/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-invgen/nested9.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 02:20:14,898 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 02:20:14,902 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 02:20:14,928 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 02:20:14,929 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 02:20:14,930 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 02:20:14,931 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 02:20:14,933 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 02:20:14,935 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 02:20:14,936 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 02:20:14,937 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 02:20:14,939 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 02:20:14,939 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 02:20:14,940 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 02:20:14,941 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 02:20:14,943 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 02:20:14,944 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 02:20:14,945 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 02:20:14,947 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 02:20:14,949 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 02:20:14,951 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 02:20:14,952 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 02:20:14,954 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 02:20:14,955 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 02:20:14,958 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 02:20:14,958 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 02:20:14,958 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 02:20:14,960 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 02:20:14,960 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 02:20:14,961 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 02:20:14,961 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 02:20:14,962 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 02:20:14,963 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 02:20:14,964 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 02:20:14,966 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 02:20:14,966 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 02:20:14,967 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 02:20:14,967 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 02:20:14,967 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 02:20:14,968 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 02:20:14,969 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 02:20:14,970 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 02:20:15,002 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 02:20:15,004 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 02:20:15,006 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 02:20:15,006 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 02:20:15,006 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 02:20:15,007 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 02:20:15,007 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 02:20:15,008 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 02:20:15,008 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 02:20:15,008 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 02:20:15,008 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 02:20:15,008 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 02:20:15,009 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 02:20:15,009 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 02:20:15,009 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 02:20:15,009 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 02:20:15,009 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 02:20:15,010 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 02:20:15,011 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 02:20:15,011 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 02:20:15,011 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 02:20:15,012 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 02:20:15,012 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 02:20:15,012 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 02:20:15,013 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 02:20:15,013 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 02:20:15,013 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 02:20:15,013 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 02:20:15,013 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 02:20:15,014 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true; [2020-09-25 02:20:15,517 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 02:20:15,534 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 02:20:15,538 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 02:20:15,540 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 02:20:15,541 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 02:20:15,542 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/nested9.i [2020-09-25 02:20:15,615 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7abee8a40/5e65b604b7224f5f82f6b3da97d11368/FLAGcbdabd19a [2020-09-25 02:20:16,176 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 02:20:16,177 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-invgen/nested9.i [2020-09-25 02:20:16,184 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7abee8a40/5e65b604b7224f5f82f6b3da97d11368/FLAGcbdabd19a [2020-09-25 02:20:16,528 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7abee8a40/5e65b604b7224f5f82f6b3da97d11368 [2020-09-25 02:20:16,541 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 02:20:16,547 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 02:20:16,549 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 02:20:16,549 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 02:20:16,555 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 02:20:16,556 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:20:16" (1/1) ... [2020-09-25 02:20:16,561 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@cc82329 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:20:16, skipping insertion in model container [2020-09-25 02:20:16,562 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:20:16" (1/1) ... [2020-09-25 02:20:16,572 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 02:20:16,598 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 02:20:16,816 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 02:20:16,822 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 02:20:16,845 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 02:20:16,863 INFO L208 MainTranslator]: Completed translation [2020-09-25 02:20:16,864 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:20:16 WrapperNode [2020-09-25 02:20:16,864 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 02:20:16,865 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 02:20:16,865 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 02:20:16,865 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 02:20:16,878 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:20:16" (1/1) ... [2020-09-25 02:20:16,879 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:20:16" (1/1) ... [2020-09-25 02:20:16,885 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:20:16" (1/1) ... [2020-09-25 02:20:16,885 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:20:16" (1/1) ... [2020-09-25 02:20:16,889 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:20:16" (1/1) ... [2020-09-25 02:20:16,976 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:20:16" (1/1) ... [2020-09-25 02:20:16,978 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:20:16" (1/1) ... [2020-09-25 02:20:16,984 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 02:20:16,984 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 02:20:16,984 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 02:20:16,984 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 02:20:16,989 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:20:16" (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 [2020-09-25 02:20:17,069 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 02:20:17,069 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 02:20:17,070 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-25 02:20:17,070 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 02:20:17,070 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 02:20:17,070 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 02:20:17,070 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 02:20:17,070 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-25 02:20:17,071 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 02:20:17,071 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 02:20:17,071 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 02:20:17,071 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 02:20:17,071 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 02:20:17,427 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 02:20:17,428 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-09-25 02:20:17,434 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:20:17 BoogieIcfgContainer [2020-09-25 02:20:17,434 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 02:20:17,435 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 02:20:17,436 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 02:20:17,439 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 02:20:17,440 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:20:16" (1/3) ... [2020-09-25 02:20:17,441 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fe47d2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:20:17, skipping insertion in model container [2020-09-25 02:20:17,441 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:20:16" (2/3) ... [2020-09-25 02:20:17,441 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fe47d2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:20:17, skipping insertion in model container [2020-09-25 02:20:17,442 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:20:17" (3/3) ... [2020-09-25 02:20:17,444 INFO L109 eAbstractionObserver]: Analyzing ICFG nested9.i [2020-09-25 02:20:17,456 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 02:20:17,466 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 02:20:17,489 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 02:20:17,522 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 02:20:17,523 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 02:20:17,523 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 02:20:17,523 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 02:20:17,524 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 02:20:17,524 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 02:20:17,524 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 02:20:17,524 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 02:20:17,550 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states. [2020-09-25 02:20:17,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-25 02:20:17,559 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:20:17,560 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 02:20:17,561 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:20:17,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:20:17,568 INFO L82 PathProgramCache]: Analyzing trace with hash -980226087, now seen corresponding path program 1 times [2020-09-25 02:20:17,577 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:20:17,578 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [495486595] [2020-09-25 02:20:17,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:20:17,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:20:17,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:20:17,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:20:18,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:20:18,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:20:18,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:20:18,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:20:18,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:20:18,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:20:18,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:20:18,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-25 02:20:18,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 02:20:18,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1087 [2020-09-25 02:20:18,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:20:18,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 02:20:18,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-09-25 02:20:18,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 02:20:18,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 02:20:18,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:20:18,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:20:18,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:20:18,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:20:18,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 02:20:18,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:20:18,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 02:20:18,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:20:18,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:20:18,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:20:18,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:20:18,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:20:18,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 02:20:18,909 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [495486595] [2020-09-25 02:20:18,912 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:20:18,912 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 02:20:18,913 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171586252] [2020-09-25 02:20:18,919 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 02:20:18,920 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:20:18,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 02:20:18,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 02:20:18,942 INFO L87 Difference]: Start difference. First operand 54 states. Second operand 5 states. [2020-09-25 02:20:19,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:20:19,210 INFO L93 Difference]: Finished difference Result 88 states and 109 transitions. [2020-09-25 02:20:19,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 02:20:19,212 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 34 [2020-09-25 02:20:19,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:20:19,224 INFO L225 Difference]: With dead ends: 88 [2020-09-25 02:20:19,224 INFO L226 Difference]: Without dead ends: 51 [2020-09-25 02:20:19,229 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-09-25 02:20:19,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-09-25 02:20:19,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 49. [2020-09-25 02:20:19,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-09-25 02:20:19,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 51 transitions. [2020-09-25 02:20:19,286 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 51 transitions. Word has length 34 [2020-09-25 02:20:19,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:20:19,287 INFO L479 AbstractCegarLoop]: Abstraction has 49 states and 51 transitions. [2020-09-25 02:20:19,287 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 02:20:19,287 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 51 transitions. [2020-09-25 02:20:19,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-09-25 02:20:19,289 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:20:19,289 INFO L422 BasicCegarLoop]: trace histogram [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, 1] [2020-09-25 02:20:19,289 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 02:20:19,290 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:20:19,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:20:19,290 INFO L82 PathProgramCache]: Analyzing trace with hash 1377800797, now seen corresponding path program 1 times [2020-09-25 02:20:19,291 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:20:19,291 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [126785929] [2020-09-25 02:20:19,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:20:19,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:20:19,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:20:19,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:20:19,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:20:19,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:20:19,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:20:20,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:20:20,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:20:20,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:20:20,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:20:20,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:20:21,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:20:21,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:20:21,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-25 02:20:21,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 02:20:21,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2003 [2020-09-25 02:20:21,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:20:21,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 02:20:21,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-09-25 02:20:21,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 02:20:21,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:20:21,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:20:21,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:20:21,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:20:21,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:20:21,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 02:20:21,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:20:21,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 02:20:21,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:20:21,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:20:21,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:20:21,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:20:21,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:20:21,414 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 02:20:21,414 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [126785929] [2020-09-25 02:20:21,415 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:20:21,415 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-25 02:20:21,415 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9951903] [2020-09-25 02:20:21,417 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 02:20:21,418 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:20:21,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 02:20:21,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-09-25 02:20:21,419 INFO L87 Difference]: Start difference. First operand 49 states and 51 transitions. Second operand 9 states. [2020-09-25 02:20:21,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:20:21,802 INFO L93 Difference]: Finished difference Result 72 states and 78 transitions. [2020-09-25 02:20:21,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 02:20:21,803 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 40 [2020-09-25 02:20:21,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:20:21,807 INFO L225 Difference]: With dead ends: 72 [2020-09-25 02:20:21,808 INFO L226 Difference]: Without dead ends: 70 [2020-09-25 02:20:21,809 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2020-09-25 02:20:21,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-09-25 02:20:21,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 57. [2020-09-25 02:20:21,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-09-25 02:20:21,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 61 transitions. [2020-09-25 02:20:21,827 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 61 transitions. Word has length 40 [2020-09-25 02:20:21,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:20:21,828 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 61 transitions. [2020-09-25 02:20:21,828 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 02:20:21,828 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 61 transitions. [2020-09-25 02:20:21,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-09-25 02:20:21,829 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:20:21,830 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:20:21,830 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 02:20:21,830 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:20:21,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:20:21,831 INFO L82 PathProgramCache]: Analyzing trace with hash -475110064, now seen corresponding path program 1 times [2020-09-25 02:20:21,831 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:20:21,831 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1699166557] [2020-09-25 02:20:21,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:20:21,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:20:21,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:20:21,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:20:21,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:20:22,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:20:22,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:20:22,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:20:22,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:20:22,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:20:23,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:20:23,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:20:23,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:20:23,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:20:23,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:20:23,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:20:23,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:20:24,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:20:24,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:20:25,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:20:25,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:20:25,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:20:26,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:20:26,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:20:26,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 02:20:26,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 21 [2020-09-25 02:20:26,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 02:20:26,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:20:26,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:20:26,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-09-25 02:20:26,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 02:20:26,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:20:26,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:20:26,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:20:26,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:20:26,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:20:26,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 02:20:26,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:20:26,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 02:20:26,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:20:26,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:20:26,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:20:26,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:20:26,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:20:26,911 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 02:20:26,911 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1699166557] [2020-09-25 02:20:26,911 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:20:26,912 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 02:20:26,912 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557038156] [2020-09-25 02:20:26,913 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 02:20:26,913 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:20:26,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 02:20:26,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 02:20:26,914 INFO L87 Difference]: Start difference. First operand 57 states and 61 transitions. Second operand 6 states. [2020-09-25 02:20:27,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:20:27,136 INFO L93 Difference]: Finished difference Result 95 states and 105 transitions. [2020-09-25 02:20:27,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 02:20:27,136 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 46 [2020-09-25 02:20:27,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:20:27,140 INFO L225 Difference]: With dead ends: 95 [2020-09-25 02:20:27,140 INFO L226 Difference]: Without dead ends: 66 [2020-09-25 02:20:27,141 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-09-25 02:20:27,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-09-25 02:20:27,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 57. [2020-09-25 02:20:27,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-09-25 02:20:27,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 60 transitions. [2020-09-25 02:20:27,152 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 60 transitions. Word has length 46 [2020-09-25 02:20:27,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:20:27,153 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 60 transitions. [2020-09-25 02:20:27,153 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 02:20:27,153 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 60 transitions. [2020-09-25 02:20:27,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-09-25 02:20:27,154 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:20:27,155 INFO L422 BasicCegarLoop]: trace histogram [2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:20:27,155 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 02:20:27,155 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:20:27,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:20:27,156 INFO L82 PathProgramCache]: Analyzing trace with hash -1348236411, now seen corresponding path program 1 times [2020-09-25 02:20:27,156 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:20:27,156 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [732159989] [2020-09-25 02:20:27,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:20:27,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:20:27,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:20:27,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:20:27,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:20:27,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:20:27,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:20:27,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:20:27,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:20:27,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:20:27,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:20:28,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:20:28,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:20:28,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:20:28,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:20:28,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:20:28,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:20:28,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:20:28,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:20:29,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:20:30,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:20:30,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:20:30,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:20:32,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:20:32,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:20:32,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:20:32,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-25 02:20:32,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 23 [2020-09-25 02:20:32,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-09-25 02:20:32,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:20:32,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 02:20:32,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-09-25 02:20:32,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 02:20:32,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:20:32,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:20:32,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:20:32,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:20:32,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:20:32,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 02:20:32,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:20:32,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 02:20:32,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:20:32,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:20:32,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:20:32,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:20:32,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:20:32,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 02:20:32,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:20:32,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:20:32,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:20:32,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 02:20:32,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:20:32,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 02:20:32,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:20:32,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:20:32,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:20:32,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 02:20:32,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:20:32,330 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 02:20:32,331 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [732159989] [2020-09-25 02:20:32,332 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:20:32,332 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 02:20:32,332 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016848674] [2020-09-25 02:20:32,333 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 02:20:32,333 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:20:32,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 02:20:32,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-09-25 02:20:32,335 INFO L87 Difference]: Start difference. First operand 57 states and 60 transitions. Second operand 10 states. [2020-09-25 02:20:32,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:20:32,884 INFO L93 Difference]: Finished difference Result 68 states and 73 transitions. [2020-09-25 02:20:32,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 02:20:32,885 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 49 [2020-09-25 02:20:32,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:20:32,885 INFO L225 Difference]: With dead ends: 68 [2020-09-25 02:20:32,886 INFO L226 Difference]: Without dead ends: 0 [2020-09-25 02:20:32,888 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=108, Invalid=312, Unknown=0, NotChecked=0, Total=420 [2020-09-25 02:20:32,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-25 02:20:32,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-25 02:20:32,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-25 02:20:32,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-25 02:20:32,889 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 49 [2020-09-25 02:20:32,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:20:32,890 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-25 02:20:32,890 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 02:20:32,890 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-25 02:20:32,890 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-25 02:20:32,890 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 02:20:32,893 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-25 02:20:33,072 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-09-25 02:20:33,072 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (= ~__BLAST_NONDET~0 |old(~__BLAST_NONDET~0)|) [2020-09-25 02:20:33,072 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-25 02:20:33,073 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-25 02:20:33,073 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-25 02:20:33,073 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-25 02:20:33,073 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-25 02:20:33,073 INFO L268 CegarLoopResult]: For program point L4-3(lines 3 5) no Hoare annotation was computed. [2020-09-25 02:20:33,073 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-09-25 02:20:33,073 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-09-25 02:20:33,074 INFO L268 CegarLoopResult]: For program point L4-1(line 4) no Hoare annotation was computed. [2020-09-25 02:20:33,074 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-09-25 02:20:33,074 INFO L271 CegarLoopResult]: At program point L27(lines 14 29) the Hoare annotation is: true [2020-09-25 02:20:33,074 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 14 29) no Hoare annotation was computed. [2020-09-25 02:20:33,074 INFO L268 CegarLoopResult]: For program point L23-2(lines 23 26) no Hoare annotation was computed. [2020-09-25 02:20:33,074 INFO L268 CegarLoopResult]: For program point L23-3(line 23) no Hoare annotation was computed. [2020-09-25 02:20:33,075 INFO L268 CegarLoopResult]: For program point L19(line 19) no Hoare annotation was computed. [2020-09-25 02:20:33,075 INFO L268 CegarLoopResult]: For program point L23-4(line 23) no Hoare annotation was computed. [2020-09-25 02:20:33,075 INFO L268 CegarLoopResult]: For program point L19-1(line 19) no Hoare annotation was computed. [2020-09-25 02:20:33,075 INFO L271 CegarLoopResult]: At program point L23-5(lines 23 26) the Hoare annotation is: true [2020-09-25 02:20:33,075 INFO L268 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-09-25 02:20:33,076 INFO L268 CegarLoopResult]: For program point L15-1(line 15) no Hoare annotation was computed. [2020-09-25 02:20:33,076 INFO L268 CegarLoopResult]: For program point L15-2(line 15) no Hoare annotation was computed. [2020-09-25 02:20:33,076 INFO L268 CegarLoopResult]: For program point L15-3(line 15) no Hoare annotation was computed. [2020-09-25 02:20:33,076 INFO L268 CegarLoopResult]: For program point L15-4(line 15) no Hoare annotation was computed. [2020-09-25 02:20:33,076 INFO L268 CegarLoopResult]: For program point L24(line 24) no Hoare annotation was computed. [2020-09-25 02:20:33,076 INFO L268 CegarLoopResult]: For program point L24-3(lines 24 26) no Hoare annotation was computed. [2020-09-25 02:20:33,077 INFO L268 CegarLoopResult]: For program point L20(line 20) no Hoare annotation was computed. [2020-09-25 02:20:33,077 INFO L268 CegarLoopResult]: For program point L24-4(line 24) no Hoare annotation was computed. [2020-09-25 02:20:33,077 INFO L268 CegarLoopResult]: For program point L20-1(line 20) no Hoare annotation was computed. [2020-09-25 02:20:33,077 INFO L268 CegarLoopResult]: For program point L24-5(line 24) no Hoare annotation was computed. [2020-09-25 02:20:33,077 INFO L264 CegarLoopResult]: At program point L24-6(lines 24 26) the Hoare annotation is: (<= (+ main_~i~0 1) main_~n~0) [2020-09-25 02:20:33,077 INFO L268 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2020-09-25 02:20:33,078 INFO L268 CegarLoopResult]: For program point L16-1(line 16) no Hoare annotation was computed. [2020-09-25 02:20:33,078 INFO L268 CegarLoopResult]: For program point L16-2(line 16) no Hoare annotation was computed. [2020-09-25 02:20:33,078 INFO L268 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2020-09-25 02:20:33,078 INFO L268 CegarLoopResult]: For program point L25-3(line 25) no Hoare annotation was computed. [2020-09-25 02:20:33,078 INFO L268 CegarLoopResult]: For program point L21(line 21) no Hoare annotation was computed. [2020-09-25 02:20:33,079 INFO L268 CegarLoopResult]: For program point L25-4(line 25) no Hoare annotation was computed. [2020-09-25 02:20:33,079 INFO L268 CegarLoopResult]: For program point L21-1(line 21) no Hoare annotation was computed. [2020-09-25 02:20:33,079 INFO L264 CegarLoopResult]: At program point L25-5(lines 25 26) the Hoare annotation is: (and (<= (+ main_~i~0 1) main_~n~0) (<= (+ main_~j~0 3) (+ main_~i~0 (* 2 main_~n~0)))) [2020-09-25 02:20:33,079 INFO L268 CegarLoopResult]: For program point L17(line 17) no Hoare annotation was computed. [2020-09-25 02:20:33,079 INFO L268 CegarLoopResult]: For program point L17-1(line 17) no Hoare annotation was computed. [2020-09-25 02:20:33,079 INFO L268 CegarLoopResult]: For program point L17-2(line 17) no Hoare annotation was computed. [2020-09-25 02:20:33,080 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 14 29) no Hoare annotation was computed. [2020-09-25 02:20:33,080 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 14 29) the Hoare annotation is: true [2020-09-25 02:20:33,080 INFO L264 CegarLoopResult]: At program point L26(line 26) the Hoare annotation is: (and (<= (+ main_~k~0 1) main_~j~0) (<= (+ main_~i~0 1) main_~n~0) (<= (+ main_~j~0 3) (+ main_~i~0 (* 2 main_~n~0)))) [2020-09-25 02:20:33,080 INFO L268 CegarLoopResult]: For program point L26-1(lines 25 26) no Hoare annotation was computed. [2020-09-25 02:20:33,080 INFO L268 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2020-09-25 02:20:33,081 INFO L268 CegarLoopResult]: For program point L22-1(line 22) no Hoare annotation was computed. [2020-09-25 02:20:33,081 INFO L268 CegarLoopResult]: For program point L18(line 18) no Hoare annotation was computed. [2020-09-25 02:20:33,081 INFO L268 CegarLoopResult]: For program point L18-1(line 18) no Hoare annotation was computed. [2020-09-25 02:20:33,081 INFO L268 CegarLoopResult]: For program point L18-2(line 18) no Hoare annotation was computed. [2020-09-25 02:20:33,081 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-09-25 02:20:33,081 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 6 11) no Hoare annotation was computed. [2020-09-25 02:20:33,082 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-09-25 02:20:33,082 INFO L268 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-09-25 02:20:33,082 INFO L268 CegarLoopResult]: For program point L7-2(lines 6 11) no Hoare annotation was computed. [2020-09-25 02:20:33,082 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-09-25 02:20:33,106 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 02:20:33 BoogieIcfgContainer [2020-09-25 02:20:33,107 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 02:20:33,111 INFO L168 Benchmark]: Toolchain (without parser) took 16566.12 ms. Allocated memory was 140.0 MB in the beginning and 324.0 MB in the end (delta: 184.0 MB). Free memory was 102.4 MB in the beginning and 146.1 MB in the end (delta: -43.7 MB). Peak memory consumption was 140.3 MB. Max. memory is 7.1 GB. [2020-09-25 02:20:33,112 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 140.0 MB. Free memory was 120.3 MB in the beginning and 119.8 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. [2020-09-25 02:20:33,113 INFO L168 Benchmark]: CACSL2BoogieTranslator took 315.39 ms. Allocated memory is still 140.0 MB. Free memory was 101.6 MB in the beginning and 92.1 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. [2020-09-25 02:20:33,114 INFO L168 Benchmark]: Boogie Preprocessor took 119.08 ms. Allocated memory was 140.0 MB in the beginning and 202.4 MB in the end (delta: 62.4 MB). Free memory was 92.1 MB in the beginning and 180.8 MB in the end (delta: -88.7 MB). Peak memory consumption was 13.4 MB. Max. memory is 7.1 GB. [2020-09-25 02:20:33,115 INFO L168 Benchmark]: RCFGBuilder took 450.04 ms. Allocated memory is still 202.4 MB. Free memory was 180.8 MB in the beginning and 164.1 MB in the end (delta: 16.7 MB). Peak memory consumption was 16.7 MB. Max. memory is 7.1 GB. [2020-09-25 02:20:33,116 INFO L168 Benchmark]: TraceAbstraction took 15671.49 ms. Allocated memory was 202.4 MB in the beginning and 324.0 MB in the end (delta: 121.6 MB). Free memory was 164.1 MB in the beginning and 146.1 MB in the end (delta: 17.9 MB). Peak memory consumption was 139.6 MB. Max. memory is 7.1 GB. [2020-09-25 02:20:33,120 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 140.0 MB. Free memory was 120.3 MB in the beginning and 119.8 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 315.39 ms. Allocated memory is still 140.0 MB. Free memory was 101.6 MB in the beginning and 92.1 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 119.08 ms. Allocated memory was 140.0 MB in the beginning and 202.4 MB in the end (delta: 62.4 MB). Free memory was 92.1 MB in the beginning and 180.8 MB in the end (delta: -88.7 MB). Peak memory consumption was 13.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 450.04 ms. Allocated memory is still 202.4 MB. Free memory was 180.8 MB in the beginning and 164.1 MB in the end (delta: 16.7 MB). Peak memory consumption was 16.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 15671.49 ms. Allocated memory was 202.4 MB in the beginning and 324.0 MB in the end (delta: 121.6 MB). Free memory was 164.1 MB in the beginning and 146.1 MB in the end (delta: 17.9 MB). Peak memory consumption was 139.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 8]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: i + 1 <= n - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: i + 1 <= n && j + 3 <= i + 2 * n - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 59 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 15.3s, OverallIterations: 4, TraceHistogramMax: 2, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 166 SDtfs, 359 SDslu, 121 SDs, 0 SdLazy, 774 SolverSat, 47 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 63 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.6s 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, 4 MinimizatonAttempts, 24 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 10 LocationsWithAnnotation, 15 PreInvPairs, 28 NumberOfFragments, 49 HoareAnnotationTreeSize, 15 FomulaSimplifications, 478 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 10 FomulaSimplificationsInter, 89 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 13.5s InterpolantComputationTime, 169 NumberOfCodeBlocks, 169 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 165 ConstructedInterpolants, 0 QuantifiedInterpolants, 13386 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 3 PerfectInterpolantSequences, 15/17 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...