hash 1379492317, now seen corresponding path program 1 times [2020-08-21 19:45:30,211 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:45:30,211 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [725865] [2020-08-21 19:45:30,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:45:30,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:45:30,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:45:30,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:45:30,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 19:45:30,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:45:30,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 19:45:30,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:45:30,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 19:45:30,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:45:30,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-21 19:45:30,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:45:30,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-08-21 19:45:30,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:45:30,399 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-08-21 19:45:30,399 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [725865] [2020-08-21 19:45:30,400 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 19:45:30,400 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-21 19:45:30,400 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384668151] [2020-08-21 19:45:30,401 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 19:45:30,401 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:45:30,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 19:45:30,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-08-21 19:45:30,402 INFO L87 Difference]: Start difference. First operand 55 states and 65 transitions. Second operand 10 states. [2020-08-21 19:45:30,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:45:30,894 INFO L93 Difference]: Finished difference Result 66 states and 76 transitions. [2020-08-21 19:45:30,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-21 19:45:30,894 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 45 [2020-08-21 19:45:30,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:45:30,896 INFO L225 Difference]: With dead ends: 66 [2020-08-21 19:45:30,896 INFO L226 Difference]: Without dead ends: 64 [2020-08-21 19:45:30,897 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=264, Unknown=0, NotChecked=0, Total=342 [2020-08-21 19:45:30,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-08-21 19:45:30,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 42. [2020-08-21 19:45:30,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-08-21 19:45:30,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 46 transitions. [2020-08-21 19:45:30,906 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 46 transitions. Word has length 45 [2020-08-21 19:45:30,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:45:30,907 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 46 transitions. [2020-08-21 19:45:30,907 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 19:45:30,907 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 46 transitions. [2020-08-21 19:45:30,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-08-21 19:45:30,909 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:45:30,909 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 19:45:30,909 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 19:45:30,909 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:45:30,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:45:30,910 INFO L82 PathProgramCache]: Analyzing trace with hash -1445821128, now seen corresponding path program 1 times [2020-08-21 19:45:30,910 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:45:30,911 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1290773791] [2020-08-21 19:45:30,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:45:30,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:45:31,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:45:31,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:45:31,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 19:45:31,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:45:31,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 19:45:31,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:45:31,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 19:45:31,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:45:31,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-21 19:45:31,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:45:31,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-08-21 19:45:31,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:45:31,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 19:45:31,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:45:31,082 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-08-21 19:45:31,082 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1290773791] [2020-08-21 19:45:31,083 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 19:45:31,083 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-21 19:45:31,083 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400535378] [2020-08-21 19:45:31,087 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 19:45:31,087 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:45:31,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 19:45:31,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-08-21 19:45:31,088 INFO L87 Difference]: Start difference. First operand 42 states and 46 transitions. Second operand 10 states. [2020-08-21 19:45:31,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:45:31,417 INFO L93 Difference]: Finished difference Result 68 states and 75 transitions. [2020-08-21 19:45:31,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-21 19:45:31,417 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 48 [2020-08-21 19:45:31,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:45:31,419 INFO L225 Difference]: With dead ends: 68 [2020-08-21 19:45:31,419 INFO L226 Difference]: Without dead ends: 42 [2020-08-21 19:45:31,420 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2020-08-21 19:45:31,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-08-21 19:45:31,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-08-21 19:45:31,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-08-21 19:45:31,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 45 transitions. [2020-08-21 19:45:31,427 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 45 transitions. Word has length 48 [2020-08-21 19:45:31,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:45:31,427 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 45 transitions. [2020-08-21 19:45:31,427 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 19:45:31,428 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 45 transitions. [2020-08-21 19:45:31,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-08-21 19:45:31,429 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:45:31,429 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 19:45:31,429 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 19:45:31,429 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:45:31,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:45:31,430 INFO L82 PathProgramCache]: Analyzing trace with hash -2146885706, now seen corresponding path program 1 times [2020-08-21 19:45:31,430 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:45:31,430 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [837983043] [2020-08-21 19:45:31,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:45:31,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:45:31,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:45:31,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:45:31,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 19:45:31,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:45:31,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 19:45:31,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:45:31,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 19:45:31,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:45:31,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-21 19:45:31,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:45:31,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-08-21 19:45:31,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:45:31,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 19:45:31,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:45:31,586 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-08-21 19:45:31,587 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [837983043] [2020-08-21 19:45:31,587 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 19:45:31,587 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-21 19:45:31,588 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617854641] [2020-08-21 19:45:31,588 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 19:45:31,588 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:45:31,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 19:45:31,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2020-08-21 19:45:31,589 INFO L87 Difference]: Start difference. First operand 42 states and 45 transitions. Second operand 12 states. [2020-08-21 19:45:32,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:45:32,039 INFO L93 Difference]: Finished difference Result 44 states and 47 transitions. [2020-08-21 19:45:32,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-21 19:45:32,039 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 48 [2020-08-21 19:45:32,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:45:32,040 INFO L225 Difference]: With dead ends: 44 [2020-08-21 19:45:32,040 INFO L226 Difference]: Without dead ends: 0 [2020-08-21 19:45:32,041 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2020-08-21 19:45:32,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-21 19:45:32,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-21 19:45:32,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-21 19:45:32,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-21 19:45:32,042 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 48 [2020-08-21 19:45:32,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:45:32,043 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-21 19:45:32,043 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 19:45:32,043 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-21 19:45:32,043 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-21 19:45:32,043 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 19:45:32,046 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-21 19:45:32,537 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-08-21 19:45:32,537 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |old(#NULL.base)| |#NULL.base|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2020-08-21 19:45:32,537 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-08-21 19:45:32,537 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-08-21 19:45:32,538 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-08-21 19:45:32,538 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-08-21 19:45:32,538 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-08-21 19:45:32,538 INFO L271 CegarLoopResult]: At program point assume_abort_if_notENTRY(lines 5 7) the Hoare annotation is: true [2020-08-21 19:45:32,538 INFO L268 CegarLoopResult]: For program point L6(line 6) no Hoare annotation was computed. [2020-08-21 19:45:32,539 INFO L268 CegarLoopResult]: For program point L6-2(lines 5 7) no Hoare annotation was computed. [2020-08-21 19:45:32,539 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 5 7) no Hoare annotation was computed. [2020-08-21 19:45:32,539 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 38 52) the Hoare annotation is: (and (= |#memory_int| |old(#memory_int)|) (= |old(#valid)| |#valid|)) [2020-08-21 19:45:32,539 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 38 52) no Hoare annotation was computed. [2020-08-21 19:45:32,539 INFO L264 CegarLoopResult]: At program point L48(line 48) the Hoare annotation is: (let ((.cse0 ((as const (Array Int Int)) 0))) (and (= (select |#memory_int| main_~a~0.base) .cse0) (= main_~ax~1 0) (= main_~ai~1 0) (= (select |#memory_int| |main_#t~malloc10.base|) .cse0))) [2020-08-21 19:45:32,540 INFO L268 CegarLoopResult]: For program point L48-1(line 48) no Hoare annotation was computed. [2020-08-21 19:45:32,541 INFO L264 CegarLoopResult]: At program point L45(line 45) the Hoare annotation is: (let ((.cse0 ((as const (Array Int Int)) 0))) (and (= (select |#memory_int| main_~a~0.base) .cse0) (= (select |#memory_int| |main_#t~malloc10.base|) .cse0))) [2020-08-21 19:45:32,541 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 38 52) no Hoare annotation was computed. [2020-08-21 19:45:32,541 INFO L264 CegarLoopResult]: At program point L44(line 44) the Hoare annotation is: (= |#memory_int| |old(#memory_int)|) [2020-08-21 19:45:32,541 INFO L268 CegarLoopResult]: For program point L45-1(line 45) no Hoare annotation was computed. [2020-08-21 19:45:32,541 INFO L264 CegarLoopResult]: At program point L43(line 43) the Hoare annotation is: (and (= |#memory_int| |old(#memory_int)|) (= |old(#valid)| |#valid|)) [2020-08-21 19:45:32,541 INFO L268 CegarLoopResult]: For program point L44-1(line 44) no Hoare annotation was computed. [2020-08-21 19:45:32,542 INFO L268 CegarLoopResult]: For program point L43-1(line 43) no Hoare annotation was computed. [2020-08-21 19:45:32,542 INFO L264 CegarLoopResult]: At program point L40(line 40) the Hoare annotation is: (and (= |#memory_int| |old(#memory_int)|) (= |old(#valid)| |#valid|)) [2020-08-21 19:45:32,542 INFO L268 CegarLoopResult]: For program point L40-1(line 40) no Hoare annotation was computed. [2020-08-21 19:45:32,542 INFO L264 CegarLoopResult]: At program point L33(line 33) the Hoare annotation is: (let ((.cse1 (= |check_#in~x| 0)) (.cse2 ((as const (Array Int Int)) 0))) (or (let ((.cse0 (not (<= (+ |check_#in~y| 1) |check_#in~n|)))) (and (or .cse0 (not .cse1)) (or .cse0 (not (<= 1 |check_#in~x|))))) (and (= check_~ax~0 0) (= check_~ai~0 0) (= (select |#memory_int| check_~a.base) .cse2) (let ((.cse3 (<= (+ check_~y 1) check_~n))) (or (and .cse3 (<= 1 check_~x)) (and .cse1 .cse3 (= check_~x 0))))) (not (= (select |#memory_int| |check_#in~a.base|) .cse2)))) [2020-08-21 19:45:32,542 INFO L268 CegarLoopResult]: For program point L33-1(line 33) no Hoare annotation was computed. [2020-08-21 19:45:32,543 INFO L271 CegarLoopResult]: At program point checkENTRY(lines 14 36) the Hoare annotation is: true [2020-08-21 19:45:32,543 INFO L268 CegarLoopResult]: For program point L27(line 27) no Hoare annotation was computed. [2020-08-21 19:45:32,543 INFO L268 CegarLoopResult]: For program point L24(lines 24 25) no Hoare annotation was computed. [2020-08-21 19:45:32,544 INFO L264 CegarLoopResult]: At program point L24-2(lines 24 25) the Hoare annotation is: (let ((.cse2 ((as const (Array Int Int)) 0)) (.cse1 (= |check_#in~x| 0))) (or (let ((.cse0 (not (<= (+ |check_#in~y| 1) |check_#in~n|)))) (and (or .cse0 (not .cse1)) (or .cse0 (not (<= 1 |check_#in~x|))))) (not (= (select |#memory_int| |check_#in~a.base|) .cse2)) (and (= (select |#memory_int| check_~a.base) .cse2) (let ((.cse3 (<= (+ check_~y 1) check_~n))) (or (and .cse3 (<= 1 check_~x)) (and .cse1 .cse3 (= check_~x 0))))))) [2020-08-21 19:45:32,544 INFO L268 CegarLoopResult]: For program point L19(line 19) no Hoare annotation was computed. [2020-08-21 19:45:32,544 INFO L268 CegarLoopResult]: For program point checkEXIT(lines 14 36) no Hoare annotation was computed. [2020-08-21 19:45:32,544 INFO L264 CegarLoopResult]: At program point L18(line 18) the Hoare annotation is: (let ((.cse3 ((as const (Array Int Int)) 0)) (.cse1 (= |check_#in~x| 0)) (.cse2 (<= 1 |check_#in~x|))) (or (let ((.cse0 (not (<= (+ |check_#in~y| 1) |check_#in~n|)))) (and (or .cse0 (not .cse1)) (or .cse0 (not .cse2)))) (not (= (select |#memory_int| |check_#in~a.base|) .cse3)) (and (= (select |#memory_int| check_~a.base) .cse3) (let ((.cse4 (<= (+ check_~y 1) check_~n))) (or (and .cse1 .cse4 (= check_~x 0)) (and .cse4 .cse2 (<= 1 check_~x))))))) [2020-08-21 19:45:32,545 INFO L264 CegarLoopResult]: At program point L18-1(line 18) the Hoare annotation is: (let ((.cse3 ((as const (Array Int Int)) 0)) (.cse1 (= |check_#in~x| 0)) (.cse2 (<= 1 |check_#in~x|))) (or (let ((.cse0 (not (<= (+ |check_#in~y| 1) |check_#in~n|)))) (and (or .cse0 (not .cse1)) (or .cse0 (not .cse2)))) (not (= (select |#memory_int| |check_#in~a.base|) .cse3)) (and (= (select |#memory_int| check_~a.base) .cse3) (let ((.cse4 (<= (+ check_~y 1) check_~n))) (or (and .cse1 .cse4 (= check_~x 0)) (and .cse4 .cse2 (<= 1 check_~x))))))) [2020-08-21 19:45:32,545 INFO L268 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-08-21 19:45:32,545 INFO L268 CegarLoopResult]: For program point checkFINAL(lines 14 36) no Hoare annotation was computed. [2020-08-21 19:45:32,545 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 8 10) the Hoare annotation is: true [2020-08-21 19:45:32,545 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 8 10) no Hoare annotation was computed. [2020-08-21 19:45:32,545 INFO L268 CegarLoopResult]: For program point L9(line 9) no Hoare annotation was computed. [2020-08-21 19:45:32,546 INFO L268 CegarLoopResult]: For program point L9-1(line 9) no Hoare annotation was computed. [2020-08-21 19:45:32,546 INFO L268 CegarLoopResult]: For program point L9-3(lines 8 10) no Hoare annotation was computed. [2020-08-21 19:45:32,546 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 9) no Hoare annotation was computed. [2020-08-21 19:45:32,546 INFO L264 CegarLoopResult]: At program point #Ultimate.meminitENTRY(line -1) the Hoare annotation is: (= |#memory_int| |old(#memory_int)|) [2020-08-21 19:45:32,550 INFO L268 CegarLoopResult]: For program point #Ultimate.meminitEXIT(line -1) no Hoare annotation was computed. [2020-08-21 19:45:32,550 INFO L268 CegarLoopResult]: For program point #Ultimate.meminitFINAL(line -1) no Hoare annotation was computed. [2020-08-21 19:45:32,558 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 07:45:32 BoogieIcfgContainer [2020-08-21 19:45:32,558 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 19:45:32,562 INFO L168 Benchmark]: Toolchain (without parser) took 5161.22 ms. Allocated memory was 140.0 MB in the beginning and 281.5 MB in the end (delta: 141.6 MB). Free memory was 101.5 MB in the beginning and 171.2 MB in the end (delta: -69.7 MB). Peak memory consumption was 71.8 MB. Max. memory is 7.1 GB. [2020-08-21 19:45:32,563 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 140.0 MB. Free memory was 120.3 MB in the beginning and 120.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-21 19:45:32,570 INFO L168 Benchmark]: CACSL2BoogieTranslator took 287.46 ms. Allocated memory is still 140.0 MB. Free memory was 101.1 MB in the beginning and 90.6 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. [2020-08-21 19:45:32,572 INFO L168 Benchmark]: Boogie Preprocessor took 140.04 ms. Allocated memory was 140.0 MB in the beginning and 201.3 MB in the end (delta: 61.3 MB). Free memory was 90.6 MB in the beginning and 178.5 MB in the end (delta: -87.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. [2020-08-21 19:45:32,573 INFO L168 Benchmark]: RCFGBuilder took 377.18 ms. Allocated memory is still 201.3 MB. Free memory was 178.5 MB in the beginning and 159.9 MB in the end (delta: 18.6 MB). Peak memory consumption was 18.6 MB. Max. memory is 7.1 GB. [2020-08-21 19:45:32,574 INFO L168 Benchmark]: TraceAbstraction took 4350.98 ms. Allocated memory was 201.3 MB in the beginning and 281.5 MB in the end (delta: 80.2 MB). Free memory was 159.2 MB in the beginning and 171.2 MB in the end (delta: -12.0 MB). Peak memory consumption was 68.2 MB. Max. memory is 7.1 GB. [2020-08-21 19:45:32,585 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 140.0 MB. Free memory was 120.3 MB in the beginning and 120.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 287.46 ms. Allocated memory is still 140.0 MB. Free memory was 101.1 MB in the beginning and 90.6 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 140.04 ms. Allocated memory was 140.0 MB in the beginning and 201.3 MB in the end (delta: 61.3 MB). Free memory was 90.6 MB in the beginning and 178.5 MB in the end (delta: -87.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 377.18 ms. Allocated memory is still 201.3 MB. Free memory was 178.5 MB in the beginning and 159.9 MB in the end (delta: 18.6 MB). Peak memory consumption was 18.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4350.98 ms. Allocated memory was 201.3 MB in the beginning and 281.5 MB in the end (delta: 80.2 MB). Free memory was 159.2 MB in the beginning and 171.2 MB in the end (delta: -12.0 MB). Peak memory consumption was 68.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 9]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 45 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.7s, OverallIterations: 6, TraceHistogramMax: 3, AutomataDifference: 2.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 191 SDtfs, 365 SDslu, 256 SDs, 0 SdLazy, 1298 SolverSat, 335 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 157 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=57occurred in iteration=2, 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, 6 MinimizatonAttempts, 27 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 17 LocationsWithAnnotation, 50 PreInvPairs, 60 NumberOfFragments, 326 HoareAnnotationTreeSize, 50 FomulaSimplifications, 474 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 17 FomulaSimplificationsInter, 292 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 234 NumberOfCodeBlocks, 234 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 228 ConstructedInterpolants, 0 QuantifiedInterpolants, 23187 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 3 PerfectInterpolantSequences, 54/61 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...