/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --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 [2020-10-14 07:26:35,110 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 07:26:35,113 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 07:26:35,137 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 07:26:35,138 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 07:26:35,139 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 07:26:35,140 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 07:26:35,142 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 07:26:35,143 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 07:26:35,144 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 07:26:35,145 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 07:26:35,146 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 07:26:35,147 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 07:26:35,148 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 07:26:35,149 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 07:26:35,150 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 07:26:35,150 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 07:26:35,151 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 07:26:35,153 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 07:26:35,155 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 07:26:35,156 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 07:26:35,157 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 07:26:35,158 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 07:26:35,159 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 07:26:35,161 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 07:26:35,162 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 07:26:35,162 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 07:26:35,163 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 07:26:35,163 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 07:26:35,164 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 07:26:35,164 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 07:26:35,165 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 07:26:35,166 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 07:26:35,167 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 07:26:35,168 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 07:26:35,168 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 07:26:35,168 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 07:26:35,169 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 07:26:35,169 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 07:26:35,170 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 07:26:35,170 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 07:26:35,171 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 [2020-10-14 07:26:35,194 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 07:26:35,195 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 07:26:35,196 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 07:26:35,196 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 07:26:35,196 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 07:26:35,196 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 07:26:35,197 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 07:26:35,197 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 07:26:35,197 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 07:26:35,197 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 07:26:35,198 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 07:26:35,198 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 07:26:35,198 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 07:26:35,198 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 07:26:35,198 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 07:26:35,198 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 07:26:35,199 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 07:26:35,199 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 07:26:35,199 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 07:26:35,199 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 07:26:35,200 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 07:26:35,200 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 07:26:35,200 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 07:26:35,200 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 07:26:35,200 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 07:26:35,201 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 07:26:35,201 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 07:26:35,201 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 07:26:35,201 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 07:26:35,201 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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 07:26:35,505 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 07:26:35,517 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 07:26:35,520 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 07:26:35,522 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 07:26:35,522 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 07:26:35,523 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/recHanoi03-2.c [2020-10-14 07:26:35,584 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2c1a9e04c/7542a4d0086d4cddbdbf749dae6c47da/FLAGf8de75065 [2020-10-14 07:26:36,023 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 07:26:36,023 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive/recHanoi03-2.c [2020-10-14 07:26:36,030 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2c1a9e04c/7542a4d0086d4cddbdbf749dae6c47da/FLAGf8de75065 [2020-10-14 07:26:36,448 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2c1a9e04c/7542a4d0086d4cddbdbf749dae6c47da [2020-10-14 07:26:36,458 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 07:26:36,460 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 07:26:36,461 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 07:26:36,461 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 07:26:36,465 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 07:26:36,466 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:26:36" (1/1) ... [2020-10-14 07:26:36,469 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5db1276a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:26:36, skipping insertion in model container [2020-10-14 07:26:36,469 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:26:36" (1/1) ... [2020-10-14 07:26:36,477 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 07:26:36,493 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 07:26:36,678 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 07:26:36,682 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 07:26:36,698 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 07:26:36,712 INFO L208 MainTranslator]: Completed translation [2020-10-14 07:26:36,713 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:26:36 WrapperNode [2020-10-14 07:26:36,713 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 07:26:36,713 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 07:26:36,714 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 07:26:36,714 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 07:26:36,727 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:26:36" (1/1) ... [2020-10-14 07:26:36,727 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:26:36" (1/1) ... [2020-10-14 07:26:36,811 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:26:36" (1/1) ... [2020-10-14 07:26:36,811 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:26:36" (1/1) ... [2020-10-14 07:26:36,817 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:26:36" (1/1) ... [2020-10-14 07:26:36,820 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:26:36" (1/1) ... [2020-10-14 07:26:36,822 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:26:36" (1/1) ... [2020-10-14 07:26:36,823 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 07:26:36,823 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 07:26:36,824 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 07:26:36,824 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 07:26:36,825 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:26:36" (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 [2020-10-14 07:26:36,877 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 07:26:36,877 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 07:26:36,877 INFO L138 BoogieDeclarations]: Found implementation of procedure hanoi [2020-10-14 07:26:36,878 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 07:26:36,878 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 07:26:36,878 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 07:26:36,878 INFO L130 BoogieDeclarations]: Found specification of procedure hanoi [2020-10-14 07:26:36,878 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 07:26:36,878 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 07:26:36,878 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 07:26:37,061 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 07:26:37,061 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-14 07:26:37,065 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:26:37 BoogieIcfgContainer [2020-10-14 07:26:37,065 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 07:26:37,067 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 07:26:37,067 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 07:26:37,070 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 07:26:37,070 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 07:26:36" (1/3) ... [2020-10-14 07:26:37,071 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d3504a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:26:37, skipping insertion in model container [2020-10-14 07:26:37,071 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:26:36" (2/3) ... [2020-10-14 07:26:37,071 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d3504a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:26:37, skipping insertion in model container [2020-10-14 07:26:37,072 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:26:37" (3/3) ... [2020-10-14 07:26:37,073 INFO L109 eAbstractionObserver]: Analyzing ICFG recHanoi03-2.c [2020-10-14 07:26:37,083 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 07:26:37,091 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 07:26:37,104 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 07:26:37,128 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 07:26:37,128 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 07:26:37,128 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 07:26:37,128 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 07:26:37,129 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 07:26:37,129 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 07:26:37,129 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 07:26:37,129 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 07:26:37,147 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2020-10-14 07:26:37,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-14 07:26:37,153 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:26:37,153 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:26:37,154 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:26:37,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:26:37,158 INFO L82 PathProgramCache]: Analyzing trace with hash 913793727, now seen corresponding path program 1 times [2020-10-14 07:26:37,165 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:26:37,166 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1024784406] [2020-10-14 07:26:37,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:26:37,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:26:37,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:26:37,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:26:37,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 07:26:37,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:26:37,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-10-14 07:26:37,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:26:37,423 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:26:37,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 07:26:37,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 07:26:37,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 07:26:37,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 07:26:37,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:26:37,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:26:37,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:26:37,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:26:37,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 07:26:37,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:26:37,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 07:26:37,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:26:37,493 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:26:37,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:26:37,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:26:37,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:26:37,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:26:37,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 07:26:37,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:26:37,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:26:37,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:26:37,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 07:26:37,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:26:37,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 07:26:37,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:26:37,525 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:26:37,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 07:26:37,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:26:37,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 07:26:37,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:26:37,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 07:26:37,664 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1024784406] [2020-10-14 07:26:37,667 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 07:26:37,668 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 07:26:37,669 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377724391] [2020-10-14 07:26:37,675 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 07:26:37,676 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:26:37,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 07:26:37,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 07:26:37,693 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 6 states. [2020-10-14 07:26:37,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:26:37,796 INFO L93 Difference]: Finished difference Result 33 states and 37 transitions. [2020-10-14 07:26:37,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 07:26:37,798 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-10-14 07:26:37,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:26:37,809 INFO L225 Difference]: With dead ends: 33 [2020-10-14 07:26:37,809 INFO L226 Difference]: Without dead ends: 19 [2020-10-14 07:26:37,813 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-14 07:26:37,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-10-14 07:26:37,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2020-10-14 07:26:37,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-10-14 07:26:37,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2020-10-14 07:26:37,854 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 14 [2020-10-14 07:26:37,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:26:37,854 INFO L479 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2020-10-14 07:26:37,855 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 07:26:37,855 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2020-10-14 07:26:37,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-14 07:26:37,857 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:26:37,857 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:26:37,858 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 07:26:37,858 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:26:37,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:26:37,859 INFO L82 PathProgramCache]: Analyzing trace with hash -1998834103, now seen corresponding path program 1 times [2020-10-14 07:26:37,859 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:26:37,859 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1285788938] [2020-10-14 07:26:37,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:26:37,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:26:37,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:26:38,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:26:38,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-14 07:26:38,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:26:38,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 239 [2020-10-14 07:26:38,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:26:38,118 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:26:38,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 07:26:38,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 07:26:38,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 07:26:38,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:26:38,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:26:38,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:26:38,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:26:38,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:26:38,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 07:26:38,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:26:38,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 07:26:38,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:26:38,177 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:26:38,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:26:38,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:26:38,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:26:38,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:26:38,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 07:26:38,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:26:38,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:26:38,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:26:38,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 07:26:38,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:26:38,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-14 07:26:38,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:26:38,256 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:26:38,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 07:26:38,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:26:38,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 07:26:38,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:26:38,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-14 07:26:38,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:26:38,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:26:38,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:26:38,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 07:26:38,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:26:38,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 07:26:38,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:26:38,313 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:26:38,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 07:26:38,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:26:38,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 07:26:38,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:26:38,335 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-14 07:26:38,336 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1285788938] [2020-10-14 07:26:38,336 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:26:38,336 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 07:26:38,336 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639164382] [2020-10-14 07:26:38,338 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 07:26:38,339 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:26:38,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 07:26:38,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-14 07:26:38,340 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand 8 states. [2020-10-14 07:26:38,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:26:38,460 INFO L93 Difference]: Finished difference Result 26 states and 27 transitions. [2020-10-14 07:26:38,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 07:26:38,461 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 20 [2020-10-14 07:26:38,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:26:38,462 INFO L225 Difference]: With dead ends: 26 [2020-10-14 07:26:38,463 INFO L226 Difference]: Without dead ends: 22 [2020-10-14 07:26:38,464 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 [2020-10-14 07:26:38,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-10-14 07:26:38,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-10-14 07:26:38,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-10-14 07:26:38,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2020-10-14 07:26:38,471 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 20 [2020-10-14 07:26:38,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:26:38,471 INFO L479 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2020-10-14 07:26:38,471 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 07:26:38,471 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2020-10-14 07:26:38,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-14 07:26:38,473 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:26:38,473 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:26:38,473 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 07:26:38,473 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:26:38,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:26:38,474 INFO L82 PathProgramCache]: Analyzing trace with hash 293522751, now seen corresponding path program 2 times [2020-10-14 07:26:38,474 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:26:38,474 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [357773643] [2020-10-14 07:26:38,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:26:38,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:26:38,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:26:38,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:26:38,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-14 07:26:38,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:26:38,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 185 [2020-10-14 07:26:38,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:26:38,672 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:26:38,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 07:26:38,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 07:26:38,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-14 07:26:38,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 07:26:38,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:26:38,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:26:38,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:26:38,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:26:38,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 07:26:38,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:26:38,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:26:38,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:26:38,708 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:26:38,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:26:38,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:26:38,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:26:38,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:26:38,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 07:26:38,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:26:38,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:26:38,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:26:38,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 07:26:38,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:26:38,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-14 07:26:38,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:26:38,845 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:26:38,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 07:26:38,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:26:38,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 07:26:38,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:26:38,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-14 07:26:38,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:26:38,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:26:38,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:26:38,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 07:26:38,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:26:38,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-14 07:26:38,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:26:38,931 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:26:38,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 07:26:38,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:26:38,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 07:26:38,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:26:38,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-14 07:26:38,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:26:38,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:26:38,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:26:38,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 07:26:38,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:26:38,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 07:26:38,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:26:38,976 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:26:38,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 07:26:38,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:26:38,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 07:26:38,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:26:39,015 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-14 07:26:39,016 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [357773643] [2020-10-14 07:26:39,016 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:26:39,016 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 07:26:39,017 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422539735] [2020-10-14 07:26:39,017 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 07:26:39,017 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:26:39,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 07:26:39,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-10-14 07:26:39,018 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand 11 states. [2020-10-14 07:26:39,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:26:39,225 INFO L93 Difference]: Finished difference Result 29 states and 30 transitions. [2020-10-14 07:26:39,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 07:26:39,226 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 26 [2020-10-14 07:26:39,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:26:39,227 INFO L225 Difference]: With dead ends: 29 [2020-10-14 07:26:39,228 INFO L226 Difference]: Without dead ends: 25 [2020-10-14 07:26:39,229 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 [2020-10-14 07:26:39,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-10-14 07:26:39,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2020-10-14 07:26:39,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-10-14 07:26:39,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2020-10-14 07:26:39,236 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 26 [2020-10-14 07:26:39,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:26:39,237 INFO L479 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2020-10-14 07:26:39,237 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 07:26:39,238 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2020-10-14 07:26:39,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-14 07:26:39,239 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:26:39,240 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:26:39,240 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 07:26:39,240 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:26:39,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:26:39,241 INFO L82 PathProgramCache]: Analyzing trace with hash -547108535, now seen corresponding path program 3 times [2020-10-14 07:26:39,242 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:26:39,242 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [9648634] [2020-10-14 07:26:39,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:26:39,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:26:39,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:26:39,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:26:39,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-14 07:26:39,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:26:39,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 196 [2020-10-14 07:26:39,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:26:39,452 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:26:39,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-14 07:26:39,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 07:26:39,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-14 07:26:39,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:26:39,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:26:39,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:26:39,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:26:39,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:26:39,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 07:26:39,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:26:39,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:26:39,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:26:39,478 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:26:39,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:26:39,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:26:39,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:26:39,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:26:39,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 07:26:39,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:26:39,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:26:39,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:26:39,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-14 07:26:39,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:26:39,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-14 07:26:39,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:26:39,597 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:26:39,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-14 07:26:39,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:26:39,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-14 07:26:39,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:26:39,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-14 07:26:39,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:26:39,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:26:39,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:26:39,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 07:26:39,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:26:39,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-14 07:26:39,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:26:39,706 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:26:39,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 07:26:39,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:26:39,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 07:26:39,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:26:39,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-14 07:26:39,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:26:39,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:26:39,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:26:39,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 07:26:39,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:26:39,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-14 07:26:39,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:26:39,776 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:26:39,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 07:26:39,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:26:39,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 07:26:39,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:26:39,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-14 07:26:39,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:26:39,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:26:39,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:26:39,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 07:26:39,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:26:39,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 07:26:39,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:26:39,820 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:26:39,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 07:26:39,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:26:39,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 07:26:39,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:26:39,846 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-14 07:26:39,847 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [9648634] [2020-10-14 07:26:39,847 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:26:39,847 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 07:26:39,848 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114811904] [2020-10-14 07:26:39,848 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 07:26:39,848 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:26:39,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 07:26:39,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2020-10-14 07:26:39,849 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand 12 states. [2020-10-14 07:26:40,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:26:40,070 INFO L93 Difference]: Finished difference Result 32 states and 33 transitions. [2020-10-14 07:26:40,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 07:26:40,071 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 32 [2020-10-14 07:26:40,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:26:40,072 INFO L225 Difference]: With dead ends: 32 [2020-10-14 07:26:40,072 INFO L226 Difference]: Without dead ends: 28 [2020-10-14 07:26:40,073 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 [2020-10-14 07:26:40,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-10-14 07:26:40,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-10-14 07:26:40,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-14 07:26:40,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2020-10-14 07:26:40,080 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 32 [2020-10-14 07:26:40,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:26:40,080 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2020-10-14 07:26:40,080 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 07:26:40,080 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2020-10-14 07:26:40,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-14 07:26:40,081 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:26:40,082 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:26:40,082 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 07:26:40,082 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:26:40,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:26:40,083 INFO L82 PathProgramCache]: Analyzing trace with hash -1152432193, now seen corresponding path program 4 times [2020-10-14 07:26:40,083 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:26:40,083 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [894315320] [2020-10-14 07:26:40,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:26:40,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:26:40,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:26:40,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:26:40,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:26:40,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-14 07:26:40,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:26:40,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 389 [2020-10-14 07:26:40,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:26:40,487 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:26:40,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 07:26:40,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 07:26:40,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-14 07:26:40,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:26:40,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:26:40,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:26:40,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:26:40,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:26:40,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 07:26:40,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:26:40,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:26:40,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:26:40,513 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:26:40,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:26:40,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:26:40,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:26:40,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:26:40,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 07:26:40,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:26:40,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:26:40,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:26:40,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:26:40,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-14 07:26:40,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:26:40,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 254 [2020-10-14 07:26:40,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:26:40,778 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:26:40,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 07:26:40,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:26:40,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-14 07:26:40,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:26:40,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-14 07:26:40,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:26:40,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:26:40,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:26:40,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-14 07:26:40,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:26:40,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-14 07:26:40,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:26:40,868 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:26:40,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 07:26:40,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:26:40,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-14 07:26:40,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:26:40,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-14 07:26:40,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:26:40,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:26:40,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:26:40,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 07:26:40,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:26:40,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-14 07:26:40,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:26:40,936 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:26:40,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 07:26:40,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:26:40,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 07:26:40,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:26:40,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-14 07:26:40,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:26:40,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:26:40,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:26:40,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 07:26:40,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:26:40,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 07:26:40,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:26:40,987 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:26:40,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 07:26:40,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:26:40,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 07:26:40,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:26:41,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-14 07:26:41,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:26:41,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:26:41,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:26:41,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 07:26:41,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:26:41,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 07:26:41,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:26:41,027 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:26:41,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 07:26:41,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:26:41,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 07:26:41,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:26:41,050 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-10-14 07:26:41,050 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [894315320] [2020-10-14 07:26:41,050 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 07:26:41,051 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-14 07:26:41,051 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626051211] [2020-10-14 07:26:41,051 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 07:26:41,052 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:26:41,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 07:26:41,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2020-10-14 07:26:41,053 INFO L87 Difference]: Start difference. First operand 28 states and 29 transitions. Second operand 14 states. [2020-10-14 07:26:41,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:26:41,135 INFO L93 Difference]: Finished difference Result 28 states and 29 transitions. [2020-10-14 07:26:41,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 07:26:41,135 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 38 [2020-10-14 07:26:41,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:26:41,136 INFO L225 Difference]: With dead ends: 28 [2020-10-14 07:26:41,136 INFO L226 Difference]: Without dead ends: 0 [2020-10-14 07:26:41,137 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 [2020-10-14 07:26:41,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-14 07:26:41,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-14 07:26:41,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-14 07:26:41,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-14 07:26:41,138 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 38 [2020-10-14 07:26:41,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:26:41,138 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-14 07:26:41,139 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 07:26:41,139 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-14 07:26:41,139 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-14 07:26:41,139 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 07:26:41,142 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-14 07:26:41,171 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-10-14 07:26:41,171 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-14 07:26:41,171 INFO L268 CegarLoopResult]: For program point L17(lines 17 19) no Hoare annotation was computed. [2020-10-14 07:26:41,171 INFO L268 CegarLoopResult]: For program point hanoiEXIT(lines 16 21) no Hoare annotation was computed. [2020-10-14 07:26:41,171 INFO L271 CegarLoopResult]: At program point hanoiENTRY(lines 16 21) the Hoare annotation is: true [2020-10-14 07:26:41,171 INFO L268 CegarLoopResult]: For program point hanoiFINAL(lines 16 21) no Hoare annotation was computed. [2020-10-14 07:26:41,172 INFO L264 CegarLoopResult]: At program point L20(line 20) the Hoare annotation is: (= hanoi_~n |hanoi_#in~n|) [2020-10-14 07:26:41,172 INFO L268 CegarLoopResult]: For program point L20-1(line 20) no Hoare annotation was computed. [2020-10-14 07:26:41,172 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-14 07:26:41,172 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-14 07:26:41,172 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-14 07:26:41,172 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-14 07:26:41,172 INFO L268 CegarLoopResult]: For program point L33(line 33) no Hoare annotation was computed. [2020-10-14 07:26:41,172 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 33) no Hoare annotation was computed. [2020-10-14 07:26:41,173 INFO L268 CegarLoopResult]: For program point L30(lines 30 34) no Hoare annotation was computed. [2020-10-14 07:26:41,173 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 24 35) the Hoare annotation is: true [2020-10-14 07:26:41,173 INFO L264 CegarLoopResult]: At program point L29(line 29) the Hoare annotation is: (<= main_~n~0 31) [2020-10-14 07:26:41,173 INFO L268 CegarLoopResult]: For program point L29-1(line 29) no Hoare annotation was computed. [2020-10-14 07:26:41,173 INFO L268 CegarLoopResult]: For program point L26(lines 26 28) no Hoare annotation was computed. [2020-10-14 07:26:41,173 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 24 35) no Hoare annotation was computed. [2020-10-14 07:26:41,173 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 24 35) no Hoare annotation was computed. [2020-10-14 07:26:41,179 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 07:26:41 BoogieIcfgContainer [2020-10-14 07:26:41,179 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-14 07:26:41,182 INFO L168 Benchmark]: Toolchain (without parser) took 4721.53 ms. Allocated memory was 146.3 MB in the beginning and 279.4 MB in the end (delta: 133.2 MB). Free memory was 102.9 MB in the beginning and 138.7 MB in the end (delta: -35.8 MB). Peak memory consumption was 97.4 MB. Max. memory is 7.1 GB. [2020-10-14 07:26:41,183 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 146.3 MB. Free memory was 120.8 MB in the beginning and 120.4 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. [2020-10-14 07:26:41,184 INFO L168 Benchmark]: CACSL2BoogieTranslator took 252.08 ms. Allocated memory is still 146.3 MB. Free memory was 102.5 MB in the beginning and 93.4 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.1 MB. Max. memory is 7.1 GB. [2020-10-14 07:26:41,184 INFO L168 Benchmark]: Boogie Preprocessor took 109.68 ms. Allocated memory was 146.3 MB in the beginning and 201.9 MB in the end (delta: 55.6 MB). Free memory was 93.0 MB in the beginning and 180.3 MB in the end (delta: -87.2 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. [2020-10-14 07:26:41,185 INFO L168 Benchmark]: RCFGBuilder took 241.96 ms. Allocated memory is still 201.9 MB. Free memory was 180.3 MB in the beginning and 168.5 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 7.1 GB. [2020-10-14 07:26:41,186 INFO L168 Benchmark]: TraceAbstraction took 4112.78 ms. Allocated memory was 201.9 MB in the beginning and 279.4 MB in the end (delta: 77.6 MB). Free memory was 167.5 MB in the beginning and 138.7 MB in the end (delta: 28.8 MB). Peak memory consumption was 106.4 MB. Max. memory is 7.1 GB. [2020-10-14 07:26:41,191 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 146.3 MB. Free memory was 120.8 MB in the beginning and 120.4 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 252.08 ms. Allocated memory is still 146.3 MB. Free memory was 102.5 MB in the beginning and 93.4 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 109.68 ms. Allocated memory was 146.3 MB in the beginning and 201.9 MB in the end (delta: 55.6 MB). Free memory was 93.0 MB in the beginning and 180.3 MB in the end (delta: -87.2 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 241.96 ms. Allocated memory is still 201.9 MB. Free memory was 180.3 MB in the beginning and 168.5 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4112.78 ms. Allocated memory was 201.9 MB in the beginning and 279.4 MB in the end (delta: 77.6 MB). Free memory was 167.5 MB in the beginning and 138.7 MB in the end (delta: 28.8 MB). Peak memory consumption was 106.4 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: 4.0s, 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, 0.7s 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, 2.9s 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...