/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=0.2 --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/Problem10_label45.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 04:30:50,816 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 04:30:50,820 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 04:30:50,866 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 04:30:50,866 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 04:30:50,875 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 04:30:50,877 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 04:30:50,881 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 04:30:50,883 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 04:30:50,887 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 04:30:50,888 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 04:30:50,889 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 04:30:50,890 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 04:30:50,893 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 04:30:50,896 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 04:30:50,898 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 04:30:50,900 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 04:30:50,901 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 04:30:50,903 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 04:30:50,911 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 04:30:50,914 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 04:30:50,915 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 04:30:50,916 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 04:30:50,917 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 04:30:50,929 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 04:30:50,929 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 04:30:50,929 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 04:30:50,930 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 04:30:50,932 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 04:30:50,940 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 04:30:50,940 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 04:30:50,941 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 04:30:50,944 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 04:30:50,945 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 04:30:50,946 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 04:30:50,946 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 04:30:50,947 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 04:30:50,947 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 04:30:50,947 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 04:30:50,949 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 04:30:50,949 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 04:30:50,951 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 04:30:50,987 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 04:30:50,987 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 04:30:50,988 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 04:30:50,989 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 04:30:50,989 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 04:30:50,989 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 04:30:50,989 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 04:30:50,990 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 04:30:50,990 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 04:30:50,990 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 04:30:50,990 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 04:30:50,990 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 04:30:50,991 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 04:30:50,991 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 04:30:50,991 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 04:30:50,991 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 04:30:50,991 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 04:30:50,992 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 04:30:50,992 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 04:30:50,992 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 04:30:50,992 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 04:30:50,992 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 04:30:50,993 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 04:30:50,993 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 04:30:50,993 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 04:30:50,993 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 04:30:50,993 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 04:30:50,994 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 04:30:50,994 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 04:30:50,994 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=0.2;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=0.2;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=0.2;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=0.2;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=0.2;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=0.2;log-additional-information=true; [2020-09-25 04:30:51,432 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 04:30:51,450 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 04:30:51,454 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 04:30:51,456 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 04:30:51,457 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 04:30:51,458 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label45.c [2020-09-25 04:30:51,554 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ce060f757/b2c07778059b4be8927bad9e52a7289a/FLAG510e49647 [2020-09-25 04:30:52,226 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 04:30:52,227 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label45.c [2020-09-25 04:30:52,248 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ce060f757/b2c07778059b4be8927bad9e52a7289a/FLAG510e49647 [2020-09-25 04:30:52,452 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ce060f757/b2c07778059b4be8927bad9e52a7289a [2020-09-25 04:30:52,466 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 04:30:52,472 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 04:30:52,474 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 04:30:52,474 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 04:30:52,478 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 04:30:52,480 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:30:52" (1/1) ... [2020-09-25 04:30:52,484 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42dfe0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:30:52, skipping insertion in model container [2020-09-25 04:30:52,484 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:30:52" (1/1) ... [2020-09-25 04:30:52,493 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 04:30:52,545 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 04:30:53,056 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:30:53,062 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 04:30:53,303 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:30:53,324 INFO L208 MainTranslator]: Completed translation [2020-09-25 04:30:53,324 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:30:53 WrapperNode [2020-09-25 04:30:53,325 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 04:30:53,325 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 04:30:53,326 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 04:30:53,326 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 04:30:53,344 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:30:53" (1/1) ... [2020-09-25 04:30:53,344 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:30:53" (1/1) ... [2020-09-25 04:30:53,363 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:30:53" (1/1) ... [2020-09-25 04:30:53,364 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:30:53" (1/1) ... [2020-09-25 04:30:53,402 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:30:53" (1/1) ... [2020-09-25 04:30:53,430 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:30:53" (1/1) ... [2020-09-25 04:30:53,437 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:30:53" (1/1) ... [2020-09-25 04:30:53,447 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 04:30:53,447 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 04:30:53,448 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 04:30:53,448 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 04:30:53,449 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:30:53" (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 04:30:53,541 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 04:30:53,541 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 04:30:53,542 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 04:30:53,542 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 04:30:53,542 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 04:30:53,542 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 04:30:53,542 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 04:30:53,543 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 04:30:53,543 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 04:30:53,543 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 04:30:53,543 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 04:30:55,178 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 04:30:55,179 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 04:30:55,196 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:30:55 BoogieIcfgContainer [2020-09-25 04:30:55,197 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 04:30:55,200 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 04:30:55,200 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 04:30:55,204 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 04:30:55,204 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 04:30:52" (1/3) ... [2020-09-25 04:30:55,206 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e40405c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:30:55, skipping insertion in model container [2020-09-25 04:30:55,206 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:30:53" (2/3) ... [2020-09-25 04:30:55,207 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e40405c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:30:55, skipping insertion in model container [2020-09-25 04:30:55,207 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:30:55" (3/3) ... [2020-09-25 04:30:55,213 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label45.c [2020-09-25 04:30:55,225 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 04:30:55,237 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 04:30:55,259 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 04:30:55,292 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 04:30:55,292 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 04:30:55,293 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 04:30:55,293 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 04:30:55,293 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 04:30:55,293 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 04:30:55,293 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 04:30:55,294 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 04:30:55,326 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 04:30:55,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-09-25 04:30:55,337 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:30:55,339 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] [2020-09-25 04:30:55,339 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:30:55,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:30:55,348 INFO L82 PathProgramCache]: Analyzing trace with hash -1037847345, now seen corresponding path program 1 times [2020-09-25 04:30:55,360 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:30:55,361 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1001699951] [2020-09-25 04:30:55,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:30:55,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:55,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:55,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:56,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:56,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:56,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-09-25 04:30:56,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 04:30:56,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1015 [2020-09-25 04:30:56,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:56,614 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:56,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:30:56,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 04:30:56,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-09-25 04:30:56,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 04:30:56,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:30:56,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:56,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:56,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:56,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:30:56,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:30:56,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-25 04:30:56,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:56,825 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:56,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:30:56,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:30:56,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 04:30:56,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:30:56,853 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 04:30:56,855 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1001699951] [2020-09-25 04:30:56,857 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:30:56,858 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 04:30:56,859 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254947914] [2020-09-25 04:30:56,868 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 04:30:56,869 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:30:56,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 04:30:56,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 04:30:56,892 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 04:30:59,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:30:59,098 INFO L93 Difference]: Finished difference Result 1160 states and 1585 transitions. [2020-09-25 04:30:59,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 04:30:59,101 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 57 [2020-09-25 04:30:59,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:30:59,128 INFO L225 Difference]: With dead ends: 1160 [2020-09-25 04:30:59,129 INFO L226 Difference]: Without dead ends: 631 [2020-09-25 04:30:59,140 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:30:59,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 631 states. [2020-09-25 04:30:59,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 631 to 576. [2020-09-25 04:30:59,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 576 states. [2020-09-25 04:30:59,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 708 transitions. [2020-09-25 04:30:59,241 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 708 transitions. Word has length 57 [2020-09-25 04:30:59,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:30:59,242 INFO L479 AbstractCegarLoop]: Abstraction has 576 states and 708 transitions. [2020-09-25 04:30:59,242 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 04:30:59,242 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 708 transitions. [2020-09-25 04:30:59,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-09-25 04:30:59,251 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:30:59,252 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, 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] [2020-09-25 04:30:59,252 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 04:30:59,253 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:30:59,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:30:59,253 INFO L82 PathProgramCache]: Analyzing trace with hash -1358485705, now seen corresponding path program 1 times [2020-09-25 04:30:59,254 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:30:59,254 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [270453856] [2020-09-25 04:30:59,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:30:59,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:59,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:59,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:59,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:00,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:00,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:00,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:04,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:04,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-09-25 04:31:04,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 04:31:04,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 04:31:04,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:04,298 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:04,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:31:04,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 04:31:04,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-25 04:31:04,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:04,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:31:04,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:04,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:04,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:04,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:31:04,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:31:04,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 04:31:04,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:04,405 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:04,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:31:04,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:31:04,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 04:31:04,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:04,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 04:31:04,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:04,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:04,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:04,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 04:31:04,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:31:04,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 169 [2020-09-25 04:31:04,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:04,618 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:04,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:31:04,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 04:31:04,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 04:31:04,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:04,750 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:31:04,750 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [270453856] [2020-09-25 04:31:04,751 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:31:04,751 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 04:31:04,751 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847605153] [2020-09-25 04:31:04,754 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 04:31:04,754 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:31:04,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 04:31:04,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:31:04,755 INFO L87 Difference]: Start difference. First operand 576 states and 708 transitions. Second operand 7 states. [2020-09-25 04:31:06,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:31:06,848 INFO L93 Difference]: Finished difference Result 1330 states and 1655 transitions. [2020-09-25 04:31:06,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 04:31:06,850 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 140 [2020-09-25 04:31:06,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:31:06,856 INFO L225 Difference]: With dead ends: 1330 [2020-09-25 04:31:06,856 INFO L226 Difference]: Without dead ends: 769 [2020-09-25 04:31:06,859 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-09-25 04:31:06,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 769 states. [2020-09-25 04:31:06,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 769 to 731. [2020-09-25 04:31:06,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 731 states. [2020-09-25 04:31:06,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 731 states to 731 states and 902 transitions. [2020-09-25 04:31:06,904 INFO L78 Accepts]: Start accepts. Automaton has 731 states and 902 transitions. Word has length 140 [2020-09-25 04:31:06,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:31:06,905 INFO L479 AbstractCegarLoop]: Abstraction has 731 states and 902 transitions. [2020-09-25 04:31:06,905 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 04:31:06,905 INFO L276 IsEmpty]: Start isEmpty. Operand 731 states and 902 transitions. [2020-09-25 04:31:06,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-09-25 04:31:06,917 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:31:06,917 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, 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] [2020-09-25 04:31:06,917 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 04:31:06,917 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:31:06,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:31:06,918 INFO L82 PathProgramCache]: Analyzing trace with hash -1711199918, now seen corresponding path program 1 times [2020-09-25 04:31:06,918 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:31:06,918 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [675790018] [2020-09-25 04:31:06,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:31:06,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:06,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:07,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:07,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:07,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:07,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:07,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:08,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:08,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:11,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:11,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-09-25 04:31:11,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 04:31:11,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4894 [2020-09-25 04:31:11,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:11,851 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:11,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:31:11,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 98 [2020-09-25 04:31:11,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-25 04:31:11,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:11,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:31:11,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:11,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:11,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:11,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:31:11,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:31:11,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 04:31:11,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:11,952 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:11,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:31:11,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:31:11,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:31:11,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:11,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 04:31:11,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:11,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:12,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:12,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 04:31:12,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:31:12,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-09-25 04:31:12,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:12,104 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:12,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:31:12,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:31:12,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-25 04:31:12,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:12,172 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 40 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:31:12,172 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [675790018] [2020-09-25 04:31:12,173 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:31:12,173 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 04:31:12,173 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106428865] [2020-09-25 04:31:12,175 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 04:31:12,175 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:31:12,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 04:31:12,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:31:12,176 INFO L87 Difference]: Start difference. First operand 731 states and 902 transitions. Second operand 6 states. [2020-09-25 04:31:14,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:31:14,311 INFO L93 Difference]: Finished difference Result 1351 states and 1837 transitions. [2020-09-25 04:31:14,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 04:31:14,314 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 140 [2020-09-25 04:31:14,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:31:14,323 INFO L225 Difference]: With dead ends: 1351 [2020-09-25 04:31:14,323 INFO L226 Difference]: Without dead ends: 1349 [2020-09-25 04:31:14,325 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 04:31:14,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1349 states. [2020-09-25 04:31:14,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1349 to 1045. [2020-09-25 04:31:14,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1045 states. [2020-09-25 04:31:14,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1045 states to 1045 states and 1395 transitions. [2020-09-25 04:31:14,368 INFO L78 Accepts]: Start accepts. Automaton has 1045 states and 1395 transitions. Word has length 140 [2020-09-25 04:31:14,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:31:14,368 INFO L479 AbstractCegarLoop]: Abstraction has 1045 states and 1395 transitions. [2020-09-25 04:31:14,369 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 04:31:14,369 INFO L276 IsEmpty]: Start isEmpty. Operand 1045 states and 1395 transitions. [2020-09-25 04:31:14,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-09-25 04:31:14,372 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:31:14,372 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, 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] [2020-09-25 04:31:14,373 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 04:31:14,373 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:31:14,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:31:14,373 INFO L82 PathProgramCache]: Analyzing trace with hash -861467326, now seen corresponding path program 1 times [2020-09-25 04:31:14,374 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:31:14,374 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1145780004] [2020-09-25 04:31:14,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:31:14,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:14,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:14,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:14,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:15,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:15,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:15,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:18,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:18,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-09-25 04:31:18,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 04:31:18,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4430 [2020-09-25 04:31:18,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:18,840 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:18,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 04:31:18,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-09-25 04:31:18,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-25 04:31:18,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:31:18,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:31:18,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:18,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:18,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:18,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:31:18,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:31:18,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 04:31:18,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:18,932 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:18,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:31:18,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:31:18,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:31:18,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:18,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 04:31:18,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:18,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:19,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:19,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 04:31:19,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:31:19,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-09-25 04:31:19,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:19,080 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:19,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 04:31:19,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:31:19,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 04:31:19,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:19,140 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 40 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:31:19,142 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1145780004] [2020-09-25 04:31:19,142 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:31:19,142 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 04:31:19,143 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714566909] [2020-09-25 04:31:19,144 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 04:31:19,144 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:31:19,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 04:31:19,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:31:19,147 INFO L87 Difference]: Start difference. First operand 1045 states and 1395 transitions. Second operand 6 states. [2020-09-25 04:31:22,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:31:22,122 INFO L93 Difference]: Finished difference Result 2925 states and 4171 transitions. [2020-09-25 04:31:22,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 04:31:22,125 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 146 [2020-09-25 04:31:22,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:31:22,145 INFO L225 Difference]: With dead ends: 2925 [2020-09-25 04:31:22,145 INFO L226 Difference]: Without dead ends: 2046 [2020-09-25 04:31:22,150 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 04:31:22,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2046 states. [2020-09-25 04:31:22,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2046 to 1679. [2020-09-25 04:31:22,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1679 states. [2020-09-25 04:31:22,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1679 states to 1679 states and 2359 transitions. [2020-09-25 04:31:22,250 INFO L78 Accepts]: Start accepts. Automaton has 1679 states and 2359 transitions. Word has length 146 [2020-09-25 04:31:22,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:31:22,251 INFO L479 AbstractCegarLoop]: Abstraction has 1679 states and 2359 transitions. [2020-09-25 04:31:22,251 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 04:31:22,251 INFO L276 IsEmpty]: Start isEmpty. Operand 1679 states and 2359 transitions. [2020-09-25 04:31:22,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2020-09-25 04:31:22,256 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:31:22,257 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, 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] [2020-09-25 04:31:22,257 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 04:31:22,257 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:31:22,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:31:22,258 INFO L82 PathProgramCache]: Analyzing trace with hash 1882471934, now seen corresponding path program 1 times [2020-09-25 04:31:22,258 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:31:22,258 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [665520995] [2020-09-25 04:31:22,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:31:22,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:22,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:22,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:22,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:25,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:25,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:27,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:27,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 190 [2020-09-25 04:31:27,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 04:31:27,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-09-25 04:31:27,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:27,314 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:27,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:31:27,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 137 [2020-09-25 04:31:27,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-25 04:31:27,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:27,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:31:27,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:27,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:27,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:27,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:31:27,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:31:27,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 04:31:27,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:27,404 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:27,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:31:27,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:31:27,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:31:27,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:27,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 04:31:27,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:27,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:27,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:27,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-09-25 04:31:27,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:31:27,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-09-25 04:31:27,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:27,599 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:27,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:31:27,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:31:27,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-09-25 04:31:27,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 04:31:27,707 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 40 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:31:27,708 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [665520995] [2020-09-25 04:31:27,708 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:31:27,708 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 04:31:27,709 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066575672] [2020-09-25 04:31:27,710 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:31:27,713 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:31:27,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:31:27,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:31:27,714 INFO L87 Difference]: Start difference. First operand 1679 states and 2359 transitions. Second operand 5 states. [2020-09-25 04:31:29,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:31:29,866 INFO L93 Difference]: Finished difference Result 3826 states and 5521 transitions. [2020-09-25 04:31:29,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:31:29,867 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 179 [2020-09-25 04:31:29,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:31:29,881 INFO L225 Difference]: With dead ends: 3826 [2020-09-25 04:31:29,881 INFO L226 Difference]: Without dead ends: 2313 [2020-09-25 04:31:29,889 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:31:29,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2313 states. [2020-09-25 04:31:29,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2313 to 2138. [2020-09-25 04:31:29,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2138 states. [2020-09-25 04:31:29,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2138 states to 2138 states and 2972 transitions. [2020-09-25 04:31:29,983 INFO L78 Accepts]: Start accepts. Automaton has 2138 states and 2972 transitions. Word has length 179 [2020-09-25 04:31:29,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:31:29,984 INFO L479 AbstractCegarLoop]: Abstraction has 2138 states and 2972 transitions. [2020-09-25 04:31:29,984 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:31:29,984 INFO L276 IsEmpty]: Start isEmpty. Operand 2138 states and 2972 transitions. [2020-09-25 04:31:29,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2020-09-25 04:31:29,991 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:31:29,991 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2020-09-25 04:31:29,992 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 04:31:29,992 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:31:29,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:31:29,992 INFO L82 PathProgramCache]: Analyzing trace with hash 2009740102, now seen corresponding path program 1 times [2020-09-25 04:31:29,992 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:31:29,993 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [522157973] [2020-09-25 04:31:29,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:31:30,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:30,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:30,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:30,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:30,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:30,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:31,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:35,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:35,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 232 [2020-09-25 04:31:35,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 04:31:35,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-09-25 04:31:35,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:35,062 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:35,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:31:35,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-09-25 04:31:35,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-09-25 04:31:35,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:35,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:31:35,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:35,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:35,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:35,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:31:35,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:31:35,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 04:31:35,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:35,151 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:35,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:31:35,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:31:35,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:31:35,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:35,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 04:31:35,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:35,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:35,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:35,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 04:31:35,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:31:35,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-09-25 04:31:35,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:35,250 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:35,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:31:35,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:31:35,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 04:31:35,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:35,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 04:31:35,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:35,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:35,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:35,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 04:31:35,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:31:35,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-09-25 04:31:35,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:35,412 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:35,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:31:35,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 04:31:35,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 04:31:35,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:31:35,541 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 155 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 04:31:35,542 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [522157973] [2020-09-25 04:31:35,542 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:31:35,543 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 04:31:35,543 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130185993] [2020-09-25 04:31:35,543 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 04:31:35,544 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:31:35,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 04:31:35,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 04:31:35,545 INFO L87 Difference]: Start difference. First operand 2138 states and 2972 transitions. Second operand 8 states. [2020-09-25 04:31:38,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:31:38,038 INFO L93 Difference]: Finished difference Result 5292 states and 7818 transitions. [2020-09-25 04:31:38,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 04:31:38,038 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 219 [2020-09-25 04:31:38,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:31:38,060 INFO L225 Difference]: With dead ends: 5292 [2020-09-25 04:31:38,061 INFO L226 Difference]: Without dead ends: 3169 [2020-09-25 04:31:38,071 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-09-25 04:31:38,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3169 states. [2020-09-25 04:31:38,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3169 to 2933. [2020-09-25 04:31:38,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2933 states. [2020-09-25 04:31:38,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2933 states to 2933 states and 3958 transitions. [2020-09-25 04:31:38,200 INFO L78 Accepts]: Start accepts. Automaton has 2933 states and 3958 transitions. Word has length 219 [2020-09-25 04:31:38,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:31:38,201 INFO L479 AbstractCegarLoop]: Abstraction has 2933 states and 3958 transitions. [2020-09-25 04:31:38,202 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 04:31:38,202 INFO L276 IsEmpty]: Start isEmpty. Operand 2933 states and 3958 transitions. [2020-09-25 04:31:38,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2020-09-25 04:31:38,210 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:31:38,211 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2020-09-25 04:31:38,211 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 04:31:38,211 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:31:38,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:31:38,212 INFO L82 PathProgramCache]: Analyzing trace with hash -199918420, now seen corresponding path program 1 times [2020-09-25 04:31:38,212 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:31:38,212 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1336696354] [2020-09-25 04:31:38,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:31:38,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:38,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:38,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking...