/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=0.4 --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_label03.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 05:35:04,646 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 05:35:04,650 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 05:35:04,695 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 05:35:04,696 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 05:35:04,703 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 05:35:04,706 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 05:35:04,710 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 05:35:04,712 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 05:35:04,715 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 05:35:04,716 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 05:35:04,718 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 05:35:04,718 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 05:35:04,721 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 05:35:04,725 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 05:35:04,727 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 05:35:04,729 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 05:35:04,730 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 05:35:04,732 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 05:35:04,742 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 05:35:04,745 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 05:35:04,746 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 05:35:04,747 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 05:35:04,748 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 05:35:04,760 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 05:35:04,761 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 05:35:04,761 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 05:35:04,767 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 05:35:04,768 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 05:35:04,769 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 05:35:04,769 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 05:35:04,770 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 05:35:04,771 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 05:35:04,772 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 05:35:04,773 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 05:35:04,773 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 05:35:04,774 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 05:35:04,774 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 05:35:04,774 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 05:35:04,775 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 05:35:04,776 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 05:35:04,777 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 05:35:04,802 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 05:35:04,803 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 05:35:04,804 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 05:35:04,804 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 05:35:04,804 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 05:35:04,805 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 05:35:04,805 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 05:35:04,805 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 05:35:04,805 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 05:35:04,805 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 05:35:04,805 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 05:35:04,806 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 05:35:04,806 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 05:35:04,806 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 05:35:04,806 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 05:35:04,806 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 05:35:04,807 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 05:35:04,807 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 05:35:04,807 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 05:35:04,807 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 05:35:04,807 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 05:35:04,808 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 05:35:04,808 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 05:35:04,808 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 05:35:04,808 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 05:35:04,809 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 05:35:04,809 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 05:35:04,809 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 05:35:04,809 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 05:35:04,809 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=0.4;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=0.4;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=0.4;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=0.4;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=0.4;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=0.4;log-additional-information=true; [2020-09-25 05:35:05,249 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 05:35:05,273 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 05:35:05,278 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 05:35:05,279 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 05:35:05,280 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 05:35:05,281 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label03.c [2020-09-25 05:35:05,353 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8b1018b53/d0ffa3a2656644c4a7399c275ac1efa7/FLAG174397686 [2020-09-25 05:35:06,016 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 05:35:06,017 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label03.c [2020-09-25 05:35:06,050 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8b1018b53/d0ffa3a2656644c4a7399c275ac1efa7/FLAG174397686 [2020-09-25 05:35:06,200 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8b1018b53/d0ffa3a2656644c4a7399c275ac1efa7 [2020-09-25 05:35:06,215 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 05:35:06,222 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 05:35:06,226 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 05:35:06,227 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 05:35:06,231 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 05:35:06,232 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:35:06" (1/1) ... [2020-09-25 05:35:06,238 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22f7f464 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:35:06, skipping insertion in model container [2020-09-25 05:35:06,238 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:35:06" (1/1) ... [2020-09-25 05:35:06,249 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 05:35:06,304 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 05:35:06,780 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:35:06,787 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 05:35:07,011 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:35:07,035 INFO L208 MainTranslator]: Completed translation [2020-09-25 05:35:07,036 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:35:07 WrapperNode [2020-09-25 05:35:07,036 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 05:35:07,037 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 05:35:07,037 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 05:35:07,037 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 05:35:07,056 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:35:07" (1/1) ... [2020-09-25 05:35:07,057 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:35:07" (1/1) ... [2020-09-25 05:35:07,076 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:35:07" (1/1) ... [2020-09-25 05:35:07,077 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:35:07" (1/1) ... [2020-09-25 05:35:07,127 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:35:07" (1/1) ... [2020-09-25 05:35:07,140 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:35:07" (1/1) ... [2020-09-25 05:35:07,145 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:35:07" (1/1) ... [2020-09-25 05:35:07,153 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 05:35:07,153 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 05:35:07,153 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 05:35:07,154 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 05:35:07,155 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:35:07" (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 05:35:07,236 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 05:35:07,237 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 05:35:07,237 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 05:35:07,237 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 05:35:07,237 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 05:35:07,238 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 05:35:07,238 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 05:35:07,238 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 05:35:07,238 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 05:35:07,238 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 05:35:07,239 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 05:35:08,665 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 05:35:08,665 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 05:35:08,676 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:35:08 BoogieIcfgContainer [2020-09-25 05:35:08,677 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 05:35:08,678 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 05:35:08,678 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 05:35:08,682 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 05:35:08,682 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 05:35:06" (1/3) ... [2020-09-25 05:35:08,684 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@566d10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:35:08, skipping insertion in model container [2020-09-25 05:35:08,684 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:35:07" (2/3) ... [2020-09-25 05:35:08,684 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@566d10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:35:08, skipping insertion in model container [2020-09-25 05:35:08,685 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:35:08" (3/3) ... [2020-09-25 05:35:08,687 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label03.c [2020-09-25 05:35:08,700 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 05:35:08,712 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 05:35:08,736 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 05:35:08,772 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 05:35:08,772 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 05:35:08,772 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 05:35:08,772 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 05:35:08,772 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 05:35:08,773 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 05:35:08,773 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 05:35:08,773 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 05:35:08,810 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 05:35:08,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-09-25 05:35:08,832 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:35:08,834 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, 1, 1, 1, 1, 1] [2020-09-25 05:35:08,834 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:35:08,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:35:08,841 INFO L82 PathProgramCache]: Analyzing trace with hash 1547939106, now seen corresponding path program 1 times [2020-09-25 05:35:08,852 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:35:08,852 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1527994987] [2020-09-25 05:35:08,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:35:09,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:35:09,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:09,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:09,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:10,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:11,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:11,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:12,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:13,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:13,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:14,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:14,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:35:14,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-09-25 05:35:14,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 05:35:14,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-09-25 05:35:14,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:35:14,153 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:35:14,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:35:14,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 05:35:14,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 146 [2020-09-25 05:35:14,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 05:35:14,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:35:14,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:35:14,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:14,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:35:14,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 05:35:14,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:35:14,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-09-25 05:35:14,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:35:14,395 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:35:14,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:35:14,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:35:14,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 05:35:14,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:35:14,486 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 05:35:14,488 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1527994987] [2020-09-25 05:35:14,490 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:35:14,490 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 05:35:14,491 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635486636] [2020-09-25 05:35:14,500 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 05:35:14,500 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:35:14,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 05:35:14,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 05:35:14,521 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 05:35:17,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:35:17,284 INFO L93 Difference]: Finished difference Result 1396 states and 1850 transitions. [2020-09-25 05:35:17,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 05:35:17,289 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 155 [2020-09-25 05:35:17,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:35:17,329 INFO L225 Difference]: With dead ends: 1396 [2020-09-25 05:35:17,329 INFO L226 Difference]: Without dead ends: 788 [2020-09-25 05:35:17,341 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 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 05:35:17,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 788 states. [2020-09-25 05:35:17,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 788 to 665. [2020-09-25 05:35:17,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 665 states. [2020-09-25 05:35:17,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 665 states to 665 states and 813 transitions. [2020-09-25 05:35:17,453 INFO L78 Accepts]: Start accepts. Automaton has 665 states and 813 transitions. Word has length 155 [2020-09-25 05:35:17,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:35:17,456 INFO L479 AbstractCegarLoop]: Abstraction has 665 states and 813 transitions. [2020-09-25 05:35:17,456 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 05:35:17,457 INFO L276 IsEmpty]: Start isEmpty. Operand 665 states and 813 transitions. [2020-09-25 05:35:17,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-09-25 05:35:17,465 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:35:17,466 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:35:17,466 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 05:35:17,467 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:35:17,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:35:17,467 INFO L82 PathProgramCache]: Analyzing trace with hash -1141989810, now seen corresponding path program 1 times [2020-09-25 05:35:17,468 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:35:17,468 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1837325123] [2020-09-25 05:35:17,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:35:17,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:35:17,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:17,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:17,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:17,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:19,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:19,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:20,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:20,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:20,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:21,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:22,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:35:22,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-09-25 05:35:22,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 05:35:22,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-09-25 05:35:22,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:35:22,535 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:35:22,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:35:22,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-09-25 05:35:22,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-09-25 05:35:22,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:35:22,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:35:22,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:35:22,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:22,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:35:22,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 05:35:22,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:35:22,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 05:35:22,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:35:22,726 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:35:22,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:35:22,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:35:22,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:35:22,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 05:35:22,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 05:35:22,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:35:22,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:22,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:35:22,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 05:35:22,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:35:22,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 05:35:22,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:35:22,779 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:35:22,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:35:22,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:35:22,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-25 05:35:22,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:35:22,859 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:35:22,859 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1837325123] [2020-09-25 05:35:22,860 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:35:22,860 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 05:35:22,860 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617481569] [2020-09-25 05:35:22,862 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:35:22,863 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:35:22,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:35:22,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:35:22,864 INFO L87 Difference]: Start difference. First operand 665 states and 813 transitions. Second operand 5 states. [2020-09-25 05:35:24,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:35:24,543 INFO L93 Difference]: Finished difference Result 1623 states and 2079 transitions. [2020-09-25 05:35:24,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:35:24,549 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 173 [2020-09-25 05:35:24,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:35:24,558 INFO L225 Difference]: With dead ends: 1623 [2020-09-25 05:35:24,558 INFO L226 Difference]: Without dead ends: 980 [2020-09-25 05:35:24,562 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 05:35:24,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 980 states. [2020-09-25 05:35:24,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 980 to 816. [2020-09-25 05:35:24,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 816 states. [2020-09-25 05:35:24,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 816 states to 816 states and 1043 transitions. [2020-09-25 05:35:24,621 INFO L78 Accepts]: Start accepts. Automaton has 816 states and 1043 transitions. Word has length 173 [2020-09-25 05:35:24,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:35:24,622 INFO L479 AbstractCegarLoop]: Abstraction has 816 states and 1043 transitions. [2020-09-25 05:35:24,622 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:35:24,622 INFO L276 IsEmpty]: Start isEmpty. Operand 816 states and 1043 transitions. [2020-09-25 05:35:24,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-09-25 05:35:24,627 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:35:24,627 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:35:24,628 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 05:35:24,628 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:35:24,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:35:24,629 INFO L82 PathProgramCache]: Analyzing trace with hash 608489, now seen corresponding path program 1 times [2020-09-25 05:35:24,629 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:35:24,629 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2103779610] [2020-09-25 05:35:24,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:35:24,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:35:24,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:24,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:25,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:26,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:28,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:28,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:29,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:29,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:35:29,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-09-25 05:35:29,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 05:35:29,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 05:35:29,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:35:29,664 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:35:29,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:35:29,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-09-25 05:35:29,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-09-25 05:35:29,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:35:29,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:35:29,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:35:29,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:29,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:35:29,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 05:35:29,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:35:29,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 05:35:29,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:35:29,849 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:35:29,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:35:29,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:35:29,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:35:29,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:35:29,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 05:35:29,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:35:29,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:29,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:35:29,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 05:35:29,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:35:29,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-25 05:35:29,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:35:29,923 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:35:29,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:35:29,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:35:29,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 05:35:29,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:35:29,991 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:35:29,991 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2103779610] [2020-09-25 05:35:29,991 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:35:29,992 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 05:35:29,992 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238372245] [2020-09-25 05:35:29,993 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:35:29,993 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:35:29,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:35:29,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:35:29,994 INFO L87 Difference]: Start difference. First operand 816 states and 1043 transitions. Second operand 5 states. [2020-09-25 05:35:32,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:35:32,520 INFO L93 Difference]: Finished difference Result 2102 states and 2820 transitions. [2020-09-25 05:35:32,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:35:32,521 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 181 [2020-09-25 05:35:32,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:35:32,529 INFO L225 Difference]: With dead ends: 2102 [2020-09-25 05:35:32,530 INFO L226 Difference]: Without dead ends: 1308 [2020-09-25 05:35:32,534 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 05:35:32,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1308 states. [2020-09-25 05:35:32,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1308 to 1272. [2020-09-25 05:35:32,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1272 states. [2020-09-25 05:35:32,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1272 states to 1272 states and 1561 transitions. [2020-09-25 05:35:32,580 INFO L78 Accepts]: Start accepts. Automaton has 1272 states and 1561 transitions. Word has length 181 [2020-09-25 05:35:32,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:35:32,581 INFO L479 AbstractCegarLoop]: Abstraction has 1272 states and 1561 transitions. [2020-09-25 05:35:32,581 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:35:32,581 INFO L276 IsEmpty]: Start isEmpty. Operand 1272 states and 1561 transitions. [2020-09-25 05:35:32,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-09-25 05:35:32,588 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:35:32,588 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:35:32,589 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 05:35:32,589 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:35:32,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:35:32,589 INFO L82 PathProgramCache]: Analyzing trace with hash 835170522, now seen corresponding path program 1 times [2020-09-25 05:35:32,590 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:35:32,590 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1279016655] [2020-09-25 05:35:32,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:35:32,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:35:32,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:32,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:33,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:33,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:34,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:34,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:36,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:37,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:37,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:37,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:37,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:35:37,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 204 [2020-09-25 05:35:37,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 05:35:37,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 05:35:37,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:35:37,638 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:35:37,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:35:37,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 61 [2020-09-25 05:35:37,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-09-25 05:35:37,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:35:37,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:35:37,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:35:37,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:37,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:35:37,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 05:35:37,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:35:37,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 05:35:37,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:35:37,780 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:35:37,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:35:37,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:35:37,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:35:37,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 05:35:37,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 05:35:37,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:35:37,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:37,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:35:37,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 05:35:37,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:35:37,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-09-25 05:35:37,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:35:37,855 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:35:37,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:35:37,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:35:37,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-25 05:35:37,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:35:37,917 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 26 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:35:37,919 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1279016655] [2020-09-25 05:35:37,920 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:35:37,920 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 05:35:37,920 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919086514] [2020-09-25 05:35:37,921 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:35:37,921 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:35:37,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:35:37,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:35:37,922 INFO L87 Difference]: Start difference. First operand 1272 states and 1561 transitions. Second operand 5 states. [2020-09-25 05:35:39,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:35:39,845 INFO L93 Difference]: Finished difference Result 3032 states and 3899 transitions. [2020-09-25 05:35:39,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:35:39,845 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 193 [2020-09-25 05:35:39,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:35:39,856 INFO L225 Difference]: With dead ends: 3032 [2020-09-25 05:35:39,857 INFO L226 Difference]: Without dead ends: 1782 [2020-09-25 05:35:39,862 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 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 05:35:39,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1782 states. [2020-09-25 05:35:39,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1782 to 1578. [2020-09-25 05:35:39,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1578 states. [2020-09-25 05:35:39,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1578 states to 1578 states and 1918 transitions. [2020-09-25 05:35:39,931 INFO L78 Accepts]: Start accepts. Automaton has 1578 states and 1918 transitions. Word has length 193 [2020-09-25 05:35:39,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:35:39,931 INFO L479 AbstractCegarLoop]: Abstraction has 1578 states and 1918 transitions. [2020-09-25 05:35:39,932 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:35:39,932 INFO L276 IsEmpty]: Start isEmpty. Operand 1578 states and 1918 transitions. [2020-09-25 05:35:39,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-09-25 05:35:39,940 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:35:39,941 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, 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] [2020-09-25 05:35:39,941 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 05:35:39,941 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:35:39,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:35:39,942 INFO L82 PathProgramCache]: Analyzing trace with hash -1504338062, now seen corresponding path program 1 times [2020-09-25 05:35:39,942 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:35:39,942 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1041466356] [2020-09-25 05:35:39,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:35:39,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:35:40,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:40,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:40,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:40,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:44,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:44,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:44,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:35:44,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 225 [2020-09-25 05:35:44,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 05:35:44,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 05:35:44,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:35:44,989 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:35:44,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:35:44,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-09-25 05:35:44,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-09-25 05:35:44,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:35:45,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:35:45,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:35:45,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:45,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:35:45,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 05:35:45,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:35:45,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 05:35:45,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:35:45,110 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:35:45,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:35:45,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:35:45,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:35:45,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:35:45,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 05:35:45,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:35:45,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:45,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:35:45,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 05:35:45,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:35:45,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 05:35:45,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:35:45,143 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:35:45,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:35:45,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:35:45,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:35:45,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:35:45,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 05:35:45,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:35:45,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:45,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:35:45,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 05:35:45,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:35:45,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-25 05:35:45,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:35:45,183 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:35:45,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:35:45,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:35:45,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-25 05:35:45,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:35:45,229 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 44 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-25 05:35:45,229 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1041466356] [2020-09-25 05:35:45,229 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:35:45,229 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 05:35:45,230 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74328352] [2020-09-25 05:35:45,230 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:35:45,230 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:35:45,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:35:45,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:35:45,231 INFO L87 Difference]: Start difference. First operand 1578 states and 1918 transitions. Second operand 5 states. [2020-09-25 05:35:47,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:35:47,495 INFO L93 Difference]: Finished difference Result 4059 states and 5108 transitions. [2020-09-25 05:35:47,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:35:47,499 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 212 [2020-09-25 05:35:47,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:35:47,514 INFO L225 Difference]: With dead ends: 4059 [2020-09-25 05:35:47,515 INFO L226 Difference]: Without dead ends: 2503 [2020-09-25 05:35:47,521 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 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 05:35:47,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2503 states. [2020-09-25 05:35:47,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2503 to 2341. [2020-09-25 05:35:47,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2341 states. [2020-09-25 05:35:47,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2341 states to 2341 states and 2815 transitions. [2020-09-25 05:35:47,592 INFO L78 Accepts]: Start accepts. Automaton has 2341 states and 2815 transitions. Word has length 212 [2020-09-25 05:35:47,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:35:47,592 INFO L479 AbstractCegarLoop]: Abstraction has 2341 states and 2815 transitions. [2020-09-25 05:35:47,593 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:35:47,593 INFO L276 IsEmpty]: Start isEmpty. Operand 2341 states and 2815 transitions. [2020-09-25 05:35:47,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2020-09-25 05:35:47,604 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:35:47,604 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2020-09-25 05:35:47,604 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 05:35:47,604 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:35:47,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:35:47,605 INFO L82 PathProgramCache]: Analyzing trace with hash 556957630, now seen corresponding path program 1 times [2020-09-25 05:35:47,605 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:35:47,605 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [552382574] [2020-09-25 05:35:47,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:35:47,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:35:47,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:47,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:47,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:47,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:48,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:48,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:49,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:49,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:52,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:35:52,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 256 [2020-09-25 05:35:52,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 05:35:52,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5044 [2020-09-25 05:35:52,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:35:52,676 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:35:52,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:35:52,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 58 [2020-09-25 05:35:52,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-09-25 05:35:52,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:35:52,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:35:52,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:35:52,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:52,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:35:52,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 05:35:52,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:35:52,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 05:35:52,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:35:52,792 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:35:52,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:35:52,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:35:52,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:35:52,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:35:52,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 05:35:52,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:35:52,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:52,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:35:52,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 05:35:52,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:35:52,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 05:35:52,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:35:52,830 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:35:52,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:35:52,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:35:52,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:35:52,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:35:52,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 05:35:52,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:35:52,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:52,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:35:52,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 05:35:52,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:35:52,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 05:35:52,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:35:52,854 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:35:52,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:35:52,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:35:52,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-25 05:35:52,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:35:52,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-09-25 05:35:52,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:35:52,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:52,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:35:52,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 05:35:52,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:35:52,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-09-25 05:35:52,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:35:52,962 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:35:52,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:35:52,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 05:35:52,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 05:35:52,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:35:53,034 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 92 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 05:35:53,034 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [552382574] [2020-09-25 05:35:53,035 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:35:53,036 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 05:35:53,036 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628112502] [2020-09-25 05:35:53,037 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 05:35:53,037 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:35:53,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 05:35:53,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 05:35:53,038 INFO L87 Difference]: Start difference. First operand 2341 states and 2815 transitions. Second operand 7 states. [2020-09-25 05:35:55,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:35:55,394 INFO L93 Difference]: Finished difference Result 5210 states and 6387 transitions. [2020-09-25 05:35:55,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 05:35:55,398 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 241 [2020-09-25 05:35:55,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:35:55,398 INFO L225 Difference]: With dead ends: 5210 [2020-09-25 05:35:55,399 INFO L226 Difference]: Without dead ends: 0 [2020-09-25 05:35:55,414 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 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 05:35:55,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-25 05:35:55,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-25 05:35:55,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-25 05:35:55,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-25 05:35:55,416 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 241 [2020-09-25 05:35:55,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:35:55,417 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-25 05:35:55,417 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 05:35:55,417 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-25 05:35:55,417 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-25 05:35:55,418 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 05:35:55,420 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.