/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 SequenceOfStatements --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 --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops-crafted-1/sumt8.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 11:05:20,334 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 11:05:20,337 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 11:05:20,360 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 11:05:20,361 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 11:05:20,362 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 11:05:20,363 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 11:05:20,365 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 11:05:20,366 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 11:05:20,367 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 11:05:20,368 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 11:05:20,369 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 11:05:20,370 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 11:05:20,371 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 11:05:20,372 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 11:05:20,373 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 11:05:20,373 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 11:05:20,374 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 11:05:20,376 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 11:05:20,378 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 11:05:20,379 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 11:05:20,380 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 11:05:20,381 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 11:05:20,382 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 11:05:20,385 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 11:05:20,385 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 11:05:20,385 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 11:05:20,386 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 11:05:20,388 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 11:05:20,389 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 11:05:20,389 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 11:05:20,390 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 11:05:20,390 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 11:05:20,394 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 11:05:20,395 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 11:05:20,395 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 11:05:20,397 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 11:05:20,397 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 11:05:20,397 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 11:05:20,398 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 11:05:20,399 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 11:05:20,400 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 [2020-10-13 11:05:20,445 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 11:05:20,446 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 11:05:20,450 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 11:05:20,450 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 11:05:20,450 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 11:05:20,450 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 11:05:20,451 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 11:05:20,451 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 11:05:20,451 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 11:05:20,451 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 11:05:20,451 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 11:05:20,452 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 11:05:20,452 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 11:05:20,452 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 11:05:20,452 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 11:05:20,452 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 11:05:20,452 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 11:05:20,453 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 11:05:20,453 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 11:05:20,454 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 11:05:20,454 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 11:05:20,454 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 11:05:20,455 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 11:05:20,455 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 11:05:20,455 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 11:05:20,455 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 11:05:20,455 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 11:05:20,456 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 11:05:20,456 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 11:05:20,456 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 -> SequenceOfStatements 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;unknown-allowed=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;unknown-allowed=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;unknown-allowed=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;unknown-allowed=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;unknown-allowed=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;unknown-allowed=true; [2020-10-13 11:05:20,755 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 11:05:20,767 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 11:05:20,772 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 11:05:20,775 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 11:05:20,775 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 11:05:20,776 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/sumt8.c [2020-10-13 11:05:20,846 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/de9f38a0d/8fedc524b6e74b31981370b50a34d2ad/FLAG3d19c253c [2020-10-13 11:05:21,301 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 11:05:21,302 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops-crafted-1/sumt8.c [2020-10-13 11:05:21,309 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/de9f38a0d/8fedc524b6e74b31981370b50a34d2ad/FLAG3d19c253c [2020-10-13 11:05:21,684 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/de9f38a0d/8fedc524b6e74b31981370b50a34d2ad [2020-10-13 11:05:21,691 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 11:05:21,693 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 11:05:21,694 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 11:05:21,694 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 11:05:21,699 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 11:05:21,700 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:05:21" (1/1) ... [2020-10-13 11:05:21,703 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75024412 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:05:21, skipping insertion in model container [2020-10-13 11:05:21,703 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:05:21" (1/1) ... [2020-10-13 11:05:21,712 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 11:05:21,730 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 11:05:21,906 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 11:05:21,910 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 11:05:21,933 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 11:05:21,948 INFO L208 MainTranslator]: Completed translation [2020-10-13 11:05:21,948 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:05:21 WrapperNode [2020-10-13 11:05:21,949 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 11:05:21,949 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 11:05:21,950 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 11:05:21,950 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 11:05:22,051 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:05:21" (1/1) ... [2020-10-13 11:05:22,053 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:05:21" (1/1) ... [2020-10-13 11:05:22,066 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:05:21" (1/1) ... [2020-10-13 11:05:22,067 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:05:21" (1/1) ... [2020-10-13 11:05:22,080 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:05:21" (1/1) ... [2020-10-13 11:05:22,087 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:05:21" (1/1) ... [2020-10-13 11:05:22,099 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:05:21" (1/1) ... [2020-10-13 11:05:22,101 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 11:05:22,102 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 11:05:22,102 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 11:05:22,103 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 11:05:22,104 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:05:21" (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 [2020-10-13 11:05:22,173 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 11:05:22,173 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 11:05:22,173 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-13 11:05:22,174 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-13 11:05:22,174 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 11:05:22,174 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 11:05:22,174 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-13 11:05:22,174 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-13 11:05:22,174 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-13 11:05:22,174 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 11:05:22,175 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 11:05:22,175 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 11:05:22,175 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 11:05:22,525 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 11:05:22,526 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 11:05:22,529 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:05:22 BoogieIcfgContainer [2020-10-13 11:05:22,529 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 11:05:22,531 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 11:05:22,531 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 11:05:22,534 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 11:05:22,534 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 11:05:21" (1/3) ... [2020-10-13 11:05:22,535 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d511bca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:05:22, skipping insertion in model container [2020-10-13 11:05:22,535 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:05:21" (2/3) ... [2020-10-13 11:05:22,536 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d511bca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:05:22, skipping insertion in model container [2020-10-13 11:05:22,536 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:05:22" (3/3) ... [2020-10-13 11:05:22,537 INFO L109 eAbstractionObserver]: Analyzing ICFG sumt8.c [2020-10-13 11:05:22,547 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 11:05:22,554 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 11:05:22,568 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 11:05:22,591 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 11:05:22,591 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 11:05:22,591 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 11:05:22,591 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 11:05:22,591 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 11:05:22,592 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 11:05:22,592 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 11:05:22,592 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 11:05:22,610 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2020-10-13 11:05:22,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-13 11:05:22,616 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 11:05:22,617 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 11:05:22,617 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 11:05:22,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 11:05:22,623 INFO L82 PathProgramCache]: Analyzing trace with hash -1078562183, now seen corresponding path program 1 times [2020-10-13 11:05:22,632 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 11:05:22,632 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1194057482] [2020-10-13 11:05:22,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 11:05:22,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:05:22,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:05:23,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:05:23,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 11:05:23,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:05:23,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 405 [2020-10-13 11:05:23,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:05:23,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 11:05:23,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 11:05:23,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 11:05:23,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 11:05:23,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 11:05:23,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:05:23,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:05:23,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:05:23,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:05:23,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:05:23,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 11:05:23,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:05:23,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:05:23,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:05:23,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:05:23,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 11:05:23,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 11:05:23,541 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1194057482] [2020-10-13 11:05:23,544 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 11:05:23,544 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-13 11:05:23,545 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624747019] [2020-10-13 11:05:23,551 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 11:05:23,552 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 11:05:23,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 11:05:23,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-13 11:05:23,570 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 8 states. [2020-10-13 11:05:30,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 11:05:30,316 INFO L93 Difference]: Finished difference Result 71 states and 105 transitions. [2020-10-13 11:05:30,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 11:05:30,318 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 14 [2020-10-13 11:05:30,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 11:05:30,329 INFO L225 Difference]: With dead ends: 71 [2020-10-13 11:05:30,329 INFO L226 Difference]: Without dead ends: 39 [2020-10-13 11:05:30,334 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2020-10-13 11:05:30,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-10-13 11:05:30,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 31. [2020-10-13 11:05:30,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-13 11:05:30,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 38 transitions. [2020-10-13 11:05:30,374 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 38 transitions. Word has length 14 [2020-10-13 11:05:30,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 11:05:30,375 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 38 transitions. [2020-10-13 11:05:30,375 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 11:05:30,375 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 38 transitions. [2020-10-13 11:05:30,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-13 11:05:30,376 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 11:05:30,376 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 11:05:30,376 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 11:05:30,377 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 11:05:30,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 11:05:30,377 INFO L82 PathProgramCache]: Analyzing trace with hash 1550149586, now seen corresponding path program 1 times [2020-10-13 11:05:30,378 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 11:05:30,378 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [561440094] [2020-10-13 11:05:30,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 11:05:30,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:05:30,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:05:30,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:05:30,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:05:30,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:05:31,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:05:31,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 11:05:31,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 11:05:31,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 770 [2020-10-13 11:05:31,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:05:31,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 11:05:31,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-13 11:05:31,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 11:05:31,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 11:05:31,684 WARN L193 SmtUtils]: Spent 472.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 12 [2020-10-13 11:05:31,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 11:05:31,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:05:31,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:05:31,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:05:31,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:05:31,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:05:31,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 11:05:31,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:05:31,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:05:31,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:05:31,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:05:31,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:05:31,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-13 11:05:31,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:05:31,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:05:31,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:05:31,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 11:05:31,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:05:31,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 11:05:31,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:05:31,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 11:05:31,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:05:31,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 11:05:31,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:05:31,805 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 11:05:31,809 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [561440094] [2020-10-13 11:05:31,809 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 11:05:31,809 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 11:05:31,810 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384423254] [2020-10-13 11:05:31,811 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 11:05:31,812 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 11:05:31,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 11:05:31,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 11:05:31,814 INFO L87 Difference]: Start difference. First operand 31 states and 38 transitions. Second operand 5 states. [2020-10-13 11:05:42,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 11:05:42,404 INFO L93 Difference]: Finished difference Result 52 states and 68 transitions. [2020-10-13 11:05:42,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 11:05:42,407 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2020-10-13 11:05:42,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 11:05:42,410 INFO L225 Difference]: With dead ends: 52 [2020-10-13 11:05:42,410 INFO L226 Difference]: Without dead ends: 36 [2020-10-13 11:05:42,411 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-13 11:05:42,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-13 11:05:42,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2020-10-13 11:05:42,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-13 11:05:42,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 43 transitions. [2020-10-13 11:05:42,436 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 43 transitions. Word has length 22 [2020-10-13 11:05:42,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 11:05:42,437 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 43 transitions. [2020-10-13 11:05:42,437 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 11:05:42,437 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 43 transitions. [2020-10-13 11:05:42,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-13 11:05:42,438 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 11:05:42,438 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 11:05:42,439 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 11:05:42,439 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 11:05:42,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 11:05:42,440 INFO L82 PathProgramCache]: Analyzing trace with hash 1734885426, now seen corresponding path program 1 times [2020-10-13 11:05:42,440 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 11:05:42,441 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [549891270] [2020-10-13 11:05:42,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 11:05:42,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:05:42,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:05:42,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:05:42,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:05:43,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:05:43,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-13 11:05:43,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 11:05:43,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1116 [2020-10-13 11:05:43,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:05:43,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 11:05:43,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-13 11:05:43,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 11:05:43,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:05:43,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 11:05:43,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:05:43,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:05:43,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:05:43,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:05:43,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:05:43,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 11:05:43,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:05:43,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:05:43,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:05:43,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:05:43,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:05:43,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-13 11:05:43,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:05:43,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:05:43,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:05:43,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 11:05:43,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:05:43,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 11:05:43,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:05:43,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 11:05:43,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:05:43,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 11:05:43,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:05:43,731 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 11:05:43,732 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [549891270] [2020-10-13 11:05:43,732 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 11:05:43,732 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 11:05:43,732 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570541663] [2020-10-13 11:05:43,733 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 11:05:43,733 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 11:05:43,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 11:05:43,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-13 11:05:43,734 INFO L87 Difference]: Start difference. First operand 35 states and 43 transitions. Second operand 8 states. [2020-10-13 11:05:48,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 11:05:48,170 INFO L93 Difference]: Finished difference Result 35 states and 43 transitions. [2020-10-13 11:05:48,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 11:05:48,172 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 23 [2020-10-13 11:05:48,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 11:05:48,173 INFO L225 Difference]: With dead ends: 35 [2020-10-13 11:05:48,173 INFO L226 Difference]: Without dead ends: 0 [2020-10-13 11:05:48,174 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2020-10-13 11:05:48,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-13 11:05:48,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-13 11:05:48,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-13 11:05:48,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-13 11:05:48,175 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 23 [2020-10-13 11:05:48,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 11:05:48,175 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-13 11:05:48,176 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 11:05:48,176 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-13 11:05:48,176 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-13 11:05:48,176 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 11:05:48,178 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-13 11:05:48,318 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-10-13 11:05:48,318 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (= ~SIZE~0 |old(~SIZE~0)|) [2020-10-13 11:05:48,318 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-13 11:05:48,319 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-13 11:05:48,319 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-13 11:05:48,319 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-13 11:05:48,319 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-13 11:05:48,319 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-10-13 11:05:48,319 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-10-13 11:05:48,319 INFO L268 CegarLoopResult]: For program point L4-2(lines 3 5) no Hoare annotation was computed. [2020-10-13 11:05:48,320 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-10-13 11:05:48,320 INFO L268 CegarLoopResult]: For program point L31(lines 31 36) no Hoare annotation was computed. [2020-10-13 11:05:48,323 INFO L268 CegarLoopResult]: For program point L27(lines 27 36) no Hoare annotation was computed. [2020-10-13 11:05:48,323 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 14 41) no Hoare annotation was computed. [2020-10-13 11:05:48,323 INFO L268 CegarLoopResult]: For program point L23(lines 23 36) no Hoare annotation was computed. [2020-10-13 11:05:48,323 INFO L268 CegarLoopResult]: For program point L19-2(lines 19 39) no Hoare annotation was computed. [2020-10-13 11:05:48,323 INFO L268 CegarLoopResult]: For program point L33(lines 33 36) no Hoare annotation was computed. [2020-10-13 11:05:48,323 INFO L268 CegarLoopResult]: For program point L33-2(lines 21 36) no Hoare annotation was computed. [2020-10-13 11:05:48,324 INFO L268 CegarLoopResult]: For program point L29(lines 29 36) no Hoare annotation was computed. [2020-10-13 11:05:48,324 INFO L268 CegarLoopResult]: For program point L25(lines 25 36) no Hoare annotation was computed. [2020-10-13 11:05:48,324 INFO L268 CegarLoopResult]: For program point L21(lines 21 36) no Hoare annotation was computed. [2020-10-13 11:05:48,324 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 14 41) no Hoare annotation was computed. [2020-10-13 11:05:48,324 INFO L264 CegarLoopResult]: At program point L38(line 38) the Hoare annotation is: (let ((.cse1 (+ main_~l~0 (* 4294967296 (div (+ main_~i~0 main_~j~0 main_~k~0 main_~v1~0 main_~v2~0 main_~v3~0 main_~v4~0 main_~v5~0) 4294967296)))) (.cse0 (+ main_~i~0 main_~j~0 main_~v1~0 main_~k~0 main_~v2~0 main_~v3~0 main_~v4~0 main_~v5~0 (* 4294967296 (div main_~l~0 4294967296))))) (and (<= .cse0 .cse1) (<= .cse1 .cse0))) [2020-10-13 11:05:48,325 INFO L264 CegarLoopResult]: At program point L38-1(lines 19 39) the Hoare annotation is: (let ((.cse1 (+ main_~l~0 (* 4294967296 (div (+ main_~i~0 main_~j~0 main_~k~0 main_~v1~0 main_~v2~0 main_~v3~0 main_~v4~0 main_~v5~0) 4294967296)))) (.cse0 (+ main_~i~0 main_~j~0 main_~v1~0 main_~k~0 main_~v2~0 main_~v3~0 main_~v4~0 main_~v5~0 (* 4294967296 (div main_~l~0 4294967296))))) (and (<= .cse0 .cse1) (<= .cse1 .cse0))) [2020-10-13 11:05:48,325 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 14 41) the Hoare annotation is: true [2020-10-13 11:05:48,325 INFO L268 CegarLoopResult]: For program point L18(line 18) no Hoare annotation was computed. [2020-10-13 11:05:48,329 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-10-13 11:05:48,329 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 6 11) no Hoare annotation was computed. [2020-10-13 11:05:48,329 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-10-13 11:05:48,330 INFO L268 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-10-13 11:05:48,330 INFO L268 CegarLoopResult]: For program point L7-2(lines 6 11) no Hoare annotation was computed. [2020-10-13 11:05:48,330 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-10-13 11:05:48,357 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 11:05:48 BoogieIcfgContainer [2020-10-13 11:05:48,357 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-13 11:05:48,361 INFO L168 Benchmark]: Toolchain (without parser) took 26665.84 ms. Allocated memory was 143.7 MB in the beginning and 273.2 MB in the end (delta: 129.5 MB). Free memory was 104.5 MB in the beginning and 181.8 MB in the end (delta: -77.3 MB). Peak memory consumption was 52.2 MB. Max. memory is 7.1 GB. [2020-10-13 11:05:48,362 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 143.7 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-13 11:05:48,363 INFO L168 Benchmark]: CACSL2BoogieTranslator took 254.68 ms. Allocated memory is still 143.7 MB. Free memory was 104.3 MB in the beginning and 93.8 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. [2020-10-13 11:05:48,364 INFO L168 Benchmark]: Boogie Preprocessor took 151.96 ms. Allocated memory was 143.7 MB in the beginning and 203.9 MB in the end (delta: 60.3 MB). Free memory was 93.8 MB in the beginning and 182.0 MB in the end (delta: -88.1 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. [2020-10-13 11:05:48,366 INFO L168 Benchmark]: RCFGBuilder took 427.82 ms. Allocated memory is still 203.9 MB. Free memory was 182.0 MB in the beginning and 165.9 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 7.1 GB. [2020-10-13 11:05:48,372 INFO L168 Benchmark]: TraceAbstraction took 25826.36 ms. Allocated memory was 203.9 MB in the beginning and 273.2 MB in the end (delta: 69.2 MB). Free memory was 165.3 MB in the beginning and 181.8 MB in the end (delta: -16.6 MB). Peak memory consumption was 52.6 MB. Max. memory is 7.1 GB. [2020-10-13 11:05:48,381 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 143.7 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 254.68 ms. Allocated memory is still 143.7 MB. Free memory was 104.3 MB in the beginning and 93.8 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 151.96 ms. Allocated memory was 143.7 MB in the beginning and 203.9 MB in the end (delta: 60.3 MB). Free memory was 93.8 MB in the beginning and 182.0 MB in the end (delta: -88.1 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 427.82 ms. Allocated memory is still 203.9 MB. Free memory was 182.0 MB in the beginning and 165.9 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 25826.36 ms. Allocated memory was 203.9 MB in the beginning and 273.2 MB in the end (delta: 69.2 MB). Free memory was 165.3 MB in the beginning and 181.8 MB in the end (delta: -16.6 MB). Peak memory consumption was 52.6 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: 19]: Loop Invariant Derived loop invariant: i + j + v1 + k + v2 + v3 + v4 + v5 + 4294967296 * (l / 4294967296) <= l + 4294967296 * ((i + j + k + v1 + v2 + v3 + v4 + v5) / 4294967296) && l + 4294967296 * ((i + j + k + v1 + v2 + v3 + v4 + v5) / 4294967296) <= i + j + v1 + k + v2 + v3 + v4 + v5 + 4294967296 * (l / 4294967296) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 32 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 25.5s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 21.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 34 SDtfs, 124 SDslu, 86 SDs, 0 SdLazy, 315 SolverSat, 45 SolverUnsat, 10 SolverUnknown, 0 SolverNotchecked, 20.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 44 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=35occurred 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, 3 MinimizatonAttempts, 9 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 11 PreInvPairs, 17 NumberOfFragments, 129 HoareAnnotationTreeSize, 11 FomulaSimplifications, 621 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 39 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 3.4s InterpolantComputationTime, 59 NumberOfCodeBlocks, 59 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 56 ConstructedInterpolants, 0 QuantifiedInterpolants, 12187 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 11/12 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...