/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 --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=1000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-regression/test24-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 12:26:38,043 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 12:26:38,047 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 12:26:38,085 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 12:26:38,085 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 12:26:38,094 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 12:26:38,096 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 12:26:38,100 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 12:26:38,103 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 12:26:38,106 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 12:26:38,107 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 12:26:38,108 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 12:26:38,109 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 12:26:38,112 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 12:26:38,115 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 12:26:38,117 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 12:26:38,119 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 12:26:38,120 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 12:26:38,122 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 12:26:38,130 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 12:26:38,133 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 12:26:38,134 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 12:26:38,135 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 12:26:38,136 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 12:26:38,149 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 12:26:38,149 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 12:26:38,149 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 12:26:38,166 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 12:26:38,169 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 12:26:38,178 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 12:26:38,180 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 12:26:38,181 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 12:26:38,185 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 12:26:38,186 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 12:26:38,187 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 12:26:38,187 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 12:26:38,188 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 12:26:38,189 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 12:26:38,189 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 12:26:38,190 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 12:26:38,192 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 12:26:38,193 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-21 12:26:38,250 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 12:26:38,250 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 12:26:38,254 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 12:26:38,254 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 12:26:38,254 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 12:26:38,255 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 12:26:38,255 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 12:26:38,255 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 12:26:38,256 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 12:26:38,256 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 12:26:38,257 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 12:26:38,257 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 12:26:38,257 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 12:26:38,258 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 12:26:38,258 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 12:26:38,258 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 12:26:38,258 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 12:26:38,259 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 12:26:38,259 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 12:26:38,259 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 12:26:38,259 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 12:26:38,259 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 12:26:38,260 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 12:26:38,260 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 12:26:38,260 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 12:26:38,260 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 12:26:38,260 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 12:26:38,261 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 12:26:38,261 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 12:26:38,261 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.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=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-09-21 12:26:38,797 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 12:26:38,812 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 12:26:38,817 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 12:26:38,819 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 12:26:38,819 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 12:26:38,821 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test24-1.c [2020-09-21 12:26:38,901 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2780d3c0c/f198a4bb3abd4811ad05826ad1e322fd/FLAGc4aa33380 [2020-09-21 12:26:39,490 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 12:26:39,491 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-regression/test24-1.c [2020-09-21 12:26:39,500 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2780d3c0c/f198a4bb3abd4811ad05826ad1e322fd/FLAGc4aa33380 [2020-09-21 12:26:39,810 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2780d3c0c/f198a4bb3abd4811ad05826ad1e322fd [2020-09-21 12:26:39,823 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 12:26:39,829 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 12:26:39,830 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 12:26:39,830 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 12:26:39,834 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 12:26:39,835 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:26:39" (1/1) ... [2020-09-21 12:26:39,839 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@448d4077 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:26:39, skipping insertion in model container [2020-09-21 12:26:39,840 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:26:39" (1/1) ... [2020-09-21 12:26:39,848 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 12:26:39,875 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 12:26:40,091 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 12:26:40,104 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 12:26:40,128 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 12:26:40,147 INFO L208 MainTranslator]: Completed translation [2020-09-21 12:26:40,147 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:26:40 WrapperNode [2020-09-21 12:26:40,148 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 12:26:40,148 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 12:26:40,149 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 12:26:40,149 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 12:26:40,238 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:26:40" (1/1) ... [2020-09-21 12:26:40,238 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:26:40" (1/1) ... [2020-09-21 12:26:40,248 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:26:40" (1/1) ... [2020-09-21 12:26:40,249 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:26:40" (1/1) ... [2020-09-21 12:26:40,257 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:26:40" (1/1) ... [2020-09-21 12:26:40,263 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:26:40" (1/1) ... [2020-09-21 12:26:40,264 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:26:40" (1/1) ... [2020-09-21 12:26:40,267 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 12:26:40,267 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 12:26:40,268 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 12:26:40,268 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 12:26:40,269 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:26:40" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 12:26:40,348 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 12:26:40,348 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 12:26:40,349 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-09-21 12:26:40,349 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 12:26:40,349 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 12:26:40,349 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-21 12:26:40,349 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-09-21 12:26:40,350 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-21 12:26:40,350 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 12:26:40,350 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-21 12:26:40,350 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-21 12:26:40,350 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-21 12:26:40,351 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 12:26:40,351 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 12:26:40,638 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 12:26:40,639 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-21 12:26:40,650 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:26:40 BoogieIcfgContainer [2020-09-21 12:26:40,650 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 12:26:40,653 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 12:26:40,655 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 12:26:40,658 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 12:26:40,658 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 12:26:39" (1/3) ... [2020-09-21 12:26:40,659 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b396505 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:26:40, skipping insertion in model container [2020-09-21 12:26:40,659 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:26:40" (2/3) ... [2020-09-21 12:26:40,660 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b396505 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:26:40, skipping insertion in model container [2020-09-21 12:26:40,660 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:26:40" (3/3) ... [2020-09-21 12:26:40,663 INFO L109 eAbstractionObserver]: Analyzing ICFG test24-1.c [2020-09-21 12:26:40,675 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 12:26:40,687 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 12:26:40,710 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 12:26:40,740 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 12:26:40,740 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 12:26:40,741 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 12:26:40,741 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 12:26:40,741 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 12:26:40,741 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 12:26:40,741 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 12:26:40,741 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 12:26:40,762 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2020-09-21 12:26:40,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-21 12:26:40,768 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:26:40,769 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:26:40,770 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:26:40,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:26:40,776 INFO L82 PathProgramCache]: Analyzing trace with hash 149844724, now seen corresponding path program 1 times [2020-09-21 12:26:40,785 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:26:40,786 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [78086151] [2020-09-21 12:26:40,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:26:40,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:26:40,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:41,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:26:41,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-21 12:26:41,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:26:41,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-09-21 12:26:41,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:26:41,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:26:41,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-21 12:26:41,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:26:41,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-21 12:26:41,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:26:41,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:26:41,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:41,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:26:41,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:26:41,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:26:41,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-21 12:26:41,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:26:41,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:26:41,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:26:41,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:26:41,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:26:41,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 12:26:41,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:26:41,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:41,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:26:41,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:26:41,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:26:41,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-21 12:26:41,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:26:41,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:26:41,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:26:41,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:26:41,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:26:41,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:26:41,179 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [78086151] [2020-09-21 12:26:41,183 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:26:41,184 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 12:26:41,185 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474678707] [2020-09-21 12:26:41,194 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 12:26:41,194 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:26:41,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 12:26:41,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 12:26:41,214 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 3 states. [2020-09-21 12:26:41,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:26:41,317 INFO L93 Difference]: Finished difference Result 35 states and 38 transitions. [2020-09-21 12:26:41,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 12:26:41,320 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2020-09-21 12:26:41,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:26:41,333 INFO L225 Difference]: With dead ends: 35 [2020-09-21 12:26:41,333 INFO L226 Difference]: Without dead ends: 17 [2020-09-21 12:26:41,338 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 12:26:41,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-09-21 12:26:41,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2020-09-21 12:26:41,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-09-21 12:26:41,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2020-09-21 12:26:41,381 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 15 [2020-09-21 12:26:41,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:26:41,382 INFO L479 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2020-09-21 12:26:41,382 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 12:26:41,382 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2020-09-21 12:26:41,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-21 12:26:41,383 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:26:41,384 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:26:41,384 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 12:26:41,384 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:26:41,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:26:41,385 INFO L82 PathProgramCache]: Analyzing trace with hash -1249419983, now seen corresponding path program 1 times [2020-09-21 12:26:41,385 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:26:41,386 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1383505013] [2020-09-21 12:26:41,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:26:41,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:26:41,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:41,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:26:41,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-21 12:26:41,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:26:41,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 327 [2020-09-21 12:26:41,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:26:41,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 12:26:41,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-21 12:26:41,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-21 12:26:41,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:26:41,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:26:41,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:26:41,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:41,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:26:41,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:26:41,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:26:41,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 12:26:41,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:26:41,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:26:41,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:26:41,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:26:41,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:26:41,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 12:26:41,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:26:41,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:41,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:26:41,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:26:41,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:26:41,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-21 12:26:41,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:26:41,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:26:41,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:26:41,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:26:41,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:26:41,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:26:41,858 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1383505013] [2020-09-21 12:26:41,858 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:26:41,859 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-21 12:26:41,860 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098834735] [2020-09-21 12:26:41,865 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 12:26:41,865 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:26:41,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 12:26:41,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:26:41,866 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 5 states. [2020-09-21 12:26:41,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:26:41,965 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2020-09-21 12:26:41,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 12:26:41,966 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-21 12:26:41,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:26:41,967 INFO L225 Difference]: With dead ends: 27 [2020-09-21 12:26:41,967 INFO L226 Difference]: Without dead ends: 19 [2020-09-21 12:26:41,969 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-21 12:26:41,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-09-21 12:26:41,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2020-09-21 12:26:41,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-09-21 12:26:41,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2020-09-21 12:26:41,977 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 16 [2020-09-21 12:26:41,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:26:41,977 INFO L479 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2020-09-21 12:26:41,978 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 12:26:41,978 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2020-09-21 12:26:41,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-09-21 12:26:41,979 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:26:41,979 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:26:41,979 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 12:26:41,980 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:26:41,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:26:41,980 INFO L82 PathProgramCache]: Analyzing trace with hash 1840889772, now seen corresponding path program 1 times [2020-09-21 12:26:41,980 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:26:41,981 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1659892343] [2020-09-21 12:26:41,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:26:42,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:26:42,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:42,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:26:42,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-21 12:26:42,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:26:42,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 302 [2020-09-21 12:26:42,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:26:42,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:26:42,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-21 12:26:42,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:26:42,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:26:42,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:26:42,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:26:42,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:42,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:26:42,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:26:42,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:26:42,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-21 12:26:42,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:26:42,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:26:42,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:26:42,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:26:42,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:26:42,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-21 12:26:42,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:26:42,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:42,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:26:42,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:26:42,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:26:42,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-21 12:26:42,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:26:42,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:26:42,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:26:42,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:26:42,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:26:42,466 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:26:42,467 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1659892343] [2020-09-21 12:26:42,467 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:26:42,467 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-21 12:26:42,468 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251437324] [2020-09-21 12:26:42,470 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-21 12:26:42,470 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:26:42,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-21 12:26:42,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-21 12:26:42,471 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 6 states. [2020-09-21 12:26:42,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:26:42,587 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2020-09-21 12:26:42,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-21 12:26:42,588 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-09-21 12:26:42,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:26:42,590 INFO L225 Difference]: With dead ends: 29 [2020-09-21 12:26:42,590 INFO L226 Difference]: Without dead ends: 21 [2020-09-21 12:26:42,591 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-21 12:26:42,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-09-21 12:26:42,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2020-09-21 12:26:42,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-09-21 12:26:42,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2020-09-21 12:26:42,603 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 18 [2020-09-21 12:26:42,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:26:42,604 INFO L479 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2020-09-21 12:26:42,604 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-21 12:26:42,604 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2020-09-21 12:26:42,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-09-21 12:26:42,606 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:26:42,607 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:26:42,609 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-21 12:26:42,609 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:26:42,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:26:42,613 INFO L82 PathProgramCache]: Analyzing trace with hash -488804505, now seen corresponding path program 2 times [2020-09-21 12:26:42,613 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:26:42,614 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [389827063] [2020-09-21 12:26:42,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:26:42,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:26:42,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:42,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:43,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:26:43,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-21 12:26:43,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:26:43,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 509 [2020-09-21 12:26:43,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:26:43,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:26:43,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-21 12:26:43,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 12:26:43,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-21 12:26:43,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:26:43,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:26:43,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:43,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:26:43,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:26:43,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:26:43,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:26:43,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:26:43,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:26:43,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:26:43,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:26:43,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:26:43,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-09-21 12:26:43,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:26:43,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:43,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:26:43,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:26:43,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:26:43,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 12:26:43,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:26:43,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:26:43,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:26:43,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:26:43,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:26:43,254 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:26:43,254 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [389827063] [2020-09-21 12:26:43,255 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:26:43,255 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-21 12:26:43,255 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258298943] [2020-09-21 12:26:43,255 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 12:26:43,256 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:26:43,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 12:26:43,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-21 12:26:43,257 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand 7 states. [2020-09-21 12:26:43,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:26:43,401 INFO L93 Difference]: Finished difference Result 31 states and 31 transitions. [2020-09-21 12:26:43,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-21 12:26:43,402 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 20 [2020-09-21 12:26:43,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:26:43,403 INFO L225 Difference]: With dead ends: 31 [2020-09-21 12:26:43,403 INFO L226 Difference]: Without dead ends: 23 [2020-09-21 12:26:43,403 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-09-21 12:26:43,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-09-21 12:26:43,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-09-21 12:26:43,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-09-21 12:26:43,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2020-09-21 12:26:43,409 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 20 [2020-09-21 12:26:43,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:26:43,410 INFO L479 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2020-09-21 12:26:43,410 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 12:26:43,410 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2020-09-21 12:26:43,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-09-21 12:26:43,411 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:26:43,411 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:26:43,411 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-21 12:26:43,411 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:26:43,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:26:43,412 INFO L82 PathProgramCache]: Analyzing trace with hash -1647043486, now seen corresponding path program 3 times [2020-09-21 12:26:43,412 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:26:43,412 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1848143925] [2020-09-21 12:26:43,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:26:43,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:26:43,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:43,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:44,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:26:44,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-21 12:26:44,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:26:44,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 668 [2020-09-21 12:26:44,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:26:44,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 12:26:44,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-21 12:26:44,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-21 12:26:44,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:26:44,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:26:44,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:26:44,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:44,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:26:44,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:26:44,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:26:44,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:26:44,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:26:44,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:26:44,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:26:44,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:26:44,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:26:44,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-21 12:26:44,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:26:44,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:44,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:26:44,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:26:44,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:26:44,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-21 12:26:44,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:26:44,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:26:44,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:26:44,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:26:44,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:26:44,216 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:26:44,217 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1848143925] [2020-09-21 12:26:44,217 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:26:44,217 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-21 12:26:44,218 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105698006] [2020-09-21 12:26:44,219 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-21 12:26:44,219 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:26:44,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-21 12:26:44,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-09-21 12:26:44,220 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand 8 states. [2020-09-21 12:26:44,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:26:44,360 INFO L93 Difference]: Finished difference Result 33 states and 33 transitions. [2020-09-21 12:26:44,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-21 12:26:44,363 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 22 [2020-09-21 12:26:44,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:26:44,364 INFO L225 Difference]: With dead ends: 33 [2020-09-21 12:26:44,364 INFO L226 Difference]: Without dead ends: 25 [2020-09-21 12:26:44,366 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2020-09-21 12:26:44,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-09-21 12:26:44,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2020-09-21 12:26:44,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-09-21 12:26:44,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2020-09-21 12:26:44,374 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 22 [2020-09-21 12:26:44,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:26:44,374 INFO L479 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2020-09-21 12:26:44,375 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-21 12:26:44,375 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2020-09-21 12:26:44,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-09-21 12:26:44,378 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:26:44,378 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:26:44,378 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-21 12:26:44,379 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:26:44,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:26:44,380 INFO L82 PathProgramCache]: Analyzing trace with hash 1976792733, now seen corresponding path program 4 times [2020-09-21 12:26:44,380 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:26:44,380 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1212961005] [2020-09-21 12:26:44,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:26:44,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:26:44,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:44,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:45,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:26:45,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-21 12:26:45,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:26:45,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 930 [2020-09-21 12:26:45,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:26:45,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-21 12:26:45,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-21 12:26:45,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-21 12:26:45,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:26:45,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:26:45,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:26:45,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:45,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:26:45,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:26:45,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:26:45,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:26:45,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:26:45,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:26:45,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:26:45,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:26:45,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:26:45,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-09-21 12:26:45,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:26:45,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:45,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:26:45,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:26:45,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:26:45,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:26:45,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:26:45,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:26:45,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:26:45,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:26:45,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:26:45,453 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:26:45,454 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1212961005] [2020-09-21 12:26:45,455 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:26:45,455 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-21 12:26:45,456 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449809200] [2020-09-21 12:26:45,456 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-21 12:26:45,456 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:26:45,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-21 12:26:45,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-09-21 12:26:45,457 INFO L87 Difference]: Start difference. First operand 25 states and 25 transitions. Second operand 9 states. [2020-09-21 12:26:45,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:26:45,599 INFO L93 Difference]: Finished difference Result 35 states and 35 transitions. [2020-09-21 12:26:45,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-21 12:26:45,599 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 24 [2020-09-21 12:26:45,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:26:45,600 INFO L225 Difference]: With dead ends: 35 [2020-09-21 12:26:45,600 INFO L226 Difference]: Without dead ends: 27 [2020-09-21 12:26:45,601 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2020-09-21 12:26:45,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-09-21 12:26:45,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-09-21 12:26:45,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-09-21 12:26:45,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2020-09-21 12:26:45,615 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 24 [2020-09-21 12:26:45,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:26:45,616 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2020-09-21 12:26:45,616 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-21 12:26:45,616 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2020-09-21 12:26:45,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-09-21 12:26:45,617 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:26:45,618 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:26:45,618 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-21 12:26:45,619 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:26:45,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:26:45,619 INFO L82 PathProgramCache]: Analyzing trace with hash 1264922136, now seen corresponding path program 5 times [2020-09-21 12:26:45,620 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:26:45,620 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [187870729] [2020-09-21 12:26:45,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:26:45,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:26:45,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:45,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:46,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:26:46,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-21 12:26:46,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:26:46,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1002 [2020-09-21 12:26:46,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:26:46,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-21 12:26:46,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-21 12:26:46,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-21 12:26:46,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:26:46,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:26:46,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:26:46,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:46,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:26:46,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:26:46,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:26:46,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:26:46,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:26:46,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:26:46,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:26:46,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:26:46,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:26:46,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-21 12:26:46,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:26:46,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:46,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:26:46,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:26:46,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:26:46,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 12:26:46,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:26:46,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:26:46,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:26:46,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:26:46,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:26:46,850 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:26:46,851 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [187870729] [2020-09-21 12:26:46,851 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:26:46,852 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-21 12:26:46,853 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378785984] [2020-09-21 12:26:46,853 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-21 12:26:46,854 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:26:46,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-21 12:26:46,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-09-21 12:26:46,857 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand 10 states. [2020-09-21 12:26:47,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:26:47,085 INFO L93 Difference]: Finished difference Result 37 states and 37 transitions. [2020-09-21 12:26:47,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-21 12:26:47,086 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 26 [2020-09-21 12:26:47,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:26:47,087 INFO L225 Difference]: With dead ends: 37 [2020-09-21 12:26:47,087 INFO L226 Difference]: Without dead ends: 29 [2020-09-21 12:26:47,087 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=86, Invalid=154, Unknown=0, NotChecked=0, Total=240 [2020-09-21 12:26:47,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-09-21 12:26:47,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-09-21 12:26:47,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-09-21 12:26:47,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2020-09-21 12:26:47,097 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 26 [2020-09-21 12:26:47,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:26:47,098 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2020-09-21 12:26:47,101 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-21 12:26:47,102 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2020-09-21 12:26:47,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-09-21 12:26:47,103 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:26:47,103 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:26:47,103 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-21 12:26:47,103 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:26:47,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:26:47,104 INFO L82 PathProgramCache]: Analyzing trace with hash 57078483, now seen corresponding path program 6 times [2020-09-21 12:26:47,104 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:26:47,105 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1238858795] [2020-09-21 12:26:47,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:26:47,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:26:47,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:47,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:48,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:26:48,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-21 12:26:48,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:26:48,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1001 [2020-09-21 12:26:48,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:26:48,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-21 12:26:48,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-21 12:26:48,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-21 12:26:48,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:26:48,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:26:48,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:26:48,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:48,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:26:48,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:26:48,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:26:48,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:26:48,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:26:48,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:26:48,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:26:48,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:26:48,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:26:48,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-21 12:26:48,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:26:48,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:48,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:26:48,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:26:48,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:26:48,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:26:48,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:26:48,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:26:48,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:26:48,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:26:48,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:26:48,277 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:26:48,277 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1238858795] [2020-09-21 12:26:48,277 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:26:48,278 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-21 12:26:48,278 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991770995] [2020-09-21 12:26:48,278 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-21 12:26:48,279 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:26:48,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-21 12:26:48,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-09-21 12:26:48,280 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand 11 states. [2020-09-21 12:26:48,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:26:48,526 INFO L93 Difference]: Finished difference Result 39 states and 39 transitions. [2020-09-21 12:26:48,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-21 12:26:48,527 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-09-21 12:26:48,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:26:48,528 INFO L225 Difference]: With dead ends: 39 [2020-09-21 12:26:48,528 INFO L226 Difference]: Without dead ends: 31 [2020-09-21 12:26:48,529 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=110, Invalid=196, Unknown=0, NotChecked=0, Total=306 [2020-09-21 12:26:48,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-09-21 12:26:48,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-09-21 12:26:48,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-09-21 12:26:48,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions. [2020-09-21 12:26:48,534 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 28 [2020-09-21 12:26:48,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:26:48,534 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 31 transitions. [2020-09-21 12:26:48,535 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-21 12:26:48,535 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions. [2020-09-21 12:26:48,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-09-21 12:26:48,536 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:26:48,536 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:26:48,536 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-21 12:26:48,536 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:26:48,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:26:48,537 INFO L82 PathProgramCache]: Analyzing trace with hash -1039502130, now seen corresponding path program 7 times [2020-09-21 12:26:48,537 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:26:48,537 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1676986537] [2020-09-21 12:26:48,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:26:48,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:26:48,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:48,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:49,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:26:49,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-21 12:26:49,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:26:49,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1009 [2020-09-21 12:26:49,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:26:49,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-21 12:26:49,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-21 12:26:49,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-21 12:26:49,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:26:49,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:26:49,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:26:49,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:49,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:26:49,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:26:49,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:26:49,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 12:26:49,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:26:49,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:26:49,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:26:49,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:26:49,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:26:49,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-21 12:26:49,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:26:49,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:49,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:26:49,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:26:49,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:26:49,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-21 12:26:49,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:26:49,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:26:49,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:26:49,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 12:26:49,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:26:49,896 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 6 proven. 14 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-09-21 12:26:49,897 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1676986537] [2020-09-21 12:26:49,897 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:26:49,897 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-21 12:26:49,897 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452094526] [2020-09-21 12:26:49,898 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-21 12:26:49,898 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:26:49,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-21 12:26:49,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-09-21 12:26:49,899 INFO L87 Difference]: Start difference. First operand 31 states and 31 transitions. Second operand 10 states. [2020-09-21 12:26:50,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:26:50,173 INFO L93 Difference]: Finished difference Result 31 states and 31 transitions. [2020-09-21 12:26:50,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-21 12:26:50,174 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 30 [2020-09-21 12:26:50,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:26:50,174 INFO L225 Difference]: With dead ends: 31 [2020-09-21 12:26:50,175 INFO L226 Difference]: Without dead ends: 0 [2020-09-21 12:26:50,175 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2020-09-21 12:26:50,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-21 12:26:50,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-21 12:26:50,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-21 12:26:50,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-21 12:26:50,176 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 30 [2020-09-21 12:26:50,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:26:50,177 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-21 12:26:50,177 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-21 12:26:50,177 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-21 12:26:50,177 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-21 12:26:50,177 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-21 12:26:50,180 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-21 12:26:50,257 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-09-21 12:26:50,258 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2020-09-21 12:26:50,258 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-21 12:26:50,258 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-21 12:26:50,258 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-21 12:26:50,259 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-21 12:26:50,259 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-21 12:26:50,259 INFO L268 CegarLoopResult]: For program point L29(line 29) no Hoare annotation was computed. [2020-09-21 12:26:50,259 INFO L268 CegarLoopResult]: For program point L29-1(lines 29 31) no Hoare annotation was computed. [2020-09-21 12:26:50,259 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 14 38) no Hoare annotation was computed. [2020-09-21 12:26:50,259 INFO L268 CegarLoopResult]: For program point L21(lines 21 32) no Hoare annotation was computed. [2020-09-21 12:26:50,259 INFO L268 CegarLoopResult]: For program point L21-2(lines 21 32) no Hoare annotation was computed. [2020-09-21 12:26:50,260 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 14 38) no Hoare annotation was computed. [2020-09-21 12:26:50,260 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 36) no Hoare annotation was computed. [2020-09-21 12:26:50,260 INFO L264 CegarLoopResult]: At program point L30(lines 15 38) the Hoare annotation is: false [2020-09-21 12:26:50,260 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 14 38) the Hoare annotation is: (= |old(#valid)| |#valid|) [2020-09-21 12:26:50,260 INFO L268 CegarLoopResult]: For program point L26-1(lines 26 28) no Hoare annotation was computed. [2020-09-21 12:26:50,261 INFO L264 CegarLoopResult]: At program point L26-3(lines 26 28) the Hoare annotation is: (let ((.cse0 (select (select |#memory_int| main_~pa~0.base) main_~pa~0.offset))) (and (= main_~pa~0.base |main_~#ad1~0.base|) (= (+ (* .cse0 8) |main_~#ad1~0.offset|) main_~pa~0.offset) (<= main_~i~0 .cse0))) [2020-09-21 12:26:50,261 INFO L264 CegarLoopResult]: At program point L26-4(lines 26 28) the Hoare annotation is: (let ((.cse0 (select (select |#memory_int| main_~pa~0.base) main_~pa~0.offset))) (and (= main_~pa~0.base |main_~#ad1~0.base|) (= main_~i~0 (select (select |#memory_int| |main_~#ad1~0.base|) (+ (* main_~i~0 8) |main_~#ad1~0.offset|))) (= (+ (* 8 .cse0) |main_~#ad1~0.offset|) main_~pa~0.offset) (<= main_~i~0 .cse0))) [2020-09-21 12:26:50,261 INFO L271 CegarLoopResult]: At program point checkENTRY(lines 9 12) the Hoare annotation is: true [2020-09-21 12:26:50,261 INFO L268 CegarLoopResult]: For program point checkFINAL(lines 9 12) no Hoare annotation was computed. [2020-09-21 12:26:50,261 INFO L268 CegarLoopResult]: For program point checkEXIT(lines 9 12) no Hoare annotation was computed. [2020-09-21 12:26:50,275 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-21 12:26:50,276 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-21 12:26:50,283 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-21 12:26:50,283 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-21 12:26:50,286 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 12:26:50 BoogieIcfgContainer [2020-09-21 12:26:50,287 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-21 12:26:50,290 INFO L168 Benchmark]: Toolchain (without parser) took 10464.25 ms. Allocated memory was 138.9 MB in the beginning and 314.0 MB in the end (delta: 175.1 MB). Free memory was 102.0 MB in the beginning and 257.2 MB in the end (delta: -155.1 MB). Peak memory consumption was 20.0 MB. Max. memory is 7.1 GB. [2020-09-21 12:26:50,291 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.1 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. [2020-09-21 12:26:50,292 INFO L168 Benchmark]: CACSL2BoogieTranslator took 318.20 ms. Allocated memory is still 138.9 MB. Free memory was 101.6 MB in the beginning and 91.4 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. [2020-09-21 12:26:50,293 INFO L168 Benchmark]: Boogie Preprocessor took 118.53 ms. Allocated memory was 138.9 MB in the beginning and 201.3 MB in the end (delta: 62.4 MB). Free memory was 91.4 MB in the beginning and 178.6 MB in the end (delta: -87.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. [2020-09-21 12:26:50,294 INFO L168 Benchmark]: RCFGBuilder took 383.35 ms. Allocated memory is still 201.3 MB. Free memory was 178.6 MB in the beginning and 164.0 MB in the end (delta: 14.6 MB). Peak memory consumption was 14.6 MB. Max. memory is 7.1 GB. [2020-09-21 12:26:50,295 INFO L168 Benchmark]: TraceAbstraction took 9633.49 ms. Allocated memory was 201.3 MB in the beginning and 314.0 MB in the end (delta: 112.7 MB). Free memory was 164.0 MB in the beginning and 257.2 MB in the end (delta: -93.2 MB). Peak memory consumption was 19.6 MB. Max. memory is 7.1 GB. [2020-09-21 12:26:50,299 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 138.9 MB. Free memory was 120.5 MB in the beginning and 120.1 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 318.20 ms. Allocated memory is still 138.9 MB. Free memory was 101.6 MB in the beginning and 91.4 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 118.53 ms. Allocated memory was 138.9 MB in the beginning and 201.3 MB in the end (delta: 62.4 MB). Free memory was 91.4 MB in the beginning and 178.6 MB in the end (delta: -87.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 383.35 ms. Allocated memory is still 201.3 MB. Free memory was 178.6 MB in the beginning and 164.0 MB in the end (delta: 14.6 MB). Peak memory consumption was 14.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 9633.49 ms. Allocated memory was 201.3 MB in the beginning and 314.0 MB in the end (delta: 112.7 MB). Free memory was 164.0 MB in the beginning and 257.2 MB in the end (delta: -93.2 MB). Peak memory consumption was 19.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 36]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 26]: Loop Invariant [2020-09-21 12:26:50,308 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-21 12:26:50,309 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-21 12:26:50,309 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-21 12:26:50,310 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int Derived loop invariant: (pa == ad1 && unknown-#memory_int-unknown[pa][pa] * 8 + ad1 == pa) && i <= unknown-#memory_int-unknown[pa][pa] - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 22 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 9.4s, OverallIterations: 9, TraceHistogramMax: 8, AutomataDifference: 1.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 120 SDtfs, 50 SDslu, 361 SDs, 0 SdLazy, 430 SolverSat, 30 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 128 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31occurred in iteration=8, 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, 9 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 16 PreInvPairs, 24 NumberOfFragments, 72 HoareAnnotationTreeSize, 16 FomulaSimplifications, 218 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 16 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 7.2s InterpolantComputationTime, 199 NumberOfCodeBlocks, 199 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 190 ConstructedInterpolants, 0 QuantifiedInterpolants, 24420 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 2 PerfectInterpolantSequences, 42/168 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...