/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/loop-lit/ddlm2013.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 09:43:30,037 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 09:43:30,041 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 09:43:30,099 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 09:43:30,100 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 09:43:30,106 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 09:43:30,109 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 09:43:30,113 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 09:43:30,116 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 09:43:30,122 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 09:43:30,124 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 09:43:30,125 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 09:43:30,126 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 09:43:30,129 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 09:43:30,131 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 09:43:30,133 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 09:43:30,135 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 09:43:30,139 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 09:43:30,155 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 09:43:30,163 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 09:43:30,168 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 09:43:30,170 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 09:43:30,171 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 09:43:30,172 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 09:43:30,175 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 09:43:30,176 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 09:43:30,180 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 09:43:30,182 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 09:43:30,183 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 09:43:30,184 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 09:43:30,184 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 09:43:30,185 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 09:43:30,187 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 09:43:30,188 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 09:43:30,189 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 09:43:30,189 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 09:43:30,190 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 09:43:30,190 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 09:43:30,191 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 09:43:30,191 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 09:43:30,192 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 09:43:30,200 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 09:43:30,249 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 09:43:30,250 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 09:43:30,254 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 09:43:30,254 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 09:43:30,255 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 09:43:30,255 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 09:43:30,255 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 09:43:30,255 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 09:43:30,256 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 09:43:30,256 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 09:43:30,256 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 09:43:30,256 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 09:43:30,256 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 09:43:30,256 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 09:43:30,257 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 09:43:30,257 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 09:43:30,258 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 09:43:30,258 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 09:43:30,258 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 09:43:30,258 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 09:43:30,258 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 09:43:30,258 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 09:43:30,259 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 09:43:30,259 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 09:43:30,259 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 09:43:30,259 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 09:43:30,259 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 09:43:30,260 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 09:43:30,260 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 09:43:30,261 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 09:43:30,631 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 09:43:30,680 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 09:43:30,684 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 09:43:30,685 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 09:43:30,686 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 09:43:30,688 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/ddlm2013.i [2020-10-29 09:43:30,768 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f12fd3c99/94949f2fb6b74545b5f105fec5c9e3da/FLAGf2b80e0da [2020-10-29 09:43:31,421 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 09:43:31,422 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-lit/ddlm2013.i [2020-10-29 09:43:31,431 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f12fd3c99/94949f2fb6b74545b5f105fec5c9e3da/FLAGf2b80e0da [2020-10-29 09:43:31,751 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f12fd3c99/94949f2fb6b74545b5f105fec5c9e3da [2020-10-29 09:43:31,754 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 09:43:31,761 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 09:43:31,763 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 09:43:31,764 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 09:43:31,768 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 09:43:31,769 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 09:43:31" (1/1) ... [2020-10-29 09:43:31,773 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ad199fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:43:31, skipping insertion in model container [2020-10-29 09:43:31,774 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 09:43:31" (1/1) ... [2020-10-29 09:43:31,783 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 09:43:31,802 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 09:43:32,027 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 09:43:32,039 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 09:43:32,061 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 09:43:32,087 INFO L208 MainTranslator]: Completed translation [2020-10-29 09:43:32,087 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:43:32 WrapperNode [2020-10-29 09:43:32,088 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 09:43:32,089 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 09:43:32,089 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 09:43:32,090 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 09:43:32,107 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:43:32" (1/1) ... [2020-10-29 09:43:32,109 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:43:32" (1/1) ... [2020-10-29 09:43:32,121 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:43:32" (1/1) ... [2020-10-29 09:43:32,121 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:43:32" (1/1) ... [2020-10-29 09:43:32,137 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:43:32" (1/1) ... [2020-10-29 09:43:32,143 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:43:32" (1/1) ... [2020-10-29 09:43:32,153 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:43:32" (1/1) ... [2020-10-29 09:43:32,157 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 09:43:32,160 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 09:43:32,160 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 09:43:32,160 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 09:43:32,162 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:43:32" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 09:43:32,258 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 09:43:32,258 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 09:43:32,259 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 09:43:32,259 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-29 09:43:32,260 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-29 09:43:32,260 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 09:43:32,260 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 09:43:32,261 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 09:43:32,261 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-29 09:43:32,261 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-29 09:43:32,262 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 09:43:32,262 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 09:43:32,262 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-29 09:43:32,263 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-29 09:43:32,263 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 09:43:32,264 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 09:43:32,264 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 09:43:32,264 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 09:43:32,264 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 09:43:32,265 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 09:43:32,265 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 09:43:32,265 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 09:43:32,660 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 09:43:32,660 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 09:43:32,662 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 09:43:32 BoogieIcfgContainer [2020-10-29 09:43:32,662 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 09:43:32,664 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 09:43:32,665 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 09:43:32,668 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 09:43:32,669 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 09:43:31" (1/3) ... [2020-10-29 09:43:32,670 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19e22f75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 09:43:32, skipping insertion in model container [2020-10-29 09:43:32,670 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:43:32" (2/3) ... [2020-10-29 09:43:32,670 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19e22f75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 09:43:32, skipping insertion in model container [2020-10-29 09:43:32,671 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 09:43:32" (3/3) ... [2020-10-29 09:43:32,672 INFO L111 eAbstractionObserver]: Analyzing ICFG ddlm2013.i [2020-10-29 09:43:32,685 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 09:43:32,690 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 09:43:32,716 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 09:43:32,775 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 09:43:32,775 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 09:43:32,775 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 09:43:32,775 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 09:43:32,775 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 09:43:32,776 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 09:43:32,776 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 09:43:32,776 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 09:43:32,794 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2020-10-29 09:43:32,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-29 09:43:32,800 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:43:32,801 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:43:32,801 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:43:32,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:43:32,808 INFO L82 PathProgramCache]: Analyzing trace with hash -2013076175, now seen corresponding path program 1 times [2020-10-29 09:43:32,818 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:43:32,819 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [974413629] [2020-10-29 09:43:32,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:43:32,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:43:33,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:43:33,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:43:33,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:43:33,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 09:43:33,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:43:33,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 432 [2020-10-29 09:43:33,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:43:33,396 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:43:33,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 09:43:33,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:43:33,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-29 09:43:33,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 09:43:33,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:43:33,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:43:33,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:43:33,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:43:33,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:43:33,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:43:33,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 09:43:33,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:43:33,631 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:43:33,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:43:33,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:43:33,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:43:33,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:43:33,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:43:33,648 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [974413629] [2020-10-29 09:43:33,650 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:43:33,650 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 09:43:33,651 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369911681] [2020-10-29 09:43:33,657 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 09:43:33,657 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:43:33,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 09:43:33,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 09:43:33,675 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 6 states. [2020-10-29 09:43:33,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:43:33,973 INFO L93 Difference]: Finished difference Result 54 states and 69 transitions. [2020-10-29 09:43:33,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 09:43:33,975 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-10-29 09:43:33,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:43:33,983 INFO L225 Difference]: With dead ends: 54 [2020-10-29 09:43:33,984 INFO L226 Difference]: Without dead ends: 20 [2020-10-29 09:43:33,987 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-29 09:43:34,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-10-29 09:43:34,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2020-10-29 09:43:34,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-10-29 09:43:34,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2020-10-29 09:43:34,047 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 15 [2020-10-29 09:43:34,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:43:34,047 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2020-10-29 09:43:34,048 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 09:43:34,048 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2020-10-29 09:43:34,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-29 09:43:34,049 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:43:34,050 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:43:34,051 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 09:43:34,051 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:43:34,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:43:34,053 INFO L82 PathProgramCache]: Analyzing trace with hash 1289977208, now seen corresponding path program 1 times [2020-10-29 09:43:34,054 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:43:34,057 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1591642756] [2020-10-29 09:43:34,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:43:34,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:43:34,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:43:34,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:43:34,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-29 09:43:34,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:43:34,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 274 [2020-10-29 09:43:34,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:43:34,399 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:43:34,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 09:43:34,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:43:34,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-29 09:43:34,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:43:34,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:43:34,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:43:34,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:43:34,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:43:34,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:43:34,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:43:34,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 09:43:34,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:43:34,634 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:43:34,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:43:34,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:43:34,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:43:34,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-29 09:43:34,652 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:43:34,652 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1591642756] [2020-10-29 09:43:34,654 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:43:34,654 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 09:43:34,655 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859113682] [2020-10-29 09:43:34,656 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 09:43:34,657 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:43:34,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 09:43:34,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-29 09:43:34,670 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand 8 states. [2020-10-29 09:43:35,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:43:35,044 INFO L93 Difference]: Finished difference Result 33 states and 36 transitions. [2020-10-29 09:43:35,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 09:43:35,044 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-10-29 09:43:35,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:43:35,046 INFO L225 Difference]: With dead ends: 33 [2020-10-29 09:43:35,046 INFO L226 Difference]: Without dead ends: 25 [2020-10-29 09:43:35,048 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2020-10-29 09:43:35,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-10-29 09:43:35,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 23. [2020-10-29 09:43:35,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-10-29 09:43:35,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2020-10-29 09:43:35,061 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 19 [2020-10-29 09:43:35,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:43:35,062 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2020-10-29 09:43:35,063 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 09:43:35,063 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2020-10-29 09:43:35,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-29 09:43:35,064 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:43:35,064 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:43:35,065 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 09:43:35,065 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:43:35,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:43:35,068 INFO L82 PathProgramCache]: Analyzing trace with hash 703171194, now seen corresponding path program 1 times [2020-10-29 09:43:35,072 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:43:35,073 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [961673412] [2020-10-29 09:43:35,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:43:35,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:43:35,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:43:35,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:43:35,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:43:35,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-29 09:43:35,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:43:35,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-10-29 09:43:35,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:43:35,232 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:43:35,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:43:35,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 09:43:35,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 09:43:35,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:43:35,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:43:35,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:43:35,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:43:35,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:43:35,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:43:35,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:43:35,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 09:43:35,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:43:35,286 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:43:35,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:43:35,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:43:35,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:43:35,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:43:35,291 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-29 09:43:35,292 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [961673412] [2020-10-29 09:43:35,292 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:43:35,292 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 09:43:35,292 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333979621] [2020-10-29 09:43:35,293 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 09:43:35,294 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:43:35,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 09:43:35,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 09:43:35,297 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand 4 states. [2020-10-29 09:43:35,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:43:35,375 INFO L93 Difference]: Finished difference Result 36 states and 40 transitions. [2020-10-29 09:43:35,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-29 09:43:35,376 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-10-29 09:43:35,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:43:35,377 INFO L225 Difference]: With dead ends: 36 [2020-10-29 09:43:35,377 INFO L226 Difference]: Without dead ends: 23 [2020-10-29 09:43:35,379 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 09:43:35,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-10-29 09:43:35,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-10-29 09:43:35,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-10-29 09:43:35,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2020-10-29 09:43:35,390 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 19 [2020-10-29 09:43:35,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:43:35,390 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2020-10-29 09:43:35,390 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 09:43:35,391 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2020-10-29 09:43:35,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-29 09:43:35,393 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:43:35,393 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:43:35,394 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 09:43:35,394 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:43:35,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:43:35,395 INFO L82 PathProgramCache]: Analyzing trace with hash 1478904932, now seen corresponding path program 2 times [2020-10-29 09:43:35,396 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:43:35,396 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1272638263] [2020-10-29 09:43:35,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:43:35,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:43:35,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:43:35,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:43:35,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-29 09:43:35,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:43:35,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 263 [2020-10-29 09:43:35,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:43:35,692 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:43:35,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 09:43:35,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:43:35,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 09:43:35,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:43:35,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:43:35,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:43:35,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:43:35,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:43:35,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:43:35,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:43:35,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 09:43:35,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:43:35,944 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:43:35,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:43:35,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:43:35,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:43:35,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:43:35,951 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:43:35,951 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1272638263] [2020-10-29 09:43:35,951 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:43:35,952 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 09:43:35,952 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868278154] [2020-10-29 09:43:35,952 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 09:43:35,953 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:43:35,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 09:43:35,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-29 09:43:35,954 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand 10 states. [2020-10-29 09:43:36,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:43:36,430 INFO L93 Difference]: Finished difference Result 36 states and 39 transitions. [2020-10-29 09:43:36,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 09:43:36,430 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 22 [2020-10-29 09:43:36,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:43:36,431 INFO L225 Difference]: With dead ends: 36 [2020-10-29 09:43:36,432 INFO L226 Difference]: Without dead ends: 28 [2020-10-29 09:43:36,432 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2020-10-29 09:43:36,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-10-29 09:43:36,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 26. [2020-10-29 09:43:36,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-10-29 09:43:36,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2020-10-29 09:43:36,438 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 22 [2020-10-29 09:43:36,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:43:36,439 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2020-10-29 09:43:36,439 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 09:43:36,439 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2020-10-29 09:43:36,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-29 09:43:36,440 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:43:36,440 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:43:36,440 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 09:43:36,440 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:43:36,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:43:36,441 INFO L82 PathProgramCache]: Analyzing trace with hash 892098918, now seen corresponding path program 1 times [2020-10-29 09:43:36,441 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:43:36,441 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [993336524] [2020-10-29 09:43:36,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:43:36,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:43:36,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:43:36,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:43:36,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:43:36,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-29 09:43:36,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:43:36,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-10-29 09:43:36,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:43:36,604 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:43:36,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 09:43:36,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 09:43:36,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-29 09:43:36,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:43:36,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:43:36,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:43:36,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:43:36,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:43:36,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:43:36,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:43:36,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 09:43:36,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:43:36,678 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:43:36,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:43:36,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:43:36,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:43:36,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:43:36,682 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-29 09:43:36,683 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [993336524] [2020-10-29 09:43:36,683 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:43:36,683 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 09:43:36,684 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274146008] [2020-10-29 09:43:36,684 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 09:43:36,684 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:43:36,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 09:43:36,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 09:43:36,685 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand 5 states. [2020-10-29 09:43:36,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:43:36,798 INFO L93 Difference]: Finished difference Result 39 states and 43 transitions. [2020-10-29 09:43:36,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 09:43:36,799 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2020-10-29 09:43:36,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:43:36,799 INFO L225 Difference]: With dead ends: 39 [2020-10-29 09:43:36,799 INFO L226 Difference]: Without dead ends: 26 [2020-10-29 09:43:36,800 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 09:43:36,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-10-29 09:43:36,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-10-29 09:43:36,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-10-29 09:43:36,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2020-10-29 09:43:36,806 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 22 [2020-10-29 09:43:36,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:43:36,806 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2020-10-29 09:43:36,807 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 09:43:36,807 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2020-10-29 09:43:36,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-29 09:43:36,808 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:43:36,808 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:43:36,808 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 09:43:36,808 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:43:36,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:43:36,809 INFO L82 PathProgramCache]: Analyzing trace with hash -877394440, now seen corresponding path program 3 times [2020-10-29 09:43:36,809 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:43:36,809 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1208098344] [2020-10-29 09:43:36,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:43:36,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:43:36,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:43:37,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:43:37,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-29 09:43:37,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:43:37,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 236 [2020-10-29 09:43:37,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:43:37,063 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:43:37,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 09:43:37,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:43:37,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-29 09:43:37,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:43:37,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:43:37,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:43:37,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:43:37,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:43:37,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:43:37,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:43:37,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 09:43:37,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:43:37,370 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:43:37,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:43:37,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:43:37,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:43:37,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:43:37,381 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:43:37,381 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1208098344] [2020-10-29 09:43:37,383 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:43:37,383 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-29 09:43:37,383 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069006849] [2020-10-29 09:43:37,384 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 09:43:37,384 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:43:37,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 09:43:37,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-10-29 09:43:37,386 INFO L87 Difference]: Start difference. First operand 26 states and 26 transitions. Second operand 12 states. [2020-10-29 09:43:40,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:43:40,053 INFO L93 Difference]: Finished difference Result 37 states and 37 transitions. [2020-10-29 09:43:40,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 09:43:40,054 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 25 [2020-10-29 09:43:40,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:43:40,055 INFO L225 Difference]: With dead ends: 37 [2020-10-29 09:43:40,055 INFO L226 Difference]: Without dead ends: 29 [2020-10-29 09:43:40,056 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=354, Unknown=0, NotChecked=0, Total=420 [2020-10-29 09:43:40,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-10-29 09:43:40,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-10-29 09:43:40,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-29 09:43:40,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2020-10-29 09:43:40,061 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 25 [2020-10-29 09:43:40,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:43:40,061 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2020-10-29 09:43:40,061 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 09:43:40,062 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2020-10-29 09:43:40,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-29 09:43:40,062 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:43:40,063 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:43:40,063 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 09:43:40,063 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:43:40,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:43:40,064 INFO L82 PathProgramCache]: Analyzing trace with hash -446499868, now seen corresponding path program 4 times [2020-10-29 09:43:40,064 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:43:40,064 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [531301831] [2020-10-29 09:43:40,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:43:40,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:43:40,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:43:40,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:43:40,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-29 09:43:40,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:43:40,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 303 [2020-10-29 09:43:40,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:43:40,386 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:43:40,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 09:43:40,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:43:40,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 09:43:40,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:43:40,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:43:40,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:43:40,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:43:40,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:43:40,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:43:40,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:43:40,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 09:43:40,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:43:40,874 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:43:40,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:43:40,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:43:40,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:43:40,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:43:40,885 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:43:40,885 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [531301831] [2020-10-29 09:43:40,885 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:43:40,886 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-29 09:43:40,886 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553989781] [2020-10-29 09:43:40,886 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-29 09:43:40,887 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:43:40,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-29 09:43:40,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2020-10-29 09:43:40,888 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand 14 states. [2020-10-29 09:43:41,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:43:41,913 INFO L93 Difference]: Finished difference Result 40 states and 40 transitions. [2020-10-29 09:43:41,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 09:43:41,918 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 28 [2020-10-29 09:43:41,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:43:41,919 INFO L225 Difference]: With dead ends: 40 [2020-10-29 09:43:41,919 INFO L226 Difference]: Without dead ends: 32 [2020-10-29 09:43:41,921 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=77, Invalid=523, Unknown=0, NotChecked=0, Total=600 [2020-10-29 09:43:41,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-29 09:43:41,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2020-10-29 09:43:41,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-29 09:43:41,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 32 transitions. [2020-10-29 09:43:41,926 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 32 transitions. Word has length 28 [2020-10-29 09:43:41,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:43:41,927 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 32 transitions. [2020-10-29 09:43:41,927 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-29 09:43:41,927 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 32 transitions. [2020-10-29 09:43:41,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-29 09:43:41,928 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:43:41,928 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:43:41,928 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 09:43:41,928 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:43:41,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:43:41,929 INFO L82 PathProgramCache]: Analyzing trace with hash -1323553160, now seen corresponding path program 5 times [2020-10-29 09:43:41,929 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:43:41,929 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [468582609] [2020-10-29 09:43:41,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:43:41,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:43:41,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:43:42,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:43:42,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-29 09:43:42,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:43:42,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 382 [2020-10-29 09:43:42,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:43:42,334 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:43:42,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 09:43:42,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:43:42,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-29 09:43:42,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:43:42,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:43:42,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:43:42,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:43:42,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:43:42,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:43:42,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:43:42,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 09:43:42,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:43:42,868 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:43:42,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:43:42,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:43:42,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:43:42,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:43:42,878 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:43:42,878 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [468582609] [2020-10-29 09:43:42,878 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:43:42,878 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-29 09:43:42,879 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850683220] [2020-10-29 09:43:42,879 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-29 09:43:42,879 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:43:42,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-29 09:43:42,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2020-10-29 09:43:42,880 INFO L87 Difference]: Start difference. First operand 32 states and 32 transitions. Second operand 16 states. [2020-10-29 09:43:43,167 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 53 [2020-10-29 09:43:48,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:43:48,413 INFO L93 Difference]: Finished difference Result 43 states and 43 transitions. [2020-10-29 09:43:48,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-29 09:43:48,414 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 31 [2020-10-29 09:43:48,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:43:48,415 INFO L225 Difference]: With dead ends: 43 [2020-10-29 09:43:48,415 INFO L226 Difference]: Without dead ends: 35 [2020-10-29 09:43:48,419 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=89, Invalid=723, Unknown=0, NotChecked=0, Total=812 [2020-10-29 09:43:48,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-10-29 09:43:48,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-10-29 09:43:48,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-29 09:43:48,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 35 transitions. [2020-10-29 09:43:48,424 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 35 transitions. Word has length 31 [2020-10-29 09:43:48,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:43:48,424 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 35 transitions. [2020-10-29 09:43:48,424 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-29 09:43:48,424 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 35 transitions. [2020-10-29 09:43:48,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-29 09:43:48,425 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:43:48,426 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:43:48,426 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 09:43:48,426 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:43:48,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:43:48,427 INFO L82 PathProgramCache]: Analyzing trace with hash 962853732, now seen corresponding path program 6 times [2020-10-29 09:43:48,427 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:43:48,427 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1299640236] [2020-10-29 09:43:48,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:43:48,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:43:48,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:43:48,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:43:48,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-29 09:43:48,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:43:48,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 500 [2020-10-29 09:43:48,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:43:48,951 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:43:48,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-29 09:43:48,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:43:48,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-29 09:43:48,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:43:49,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:43:49,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:43:49,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:43:49,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:43:49,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:43:49,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:43:49,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 09:43:49,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:43:49,475 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:43:49,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:43:49,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:43:49,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:43:49,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:43:49,485 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:43:49,485 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1299640236] [2020-10-29 09:43:49,486 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:43:49,486 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-29 09:43:49,491 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031714271] [2020-10-29 09:43:49,492 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-29 09:43:49,492 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:43:49,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-29 09:43:49,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2020-10-29 09:43:49,494 INFO L87 Difference]: Start difference. First operand 35 states and 35 transitions. Second operand 18 states. [2020-10-29 09:43:50,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:43:50,772 INFO L93 Difference]: Finished difference Result 46 states and 46 transitions. [2020-10-29 09:43:50,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-29 09:43:50,772 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 34 [2020-10-29 09:43:50,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:43:50,773 INFO L225 Difference]: With dead ends: 46 [2020-10-29 09:43:50,773 INFO L226 Difference]: Without dead ends: 38 [2020-10-29 09:43:50,775 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=101, Invalid=955, Unknown=0, NotChecked=0, Total=1056 [2020-10-29 09:43:50,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-29 09:43:50,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-10-29 09:43:50,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-29 09:43:50,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 38 transitions. [2020-10-29 09:43:50,780 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 38 transitions. Word has length 34 [2020-10-29 09:43:50,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:43:50,780 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 38 transitions. [2020-10-29 09:43:50,781 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-29 09:43:50,781 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 38 transitions. [2020-10-29 09:43:50,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-29 09:43:50,782 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:43:50,782 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:43:50,782 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 09:43:50,782 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:43:50,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:43:50,783 INFO L82 PathProgramCache]: Analyzing trace with hash 1424226040, now seen corresponding path program 7 times [2020-10-29 09:43:50,783 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:43:50,783 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1357141471] [2020-10-29 09:43:50,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:43:50,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:43:50,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:43:51,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:43:51,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-29 09:43:51,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:43:51,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 671 [2020-10-29 09:43:51,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:43:51,484 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:43:51,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-29 09:43:51,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:43:51,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-29 09:43:51,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:43:52,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:43:52,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:43:52,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:43:52,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:43:52,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:43:52,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:43:52,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 09:43:52,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:43:52,460 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:43:52,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:43:52,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:43:52,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:43:52,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:43:52,474 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:43:52,475 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1357141471] [2020-10-29 09:43:52,475 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:43:52,475 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-29 09:43:52,475 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580980775] [2020-10-29 09:43:52,476 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-29 09:43:52,476 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:43:52,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-29 09:43:52,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=342, Unknown=0, NotChecked=0, Total=380 [2020-10-29 09:43:52,477 INFO L87 Difference]: Start difference. First operand 38 states and 38 transitions. Second operand 20 states. [2020-10-29 09:43:52,822 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 57 [2020-10-29 09:43:53,043 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 54 [2020-10-29 09:43:53,276 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 53 [2020-10-29 09:43:53,935 WARN L193 SmtUtils]: Spent 579.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 54 [2020-10-29 09:43:54,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:43:54,110 INFO L93 Difference]: Finished difference Result 38 states and 38 transitions. [2020-10-29 09:43:54,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 09:43:54,110 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 37 [2020-10-29 09:43:54,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:43:54,111 INFO L225 Difference]: With dead ends: 38 [2020-10-29 09:43:54,111 INFO L226 Difference]: Without dead ends: 0 [2020-10-29 09:43:54,112 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=100, Invalid=602, Unknown=0, NotChecked=0, Total=702 [2020-10-29 09:43:54,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-29 09:43:54,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-29 09:43:54,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-29 09:43:54,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-29 09:43:54,114 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 37 [2020-10-29 09:43:54,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:43:54,114 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-29 09:43:54,114 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-29 09:43:54,114 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-29 09:43:54,114 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-29 09:43:54,114 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 09:43:54,117 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-29 09:43:54,344 INFO L274 CegarLoopResult]: For program point reach_errorEXIT(line 12) no Hoare annotation was computed. [2020-10-29 09:43:54,344 INFO L277 CegarLoopResult]: At program point reach_errorENTRY(line 12) the Hoare annotation is: true [2020-10-29 09:43:54,345 INFO L274 CegarLoopResult]: For program point L12-1(line 12) no Hoare annotation was computed. [2020-10-29 09:43:54,345 INFO L274 CegarLoopResult]: For program point L12-2(line 12) no Hoare annotation was computed. [2020-10-29 09:43:54,345 INFO L274 CegarLoopResult]: For program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-10-29 09:43:54,345 INFO L274 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-10-29 09:43:54,345 INFO L270 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string0.offset| |old(#t~string0.offset)|) (= |old(#length)| |#length|) (= |#t~string1.base| |old(#t~string1.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string0.base| |old(#t~string0.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|) (= |#t~string1.offset| |old(#t~string1.offset)|)) [2020-10-29 09:43:54,345 INFO L274 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-29 09:43:54,346 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-29 09:43:54,346 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-29 09:43:54,346 INFO L277 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-29 09:43:54,346 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-29 09:43:54,346 INFO L274 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-10-29 09:43:54,346 INFO L274 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 14 16) no Hoare annotation was computed. [2020-10-29 09:43:54,346 INFO L274 CegarLoopResult]: For program point L15-2(lines 14 16) no Hoare annotation was computed. [2020-10-29 09:43:54,346 INFO L274 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 14 16) no Hoare annotation was computed. [2020-10-29 09:43:54,346 INFO L274 CegarLoopResult]: For program point L35-2(lines 24 49) no Hoare annotation was computed. [2020-10-29 09:43:54,347 INFO L274 CegarLoopResult]: For program point mainEXIT(lines 24 49) no Hoare annotation was computed. [2020-10-29 09:43:54,347 INFO L270 CegarLoopResult]: At program point L46(line 46) the Hoare annotation is: (let ((.cse2 (div main_~a~0 4294967296)) (.cse3 (div main_~b~0 4294967296))) (let ((.cse1 (* 4294967296 .cse3)) (.cse0 (+ (* 4294967296 .cse2) main_~b~0))) (and (< .cse0 (+ .cse1 main_~a~0 1)) (<= (+ .cse1 main_~a~0) .cse0) (<= .cse2 .cse3)))) [2020-10-29 09:43:54,347 INFO L274 CegarLoopResult]: For program point mainFINAL(lines 24 49) no Hoare annotation was computed. [2020-10-29 09:43:54,347 INFO L274 CegarLoopResult]: For program point L30(lines 30 34) no Hoare annotation was computed. [2020-10-29 09:43:54,347 INFO L277 CegarLoopResult]: At program point mainENTRY(lines 24 49) the Hoare annotation is: true [2020-10-29 09:43:54,347 INFO L274 CegarLoopResult]: For program point L45(lines 45 47) no Hoare annotation was computed. [2020-10-29 09:43:54,347 INFO L274 CegarLoopResult]: For program point L39(lines 39 43) no Hoare annotation was computed. [2020-10-29 09:43:54,348 INFO L274 CegarLoopResult]: For program point L39-2(lines 24 49) no Hoare annotation was computed. [2020-10-29 09:43:54,348 INFO L274 CegarLoopResult]: For program point L35(lines 35 44) no Hoare annotation was computed. [2020-10-29 09:43:54,348 INFO L274 CegarLoopResult]: For program point L18-2(lines 17 22) no Hoare annotation was computed. [2020-10-29 09:43:54,348 INFO L277 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 17 22) the Hoare annotation is: true [2020-10-29 09:43:54,348 INFO L274 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 17 22) no Hoare annotation was computed. [2020-10-29 09:43:54,348 INFO L270 CegarLoopResult]: At program point L19(line 19) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2020-10-29 09:43:54,348 INFO L274 CegarLoopResult]: For program point L18(lines 18 20) no Hoare annotation was computed. [2020-10-29 09:43:54,348 INFO L274 CegarLoopResult]: For program point L19-1(line 19) no Hoare annotation was computed. [2020-10-29 09:43:54,354 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 09:43:54 BoogieIcfgContainer [2020-10-29 09:43:54,355 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-29 09:43:54,357 INFO L168 Benchmark]: Toolchain (without parser) took 22600.15 ms. Allocated memory was 164.6 MB in the beginning and 293.6 MB in the end (delta: 129.0 MB). Free memory was 139.6 MB in the beginning and 204.2 MB in the end (delta: -64.5 MB). Peak memory consumption was 65.7 MB. Max. memory is 8.0 GB. [2020-10-29 09:43:54,357 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 164.6 MB. Free memory is still 136.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-29 09:43:54,358 INFO L168 Benchmark]: CACSL2BoogieTranslator took 324.99 ms. Allocated memory is still 164.6 MB. Free memory was 138.9 MB in the beginning and 129.0 MB in the end (delta: 10.0 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-29 09:43:54,358 INFO L168 Benchmark]: Boogie Preprocessor took 68.69 ms. Allocated memory is still 164.6 MB. Free memory was 129.0 MB in the beginning and 127.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-29 09:43:54,359 INFO L168 Benchmark]: RCFGBuilder took 502.35 ms. Allocated memory is still 164.6 MB. Free memory was 127.4 MB in the beginning and 112.9 MB in the end (delta: 14.5 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2020-10-29 09:43:54,360 INFO L168 Benchmark]: TraceAbstraction took 21690.35 ms. Allocated memory was 164.6 MB in the beginning and 293.6 MB in the end (delta: 129.0 MB). Free memory was 112.5 MB in the beginning and 204.2 MB in the end (delta: -91.6 MB). Peak memory consumption was 38.5 MB. Max. memory is 8.0 GB. [2020-10-29 09:43:54,362 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 164.6 MB. Free memory is still 136.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 324.99 ms. Allocated memory is still 164.6 MB. Free memory was 138.9 MB in the beginning and 129.0 MB in the end (delta: 10.0 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 68.69 ms. Allocated memory is still 164.6 MB. Free memory was 129.0 MB in the beginning and 127.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 502.35 ms. Allocated memory is still 164.6 MB. Free memory was 127.4 MB in the beginning and 112.9 MB in the end (delta: 14.5 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 21690.35 ms. Allocated memory was 164.6 MB in the beginning and 293.6 MB in the end (delta: 129.0 MB). Free memory was 112.5 MB in the beginning and 204.2 MB in the end (delta: -91.6 MB). Peak memory consumption was 38.5 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 32 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 21.3s, OverallIterations: 10, TraceHistogramMax: 8, AutomataDifference: 13.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 180 SDtfs, 242 SDslu, 483 SDs, 0 SdLazy, 1456 SolverSat, 104 SolverUnsat, 3 SolverUnknown, 0 SolverNotchecked, 7.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 196 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 166 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 349 ImplicationChecksByTransitivity, 7.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=38occurred in iteration=9, 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, 10 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 37 PreInvPairs, 41 NumberOfFragments, 72 HoareAnnotationTreeSize, 37 FomulaSimplifications, 81 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 8 FomulaSimplificationsInter, 281 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 7.1s InterpolantComputationTime, 252 NumberOfCodeBlocks, 252 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 242 ConstructedInterpolants, 0 QuantifiedInterpolants, 109522 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 3 PerfectInterpolantSequences, 9/233 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...