/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --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/recHanoi03-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-15 02:01:22,735 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 02:01:22,738 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 02:01:22,776 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 02:01:22,777 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 02:01:22,785 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 02:01:22,787 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 02:01:22,791 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 02:01:22,794 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 02:01:22,797 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 02:01:22,798 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 02:01:22,800 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 02:01:22,800 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 02:01:22,803 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 02:01:22,807 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 02:01:22,809 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 02:01:22,810 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 02:01:22,811 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 02:01:22,813 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 02:01:22,822 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 02:01:22,824 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 02:01:22,825 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 02:01:22,826 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 02:01:22,827 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 02:01:22,839 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 02:01:22,839 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 02:01:22,840 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 02:01:22,842 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 02:01:22,842 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 02:01:22,845 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-15 02:01:22,845 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 02:01:22,846 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 02:01:22,846 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 02:01:22,847 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 02:01:22,848 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 02:01:22,849 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 02:01:22,849 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 02:01:22,850 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 02:01:22,850 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 02:01:22,851 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 02:01:22,852 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 02:01:22,853 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 [2020-10-15 02:01:22,901 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 02:01:22,902 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 02:01:22,904 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 02:01:22,904 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 02:01:22,904 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 02:01:22,904 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 02:01:22,905 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 02:01:22,905 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 02:01:22,905 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 02:01:22,905 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 02:01:22,906 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 02:01:22,907 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 02:01:22,907 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 02:01:22,907 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 02:01:22,907 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 02:01:22,908 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 02:01:22,908 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 02:01:22,908 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 02:01:22,908 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 02:01:22,908 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 02:01:22,908 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 02:01:22,909 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 02:01:22,909 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 02:01:22,909 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 02:01:22,909 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 02:01:22,910 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 02:01:22,910 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 02:01:22,910 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 02:01:22,910 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 02:01:22,910 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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-15 02:01:23,251 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 02:01:23,264 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 02:01:23,268 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 02:01:23,270 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 02:01:23,270 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 02:01:23,271 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/recHanoi03-2.c [2020-10-15 02:01:23,335 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/20a9a7d01/b7d7d3254aac4a678774100e02259d5a/FLAGf11b67006 [2020-10-15 02:01:23,774 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 02:01:23,775 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive/recHanoi03-2.c [2020-10-15 02:01:23,781 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/20a9a7d01/b7d7d3254aac4a678774100e02259d5a/FLAGf11b67006 [2020-10-15 02:01:24,175 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/20a9a7d01/b7d7d3254aac4a678774100e02259d5a [2020-10-15 02:01:24,184 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 02:01:24,185 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-15 02:01:24,186 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 02:01:24,187 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 02:01:24,190 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 02:01:24,191 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 02:01:24" (1/1) ... [2020-10-15 02:01:24,194 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27030054 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:01:24, skipping insertion in model container [2020-10-15 02:01:24,194 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 02:01:24" (1/1) ... [2020-10-15 02:01:24,201 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 02:01:24,217 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 02:01:24,374 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 02:01:24,378 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 02:01:24,391 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 02:01:24,402 INFO L208 MainTranslator]: Completed translation [2020-10-15 02:01:24,402 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:01:24 WrapperNode [2020-10-15 02:01:24,402 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 02:01:24,403 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 02:01:24,403 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 02:01:24,403 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 02:01:24,412 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:01:24" (1/1) ... [2020-10-15 02:01:24,413 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:01:24" (1/1) ... [2020-10-15 02:01:24,498 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:01:24" (1/1) ... [2020-10-15 02:01:24,499 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:01:24" (1/1) ... [2020-10-15 02:01:24,502 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:01:24" (1/1) ... [2020-10-15 02:01:24,504 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:01:24" (1/1) ... [2020-10-15 02:01:24,505 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:01:24" (1/1) ... [2020-10-15 02:01:24,507 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 02:01:24,507 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 02:01:24,507 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 02:01:24,507 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 02:01:24,508 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:01:24" (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 [2020-10-15 02:01:24,569 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-15 02:01:24,569 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 02:01:24,569 INFO L138 BoogieDeclarations]: Found implementation of procedure hanoi [2020-10-15 02:01:24,570 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-15 02:01:24,570 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-15 02:01:24,570 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-15 02:01:24,570 INFO L130 BoogieDeclarations]: Found specification of procedure hanoi [2020-10-15 02:01:24,570 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-15 02:01:24,570 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-15 02:01:24,571 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 02:01:24,727 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 02:01:24,727 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-15 02:01:24,731 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 02:01:24 BoogieIcfgContainer [2020-10-15 02:01:24,731 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 02:01:24,732 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 02:01:24,732 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 02:01:24,735 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 02:01:24,736 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 02:01:24" (1/3) ... [2020-10-15 02:01:24,736 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23d241ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 02:01:24, skipping insertion in model container [2020-10-15 02:01:24,737 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:01:24" (2/3) ... [2020-10-15 02:01:24,737 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23d241ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 02:01:24, skipping insertion in model container [2020-10-15 02:01:24,737 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 02:01:24" (3/3) ... [2020-10-15 02:01:24,739 INFO L109 eAbstractionObserver]: Analyzing ICFG recHanoi03-2.c [2020-10-15 02:01:24,749 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-15 02:01:24,756 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 02:01:24,769 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-15 02:01:24,792 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-15 02:01:24,792 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-15 02:01:24,793 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-15 02:01:24,793 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 02:01:24,793 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 02:01:24,793 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-15 02:01:24,793 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 02:01:24,793 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 02:01:24,808 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2020-10-15 02:01:24,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-15 02:01:24,813 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:01:24,814 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:01:24,815 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:01:24,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:01:24,820 INFO L82 PathProgramCache]: Analyzing trace with hash 913793727, now seen corresponding path program 1 times [2020-10-15 02:01:24,826 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:01:24,827 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [904812883] [2020-10-15 02:01:24,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:01:24,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:01:24,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:01:25,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:01:25,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-15 02:01:25,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:01:25,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 167 [2020-10-15 02:01:25,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:01:25,100 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:01:25,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 02:01:25,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-15 02:01:25,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-15 02:01:25,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-15 02:01:25,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:01:25,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:01:25,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:01:25,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:01:25,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 02:01:25,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:01:25,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 02:01:25,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:01:25,164 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:01:25,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:01:25,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:01:25,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:01:25,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:01:25,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 02:01:25,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:01:25,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:01:25,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:01:25,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 02:01:25,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:01:25,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-15 02:01:25,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:01:25,199 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:01:25,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 02:01:25,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:01:25,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-15 02:01:25,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:01:25,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 02:01:25,424 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [904812883] [2020-10-15 02:01:25,427 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 02:01:25,427 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 02:01:25,429 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14961460] [2020-10-15 02:01:25,435 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 02:01:25,436 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:01:25,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 02:01:25,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 02:01:25,453 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 6 states. [2020-10-15 02:01:25,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:01:25,577 INFO L93 Difference]: Finished difference Result 33 states and 37 transitions. [2020-10-15 02:01:25,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 02:01:25,579 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-10-15 02:01:25,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:01:25,589 INFO L225 Difference]: With dead ends: 33 [2020-10-15 02:01:25,590 INFO L226 Difference]: Without dead ends: 19 [2020-10-15 02:01:25,593 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-15 02:01:25,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-10-15 02:01:25,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2020-10-15 02:01:25,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-10-15 02:01:25,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2020-10-15 02:01:25,633 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 14 [2020-10-15 02:01:25,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:01:25,633 INFO L479 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2020-10-15 02:01:25,633 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 02:01:25,634 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2020-10-15 02:01:25,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-15 02:01:25,636 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:01:25,636 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:01:25,636 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 02:01:25,637 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:01:25,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:01:25,637 INFO L82 PathProgramCache]: Analyzing trace with hash -1998834103, now seen corresponding path program 1 times [2020-10-15 02:01:25,637 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:01:25,638 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1539282129] [2020-10-15 02:01:25,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:01:25,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:01:25,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:01:25,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:01:25,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-15 02:01:25,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:01:25,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 242 [2020-10-15 02:01:25,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:01:25,898 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:01:25,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-15 02:01:25,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-15 02:01:25,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-15 02:01:25,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-15 02:01:25,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:01:25,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:01:25,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:01:25,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:01:25,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 02:01:25,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:01:25,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 02:01:25,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:01:25,945 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:01:25,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:01:25,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:01:25,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:01:25,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:01:25,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 02:01:25,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:01:25,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:01:26,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:01:26,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-15 02:01:26,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:01:26,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-15 02:01:26,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:01:26,074 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:01:26,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-15 02:01:26,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:01:26,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-15 02:01:26,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:01:26,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-15 02:01:26,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:01:26,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:01:26,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:01:26,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 02:01:26,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:01:26,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-15 02:01:26,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:01:26,144 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:01:26,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 02:01:26,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:01:26,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-15 02:01:26,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:01:26,165 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 02:01:26,166 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1539282129] [2020-10-15 02:01:26,166 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:01:26,167 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-15 02:01:26,167 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801513545] [2020-10-15 02:01:26,169 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 02:01:26,169 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:01:26,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 02:01:26,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-15 02:01:26,170 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand 8 states. [2020-10-15 02:01:26,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:01:26,302 INFO L93 Difference]: Finished difference Result 26 states and 27 transitions. [2020-10-15 02:01:26,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-15 02:01:26,304 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 20 [2020-10-15 02:01:26,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:01:26,305 INFO L225 Difference]: With dead ends: 26 [2020-10-15 02:01:26,305 INFO L226 Difference]: Without dead ends: 22 [2020-10-15 02:01:26,307 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-10-15 02:01:26,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-10-15 02:01:26,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-10-15 02:01:26,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-10-15 02:01:26,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2020-10-15 02:01:26,324 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 20 [2020-10-15 02:01:26,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:01:26,324 INFO L479 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2020-10-15 02:01:26,325 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 02:01:26,325 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2020-10-15 02:01:26,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-15 02:01:26,326 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:01:26,328 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:01:26,328 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 02:01:26,329 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:01:26,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:01:26,329 INFO L82 PathProgramCache]: Analyzing trace with hash 293522751, now seen corresponding path program 2 times [2020-10-15 02:01:26,329 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:01:26,330 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [217428131] [2020-10-15 02:01:26,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:01:26,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:01:26,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:01:26,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:01:26,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-15 02:01:26,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:01:26,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 188 [2020-10-15 02:01:26,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:01:26,536 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:01:26,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-15 02:01:26,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-15 02:01:26,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-15 02:01:26,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:01:26,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:01:26,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:01:26,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:01:26,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:01:26,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 02:01:26,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:01:26,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 02:01:26,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:01:26,568 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:01:26,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:01:26,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:01:26,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:01:26,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:01:26,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 02:01:26,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:01:26,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:01:26,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:01:26,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-15 02:01:26,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:01:26,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-15 02:01:26,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:01:26,705 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:01:26,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-15 02:01:26,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:01:26,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-15 02:01:26,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:01:26,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-15 02:01:26,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:01:26,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:01:26,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:01:26,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-15 02:01:26,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:01:26,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-15 02:01:26,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:01:26,800 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:01:26,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-15 02:01:26,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:01:26,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-15 02:01:26,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:01:26,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-15 02:01:26,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:01:26,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:01:26,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:01:26,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 02:01:26,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:01:26,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-15 02:01:26,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:01:26,847 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:01:26,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 02:01:26,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:01:26,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-15 02:01:26,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:01:26,884 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-15 02:01:26,885 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [217428131] [2020-10-15 02:01:26,885 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:01:26,885 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-15 02:01:26,885 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967274364] [2020-10-15 02:01:26,886 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-15 02:01:26,886 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:01:26,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-15 02:01:26,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-10-15 02:01:26,887 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand 11 states. [2020-10-15 02:01:27,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:01:27,052 INFO L93 Difference]: Finished difference Result 29 states and 30 transitions. [2020-10-15 02:01:27,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-15 02:01:27,052 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 26 [2020-10-15 02:01:27,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:01:27,054 INFO L225 Difference]: With dead ends: 29 [2020-10-15 02:01:27,054 INFO L226 Difference]: Without dead ends: 25 [2020-10-15 02:01:27,055 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2020-10-15 02:01:27,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-10-15 02:01:27,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2020-10-15 02:01:27,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-10-15 02:01:27,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2020-10-15 02:01:27,063 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 26 [2020-10-15 02:01:27,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:01:27,063 INFO L479 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2020-10-15 02:01:27,064 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-15 02:01:27,064 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2020-10-15 02:01:27,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-15 02:01:27,065 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:01:27,065 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:01:27,066 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 02:01:27,066 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:01:27,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:01:27,067 INFO L82 PathProgramCache]: Analyzing trace with hash -547108535, now seen corresponding path program 3 times [2020-10-15 02:01:27,067 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:01:27,067 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1421430032] [2020-10-15 02:01:27,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:01:27,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:01:27,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:01:27,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:01:27,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-15 02:01:27,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:01:27,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 206 [2020-10-15 02:01:27,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:01:27,287 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:01:27,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-15 02:01:27,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-15 02:01:27,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-15 02:01:27,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:01:27,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:01:27,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:01:27,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:01:27,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:01:27,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 02:01:27,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:01:27,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 02:01:27,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:01:27,316 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:01:27,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:01:27,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:01:27,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:01:27,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:01:27,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 02:01:27,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:01:27,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:01:27,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:01:27,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-15 02:01:27,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:01:27,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 200 [2020-10-15 02:01:27,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:01:27,530 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:01:27,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-15 02:01:27,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:01:27,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-15 02:01:27,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:01:27,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-15 02:01:27,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:01:27,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:01:27,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:01:27,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-15 02:01:27,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:01:27,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-10-15 02:01:27,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:01:27,743 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:01:27,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-15 02:01:27,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:01:27,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-15 02:01:27,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:01:27,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-15 02:01:27,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:01:27,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:01:27,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:01:27,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-15 02:01:27,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:01:27,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-15 02:01:27,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:01:27,835 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:01:27,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-15 02:01:27,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:01:27,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-15 02:01:27,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:01:27,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-15 02:01:27,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:01:27,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:01:27,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:01:27,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 02:01:27,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:01:27,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-15 02:01:27,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:01:27,883 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:01:27,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 02:01:27,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:01:27,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-15 02:01:27,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-15 02:01:27,918 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-15 02:01:27,919 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1421430032] [2020-10-15 02:01:27,919 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:01:27,920 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-15 02:01:27,920 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094786935] [2020-10-15 02:01:27,921 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-15 02:01:27,922 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:01:27,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-15 02:01:27,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2020-10-15 02:01:27,924 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand 12 states. [2020-10-15 02:01:28,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:01:28,134 INFO L93 Difference]: Finished difference Result 32 states and 33 transitions. [2020-10-15 02:01:28,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-15 02:01:28,135 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 32 [2020-10-15 02:01:28,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:01:28,136 INFO L225 Difference]: With dead ends: 32 [2020-10-15 02:01:28,136 INFO L226 Difference]: Without dead ends: 28 [2020-10-15 02:01:28,138 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2020-10-15 02:01:28,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-10-15 02:01:28,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-10-15 02:01:28,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-15 02:01:28,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2020-10-15 02:01:28,150 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 32 [2020-10-15 02:01:28,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:01:28,151 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2020-10-15 02:01:28,151 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-15 02:01:28,151 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2020-10-15 02:01:28,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-15 02:01:28,153 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:01:28,153 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:01:28,154 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 02:01:28,154 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:01:28,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:01:28,154 INFO L82 PathProgramCache]: Analyzing trace with hash -1152432193, now seen corresponding path program 4 times [2020-10-15 02:01:28,155 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:01:28,155 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1375586649] [2020-10-15 02:01:28,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:01:28,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:01:28,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:01:28,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:01:28,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:01:28,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-15 02:01:28,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:01:28,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 456 [2020-10-15 02:01:28,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:01:28,631 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:01:28,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-15 02:01:28,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 02:01:28,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-15 02:01:28,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:01:28,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:01:28,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:01:28,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:01:28,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:01:28,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 02:01:28,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:01:28,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 02:01:28,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:01:28,655 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:01:28,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:01:28,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:01:28,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:01:28,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:01:28,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 02:01:28,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:01:28,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:01:28,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:01:28,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:01:28,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-15 02:01:28,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:01:28,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 268 [2020-10-15 02:01:28,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:01:28,935 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:01:28,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-15 02:01:28,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:01:28,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-15 02:01:28,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:01:28,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-15 02:01:28,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:01:28,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:01:29,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:01:29,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-15 02:01:29,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:01:29,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-15 02:01:29,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:01:29,044 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:01:29,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-15 02:01:29,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:01:29,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-15 02:01:29,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:01:29,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-15 02:01:29,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:01:29,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:01:29,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:01:29,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-15 02:01:29,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:01:29,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-15 02:01:29,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:01:29,116 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:01:29,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 02:01:29,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:01:29,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-15 02:01:29,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:01:29,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-15 02:01:29,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:01:29,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:01:29,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:01:29,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-15 02:01:29,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:01:29,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-15 02:01:29,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:01:29,169 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:01:29,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 02:01:29,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:01:29,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-15 02:01:29,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:01:29,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-15 02:01:29,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:01:29,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:01:29,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:01:29,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 02:01:29,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:01:29,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 02:01:29,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:01:29,210 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:01:29,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 02:01:29,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:01:29,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-15 02:01:29,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:01:29,231 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-10-15 02:01:29,232 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1375586649] [2020-10-15 02:01:29,232 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 02:01:29,232 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-15 02:01:29,233 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819154844] [2020-10-15 02:01:29,233 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-15 02:01:29,233 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:01:29,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-15 02:01:29,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2020-10-15 02:01:29,234 INFO L87 Difference]: Start difference. First operand 28 states and 29 transitions. Second operand 14 states. [2020-10-15 02:01:29,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:01:29,315 INFO L93 Difference]: Finished difference Result 28 states and 29 transitions. [2020-10-15 02:01:29,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-15 02:01:29,315 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 38 [2020-10-15 02:01:29,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:01:29,316 INFO L225 Difference]: With dead ends: 28 [2020-10-15 02:01:29,316 INFO L226 Difference]: Without dead ends: 0 [2020-10-15 02:01:29,317 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2020-10-15 02:01:29,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-15 02:01:29,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-15 02:01:29,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-15 02:01:29,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-15 02:01:29,318 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 38 [2020-10-15 02:01:29,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:01:29,318 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-15 02:01:29,318 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-15 02:01:29,319 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-15 02:01:29,319 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-15 02:01:29,319 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 02:01:29,322 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-15 02:01:29,349 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-10-15 02:01:29,350 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-15 02:01:29,350 INFO L268 CegarLoopResult]: For program point L17(lines 17 19) no Hoare annotation was computed. [2020-10-15 02:01:29,350 INFO L268 CegarLoopResult]: For program point hanoiEXIT(lines 16 21) no Hoare annotation was computed. [2020-10-15 02:01:29,350 INFO L271 CegarLoopResult]: At program point hanoiENTRY(lines 16 21) the Hoare annotation is: true [2020-10-15 02:01:29,350 INFO L268 CegarLoopResult]: For program point hanoiFINAL(lines 16 21) no Hoare annotation was computed. [2020-10-15 02:01:29,351 INFO L264 CegarLoopResult]: At program point L20(line 20) the Hoare annotation is: (= hanoi_~n |hanoi_#in~n|) [2020-10-15 02:01:29,351 INFO L268 CegarLoopResult]: For program point L20-1(line 20) no Hoare annotation was computed. [2020-10-15 02:01:29,351 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-15 02:01:29,351 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-15 02:01:29,351 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-15 02:01:29,351 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-15 02:01:29,352 INFO L268 CegarLoopResult]: For program point L33(line 33) no Hoare annotation was computed. [2020-10-15 02:01:29,352 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 33) no Hoare annotation was computed. [2020-10-15 02:01:29,352 INFO L268 CegarLoopResult]: For program point L30(lines 30 34) no Hoare annotation was computed. [2020-10-15 02:01:29,352 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 24 35) the Hoare annotation is: true [2020-10-15 02:01:29,352 INFO L264 CegarLoopResult]: At program point L29(line 29) the Hoare annotation is: (<= main_~n~0 31) [2020-10-15 02:01:29,352 INFO L268 CegarLoopResult]: For program point L29-1(line 29) no Hoare annotation was computed. [2020-10-15 02:01:29,352 INFO L268 CegarLoopResult]: For program point L26(lines 26 28) no Hoare annotation was computed. [2020-10-15 02:01:29,353 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 24 35) no Hoare annotation was computed. [2020-10-15 02:01:29,353 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 24 35) no Hoare annotation was computed. [2020-10-15 02:01:29,362 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 02:01:29 BoogieIcfgContainer [2020-10-15 02:01:29,362 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-15 02:01:29,369 INFO L168 Benchmark]: Toolchain (without parser) took 5178.88 ms. Allocated memory was 145.2 MB in the beginning and 287.3 MB in the end (delta: 142.1 MB). Free memory was 100.4 MB in the beginning and 169.8 MB in the end (delta: -69.4 MB). Peak memory consumption was 72.7 MB. Max. memory is 7.1 GB. [2020-10-15 02:01:29,369 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 145.2 MB. Free memory was 118.5 MB in the beginning and 118.1 MB in the end (delta: 419.6 kB). Peak memory consumption was 419.6 kB. Max. memory is 7.1 GB. [2020-10-15 02:01:29,370 INFO L168 Benchmark]: CACSL2BoogieTranslator took 216.18 ms. Allocated memory is still 145.2 MB. Free memory was 100.0 MB in the beginning and 90.6 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. [2020-10-15 02:01:29,371 INFO L168 Benchmark]: Boogie Preprocessor took 103.78 ms. Allocated memory was 145.2 MB in the beginning and 201.3 MB in the end (delta: 56.1 MB). Free memory was 90.2 MB in the beginning and 179.9 MB in the end (delta: -89.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. [2020-10-15 02:01:29,371 INFO L168 Benchmark]: RCFGBuilder took 224.06 ms. Allocated memory is still 201.3 MB. Free memory was 179.9 MB in the beginning and 168.3 MB in the end (delta: 11.7 MB). Peak memory consumption was 11.7 MB. Max. memory is 7.1 GB. [2020-10-15 02:01:29,372 INFO L168 Benchmark]: TraceAbstraction took 4629.96 ms. Allocated memory was 201.3 MB in the beginning and 287.3 MB in the end (delta: 86.0 MB). Free memory was 167.3 MB in the beginning and 169.8 MB in the end (delta: -2.5 MB). Peak memory consumption was 83.5 MB. Max. memory is 7.1 GB. [2020-10-15 02:01:29,385 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 145.2 MB. Free memory was 118.5 MB in the beginning and 118.1 MB in the end (delta: 419.6 kB). Peak memory consumption was 419.6 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 216.18 ms. Allocated memory is still 145.2 MB. Free memory was 100.0 MB in the beginning and 90.6 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 103.78 ms. Allocated memory was 145.2 MB in the beginning and 201.3 MB in the end (delta: 56.1 MB). Free memory was 90.2 MB in the beginning and 179.9 MB in the end (delta: -89.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 224.06 ms. Allocated memory is still 201.3 MB. Free memory was 179.9 MB in the beginning and 168.3 MB in the end (delta: 11.7 MB). Peak memory consumption was 11.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4629.96 ms. Allocated memory was 201.3 MB in the beginning and 287.3 MB in the end (delta: 86.0 MB). Free memory was 167.3 MB in the beginning and 169.8 MB in the end (delta: -2.5 MB). Peak memory consumption was 83.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 33]: 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 4 procedures, 21 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.5s, OverallIterations: 5, TraceHistogramMax: 5, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 83 SDtfs, 26 SDslu, 489 SDs, 0 SdLazy, 394 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 104 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred in iteration=4, 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, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 9 PreInvPairs, 9 NumberOfFragments, 11 HoareAnnotationTreeSize, 9 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 4 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 3.4s InterpolantComputationTime, 130 NumberOfCodeBlocks, 130 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 125 ConstructedInterpolants, 0 QuantifiedInterpolants, 9749 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 2 PerfectInterpolantSequences, 74/100 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...