/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=BIGGEST --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/recursive-simple/id2_b3_o5.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 18:24:05,700 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 18:24:05,702 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 18:24:05,742 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 18:24:05,742 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 18:24:05,749 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 18:24:05,751 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 18:24:05,754 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 18:24:05,757 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 18:24:05,759 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 18:24:05,760 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 18:24:05,761 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 18:24:05,761 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 18:24:05,763 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 18:24:05,766 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 18:24:05,767 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 18:24:05,769 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 18:24:05,770 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 18:24:05,771 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 18:24:05,778 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 18:24:05,780 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 18:24:05,781 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 18:24:05,782 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 18:24:05,782 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 18:24:05,794 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 18:24:05,794 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 18:24:05,794 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 18:24:05,800 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 18:24:05,801 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 18:24:05,802 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 18:24:05,802 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 18:24:05,802 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 18:24:05,806 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 18:24:05,807 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 18:24:05,808 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 18:24:05,808 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 18:24:05,808 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 18:24:05,809 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 18:24:05,809 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 18:24:05,810 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 18:24:05,810 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 18:24:05,811 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 [2020-10-12 18:24:05,832 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 18:24:05,832 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 18:24:05,833 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 18:24:05,833 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 18:24:05,834 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 18:24:05,834 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 18:24:05,834 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 18:24:05,834 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 18:24:05,834 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 18:24:05,834 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 18:24:05,835 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 18:24:05,835 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 18:24:05,835 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 18:24:05,835 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 18:24:05,835 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 18:24:05,836 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 18:24:05,836 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 18:24:05,836 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 18:24:05,836 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 18:24:05,836 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 18:24:05,836 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 18:24:05,837 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 18:24:05,837 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 18:24:05,837 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 18:24:05,837 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 18:24:05,837 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 18:24:05,838 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 18:24:05,838 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 18:24:05,838 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 18:24:05,838 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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 18:24:06,108 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 18:24:06,119 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 18:24:06,123 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 18:24:06,124 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 18:24:06,125 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 18:24:06,125 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/id2_b3_o5.c [2020-10-12 18:24:06,194 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1e4c8f5d3/b290556d197540488751beb21884ff52/FLAG1cdc174b4 [2020-10-12 18:24:06,636 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 18:24:06,636 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/id2_b3_o5.c [2020-10-12 18:24:06,641 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1e4c8f5d3/b290556d197540488751beb21884ff52/FLAG1cdc174b4 [2020-10-12 18:24:07,055 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1e4c8f5d3/b290556d197540488751beb21884ff52 [2020-10-12 18:24:07,063 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 18:24:07,065 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 18:24:07,066 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 18:24:07,066 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 18:24:07,070 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 18:24:07,071 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 06:24:07" (1/1) ... [2020-10-12 18:24:07,074 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31b9b948 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:24:07, skipping insertion in model container [2020-10-12 18:24:07,074 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 06:24:07" (1/1) ... [2020-10-12 18:24:07,083 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 18:24:07,101 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 18:24:07,259 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 18:24:07,264 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 18:24:07,277 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 18:24:07,290 INFO L208 MainTranslator]: Completed translation [2020-10-12 18:24:07,290 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:24:07 WrapperNode [2020-10-12 18:24:07,291 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 18:24:07,291 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 18:24:07,291 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 18:24:07,292 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 18:24:07,301 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:24:07" (1/1) ... [2020-10-12 18:24:07,301 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:24:07" (1/1) ... [2020-10-12 18:24:07,305 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:24:07" (1/1) ... [2020-10-12 18:24:07,306 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:24:07" (1/1) ... [2020-10-12 18:24:07,382 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:24:07" (1/1) ... [2020-10-12 18:24:07,385 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:24:07" (1/1) ... [2020-10-12 18:24:07,386 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:24:07" (1/1) ... [2020-10-12 18:24:07,387 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 18:24:07,388 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 18:24:07,388 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 18:24:07,388 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 18:24:07,389 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:24:07" (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 [2020-10-12 18:24:07,446 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 18:24:07,446 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 18:24:07,447 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2020-10-12 18:24:07,447 INFO L138 BoogieDeclarations]: Found implementation of procedure id2 [2020-10-12 18:24:07,447 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 18:24:07,447 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-10-12 18:24:07,447 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 18:24:07,447 INFO L130 BoogieDeclarations]: Found specification of procedure id [2020-10-12 18:24:07,447 INFO L130 BoogieDeclarations]: Found specification of procedure id2 [2020-10-12 18:24:07,448 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 18:24:07,448 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 18:24:07,448 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 18:24:07,613 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 18:24:07,613 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-12 18:24:07,617 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 06:24:07 BoogieIcfgContainer [2020-10-12 18:24:07,617 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 18:24:07,619 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 18:24:07,619 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 18:24:07,622 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 18:24:07,622 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 06:24:07" (1/3) ... [2020-10-12 18:24:07,623 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fbd5b20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 06:24:07, skipping insertion in model container [2020-10-12 18:24:07,623 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:24:07" (2/3) ... [2020-10-12 18:24:07,624 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fbd5b20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 06:24:07, skipping insertion in model container [2020-10-12 18:24:07,624 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 06:24:07" (3/3) ... [2020-10-12 18:24:07,626 INFO L109 eAbstractionObserver]: Analyzing ICFG id2_b3_o5.c [2020-10-12 18:24:07,636 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 18:24:07,644 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 18:24:07,659 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 18:24:07,686 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 18:24:07,687 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 18:24:07,687 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 18:24:07,687 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 18:24:07,687 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 18:24:07,687 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 18:24:07,687 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 18:24:07,688 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 18:24:07,711 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2020-10-12 18:24:07,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-12 18:24:07,722 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:24:07,723 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:24:07,723 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:24:07,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:24:07,730 INFO L82 PathProgramCache]: Analyzing trace with hash 128923731, now seen corresponding path program 1 times [2020-10-12 18:24:07,740 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:24:07,741 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [516016509] [2020-10-12 18:24:07,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:24:07,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:24:07,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:24:07,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:24:07,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-12 18:24:07,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:24:07,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-12 18:24:07,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:24:07,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 18:24:07,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 18:24:07,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 18:24:07,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 18:24:08,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:24:08,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:24:08,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:24:08,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:24:08,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 18:24:08,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:24:08,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 18:24:08,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:24:08,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:24:08,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:24:08,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:24:08,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:24:08,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-12 18:24:08,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:24:08,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:24:08,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:24:08,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 18:24:08,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:24:08,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-12 18:24:08,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:24:08,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 18:24:08,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:24:08,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 18:24:08,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:24:08,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 18:24:08,181 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [516016509] [2020-10-12 18:24:08,183 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 18:24:08,183 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 18:24:08,184 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339888871] [2020-10-12 18:24:08,190 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 18:24:08,190 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:24:08,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 18:24:08,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 18:24:08,207 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 5 states. [2020-10-12 18:24:08,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:24:08,261 INFO L93 Difference]: Finished difference Result 40 states and 46 transitions. [2020-10-12 18:24:08,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 18:24:08,263 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-12 18:24:08,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:24:08,274 INFO L225 Difference]: With dead ends: 40 [2020-10-12 18:24:08,275 INFO L226 Difference]: Without dead ends: 26 [2020-10-12 18:24:08,278 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 18:24:08,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-10-12 18:24:08,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-10-12 18:24:08,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-10-12 18:24:08,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2020-10-12 18:24:08,325 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 13 [2020-10-12 18:24:08,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:24:08,326 INFO L479 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2020-10-12 18:24:08,326 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 18:24:08,326 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2020-10-12 18:24:08,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-12 18:24:08,328 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:24:08,329 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] [2020-10-12 18:24:08,329 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 18:24:08,330 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:24:08,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:24:08,330 INFO L82 PathProgramCache]: Analyzing trace with hash 1945633833, now seen corresponding path program 1 times [2020-10-12 18:24:08,330 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:24:08,331 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1160157155] [2020-10-12 18:24:08,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:24:08,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:24:08,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:24:08,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:24:08,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:24:08,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-12 18:24:08,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:24:08,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 265 [2020-10-12 18:24:08,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:24:08,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 18:24:08,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-12 18:24:08,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 18:24:08,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 18:24:08,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:24:08,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:24:08,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:24:08,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:24:08,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 18:24:08,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:24:08,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 18:24:08,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:24:08,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:24:08,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:24:08,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:24:08,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:24:08,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-12 18:24:08,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:24:08,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:24:08,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:24:08,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:24:08,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-12 18:24:08,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:24:08,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-10-12 18:24:08,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:24:08,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 18:24:08,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-12 18:24:08,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 18:24:08,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:24:08,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-12 18:24:08,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:24:08,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:24:08,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:24:08,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 18:24:08,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:24:08,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 18:24:08,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:24:08,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 18:24:08,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:24:08,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 18:24:08,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:24:08,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 18:24:08,936 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1160157155] [2020-10-12 18:24:08,936 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 18:24:08,937 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-12 18:24:08,937 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008379937] [2020-10-12 18:24:08,939 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 18:24:08,939 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:24:08,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 18:24:08,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-12 18:24:08,940 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand 7 states. [2020-10-12 18:24:08,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:24:08,969 INFO L93 Difference]: Finished difference Result 44 states and 52 transitions. [2020-10-12 18:24:08,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 18:24:08,970 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 20 [2020-10-12 18:24:08,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:24:08,971 INFO L225 Difference]: With dead ends: 44 [2020-10-12 18:24:08,972 INFO L226 Difference]: Without dead ends: 32 [2020-10-12 18:24:08,973 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-12 18:24:08,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-12 18:24:08,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2020-10-12 18:24:08,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-10-12 18:24:08,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2020-10-12 18:24:08,981 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 20 [2020-10-12 18:24:08,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:24:08,982 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2020-10-12 18:24:08,982 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 18:24:08,982 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2020-10-12 18:24:08,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-12 18:24:08,983 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:24:08,983 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] [2020-10-12 18:24:08,983 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 18:24:08,984 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:24:08,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:24:08,984 INFO L82 PathProgramCache]: Analyzing trace with hash 1974262984, now seen corresponding path program 1 times [2020-10-12 18:24:08,984 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:24:08,985 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1487623762] [2020-10-12 18:24:08,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:24:08,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:24:08,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:24:09,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:24:09,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-12 18:24:09,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:24:09,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-12 18:24:09,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:24:09,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 18:24:09,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-12 18:24:09,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 18:24:09,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:24:09,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:24:09,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:24:09,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:24:09,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:24:09,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 18:24:09,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:24:09,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:24:09,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:24:09,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:24:09,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:24:09,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:24:09,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:24:09,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-12 18:24:09,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:24:09,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:24:09,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:24:09,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-12 18:24:09,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:24:09,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-12 18:24:09,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:24:09,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 18:24:09,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:24:09,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 18:24:09,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:24:09,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-12 18:24:09,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:24:09,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:24:09,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:24:09,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 18:24:09,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:24:09,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 18:24:09,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:24:09,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:24:09,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:24:09,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:24:09,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:24:09,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 18:24:09,113 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1487623762] [2020-10-12 18:24:09,113 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 18:24:09,113 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 18:24:09,113 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229754421] [2020-10-12 18:24:09,114 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 18:24:09,114 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:24:09,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 18:24:09,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 18:24:09,115 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand 5 states. [2020-10-12 18:24:09,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:24:09,130 INFO L93 Difference]: Finished difference Result 30 states and 34 transitions. [2020-10-12 18:24:09,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 18:24:09,130 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2020-10-12 18:24:09,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:24:09,131 INFO L225 Difference]: With dead ends: 30 [2020-10-12 18:24:09,131 INFO L226 Difference]: Without dead ends: 0 [2020-10-12 18:24:09,132 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 18:24:09,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-12 18:24:09,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-12 18:24:09,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-12 18:24:09,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-12 18:24:09,133 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20 [2020-10-12 18:24:09,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:24:09,133 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-12 18:24:09,133 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 18:24:09,134 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-12 18:24:09,134 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-12 18:24:09,134 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 18:24:09,136 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-12 18:24:09,160 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-10-12 18:24:09,160 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-12 18:24:09,160 INFO L268 CegarLoopResult]: For program point L17(line 17) no Hoare annotation was computed. [2020-10-12 18:24:09,161 INFO L271 CegarLoopResult]: At program point L16(line 16) the Hoare annotation is: true [2020-10-12 18:24:09,161 INFO L268 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-10-12 18:24:09,161 INFO L268 CegarLoopResult]: For program point L16-1(line 16) no Hoare annotation was computed. [2020-10-12 18:24:09,161 INFO L268 CegarLoopResult]: For program point id2EXIT(lines 14 19) no Hoare annotation was computed. [2020-10-12 18:24:09,161 INFO L271 CegarLoopResult]: At program point id2ENTRY(lines 14 19) the Hoare annotation is: true [2020-10-12 18:24:09,161 INFO L268 CegarLoopResult]: For program point id2FINAL(lines 14 19) no Hoare annotation was computed. [2020-10-12 18:24:09,162 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-12 18:24:09,162 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-12 18:24:09,162 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-12 18:24:09,162 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-12 18:24:09,162 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 25) no Hoare annotation was computed. [2020-10-12 18:24:09,163 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 21 27) the Hoare annotation is: true [2020-10-12 18:24:09,163 INFO L268 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2020-10-12 18:24:09,163 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 21 27) no Hoare annotation was computed. [2020-10-12 18:24:09,163 INFO L268 CegarLoopResult]: For program point L24(lines 24 26) no Hoare annotation was computed. [2020-10-12 18:24:09,163 INFO L271 CegarLoopResult]: At program point L23(line 23) the Hoare annotation is: true [2020-10-12 18:24:09,163 INFO L268 CegarLoopResult]: For program point L23-1(line 23) no Hoare annotation was computed. [2020-10-12 18:24:09,163 INFO L268 CegarLoopResult]: For program point L24-2(lines 21 27) no Hoare annotation was computed. [2020-10-12 18:24:09,163 INFO L268 CegarLoopResult]: For program point idFINAL(lines 7 12) no Hoare annotation was computed. [2020-10-12 18:24:09,164 INFO L268 CegarLoopResult]: For program point idEXIT(lines 7 12) no Hoare annotation was computed. [2020-10-12 18:24:09,164 INFO L268 CegarLoopResult]: For program point L10(line 10) no Hoare annotation was computed. [2020-10-12 18:24:09,164 INFO L271 CegarLoopResult]: At program point L9(line 9) the Hoare annotation is: true [2020-10-12 18:24:09,164 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-10-12 18:24:09,164 INFO L268 CegarLoopResult]: For program point L9-1(line 9) no Hoare annotation was computed. [2020-10-12 18:24:09,164 INFO L271 CegarLoopResult]: At program point idENTRY(lines 7 12) the Hoare annotation is: true [2020-10-12 18:24:09,170 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.10 06:24:09 BoogieIcfgContainer [2020-10-12 18:24:09,170 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-12 18:24:09,173 INFO L168 Benchmark]: Toolchain (without parser) took 2107.59 ms. Allocated memory was 141.6 MB in the beginning and 233.8 MB in the end (delta: 92.3 MB). Free memory was 104.8 MB in the beginning and 167.5 MB in the end (delta: -62.7 MB). Peak memory consumption was 29.6 MB. Max. memory is 7.1 GB. [2020-10-12 18:24:09,174 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 141.6 MB. Free memory was 123.1 MB in the beginning and 122.9 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-12 18:24:09,175 INFO L168 Benchmark]: CACSL2BoogieTranslator took 225.50 ms. Allocated memory is still 141.6 MB. Free memory was 104.6 MB in the beginning and 94.9 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. [2020-10-12 18:24:09,176 INFO L168 Benchmark]: Boogie Preprocessor took 96.10 ms. Allocated memory was 141.6 MB in the beginning and 204.5 MB in the end (delta: 62.9 MB). Free memory was 94.9 MB in the beginning and 183.6 MB in the end (delta: -88.7 MB). Peak memory consumption was 13.1 MB. Max. memory is 7.1 GB. [2020-10-12 18:24:09,177 INFO L168 Benchmark]: RCFGBuilder took 229.89 ms. Allocated memory is still 204.5 MB. Free memory was 183.6 MB in the beginning and 171.0 MB in the end (delta: 12.5 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. [2020-10-12 18:24:09,178 INFO L168 Benchmark]: TraceAbstraction took 1551.61 ms. Allocated memory was 204.5 MB in the beginning and 233.8 MB in the end (delta: 29.4 MB). Free memory was 170.4 MB in the beginning and 167.5 MB in the end (delta: 2.9 MB). Peak memory consumption was 32.3 MB. Max. memory is 7.1 GB. [2020-10-12 18:24:09,182 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 141.6 MB. Free memory was 123.1 MB in the beginning and 122.9 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 225.50 ms. Allocated memory is still 141.6 MB. Free memory was 104.6 MB in the beginning and 94.9 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 96.10 ms. Allocated memory was 141.6 MB in the beginning and 204.5 MB in the end (delta: 62.9 MB). Free memory was 94.9 MB in the beginning and 183.6 MB in the end (delta: -88.7 MB). Peak memory consumption was 13.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 229.89 ms. Allocated memory is still 204.5 MB. Free memory was 183.6 MB in the beginning and 171.0 MB in the end (delta: 12.5 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1551.61 ms. Allocated memory was 204.5 MB in the beginning and 233.8 MB in the end (delta: 29.4 MB). Free memory was 170.4 MB in the beginning and 167.5 MB in the end (delta: 2.9 MB). Peak memory consumption was 32.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 25]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 28 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.4s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 83 SDtfs, 4 SDslu, 288 SDs, 0 SdLazy, 32 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 34 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30occurred 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, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 11 PreInvPairs, 11 NumberOfFragments, 9 HoareAnnotationTreeSize, 11 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 53 NumberOfCodeBlocks, 53 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 50 ConstructedInterpolants, 0 QuantifiedInterpolants, 2342 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 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...