/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 false -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 0.1.25-5644d1e-m [2020-08-18 10:32:14,269 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 10:32:14,272 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 10:32:14,313 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 10:32:14,313 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 10:32:14,321 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 10:32:14,324 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 10:32:14,328 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 10:32:14,330 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 10:32:14,333 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 10:32:14,334 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 10:32:14,335 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 10:32:14,335 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 10:32:14,338 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 10:32:14,341 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 10:32:14,342 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 10:32:14,344 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 10:32:14,345 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 10:32:14,346 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 10:32:14,356 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 10:32:14,358 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 10:32:14,359 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 10:32:14,360 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 10:32:14,361 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 10:32:14,372 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 10:32:14,373 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 10:32:14,373 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 10:32:14,379 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 10:32:14,379 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 10:32:14,380 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 10:32:14,381 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 10:32:14,381 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 10:32:14,382 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 10:32:14,383 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 10:32:14,383 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 10:32:14,384 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 10:32:14,387 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 10:32:14,388 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 10:32:14,388 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 10:32:14,391 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 10:32:14,392 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 10:32:14,393 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 [2020-08-18 10:32:14,431 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 10:32:14,432 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 10:32:14,434 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 10:32:14,434 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 10:32:14,434 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 10:32:14,435 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 10:32:14,435 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 10:32:14,435 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 10:32:14,435 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 10:32:14,435 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 10:32:14,436 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 10:32:14,437 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 10:32:14,437 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 10:32:14,437 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 10:32:14,437 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 10:32:14,438 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 10:32:14,438 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 10:32:14,438 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 10:32:14,438 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 10:32:14,438 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 10:32:14,439 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 10:32:14,439 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 10:32:14,439 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 10:32:14,439 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 10:32:14,440 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 10:32:14,440 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 10:32:14,440 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 10:32:14,440 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 10:32:14,440 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 10:32:14,440 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 -> false [2020-08-18 10:32:14,713 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 10:32:14,726 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 10:32:14,730 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 10:32:14,732 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 10:32:14,732 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 10:32:14,733 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/verifythis/elimination_max_rec_onepoint.c [2020-08-18 10:32:14,814 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7282e8626/18846b0d7dfd467eac866f7e329464b6/FLAG7f592c451 [2020-08-18 10:32:15,317 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 10:32:15,318 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/verifythis/elimination_max_rec_onepoint.c [2020-08-18 10:32:15,325 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7282e8626/18846b0d7dfd467eac866f7e329464b6/FLAG7f592c451 [2020-08-18 10:32:15,691 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7282e8626/18846b0d7dfd467eac866f7e329464b6 [2020-08-18 10:32:15,700 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 10:32:15,702 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 10:32:15,703 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 10:32:15,703 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 10:32:15,706 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 10:32:15,707 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 10:32:15" (1/1) ... [2020-08-18 10:32:15,710 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5dffdbfa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:32:15, skipping insertion in model container [2020-08-18 10:32:15,710 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 10:32:15" (1/1) ... [2020-08-18 10:32:15,718 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 10:32:15,734 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 10:32:15,899 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 10:32:15,918 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 10:32:15,942 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 10:32:16,049 INFO L208 MainTranslator]: Completed translation [2020-08-18 10:32:16,051 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:32:16 WrapperNode [2020-08-18 10:32:16,051 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 10:32:16,052 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 10:32:16,052 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 10:32:16,052 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 10:32:16,065 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:32:16" (1/1) ... [2020-08-18 10:32:16,065 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:32:16" (1/1) ... [2020-08-18 10:32:16,074 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:32:16" (1/1) ... [2020-08-18 10:32:16,075 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:32:16" (1/1) ... [2020-08-18 10:32:16,085 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:32:16" (1/1) ... [2020-08-18 10:32:16,087 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:32:16" (1/1) ... [2020-08-18 10:32:16,089 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:32:16" (1/1) ... [2020-08-18 10:32:16,091 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 10:32:16,092 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 10:32:16,092 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 10:32:16,092 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 10:32:16,093 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:32:16" (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 [2020-08-18 10:32:16,149 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 10:32:16,150 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 10:32:16,150 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-18 10:32:16,150 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-18 10:32:16,151 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-08-18 10:32:16,152 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 10:32:16,153 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-08-18 10:32:16,153 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-08-18 10:32:16,153 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 10:32:16,154 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 10:32:16,154 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-18 10:32:16,155 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-18 10:32:16,155 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-18 10:32:16,155 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 10:32:16,155 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-08-18 10:32:16,155 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 10:32:16,156 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 10:32:16,156 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 10:32:16,156 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-08-18 10:32:16,156 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 10:32:16,156 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 10:32:16,157 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 10:32:16,157 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 10:32:16,466 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 10:32:16,466 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-18 10:32:16,472 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 10:32:16 BoogieIcfgContainer [2020-08-18 10:32:16,472 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 10:32:16,474 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 10:32:16,474 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 10:32:16,477 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 10:32:16,478 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 10:32:15" (1/3) ... [2020-08-18 10:32:16,479 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1795bd93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 10:32:16, skipping insertion in model container [2020-08-18 10:32:16,479 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:32:16" (2/3) ... [2020-08-18 10:32:16,479 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1795bd93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 10:32:16, skipping insertion in model container [2020-08-18 10:32:16,479 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 10:32:16" (3/3) ... [2020-08-18 10:32:16,481 INFO L109 eAbstractionObserver]: Analyzing ICFG elimination_max_rec_onepoint.c [2020-08-18 10:32:16,496 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 10:32:16,504 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 10:32:16,519 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 10:32:16,546 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 10:32:16,546 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 10:32:16,547 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 10:32:16,547 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 10:32:16,547 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 10:32:16,547 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 10:32:16,548 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 10:32:16,548 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 10:32:16,574 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2020-08-18 10:32:16,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-08-18 10:32:16,581 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:32:16,583 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] [2020-08-18 10:32:16,583 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:32:16,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:32:16,590 INFO L82 PathProgramCache]: Analyzing trace with hash -640327596, now seen corresponding path program 1 times [2020-08-18 10:32:16,602 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:32:16,602 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [23959847] [2020-08-18 10:32:16,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:32:16,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:32:16,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:32:16,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:32:16,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:32:16,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:32:16,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:32:16,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:32:16,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:32:16,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:32:16,877 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-18 10:32:16,883 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [23959847] [2020-08-18 10:32:16,888 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:32:16,888 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 10:32:16,889 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552789154] [2020-08-18 10:32:16,895 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 10:32:16,896 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:32:16,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 10:32:16,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 10:32:16,916 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 4 states. [2020-08-18 10:32:17,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:32:17,105 INFO L93 Difference]: Finished difference Result 83 states and 106 transitions. [2020-08-18 10:32:17,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 10:32:17,107 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2020-08-18 10:32:17,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:32:17,118 INFO L225 Difference]: With dead ends: 83 [2020-08-18 10:32:17,118 INFO L226 Difference]: Without dead ends: 40 [2020-08-18 10:32:17,123 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 [2020-08-18 10:32:17,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-08-18 10:32:17,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2020-08-18 10:32:17,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-08-18 10:32:17,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 46 transitions. [2020-08-18 10:32:17,174 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 46 transitions. Word has length 30 [2020-08-18 10:32:17,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:32:17,174 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 46 transitions. [2020-08-18 10:32:17,175 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 10:32:17,175 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 46 transitions. [2020-08-18 10:32:17,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-08-18 10:32:17,177 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:32:17,178 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] [2020-08-18 10:32:17,178 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 10:32:17,178 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:32:17,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:32:17,180 INFO L82 PathProgramCache]: Analyzing trace with hash -1442541232, now seen corresponding path program 1 times [2020-08-18 10:32:17,181 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:32:17,181 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [623303723] [2020-08-18 10:32:17,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:32:17,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:32:17,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:32:17,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:32:17,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:32:17,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:32:17,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:32:17,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:32:17,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:32:17,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:32:17,418 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-18 10:32:17,418 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [623303723] [2020-08-18 10:32:17,419 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:32:17,419 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 10:32:17,419 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912758342] [2020-08-18 10:32:17,421 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 10:32:17,422 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:32:17,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 10:32:17,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-08-18 10:32:17,423 INFO L87 Difference]: Start difference. First operand 40 states and 46 transitions. Second operand 8 states. [2020-08-18 10:32:17,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:32:17,901 INFO L93 Difference]: Finished difference Result 64 states and 77 transitions. [2020-08-18 10:32:17,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 10:32:17,904 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 30 [2020-08-18 10:32:17,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:32:17,910 INFO L225 Difference]: With dead ends: 64 [2020-08-18 10:32:17,910 INFO L226 Difference]: Without dead ends: 62 [2020-08-18 10:32:17,915 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 [2020-08-18 10:32:17,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-08-18 10:32:17,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 57. [2020-08-18 10:32:17,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-08-18 10:32:17,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 68 transitions. [2020-08-18 10:32:17,954 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 68 transitions. Word has length 30 [2020-08-18 10:32:17,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:32:17,954 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 68 transitions. [2020-08-18 10:32:17,954 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 10:32:17,955 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 68 transitions. [2020-08-18 10:32:17,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-08-18 10:32:17,956 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:32:17,956 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] [2020-08-18 10:32:17,957 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 10:32:17,957 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:32:17,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:32:17,957 INFO L82 PathProgramCache]: Analyzing trace with hash 389656800, now seen corresponding path program 1 times [2020-08-18 10:32:17,957 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:32:17,958 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [98299483] [2020-08-18 10:32:17,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:32:17,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:32:18,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:32:18,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:32:18,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:32:18,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:32:18,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:32:18,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:32:18,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:32:18,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:32:18,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-18 10:32:18,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:32:18,123 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-18 10:32:18,124 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [98299483] [2020-08-18 10:32:18,124 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:32:18,124 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-18 10:32:18,125 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635340045] [2020-08-18 10:32:18,125 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 10:32:18,125 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:32:18,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 10:32:18,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-08-18 10:32:18,126 INFO L87 Difference]: Start difference. First operand 57 states and 68 transitions. Second operand 10 states. [2020-08-18 10:32:18,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:32:18,576 INFO L93 Difference]: Finished difference Result 63 states and 73 transitions. [2020-08-18 10:32:18,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-18 10:32:18,579 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 33 [2020-08-18 10:32:18,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:32:18,581 INFO L225 Difference]: With dead ends: 63 [2020-08-18 10:32:18,581 INFO L226 Difference]: Without dead ends: 55 [2020-08-18 10:32:18,584 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 [2020-08-18 10:32:18,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-08-18 10:32:18,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-08-18 10:32:18,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-08-18 10:32:18,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 65 transitions. [2020-08-18 10:32:18,604 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 65 transitions. Word has length 33 [2020-08-18 10:32:18,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:32:18,608 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 65 transitions. [2020-08-18 10:32:18,609 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 10:32:18,609 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 65 transitions. [2020-08-18 10:32:18,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-08-18 10:32:18,614 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:32:18,614 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] [2020-08-18 10:32:18,615 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 10:32:18,615 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:32:18,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:32:18,615 INFO L82 PathProgramCache]: Analyzing trace with hash 1379492317, now seen corresponding path program 1 times [2020-08-18 10:32:18,616 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:32:18,616 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [294461921] [2020-08-18 10:32:18,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:32:18,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:32:18,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:32:18,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:32:18,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:32:18,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:32:18,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:32:18,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:32:18,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:32:18,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:32:18,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-18 10:32:18,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:32:18,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-08-18 10:32:18,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:32:18,890 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-08-18 10:32:18,891 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [294461921] [2020-08-18 10:32:18,891 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 10:32:18,891 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-18 10:32:18,892 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468536727] [2020-08-18 10:32:18,892 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 10:32:18,892 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:32:18,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 10:32:18,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-08-18 10:32:18,893 INFO L87 Difference]: Start difference. First operand 55 states and 65 transitions. Second operand 10 states. [2020-08-18 10:32:19,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:32:19,453 INFO L93 Difference]: Finished difference Result 66 states and 76 transitions. [2020-08-18 10:32:19,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-18 10:32:19,454 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 45 [2020-08-18 10:32:19,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:32:19,457 INFO L225 Difference]: With dead ends: 66 [2020-08-18 10:32:19,457 INFO L226 Difference]: Without dead ends: 64 [2020-08-18 10:32:19,458 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 [2020-08-18 10:32:19,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-08-18 10:32:19,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 42. [2020-08-18 10:32:19,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-08-18 10:32:19,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 46 transitions. [2020-08-18 10:32:19,468 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 46 transitions. Word has length 45 [2020-08-18 10:32:19,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:32:19,469 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 46 transitions. [2020-08-18 10:32:19,469 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 10:32:19,469 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 46 transitions. [2020-08-18 10:32:19,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-08-18 10:32:19,470 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:32:19,471 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] [2020-08-18 10:32:19,471 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 10:32:19,471 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:32:19,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:32:19,472 INFO L82 PathProgramCache]: Analyzing trace with hash -1445821128, now seen corresponding path program 1 times [2020-08-18 10:32:19,472 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:32:19,472 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1828870296] [2020-08-18 10:32:19,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:32:19,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:32:19,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:32:19,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:32:19,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:32:19,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:32:19,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:32:19,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:32:19,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:32:19,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:32:19,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-18 10:32:19,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:32:19,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-08-18 10:32:19,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:32:19,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 10:32:19,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:32:19,624 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-08-18 10:32:19,624 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1828870296] [2020-08-18 10:32:19,625 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 10:32:19,625 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-18 10:32:19,625 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985686797] [2020-08-18 10:32:19,626 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 10:32:19,626 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:32:19,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 10:32:19,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-08-18 10:32:19,627 INFO L87 Difference]: Start difference. First operand 42 states and 46 transitions. Second operand 10 states. [2020-08-18 10:32:20,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:32:20,005 INFO L93 Difference]: Finished difference Result 68 states and 75 transitions. [2020-08-18 10:32:20,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 10:32:20,006 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 48 [2020-08-18 10:32:20,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:32:20,008 INFO L225 Difference]: With dead ends: 68 [2020-08-18 10:32:20,008 INFO L226 Difference]: Without dead ends: 42 [2020-08-18 10:32:20,009 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 [2020-08-18 10:32:20,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-08-18 10:32:20,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-08-18 10:32:20,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-08-18 10:32:20,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 45 transitions. [2020-08-18 10:32:20,017 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 45 transitions. Word has length 48 [2020-08-18 10:32:20,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:32:20,018 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 45 transitions. [2020-08-18 10:32:20,018 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 10:32:20,018 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 45 transitions. [2020-08-18 10:32:20,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-08-18 10:32:20,019 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:32:20,019 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] [2020-08-18 10:32:20,020 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 10:32:20,020 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:32:20,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:32:20,020 INFO L82 PathProgramCache]: Analyzing trace with hash -2146885706, now seen corresponding path program 1 times [2020-08-18 10:32:20,020 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:32:20,021 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1781825483] [2020-08-18 10:32:20,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:32:20,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:32:20,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:32:20,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:32:20,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:32:20,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:32:20,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:32:20,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:32:20,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:32:20,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:32:20,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-18 10:32:20,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:32:20,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-08-18 10:32:20,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:32:20,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 10:32:20,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:32:20,226 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-08-18 10:32:20,227 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1781825483] [2020-08-18 10:32:20,227 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 10:32:20,227 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-18 10:32:20,228 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67014483] [2020-08-18 10:32:20,228 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 10:32:20,228 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:32:20,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 10:32:20,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2020-08-18 10:32:20,229 INFO L87 Difference]: Start difference. First operand 42 states and 45 transitions. Second operand 12 states. [2020-08-18 10:32:20,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:32:20,747 INFO L93 Difference]: Finished difference Result 44 states and 47 transitions. [2020-08-18 10:32:20,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-18 10:32:20,748 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 48 [2020-08-18 10:32:20,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:32:20,749 INFO L225 Difference]: With dead ends: 44 [2020-08-18 10:32:20,749 INFO L226 Difference]: Without dead ends: 0 [2020-08-18 10:32:20,750 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 [2020-08-18 10:32:20,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-18 10:32:20,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-18 10:32:20,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-18 10:32:20,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-18 10:32:20,753 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 48 [2020-08-18 10:32:20,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:32:20,753 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-18 10:32:20,753 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 10:32:20,754 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-18 10:32:20,754 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-18 10:32:20,754 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 10:32:20,756 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-18 10:32:21,129 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 36 [2020-08-18 10:32:21,374 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 40 [2020-08-18 10:32:21,378 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-08-18 10:32:21,378 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|)) [2020-08-18 10:32:21,379 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-08-18 10:32:21,379 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-08-18 10:32:21,379 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-08-18 10:32:21,379 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-08-18 10:32:21,379 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-08-18 10:32:21,379 INFO L271 CegarLoopResult]: At program point assume_abort_if_notENTRY(lines 5 7) the Hoare annotation is: true [2020-08-18 10:32:21,380 INFO L268 CegarLoopResult]: For program point L6(line 6) no Hoare annotation was computed. [2020-08-18 10:32:21,380 INFO L268 CegarLoopResult]: For program point L6-2(lines 5 7) no Hoare annotation was computed. [2020-08-18 10:32:21,380 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 5 7) no Hoare annotation was computed. [2020-08-18 10:32:21,380 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 38 52) the Hoare annotation is: (and (= |#memory_int| |old(#memory_int)|) (= |old(#valid)| |#valid|)) [2020-08-18 10:32:21,380 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 38 52) no Hoare annotation was computed. [2020-08-18 10:32:21,381 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))) [2020-08-18 10:32:21,381 INFO L268 CegarLoopResult]: For program point L48-1(line 48) no Hoare annotation was computed. [2020-08-18 10:32:21,382 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))) [2020-08-18 10:32:21,382 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 38 52) no Hoare annotation was computed. [2020-08-18 10:32:21,382 INFO L264 CegarLoopResult]: At program point L44(line 44) the Hoare annotation is: (= |#memory_int| |old(#memory_int)|) [2020-08-18 10:32:21,383 INFO L268 CegarLoopResult]: For program point L45-1(line 45) no Hoare annotation was computed. [2020-08-18 10:32:21,383 INFO L264 CegarLoopResult]: At program point L43(line 43) the Hoare annotation is: (and (= |#memory_int| |old(#memory_int)|) (= |old(#valid)| |#valid|)) [2020-08-18 10:32:21,383 INFO L268 CegarLoopResult]: For program point L44-1(line 44) no Hoare annotation was computed. [2020-08-18 10:32:21,383 INFO L268 CegarLoopResult]: For program point L43-1(line 43) no Hoare annotation was computed. [2020-08-18 10:32:21,383 INFO L264 CegarLoopResult]: At program point L40(line 40) the Hoare annotation is: (and (= |#memory_int| |old(#memory_int)|) (= |old(#valid)| |#valid|)) [2020-08-18 10:32:21,383 INFO L268 CegarLoopResult]: For program point L40-1(line 40) no Hoare annotation was computed. [2020-08-18 10:32:21,384 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)))) [2020-08-18 10:32:21,384 INFO L268 CegarLoopResult]: For program point L33-1(line 33) no Hoare annotation was computed. [2020-08-18 10:32:21,384 INFO L271 CegarLoopResult]: At program point checkENTRY(lines 14 36) the Hoare annotation is: true [2020-08-18 10:32:21,385 INFO L268 CegarLoopResult]: For program point L27(line 27) no Hoare annotation was computed. [2020-08-18 10:32:21,386 INFO L268 CegarLoopResult]: For program point L24(lines 24 25) no Hoare annotation was computed. [2020-08-18 10:32:21,386 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))))))) [2020-08-18 10:32:21,386 INFO L268 CegarLoopResult]: For program point L19(line 19) no Hoare annotation was computed. [2020-08-18 10:32:21,386 INFO L268 CegarLoopResult]: For program point checkEXIT(lines 14 36) no Hoare annotation was computed. [2020-08-18 10:32:21,387 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))))))) [2020-08-18 10:32:21,387 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))))))) [2020-08-18 10:32:21,387 INFO L268 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-08-18 10:32:21,387 INFO L268 CegarLoopResult]: For program point checkFINAL(lines 14 36) no Hoare annotation was computed. [2020-08-18 10:32:21,388 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 8 10) the Hoare annotation is: true [2020-08-18 10:32:21,388 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 8 10) no Hoare annotation was computed. [2020-08-18 10:32:21,388 INFO L268 CegarLoopResult]: For program point L9(line 9) no Hoare annotation was computed. [2020-08-18 10:32:21,388 INFO L268 CegarLoopResult]: For program point L9-1(line 9) no Hoare annotation was computed. [2020-08-18 10:32:21,388 INFO L268 CegarLoopResult]: For program point L9-3(lines 8 10) no Hoare annotation was computed. [2020-08-18 10:32:21,388 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 9) no Hoare annotation was computed. [2020-08-18 10:32:21,389 INFO L264 CegarLoopResult]: At program point #Ultimate.meminitENTRY(line -1) the Hoare annotation is: (= |#memory_int| |old(#memory_int)|) [2020-08-18 10:32:21,389 INFO L268 CegarLoopResult]: For program point #Ultimate.meminitEXIT(line -1) no Hoare annotation was computed. [2020-08-18 10:32:21,392 INFO L268 CegarLoopResult]: For program point #Ultimate.meminitFINAL(line -1) no Hoare annotation was computed. [2020-08-18 10:32:21,400 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 10:32:21 BoogieIcfgContainer [2020-08-18 10:32:21,401 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 10:32:21,404 INFO L168 Benchmark]: Toolchain (without parser) took 5701.21 ms. Allocated memory was 140.5 MB in the beginning and 275.8 MB in the end (delta: 135.3 MB). Free memory was 103.0 MB in the beginning and 153.1 MB in the end (delta: -50.1 MB). Peak memory consumption was 85.2 MB. Max. memory is 7.1 GB. [2020-08-18 10:32:21,406 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-18 10:32:21,413 INFO L168 Benchmark]: CACSL2BoogieTranslator took 349.23 ms. Allocated memory was 140.5 MB in the beginning and 205.0 MB in the end (delta: 64.5 MB). Free memory was 102.8 MB in the beginning and 183.9 MB in the end (delta: -81.1 MB). Peak memory consumption was 22.8 MB. Max. memory is 7.1 GB. [2020-08-18 10:32:21,414 INFO L168 Benchmark]: Boogie Preprocessor took 39.62 ms. Allocated memory is still 205.0 MB. Free memory was 183.9 MB in the beginning and 181.6 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. [2020-08-18 10:32:21,416 INFO L168 Benchmark]: RCFGBuilder took 380.13 ms. Allocated memory is still 205.0 MB. Free memory was 181.6 MB in the beginning and 162.6 MB in the end (delta: 19.0 MB). Peak memory consumption was 19.0 MB. Max. memory is 7.1 GB. [2020-08-18 10:32:21,417 INFO L168 Benchmark]: TraceAbstraction took 4926.75 ms. Allocated memory was 205.0 MB in the beginning and 275.8 MB in the end (delta: 70.8 MB). Free memory was 161.9 MB in the beginning and 153.1 MB in the end (delta: 8.8 MB). Peak memory consumption was 79.6 MB. Max. memory is 7.1 GB. [2020-08-18 10:32:21,430 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 349.23 ms. Allocated memory was 140.5 MB in the beginning and 205.0 MB in the end (delta: 64.5 MB). Free memory was 102.8 MB in the beginning and 183.9 MB in the end (delta: -81.1 MB). Peak memory consumption was 22.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 39.62 ms. Allocated memory is still 205.0 MB. Free memory was 183.9 MB in the beginning and 181.6 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 380.13 ms. Allocated memory is still 205.0 MB. Free memory was 181.6 MB in the beginning and 162.6 MB in the end (delta: 19.0 MB). Peak memory consumption was 19.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4926.75 ms. Allocated memory was 205.0 MB in the beginning and 275.8 MB in the end (delta: 70.8 MB). Free memory was 161.9 MB in the beginning and 153.1 MB in the end (delta: 8.8 MB). Peak memory consumption was 79.6 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: 4.2s, OverallIterations: 6, TraceHistogramMax: 3, AutomataDifference: 2.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.6s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 191 SDtfs, 365 SDslu, 256 SDs, 0 SdLazy, 1298 SolverSat, 335 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 157 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 1.2s 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: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 27 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 17 LocationsWithAnnotation, 50 PreInvPairs, 60 NumberOfFragments, 326 HoareAnnotationTreeSize, 50 FomulaSimplifications, 474 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 17 FomulaSimplificationsInter, 292 FormulaSimplificationTreeSizeReductionInter, 0.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.9s 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...