/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem02_label28.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 06:44:53,152 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 06:44:53,155 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 06:44:53,183 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 06:44:53,183 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 06:44:53,185 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 06:44:53,186 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 06:44:53,188 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 06:44:53,190 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 06:44:53,191 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 06:44:53,192 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 06:44:53,193 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 06:44:53,194 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 06:44:53,195 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 06:44:53,196 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 06:44:53,197 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 06:44:53,198 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 06:44:53,199 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 06:44:53,201 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 06:44:53,203 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 06:44:53,204 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 06:44:53,205 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 06:44:53,206 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 06:44:53,207 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 06:44:53,210 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 06:44:53,210 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 06:44:53,210 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 06:44:53,211 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 06:44:53,212 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 06:44:53,213 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 06:44:53,213 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 06:44:53,214 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 06:44:53,217 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 06:44:53,218 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 06:44:53,222 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 06:44:53,222 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 06:44:53,223 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 06:44:53,223 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 06:44:53,223 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 06:44:53,225 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 06:44:53,226 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 06:44:53,228 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 06:44:53,282 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 06:44:53,282 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 06:44:53,286 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 06:44:53,287 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 06:44:53,287 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 06:44:53,287 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 06:44:53,287 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 06:44:53,288 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 06:44:53,288 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 06:44:53,288 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 06:44:53,288 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 06:44:53,288 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 06:44:53,288 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 06:44:53,292 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 06:44:53,292 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 06:44:53,292 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 06:44:53,292 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 06:44:53,292 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 06:44:53,294 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 06:44:53,294 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 06:44:53,294 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 06:44:53,294 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 06:44:53,294 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 06:44:53,295 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 06:44:53,295 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 06:44:53,295 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 06:44:53,295 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 06:44:53,295 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 06:44:53,296 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 06:44:53,296 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; [2020-09-25 06:44:53,758 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 06:44:53,776 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 06:44:53,782 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 06:44:53,784 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 06:44:53,786 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 06:44:53,788 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label28.c [2020-09-25 06:44:53,879 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f49affc0d/8dee1c2b15c142ce82bd9ef4c94af1b0/FLAGfcc70b101 [2020-09-25 06:44:54,550 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 06:44:54,554 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label28.c [2020-09-25 06:44:54,575 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f49affc0d/8dee1c2b15c142ce82bd9ef4c94af1b0/FLAGfcc70b101 [2020-09-25 06:44:54,754 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f49affc0d/8dee1c2b15c142ce82bd9ef4c94af1b0 [2020-09-25 06:44:54,766 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 06:44:54,772 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 06:44:54,773 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 06:44:54,773 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 06:44:54,777 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 06:44:54,778 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:44:54" (1/1) ... [2020-09-25 06:44:54,783 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21af3704 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:44:54, skipping insertion in model container [2020-09-25 06:44:54,783 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:44:54" (1/1) ... [2020-09-25 06:44:54,792 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 06:44:54,847 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 06:44:55,302 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:44:55,310 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 06:44:55,562 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:44:55,583 INFO L208 MainTranslator]: Completed translation [2020-09-25 06:44:55,583 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:44:55 WrapperNode [2020-09-25 06:44:55,584 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 06:44:55,584 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 06:44:55,585 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 06:44:55,585 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 06:44:55,598 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:44:55" (1/1) ... [2020-09-25 06:44:55,599 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:44:55" (1/1) ... [2020-09-25 06:44:55,616 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:44:55" (1/1) ... [2020-09-25 06:44:55,617 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:44:55" (1/1) ... [2020-09-25 06:44:55,655 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:44:55" (1/1) ... [2020-09-25 06:44:55,673 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:44:55" (1/1) ... [2020-09-25 06:44:55,677 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:44:55" (1/1) ... [2020-09-25 06:44:55,684 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 06:44:55,685 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 06:44:55,685 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 06:44:55,685 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 06:44:55,686 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:44:55" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 06:44:55,758 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 06:44:55,758 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 06:44:55,758 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 06:44:55,759 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 06:44:55,759 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 06:44:55,759 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 06:44:55,759 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 06:44:55,759 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 06:44:55,760 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 06:44:55,760 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 06:44:55,760 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 06:44:57,004 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 06:44:57,004 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 06:44:57,013 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:44:57 BoogieIcfgContainer [2020-09-25 06:44:57,013 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 06:44:57,015 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 06:44:57,015 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 06:44:57,018 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 06:44:57,019 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 06:44:54" (1/3) ... [2020-09-25 06:44:57,020 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@787ebca2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:44:57, skipping insertion in model container [2020-09-25 06:44:57,020 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:44:55" (2/3) ... [2020-09-25 06:44:57,020 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@787ebca2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:44:57, skipping insertion in model container [2020-09-25 06:44:57,021 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:44:57" (3/3) ... [2020-09-25 06:44:57,023 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label28.c [2020-09-25 06:44:57,034 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 06:44:57,046 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 06:44:57,068 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 06:44:57,103 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 06:44:57,103 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 06:44:57,103 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 06:44:57,104 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 06:44:57,104 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 06:44:57,104 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 06:44:57,104 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 06:44:57,104 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 06:44:57,136 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 06:44:57,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-09-25 06:44:57,165 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:44:57,166 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:44:57,167 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:44:57,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:44:57,175 INFO L82 PathProgramCache]: Analyzing trace with hash 1105966209, now seen corresponding path program 1 times [2020-09-25 06:44:57,186 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:44:57,187 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1793355088] [2020-09-25 06:44:57,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:44:57,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:44:57,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:57,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:58,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:58,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:58,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:59,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:59,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:01,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:02,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:45:02,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-09-25 06:45:02,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 06:45:02,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-25 06:45:02,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:45:02,486 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:45:02,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:45:02,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 06:45:02,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-09-25 06:45:02,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 06:45:02,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:45:02,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:45:02,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:02,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:45:02,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 06:45:02,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:45:02,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 06:45:02,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:45:02,739 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:45:02,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:45:02,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:45:02,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 06:45:02,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:45:02,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:45:02,824 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1793355088] [2020-09-25 06:45:02,826 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:45:02,827 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 06:45:02,828 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118720875] [2020-09-25 06:45:02,834 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 06:45:02,835 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:45:02,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 06:45:02,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 06:45:02,855 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 06:45:05,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:45:05,140 INFO L93 Difference]: Finished difference Result 1248 states and 1696 transitions. [2020-09-25 06:45:05,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 06:45:05,142 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 150 [2020-09-25 06:45:05,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:45:05,165 INFO L225 Difference]: With dead ends: 1248 [2020-09-25 06:45:05,165 INFO L226 Difference]: Without dead ends: 670 [2020-09-25 06:45:05,174 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:45:05,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 670 states. [2020-09-25 06:45:05,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 670 to 621. [2020-09-25 06:45:05,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 621 states. [2020-09-25 06:45:05,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 621 states to 621 states and 723 transitions. [2020-09-25 06:45:05,272 INFO L78 Accepts]: Start accepts. Automaton has 621 states and 723 transitions. Word has length 150 [2020-09-25 06:45:05,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:45:05,273 INFO L479 AbstractCegarLoop]: Abstraction has 621 states and 723 transitions. [2020-09-25 06:45:05,273 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 06:45:05,273 INFO L276 IsEmpty]: Start isEmpty. Operand 621 states and 723 transitions. [2020-09-25 06:45:05,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-09-25 06:45:05,281 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:45:05,282 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:45:05,282 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 06:45:05,282 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:45:05,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:45:05,283 INFO L82 PathProgramCache]: Analyzing trace with hash 93952890, now seen corresponding path program 1 times [2020-09-25 06:45:05,283 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:45:05,283 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [22075268] [2020-09-25 06:45:05,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:45:05,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:45:05,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:05,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:05,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:05,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:06,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:07,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:09,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:10,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:45:10,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-09-25 06:45:10,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 06:45:10,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-09-25 06:45:10,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:45:10,343 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:45:10,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:45:10,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 06:45:10,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-09-25 06:45:10,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:45:10,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:45:10,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:45:10,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:10,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:45:10,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 06:45:10,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:45:10,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 06:45:10,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:45:10,512 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:45:10,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:45:10,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:45:10,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:45:10,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:45:10,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 06:45:10,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:45:10,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:10,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:45:10,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 06:45:10,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:45:10,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 06:45:10,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:45:10,549 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:45:10,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:45:10,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:45:10,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 06:45:10,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:45:10,590 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:45:10,590 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [22075268] [2020-09-25 06:45:10,591 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:45:10,591 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 06:45:10,591 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91286022] [2020-09-25 06:45:10,593 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 06:45:10,594 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:45:10,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 06:45:10,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:45:10,594 INFO L87 Difference]: Start difference. First operand 621 states and 723 transitions. Second operand 5 states. [2020-09-25 06:45:12,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:45:12,414 INFO L93 Difference]: Finished difference Result 1533 states and 1847 transitions. [2020-09-25 06:45:12,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 06:45:12,415 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 167 [2020-09-25 06:45:12,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:45:12,430 INFO L225 Difference]: With dead ends: 1533 [2020-09-25 06:45:12,430 INFO L226 Difference]: Without dead ends: 934 [2020-09-25 06:45:12,433 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 06:45:12,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 934 states. [2020-09-25 06:45:12,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 934 to 924. [2020-09-25 06:45:12,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 924 states. [2020-09-25 06:45:12,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 924 states to 924 states and 1105 transitions. [2020-09-25 06:45:12,499 INFO L78 Accepts]: Start accepts. Automaton has 924 states and 1105 transitions. Word has length 167 [2020-09-25 06:45:12,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:45:12,500 INFO L479 AbstractCegarLoop]: Abstraction has 924 states and 1105 transitions. [2020-09-25 06:45:12,501 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 06:45:12,501 INFO L276 IsEmpty]: Start isEmpty. Operand 924 states and 1105 transitions. [2020-09-25 06:45:12,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2020-09-25 06:45:12,507 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:45:12,508 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:45:12,508 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 06:45:12,509 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:45:12,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:45:12,509 INFO L82 PathProgramCache]: Analyzing trace with hash -1954637387, now seen corresponding path program 1 times [2020-09-25 06:45:12,509 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:45:12,510 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [207688318] [2020-09-25 06:45:12,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:45:12,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:45:12,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:12,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:12,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:13,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:13,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:13,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:17,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:45:17,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 214 [2020-09-25 06:45:17,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 06:45:17,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-09-25 06:45:17,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:45:17,582 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:45:17,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:45:17,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 06:45:17,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 06:45:17,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:45:17,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:45:17,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:45:17,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:17,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:45:17,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 06:45:17,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:45:17,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 06:45:17,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:45:17,712 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:45:17,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:45:17,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:45:17,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:45:17,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:45:17,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 06:45:17,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:45:17,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:17,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:45:17,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 06:45:17,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:45:17,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 06:45:17,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:45:17,762 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:45:17,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:45:17,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:45:17,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 06:45:17,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:45:17,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 06:45:17,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:45:17,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:17,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:45:17,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 06:45:17,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:45:17,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-09-25 06:45:17,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:45:17,847 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:45:17,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:45:17,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:45:17,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 06:45:17,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:45:17,941 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 45 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 06:45:17,942 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [207688318] [2020-09-25 06:45:17,942 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:45:17,942 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 06:45:17,943 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272851571] [2020-09-25 06:45:17,943 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 06:45:17,944 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:45:17,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 06:45:17,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:45:17,944 INFO L87 Difference]: Start difference. First operand 924 states and 1105 transitions. Second operand 7 states. [2020-09-25 06:45:20,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:45:20,441 INFO L93 Difference]: Finished difference Result 2417 states and 3013 transitions. [2020-09-25 06:45:20,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 06:45:20,442 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 201 [2020-09-25 06:45:20,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:45:20,455 INFO L225 Difference]: With dead ends: 2417 [2020-09-25 06:45:20,455 INFO L226 Difference]: Without dead ends: 1515 [2020-09-25 06:45:20,459 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 06:45:20,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1515 states. [2020-09-25 06:45:20,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1515 to 1245. [2020-09-25 06:45:20,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1245 states. [2020-09-25 06:45:20,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1245 states to 1245 states and 1560 transitions. [2020-09-25 06:45:20,522 INFO L78 Accepts]: Start accepts. Automaton has 1245 states and 1560 transitions. Word has length 201 [2020-09-25 06:45:20,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:45:20,523 INFO L479 AbstractCegarLoop]: Abstraction has 1245 states and 1560 transitions. [2020-09-25 06:45:20,523 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 06:45:20,523 INFO L276 IsEmpty]: Start isEmpty. Operand 1245 states and 1560 transitions. [2020-09-25 06:45:20,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2020-09-25 06:45:20,530 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:45:20,530 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:45:20,530 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 06:45:20,530 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:45:20,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:45:20,531 INFO L82 PathProgramCache]: Analyzing trace with hash -1129148194, now seen corresponding path program 1 times [2020-09-25 06:45:20,531 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:45:20,532 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1538560317] [2020-09-25 06:45:20,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:45:20,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:45:20,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:20,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:20,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:20,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:23,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:23,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:25,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:45:25,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 219 [2020-09-25 06:45:25,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 06:45:25,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 06:45:25,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:45:25,573 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:45:25,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:45:25,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-09-25 06:45:25,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-09-25 06:45:25,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:45:25,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:45:25,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:45:25,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:25,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:45:25,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 06:45:25,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:45:25,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 06:45:25,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:45:25,785 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:45:25,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:45:25,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:45:25,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:45:25,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:45:25,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 06:45:25,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:45:25,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:25,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:45:25,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:45:25,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:45:25,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 06:45:25,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:45:25,821 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:45:25,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:45:25,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:45:25,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:45:25,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:45:25,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-25 06:45:25,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:45:25,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:25,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:45:25,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 06:45:25,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:45:25,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-25 06:45:25,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:45:25,869 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:45:25,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:45:25,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:45:25,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 06:45:25,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:45:25,948 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 40 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-09-25 06:45:25,948 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1538560317] [2020-09-25 06:45:25,948 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:45:25,949 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 06:45:25,949 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119680023] [2020-09-25 06:45:25,950 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 06:45:25,950 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:45:25,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 06:45:25,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:45:25,951 INFO L87 Difference]: Start difference. First operand 1245 states and 1560 transitions. Second operand 5 states. [2020-09-25 06:45:27,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:45:27,943 INFO L93 Difference]: Finished difference Result 3238 states and 4216 transitions. [2020-09-25 06:45:27,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 06:45:27,944 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 206 [2020-09-25 06:45:27,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:45:27,952 INFO L225 Difference]: With dead ends: 3238 [2020-09-25 06:45:27,952 INFO L226 Difference]: Without dead ends: 1487 [2020-09-25 06:45:27,959 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 06:45:27,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1487 states. [2020-09-25 06:45:27,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1487 to 1476. [2020-09-25 06:45:27,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1476 states. [2020-09-25 06:45:28,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1476 states to 1476 states and 1772 transitions. [2020-09-25 06:45:28,001 INFO L78 Accepts]: Start accepts. Automaton has 1476 states and 1772 transitions. Word has length 206 [2020-09-25 06:45:28,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:45:28,001 INFO L479 AbstractCegarLoop]: Abstraction has 1476 states and 1772 transitions. [2020-09-25 06:45:28,002 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 06:45:28,002 INFO L276 IsEmpty]: Start isEmpty. Operand 1476 states and 1772 transitions. [2020-09-25 06:45:28,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2020-09-25 06:45:28,009 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:45:28,009 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:45:28,009 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 06:45:28,010 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:45:28,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:45:28,010 INFO L82 PathProgramCache]: Analyzing trace with hash -1481533534, now seen corresponding path program 1 times [2020-09-25 06:45:28,010 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:45:28,011 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [908761971] [2020-09-25 06:45:28,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:45:28,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:45:28,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:28,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:28,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:28,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:29,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:33,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:45:33,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 227 [2020-09-25 06:45:33,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 06:45:33,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-25 06:45:33,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:45:33,052 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:45:33,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:45:33,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 06:45:33,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 06:45:33,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:45:33,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:45:33,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:45:33,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:33,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:45:33,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 06:45:33,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:45:33,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 06:45:33,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:45:33,145 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:45:33,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:45:33,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:45:33,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 06:45:33,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:45:33,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 06:45:33,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:45:33,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:33,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:45:33,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 06:45:33,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:45:33,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-09-25 06:45:33,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:45:33,237 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:45:33,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:45:33,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:45:33,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 06:45:33,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:45:33,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-09-25 06:45:33,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:45:33,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:33,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:45:33,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 06:45:33,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:45:33,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 06:45:33,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:45:33,291 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:45:33,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:45:33,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 06:45:33,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:45:33,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:45:33,330 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 43 proven. 10 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 06:45:33,330 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [908761971] [2020-09-25 06:45:33,331 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:45:33,331 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 06:45:33,331 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975746029] [2020-09-25 06:45:33,332 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 06:45:33,332 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:45:33,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 06:45:33,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:45:33,332 INFO L87 Difference]: Start difference. First operand 1476 states and 1772 transitions. Second operand 7 states. [2020-09-25 06:45:35,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:45:35,133 INFO L93 Difference]: Finished difference Result 3711 states and 4574 transitions. [2020-09-25 06:45:35,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 06:45:35,134 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 214 [2020-09-25 06:45:35,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:45:35,144 INFO L225 Difference]: With dead ends: 3711 [2020-09-25 06:45:35,144 INFO L226 Difference]: Without dead ends: 2257 [2020-09-25 06:45:35,149 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-25 06:45:35,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2257 states. [2020-09-25 06:45:35,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2257 to 2093. [2020-09-25 06:45:35,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2093 states. [2020-09-25 06:45:35,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2093 states to 2093 states and 2512 transitions. [2020-09-25 06:45:35,202 INFO L78 Accepts]: Start accepts. Automaton has 2093 states and 2512 transitions. Word has length 214 [2020-09-25 06:45:35,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:45:35,203 INFO L479 AbstractCegarLoop]: Abstraction has 2093 states and 2512 transitions. [2020-09-25 06:45:35,203 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 06:45:35,203 INFO L276 IsEmpty]: Start isEmpty. Operand 2093 states and 2512 transitions. [2020-09-25 06:45:35,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2020-09-25 06:45:35,211 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:45:35,212 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:45:35,212 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 06:45:35,212 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:45:35,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:45:35,213 INFO L82 PathProgramCache]: Analyzing trace with hash 1300662903, now seen corresponding path program 1 times [2020-09-25 06:45:35,213 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:45:35,213 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [496929156] [2020-09-25 06:45:35,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:45:35,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:45:35,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:35,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:35,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:35,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:37,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:37,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:37,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:37,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:38,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:38,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:38,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:39,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:40,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:45:40,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 247 [2020-09-25 06:45:40,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-25 06:45:40,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 06:45:40,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:45:40,246 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:45:40,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:45:40,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 82 [2020-09-25 06:45:40,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 164 [2020-09-25 06:45:40,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:45:40,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:45:40,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:45:40,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:40,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:45:40,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 06:45:40,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:45:40,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 06:45:40,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:45:40,360 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:45:40,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:45:40,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:45:40,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:45:40,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:45:40,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 06:45:40,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:45:40,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:40,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:45:40,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:45:40,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:45:40,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 06:45:40,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:45:40,393 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:45:40,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:45:40,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:45:40,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:45:40,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:45:40,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-25 06:45:40,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:45:40,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:40,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:45:40,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 06:45:40,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:45:40,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 06:45:40,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:45:40,424 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:45:40,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:45:40,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:45:40,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 06:45:40,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:45:40,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-25 06:45:40,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:45:40,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:40,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:40,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:45:40,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 06:45:40,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:45:40,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-09-25 06:45:40,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:45:40,493 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:45:40,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:45:40,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:45:40,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 06:45:40,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:45:40,558 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 73 proven. 13 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-09-25 06:45:40,558 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [496929156] [2020-09-25 06:45:40,559 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:45:40,559 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 06:45:40,559 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399515243] [2020-09-25 06:45:40,560 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 06:45:40,560 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:45:40,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 06:45:40,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:45:40,560 INFO L87 Difference]: Start difference. First operand 2093 states and 2512 transitions. Second operand 7 states. [2020-09-25 06:45:42,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:45:42,302 INFO L93 Difference]: Finished difference Result 4396 states and 5330 transitions. [2020-09-25 06:45:42,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 06:45:42,303 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 232 [2020-09-25 06:45:42,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:45:42,316 INFO L225 Difference]: With dead ends: 4396 [2020-09-25 06:45:42,317 INFO L226 Difference]: Without dead ends: 2003 [2020-09-25 06:45:42,325 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-09-25 06:45:42,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2003 states. [2020-09-25 06:45:42,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2003 to 1769. [2020-09-25 06:45:42,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1769 states. [2020-09-25 06:45:42,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1769 states to 1769 states and 2002 transitions. [2020-09-25 06:45:42,471 INFO L78 Accepts]: Start accepts. Automaton has 1769 states and 2002 transitions. Word has length 232 [2020-09-25 06:45:42,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:45:42,473 INFO L479 AbstractCegarLoop]: Abstraction has 1769 states and 2002 transitions. [2020-09-25 06:45:42,474 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 06:45:42,474 INFO L276 IsEmpty]: Start isEmpty. Operand 1769 states and 2002 transitions. [2020-09-25 06:45:42,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2020-09-25 06:45:42,482 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:45:42,483 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:45:42,483 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 06:45:42,483 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:45:42,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:45:42,484 INFO L82 PathProgramCache]: Analyzing trace with hash 878834869, now seen corresponding path program 1 times [2020-09-25 06:45:42,484 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:45:42,484 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1889275698] [2020-09-25 06:45:42,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:45:42,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:45:42,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:42,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:42,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:44,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking...