/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --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_label40.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 12:27:18,830 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 12:27:18,833 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 12:27:18,858 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 12:27:18,859 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 12:27:18,860 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 12:27:18,861 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 12:27:18,863 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 12:27:18,865 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 12:27:18,866 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 12:27:18,867 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 12:27:18,868 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 12:27:18,868 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 12:27:18,869 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 12:27:18,870 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 12:27:18,872 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 12:27:18,873 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 12:27:18,874 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 12:27:18,875 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 12:27:18,877 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 12:27:18,879 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 12:27:18,880 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 12:27:18,882 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 12:27:18,883 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 12:27:18,885 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 12:27:18,886 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 12:27:18,886 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 12:27:18,887 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 12:27:18,888 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 12:27:18,889 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 12:27:18,889 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 12:27:18,890 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 12:27:18,891 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 12:27:18,892 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 12:27:18,893 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 12:27:18,893 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 12:27:18,894 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 12:27:18,894 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 12:27:18,895 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 12:27:18,896 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 12:27:18,897 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 12:27:18,897 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 12:27:18,928 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 12:27:18,928 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 12:27:18,929 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 12:27:18,930 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 12:27:18,930 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 12:27:18,930 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 12:27:18,930 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 12:27:18,931 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 12:27:18,931 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 12:27:18,931 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 12:27:18,931 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 12:27:18,931 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 12:27:18,932 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 12:27:18,932 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 12:27:18,932 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 12:27:18,932 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 12:27:18,932 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 12:27:18,933 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 12:27:18,933 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 12:27:18,933 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 12:27:18,933 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 12:27:18,933 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 12:27:18,934 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 12:27:18,934 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 12:27:18,934 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 12:27:18,934 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 12:27:18,935 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 12:27:18,935 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 12:27:18,935 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 12:27:18,935 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=SMALLESTAMONGWIDE;tolerance=0.3;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=SMALLESTAMONGWIDE;tolerance=0.3;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=SMALLESTAMONGWIDE;tolerance=0.3;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=SMALLESTAMONGWIDE;tolerance=0.3;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=SMALLESTAMONGWIDE;tolerance=0.3;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=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; [2020-09-25 12:27:19,415 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 12:27:19,432 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 12:27:19,436 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 12:27:19,438 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 12:27:19,438 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 12:27:19,440 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label40.c [2020-09-25 12:27:19,530 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/55b617638/10a634175dea4db6bc6dad00b00d174d/FLAGd2fd8f581 [2020-09-25 12:27:20,189 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 12:27:20,190 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label40.c [2020-09-25 12:27:20,210 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/55b617638/10a634175dea4db6bc6dad00b00d174d/FLAGd2fd8f581 [2020-09-25 12:27:20,386 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/55b617638/10a634175dea4db6bc6dad00b00d174d [2020-09-25 12:27:20,400 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 12:27:20,406 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 12:27:20,407 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 12:27:20,407 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 12:27:20,411 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 12:27:20,413 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:27:20" (1/1) ... [2020-09-25 12:27:20,417 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5783693b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:27:20, skipping insertion in model container [2020-09-25 12:27:20,417 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:27:20" (1/1) ... [2020-09-25 12:27:20,426 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 12:27:20,479 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 12:27:20,916 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:27:21,023 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 12:27:21,119 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:27:21,138 INFO L208 MainTranslator]: Completed translation [2020-09-25 12:27:21,138 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:27:21 WrapperNode [2020-09-25 12:27:21,139 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 12:27:21,140 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 12:27:21,140 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 12:27:21,140 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 12:27:21,159 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:27:21" (1/1) ... [2020-09-25 12:27:21,161 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:27:21" (1/1) ... [2020-09-25 12:27:21,184 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:27:21" (1/1) ... [2020-09-25 12:27:21,184 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:27:21" (1/1) ... [2020-09-25 12:27:21,224 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:27:21" (1/1) ... [2020-09-25 12:27:21,241 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:27:21" (1/1) ... [2020-09-25 12:27:21,246 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:27:21" (1/1) ... [2020-09-25 12:27:21,256 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 12:27:21,257 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 12:27:21,257 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 12:27:21,257 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 12:27:21,259 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:27:21" (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 12:27:21,361 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 12:27:21,361 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 12:27:21,362 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 12:27:21,362 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 12:27:21,362 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 12:27:21,363 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 12:27:21,364 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 12:27:21,365 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 12:27:21,365 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 12:27:21,365 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 12:27:21,366 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 12:27:22,804 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 12:27:22,804 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 12:27:22,813 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:27:22 BoogieIcfgContainer [2020-09-25 12:27:22,813 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 12:27:22,814 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 12:27:22,815 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 12:27:22,818 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 12:27:22,819 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:27:20" (1/3) ... [2020-09-25 12:27:22,820 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66fad421 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:27:22, skipping insertion in model container [2020-09-25 12:27:22,820 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:27:21" (2/3) ... [2020-09-25 12:27:22,820 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66fad421 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:27:22, skipping insertion in model container [2020-09-25 12:27:22,821 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:27:22" (3/3) ... [2020-09-25 12:27:22,823 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label40.c [2020-09-25 12:27:22,834 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 12:27:22,845 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 12:27:22,867 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 12:27:22,903 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 12:27:22,903 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 12:27:22,903 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 12:27:22,903 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 12:27:22,904 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 12:27:22,904 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 12:27:22,904 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 12:27:22,904 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 12:27:22,935 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 12:27:22,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-09-25 12:27:22,946 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:27:22,948 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] [2020-09-25 12:27:22,948 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:27:22,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:27:22,956 INFO L82 PathProgramCache]: Analyzing trace with hash 1046899727, now seen corresponding path program 1 times [2020-09-25 12:27:22,965 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:27:22,965 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1389399819] [2020-09-25 12:27:22,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:27:23,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:23,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:23,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:23,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-09-25 12:27:23,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:27:23,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 490 [2020-09-25 12:27:23,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:23,710 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:23,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:27:23,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 12:27:23,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-25 12:27:23,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 12:27:23,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:27:23,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:23,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:23,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:23,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:27:23,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:27:23,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 12:27:23,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:23,912 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:23,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:27:23,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:27:23,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 12:27:23,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:27:23,940 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 12:27:23,941 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1389399819] [2020-09-25 12:27:23,943 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:27:23,943 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 12:27:23,944 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43478623] [2020-09-25 12:27:23,950 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 12:27:23,951 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:27:23,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 12:27:23,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:27:23,991 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 5 states. [2020-09-25 12:27:26,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:27:26,531 INFO L93 Difference]: Finished difference Result 1226 states and 1797 transitions. [2020-09-25 12:27:26,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 12:27:26,533 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 68 [2020-09-25 12:27:26,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:27:26,558 INFO L225 Difference]: With dead ends: 1226 [2020-09-25 12:27:26,559 INFO L226 Difference]: Without dead ends: 707 [2020-09-25 12:27:26,571 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-25 12:27:26,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 707 states. [2020-09-25 12:27:26,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 707 to 695. [2020-09-25 12:27:26,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 695 states. [2020-09-25 12:27:26,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 926 transitions. [2020-09-25 12:27:26,681 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 926 transitions. Word has length 68 [2020-09-25 12:27:26,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:27:26,682 INFO L479 AbstractCegarLoop]: Abstraction has 695 states and 926 transitions. [2020-09-25 12:27:26,682 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 12:27:26,682 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 926 transitions. [2020-09-25 12:27:26,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-09-25 12:27:26,692 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:27:26,693 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, 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] [2020-09-25 12:27:26,693 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 12:27:26,693 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:27:26,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:27:26,694 INFO L82 PathProgramCache]: Analyzing trace with hash -160289432, now seen corresponding path program 1 times [2020-09-25 12:27:26,694 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:27:26,695 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [930172375] [2020-09-25 12:27:26,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:27:26,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:26,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:26,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:27,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:27,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:28,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:28,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:31,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:31,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:31,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-09-25 12:27:31,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 12:27:31,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 12:27:31,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:31,767 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:31,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:27:31,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 12:27:31,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-25 12:27:31,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 12:27:31,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:27:31,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:31,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:31,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:31,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:27:31,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:27:31,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 12:27:31,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:31,888 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:31,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:27:31,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:27:31,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 12:27:31,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 12:27:31,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 12:27:31,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:31,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:32,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:32,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 12:27:32,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:27:32,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-09-25 12:27:32,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:32,075 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:32,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:27:32,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:27:32,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 12:27:32,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:27:32,256 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:27:32,257 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [930172375] [2020-09-25 12:27:32,257 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:27:32,257 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 12:27:32,258 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077446647] [2020-09-25 12:27:32,260 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 12:27:32,260 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:27:32,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 12:27:32,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 12:27:32,261 INFO L87 Difference]: Start difference. First operand 695 states and 926 transitions. Second operand 7 states. [2020-09-25 12:27:34,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:27:34,299 INFO L93 Difference]: Finished difference Result 1574 states and 2131 transitions. [2020-09-25 12:27:34,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 12:27:34,300 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 151 [2020-09-25 12:27:34,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:27:34,306 INFO L225 Difference]: With dead ends: 1574 [2020-09-25 12:27:34,306 INFO L226 Difference]: Without dead ends: 894 [2020-09-25 12:27:34,310 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-09-25 12:27:34,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 894 states. [2020-09-25 12:27:34,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 894 to 852. [2020-09-25 12:27:34,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 852 states. [2020-09-25 12:27:34,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 852 states to 852 states and 1127 transitions. [2020-09-25 12:27:34,364 INFO L78 Accepts]: Start accepts. Automaton has 852 states and 1127 transitions. Word has length 151 [2020-09-25 12:27:34,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:27:34,365 INFO L479 AbstractCegarLoop]: Abstraction has 852 states and 1127 transitions. [2020-09-25 12:27:34,365 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 12:27:34,365 INFO L276 IsEmpty]: Start isEmpty. Operand 852 states and 1127 transitions. [2020-09-25 12:27:34,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-09-25 12:27:34,369 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:27:34,370 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, 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] [2020-09-25 12:27:34,370 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 12:27:34,370 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:27:34,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:27:34,371 INFO L82 PathProgramCache]: Analyzing trace with hash 1824017853, now seen corresponding path program 1 times [2020-09-25 12:27:34,371 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:27:34,371 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [385723720] [2020-09-25 12:27:34,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:27:34,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:34,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:34,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:34,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:34,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:36,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:36,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:36,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:38,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:38,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-09-25 12:27:38,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 12:27:38,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4070 [2020-09-25 12:27:38,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:38,481 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:38,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 12:27:38,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 12:27:38,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 156 [2020-09-25 12:27:38,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:27:38,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:27:38,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:38,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:38,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:38,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:27:38,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:27:38,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 12:27:38,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:38,618 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:38,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:27:38,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:27:38,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 12:27:38,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:27:38,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 12:27:38,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:38,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:38,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:38,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 12:27:38,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:27:38,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-09-25 12:27:38,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:38,778 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:38,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:27:38,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:27:38,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 12:27:38,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:27:38,898 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 7 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:27:38,899 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [385723720] [2020-09-25 12:27:38,899 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:27:38,899 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 12:27:38,900 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104361103] [2020-09-25 12:27:38,902 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 12:27:38,903 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:27:38,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 12:27:38,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 12:27:38,904 INFO L87 Difference]: Start difference. First operand 852 states and 1127 transitions. Second operand 8 states. [2020-09-25 12:27:42,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:27:42,379 INFO L93 Difference]: Finished difference Result 2461 states and 3483 transitions. [2020-09-25 12:27:42,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 12:27:42,380 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 157 [2020-09-25 12:27:42,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:27:42,393 INFO L225 Difference]: With dead ends: 2461 [2020-09-25 12:27:42,393 INFO L226 Difference]: Without dead ends: 1775 [2020-09-25 12:27:42,398 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-09-25 12:27:42,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1775 states. [2020-09-25 12:27:42,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1775 to 1522. [2020-09-25 12:27:42,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1522 states. [2020-09-25 12:27:42,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1522 states to 1522 states and 2132 transitions. [2020-09-25 12:27:42,480 INFO L78 Accepts]: Start accepts. Automaton has 1522 states and 2132 transitions. Word has length 157 [2020-09-25 12:27:42,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:27:42,487 INFO L479 AbstractCegarLoop]: Abstraction has 1522 states and 2132 transitions. [2020-09-25 12:27:42,487 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 12:27:42,487 INFO L276 IsEmpty]: Start isEmpty. Operand 1522 states and 2132 transitions. [2020-09-25 12:27:42,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2020-09-25 12:27:42,495 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:27:42,495 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, 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] [2020-09-25 12:27:42,496 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 12:27:42,496 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:27:42,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:27:42,496 INFO L82 PathProgramCache]: Analyzing trace with hash 1830974367, now seen corresponding path program 1 times [2020-09-25 12:27:42,496 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:27:42,497 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [465778339] [2020-09-25 12:27:42,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:27:42,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:42,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:42,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:42,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:45,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:47,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:47,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-09-25 12:27:47,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 12:27:47,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-09-25 12:27:47,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:47,553 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:47,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:27:47,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 12:27:47,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-09-25 12:27:47,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:27:47,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:27:47,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:47,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:47,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:47,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:27:47,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:27:47,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 12:27:47,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:47,623 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:47,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:27:47,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:27:47,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 12:27:47,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:27:47,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 12:27:47,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:47,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:47,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:47,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-09-25 12:27:47,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:27:47,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 218 [2020-09-25 12:27:47,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:47,879 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:47,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:27:47,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:27:47,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-09-25 12:27:47,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 12:27:48,049 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:27:48,051 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [465778339] [2020-09-25 12:27:48,051 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:27:48,052 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 12:27:48,052 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520045197] [2020-09-25 12:27:48,053 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 12:27:48,054 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:27:48,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 12:27:48,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 12:27:48,056 INFO L87 Difference]: Start difference. First operand 1522 states and 2132 transitions. Second operand 7 states. [2020-09-25 12:27:50,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:27:50,542 INFO L93 Difference]: Finished difference Result 3874 states and 5682 transitions. [2020-09-25 12:27:50,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 12:27:50,543 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 190 [2020-09-25 12:27:50,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:27:50,568 INFO L225 Difference]: With dead ends: 3874 [2020-09-25 12:27:50,568 INFO L226 Difference]: Without dead ends: 2367 [2020-09-25 12:27:50,578 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 12:27:50,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2367 states. [2020-09-25 12:27:50,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2367 to 2153. [2020-09-25 12:27:50,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2153 states. [2020-09-25 12:27:50,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2153 states to 2153 states and 2885 transitions. [2020-09-25 12:27:50,700 INFO L78 Accepts]: Start accepts. Automaton has 2153 states and 2885 transitions. Word has length 190 [2020-09-25 12:27:50,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:27:50,701 INFO L479 AbstractCegarLoop]: Abstraction has 2153 states and 2885 transitions. [2020-09-25 12:27:50,701 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 12:27:50,701 INFO L276 IsEmpty]: Start isEmpty. Operand 2153 states and 2885 transitions. [2020-09-25 12:27:50,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2020-09-25 12:27:50,708 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:27:50,709 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, 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, 1, 1, 1, 1, 1, 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 12:27:50,709 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 12:27:50,709 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:27:50,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:27:50,710 INFO L82 PathProgramCache]: Analyzing trace with hash -1649911016, now seen corresponding path program 1 times [2020-09-25 12:27:50,710 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:27:50,710 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [213357297] [2020-09-25 12:27:50,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:27:50,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:50,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:50,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:51,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:51,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:51,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:52,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:52,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:53,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:53,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:55,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:55,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 243 [2020-09-25 12:27:55,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 12:27:55,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 12:27:55,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:55,775 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:55,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 12:27:55,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 12:27:55,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 186 [2020-09-25 12:27:55,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:27:55,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:27:55,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:55,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:55,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:55,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:27:55,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:27:55,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 12:27:55,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:55,933 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:55,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 12:27:55,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:27:55,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 12:27:55,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:27:55,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 12:27:55,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:55,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:56,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:56,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:56,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 12:27:56,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:27:56,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-09-25 12:27:56,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:56,069 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:56,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:27:56,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:27:56,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 12:27:56,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:27:56,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 12:27:56,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:56,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:56,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:56,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:56,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 12:27:56,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:27:56,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 259 [2020-09-25 12:27:56,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:56,379 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:56,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:27:56,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:27:56,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-09-25 12:27:56,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:27:56,602 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 107 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-09-25 12:27:56,603 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [213357297] [2020-09-25 12:27:56,603 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:27:56,603 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 12:27:56,603 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659612522] [2020-09-25 12:27:56,604 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 12:27:56,604 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:27:56,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 12:27:56,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-09-25 12:27:56,605 INFO L87 Difference]: Start difference. First operand 2153 states and 2885 transitions. Second operand 9 states. [2020-09-25 12:28:01,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:28:01,828 INFO L93 Difference]: Finished difference Result 4960 states and 6926 transitions. [2020-09-25 12:28:01,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 12:28:01,829 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 230 [2020-09-25 12:28:01,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:28:01,843 INFO L225 Difference]: With dead ends: 4960 [2020-09-25 12:28:01,844 INFO L226 Difference]: Without dead ends: 2953 [2020-09-25 12:28:01,853 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=62, Invalid=94, Unknown=0, NotChecked=0, Total=156 [2020-09-25 12:28:01,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2953 states. [2020-09-25 12:28:01,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2953 to 2618. [2020-09-25 12:28:01,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2618 states. [2020-09-25 12:28:01,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2618 states to 2618 states and 3458 transitions. [2020-09-25 12:28:01,947 INFO L78 Accepts]: Start accepts. Automaton has 2618 states and 3458 transitions. Word has length 230 [2020-09-25 12:28:01,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:28:01,948 INFO L479 AbstractCegarLoop]: Abstraction has 2618 states and 3458 transitions. [2020-09-25 12:28:01,948 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 12:28:01,948 INFO L276 IsEmpty]: Start isEmpty. Operand 2618 states and 3458 transitions. [2020-09-25 12:28:01,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2020-09-25 12:28:01,955 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:28:01,955 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:28:01,955 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 12:28:01,955 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:28:01,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:28:01,956 INFO L82 PathProgramCache]: Analyzing trace with hash 706836333, now seen corresponding path program 1 times [2020-09-25 12:28:01,956 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:28:01,956 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1761206469] [2020-09-25 12:28:01,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:28:01,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:02,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:02,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:02,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:02,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:04,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:04,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:05,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:07,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:07,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 249 [2020-09-25 12:28:07,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 12:28:07,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-09-25 12:28:07,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:07,015 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:07,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 12:28:07,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 12:28:07,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 174 [2020-09-25 12:28:07,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:28:07,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:28:07,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:07,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:07,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:07,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:28:07,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:28:07,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 12:28:07,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:07,111 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:07,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:28:07,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:28:07,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 12:28:07,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:28:07,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 12:28:07,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:07,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:07,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:07,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 12:28:07,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:28:07,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-09-25 12:28:07,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:07,231 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:07,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:28:07,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:28:07,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 12:28:07,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:28:07,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 12:28:07,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:07,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:07,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:07,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 12:28:07,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:28:07,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-09-25 12:28:07,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:07,383 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:07,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:28:07,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:28:07,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 12:28:07,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:28:07,477 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 114 proven. 65 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 12:28:07,477 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1761206469] [2020-09-25 12:28:07,477 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:28:07,478 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 12:28:07,478 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611152079] [2020-09-25 12:28:07,478 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 12:28:07,479 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:28:07,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 12:28:07,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-09-25 12:28:07,479 INFO L87 Difference]: Start difference. First operand 2618 states and 3458 transitions. Second operand 10 states.