/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=0.8 --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 07:57:10,743 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 07:57:10,747 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 07:57:10,792 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 07:57:10,792 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 07:57:10,804 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 07:57:10,806 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 07:57:10,810 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 07:57:10,813 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 07:57:10,817 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 07:57:10,818 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 07:57:10,819 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 07:57:10,820 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 07:57:10,823 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 07:57:10,826 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 07:57:10,828 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 07:57:10,830 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 07:57:10,832 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 07:57:10,834 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 07:57:10,843 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 07:57:10,846 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 07:57:10,848 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 07:57:10,849 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 07:57:10,850 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 07:57:10,854 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 07:57:10,854 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 07:57:10,854 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 07:57:10,857 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 07:57:10,858 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 07:57:10,862 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 07:57:10,862 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 07:57:10,863 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 07:57:10,863 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 07:57:10,864 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 07:57:10,865 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 07:57:10,865 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 07:57:10,866 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 07:57:10,866 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 07:57:10,866 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 07:57:10,867 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 07:57:10,868 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 07:57:10,869 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 07:57:10,894 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 07:57:10,894 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 07:57:10,896 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 07:57:10,896 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 07:57:10,896 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 07:57:10,897 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 07:57:10,897 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 07:57:10,897 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 07:57:10,897 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 07:57:10,897 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 07:57:10,898 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 07:57:10,898 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 07:57:10,898 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 07:57:10,898 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 07:57:10,898 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 07:57:10,899 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 07:57:10,899 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 07:57:10,899 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 07:57:10,899 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 07:57:10,899 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 07:57:10,900 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 07:57:10,900 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 07:57:10,900 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 07:57:10,900 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 07:57:10,901 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 07:57:10,901 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 07:57:10,901 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 07:57:10,901 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 07:57:10,901 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 07:57:10,902 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=0.8;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=0.8;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=0.8;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=0.8;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=0.8;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=0.8;log-additional-information=true; [2020-09-25 07:57:11,380 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 07:57:11,406 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 07:57:11,412 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 07:57:11,414 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 07:57:11,415 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 07:57:11,416 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label45.c [2020-09-25 07:57:11,509 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b93b9eaaf/3c12ed2e323c40d2a18b65226c6ec4e0/FLAGc5a075839 [2020-09-25 07:57:12,170 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 07:57:12,171 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label45.c [2020-09-25 07:57:12,185 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b93b9eaaf/3c12ed2e323c40d2a18b65226c6ec4e0/FLAGc5a075839 [2020-09-25 07:57:12,407 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b93b9eaaf/3c12ed2e323c40d2a18b65226c6ec4e0 [2020-09-25 07:57:12,420 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 07:57:12,425 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 07:57:12,427 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 07:57:12,427 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 07:57:12,433 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 07:57:12,434 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:57:12" (1/1) ... [2020-09-25 07:57:12,438 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ad15a05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:57:12, skipping insertion in model container [2020-09-25 07:57:12,439 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:57:12" (1/1) ... [2020-09-25 07:57:12,448 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 07:57:12,504 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 07:57:12,939 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:57:12,945 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 07:57:13,142 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:57:13,161 INFO L208 MainTranslator]: Completed translation [2020-09-25 07:57:13,162 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:57:13 WrapperNode [2020-09-25 07:57:13,162 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 07:57:13,163 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 07:57:13,163 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 07:57:13,164 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 07:57:13,179 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:57:13" (1/1) ... [2020-09-25 07:57:13,181 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:57:13" (1/1) ... [2020-09-25 07:57:13,205 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:57:13" (1/1) ... [2020-09-25 07:57:13,206 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:57:13" (1/1) ... [2020-09-25 07:57:13,247 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:57:13" (1/1) ... [2020-09-25 07:57:13,265 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:57:13" (1/1) ... [2020-09-25 07:57:13,275 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:57:13" (1/1) ... [2020-09-25 07:57:13,290 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 07:57:13,290 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 07:57:13,291 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 07:57:13,291 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 07:57:13,293 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:57:13" (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 07:57:13,380 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 07:57:13,380 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 07:57:13,381 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 07:57:13,381 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 07:57:13,381 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 07:57:13,381 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 07:57:13,382 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 07:57:13,382 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 07:57:13,382 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 07:57:13,382 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 07:57:13,382 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 07:57:14,968 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 07:57:14,968 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 07:57:14,977 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:57:14 BoogieIcfgContainer [2020-09-25 07:57:14,977 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 07:57:14,979 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 07:57:14,979 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 07:57:14,984 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 07:57:14,984 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 07:57:12" (1/3) ... [2020-09-25 07:57:14,985 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b9dacaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:57:14, skipping insertion in model container [2020-09-25 07:57:14,986 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:57:13" (2/3) ... [2020-09-25 07:57:14,986 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b9dacaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:57:14, skipping insertion in model container [2020-09-25 07:57:14,986 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:57:14" (3/3) ... [2020-09-25 07:57:14,989 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label45.c [2020-09-25 07:57:15,002 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 07:57:15,014 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 07:57:15,036 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 07:57:15,070 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 07:57:15,070 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 07:57:15,070 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 07:57:15,071 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 07:57:15,071 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 07:57:15,071 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 07:57:15,071 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 07:57:15,071 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 07:57:15,102 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 07:57:15,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-09-25 07:57:15,113 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:57:15,114 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 07:57:15,115 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:57:15,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:57:15,123 INFO L82 PathProgramCache]: Analyzing trace with hash -1037847345, now seen corresponding path program 1 times [2020-09-25 07:57:15,134 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:57:15,135 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1939204010] [2020-09-25 07:57:15,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:57:15,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:15,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:15,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:15,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:16,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:16,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-09-25 07:57:16,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 07:57:16,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 864 [2020-09-25 07:57:16,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:16,194 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:16,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:57:16,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 07:57:16,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-09-25 07:57:16,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 07:57:16,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:57:16,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:16,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:16,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:16,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:57:16,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:57:16,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 07:57:16,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:16,332 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:16,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:57:16,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:57:16,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 07:57:16,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:57:16,356 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 07:57:16,357 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1939204010] [2020-09-25 07:57:16,359 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:57:16,359 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 07:57:16,360 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498567906] [2020-09-25 07:57:16,370 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 07:57:16,371 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:57:16,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 07:57:16,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 07:57:16,397 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 07:57:18,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:57:18,493 INFO L93 Difference]: Finished difference Result 1160 states and 1585 transitions. [2020-09-25 07:57:18,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 07:57:18,495 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 57 [2020-09-25 07:57:18,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:57:18,518 INFO L225 Difference]: With dead ends: 1160 [2020-09-25 07:57:18,518 INFO L226 Difference]: Without dead ends: 631 [2020-09-25 07:57:18,529 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 07:57:18,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 631 states. [2020-09-25 07:57:18,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 631 to 576. [2020-09-25 07:57:18,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 576 states. [2020-09-25 07:57:18,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 708 transitions. [2020-09-25 07:57:18,630 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 708 transitions. Word has length 57 [2020-09-25 07:57:18,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:57:18,631 INFO L479 AbstractCegarLoop]: Abstraction has 576 states and 708 transitions. [2020-09-25 07:57:18,631 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 07:57:18,631 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 708 transitions. [2020-09-25 07:57:18,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-09-25 07:57:18,639 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:57:18,640 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 07:57:18,640 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 07:57:18,641 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:57:18,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:57:18,641 INFO L82 PathProgramCache]: Analyzing trace with hash -1358485705, now seen corresponding path program 1 times [2020-09-25 07:57:18,642 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:57:18,642 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1584275404] [2020-09-25 07:57:18,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:57:18,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:18,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:18,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:19,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:19,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:19,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:20,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:23,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:23,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-09-25 07:57:23,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 07:57:23,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 07:57:23,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:23,696 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:23,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 07:57:23,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 07:57:23,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-09-25 07:57:23,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:57:24,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:57:24,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:24,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:24,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:24,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:57:24,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:57:24,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 07:57:24,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:24,170 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:24,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 07:57:24,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:57:24,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 07:57:24,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 07:57:24,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 07:57:24,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:24,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:24,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:24,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:24,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 07:57:24,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:57:24,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 340 [2020-09-25 07:57:24,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:24,564 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:24,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:57:24,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:57:24,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 07:57:24,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:57:24,695 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 07:57:24,695 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1584275404] [2020-09-25 07:57:24,696 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:57:24,696 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 07:57:24,696 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336896040] [2020-09-25 07:57:24,699 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 07:57:24,699 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:57:24,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 07:57:24,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2020-09-25 07:57:24,700 INFO L87 Difference]: Start difference. First operand 576 states and 708 transitions. Second operand 12 states. [2020-09-25 07:57:27,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:57:27,872 INFO L93 Difference]: Finished difference Result 1521 states and 1944 transitions. [2020-09-25 07:57:27,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 07:57:27,873 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 140 [2020-09-25 07:57:27,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:57:27,880 INFO L225 Difference]: With dead ends: 1521 [2020-09-25 07:57:27,880 INFO L226 Difference]: Without dead ends: 884 [2020-09-25 07:57:27,884 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=130, Invalid=212, Unknown=0, NotChecked=0, Total=342 [2020-09-25 07:57:27,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 884 states. [2020-09-25 07:57:27,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 884 to 705. [2020-09-25 07:57:27,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 705 states. [2020-09-25 07:57:27,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 705 states to 705 states and 844 transitions. [2020-09-25 07:57:27,921 INFO L78 Accepts]: Start accepts. Automaton has 705 states and 844 transitions. Word has length 140 [2020-09-25 07:57:27,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:57:27,922 INFO L479 AbstractCegarLoop]: Abstraction has 705 states and 844 transitions. [2020-09-25 07:57:27,922 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 07:57:27,922 INFO L276 IsEmpty]: Start isEmpty. Operand 705 states and 844 transitions. [2020-09-25 07:57:27,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-09-25 07:57:27,926 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:57:27,926 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 07:57:27,927 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 07:57:27,927 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:57:27,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:57:27,927 INFO L82 PathProgramCache]: Analyzing trace with hash -1711199918, now seen corresponding path program 1 times [2020-09-25 07:57:27,928 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:57:27,928 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [401130293] [2020-09-25 07:57:27,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:57:27,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:27,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:28,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:28,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:28,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:28,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:28,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:28,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:29,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:32,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:32,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-09-25 07:57:32,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 07:57:32,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4627 [2020-09-25 07:57:32,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:32,587 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:32,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:57:32,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 07:57:32,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 07:57:32,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:57:32,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:57:32,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:32,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:32,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:32,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:57:32,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:57:32,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 07:57:32,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:32,665 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:32,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:57:32,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:57:32,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 07:57:32,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:57:32,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 07:57:32,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:32,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:32,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:32,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 07:57:32,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:57:32,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-09-25 07:57:32,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:32,805 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:32,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:57:32,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:57:32,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 07:57:32,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:57:32,879 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 07:57:32,880 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [401130293] [2020-09-25 07:57:32,880 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:57:32,880 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 07:57:32,881 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011371765] [2020-09-25 07:57:32,881 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 07:57:32,882 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:57:32,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 07:57:32,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 07:57:32,882 INFO L87 Difference]: Start difference. First operand 705 states and 844 transitions. Second operand 7 states. [2020-09-25 07:57:35,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:57:35,147 INFO L93 Difference]: Finished difference Result 1773 states and 2236 transitions. [2020-09-25 07:57:35,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 07:57:35,147 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 140 [2020-09-25 07:57:35,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:57:35,162 INFO L225 Difference]: With dead ends: 1773 [2020-09-25 07:57:35,163 INFO L226 Difference]: Without dead ends: 1083 [2020-09-25 07:57:35,167 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-25 07:57:35,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1083 states. [2020-09-25 07:57:35,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1083 to 873. [2020-09-25 07:57:35,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 873 states. [2020-09-25 07:57:35,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 873 states to 873 states and 1043 transitions. [2020-09-25 07:57:35,246 INFO L78 Accepts]: Start accepts. Automaton has 873 states and 1043 transitions. Word has length 140 [2020-09-25 07:57:35,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:57:35,247 INFO L479 AbstractCegarLoop]: Abstraction has 873 states and 1043 transitions. [2020-09-25 07:57:35,247 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 07:57:35,247 INFO L276 IsEmpty]: Start isEmpty. Operand 873 states and 1043 transitions. [2020-09-25 07:57:35,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-09-25 07:57:35,258 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:57:35,259 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 07:57:35,259 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 07:57:35,260 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:57:35,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:57:35,260 INFO L82 PathProgramCache]: Analyzing trace with hash -861467326, now seen corresponding path program 1 times [2020-09-25 07:57:35,260 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:57:35,262 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1300002188] [2020-09-25 07:57:35,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:57:35,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:35,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:35,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:35,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:36,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:36,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:36,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:39,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:39,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-09-25 07:57:39,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 07:57:39,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4299 [2020-09-25 07:57:39,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:39,608 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:39,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 07:57:39,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 07:57:39,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 145 [2020-09-25 07:57:39,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:57:39,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:57:39,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:39,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:39,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:39,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:57:39,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:57:39,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 07:57:39,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:39,737 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:39,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:57:39,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:57:39,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 07:57:39,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:57:39,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 07:57:39,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:39,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:39,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:39,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 07:57:39,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:57:39,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-09-25 07:57:39,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:39,909 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:39,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 07:57:39,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:57:39,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 07:57:39,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:57:40,004 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 7 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:57:40,009 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1300002188] [2020-09-25 07:57:40,010 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:57:40,010 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 07:57:40,010 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50207749] [2020-09-25 07:57:40,011 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 07:57:40,011 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:57:40,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 07:57:40,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 07:57:40,016 INFO L87 Difference]: Start difference. First operand 873 states and 1043 transitions. Second operand 8 states. [2020-09-25 07:57:43,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:57:43,476 INFO L93 Difference]: Finished difference Result 2661 states and 3306 transitions. [2020-09-25 07:57:43,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 07:57:43,477 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 146 [2020-09-25 07:57:43,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:57:43,488 INFO L225 Difference]: With dead ends: 2661 [2020-09-25 07:57:43,488 INFO L226 Difference]: Without dead ends: 1803 [2020-09-25 07:57:43,492 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-09-25 07:57:43,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1803 states. [2020-09-25 07:57:43,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1803 to 1699. [2020-09-25 07:57:43,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1699 states. [2020-09-25 07:57:43,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1699 states to 1699 states and 2069 transitions. [2020-09-25 07:57:43,547 INFO L78 Accepts]: Start accepts. Automaton has 1699 states and 2069 transitions. Word has length 146 [2020-09-25 07:57:43,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:57:43,548 INFO L479 AbstractCegarLoop]: Abstraction has 1699 states and 2069 transitions. [2020-09-25 07:57:43,548 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 07:57:43,548 INFO L276 IsEmpty]: Start isEmpty. Operand 1699 states and 2069 transitions. [2020-09-25 07:57:43,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-09-25 07:57:43,551 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:57:43,552 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] [2020-09-25 07:57:43,552 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 07:57:43,552 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:57:43,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:57:43,553 INFO L82 PathProgramCache]: Analyzing trace with hash -764978616, now seen corresponding path program 1 times [2020-09-25 07:57:43,553 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:57:43,553 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [395030585] [2020-09-25 07:57:43,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:57:43,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:43,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:43,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:43,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:43,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:44,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:44,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-09-25 07:57:44,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 07:57:44,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1282 [2020-09-25 07:57:44,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:44,863 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:44,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:57:44,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 07:57:44,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-09-25 07:57:44,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:57:44,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:57:44,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:44,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:44,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:44,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:57:44,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:57:44,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 07:57:44,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:44,940 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:44,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:57:44,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:57:44,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 07:57:44,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:57:44,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 07:57:44,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:44,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:45,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:45,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-25 07:57:45,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:57:45,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 180 [2020-09-25 07:57:45,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:45,163 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:45,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:57:45,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:57:45,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-09-25 07:57:45,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:57:45,400 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 07:57:45,400 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [395030585] [2020-09-25 07:57:45,401 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:57:45,401 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 07:57:45,401 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200496050] [2020-09-25 07:57:45,403 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 07:57:45,403 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:57:45,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 07:57:45,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 07:57:45,404 INFO L87 Difference]: Start difference. First operand 1699 states and 2069 transitions. Second operand 7 states. [2020-09-25 07:57:47,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:57:47,451 INFO L93 Difference]: Finished difference Result 4655 states and 5892 transitions. [2020-09-25 07:57:47,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 07:57:47,452 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 162 [2020-09-25 07:57:47,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:57:47,469 INFO L225 Difference]: With dead ends: 4655 [2020-09-25 07:57:47,469 INFO L226 Difference]: Without dead ends: 2971 [2020-09-25 07:57:47,476 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-25 07:57:47,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2971 states. [2020-09-25 07:57:47,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2971 to 2647. [2020-09-25 07:57:47,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2647 states. [2020-09-25 07:57:47,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2647 states to 2647 states and 3330 transitions. [2020-09-25 07:57:47,577 INFO L78 Accepts]: Start accepts. Automaton has 2647 states and 3330 transitions. Word has length 162 [2020-09-25 07:57:47,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:57:47,577 INFO L479 AbstractCegarLoop]: Abstraction has 2647 states and 3330 transitions. [2020-09-25 07:57:47,578 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 07:57:47,578 INFO L276 IsEmpty]: Start isEmpty. Operand 2647 states and 3330 transitions. [2020-09-25 07:57:47,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2020-09-25 07:57:47,585 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:57:47,586 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, 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] [2020-09-25 07:57:47,586 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 07:57:47,586 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:57:47,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:57:47,587 INFO L82 PathProgramCache]: Analyzing trace with hash -1411585314, now seen corresponding path program 1 times [2020-09-25 07:57:47,587 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:57:47,587 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [585014902] [2020-09-25 07:57:47,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:57:47,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:47,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:47,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:49,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:49,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:50,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:50,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:50,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:52,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:52,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 245 [2020-09-25 07:57:52,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 07:57:52,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-09-25 07:57:52,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:52,641 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:52,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 07:57:52,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 102 [2020-09-25 07:57:52,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-09-25 07:57:52,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:57:52,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:57:52,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:52,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:52,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:52,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:57:52,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:57:52,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 07:57:52,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:52,740 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:52,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:57:52,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:57:52,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:57:52,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:57:52,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 07:57:52,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:52,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:52,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:52,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-25 07:57:52,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:57:52,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-09-25 07:57:52,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:52,854 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:52,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:57:52,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:57:52,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-09-25 07:57:52,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:57:52,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-09-25 07:57:52,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:52,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:52,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:53,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:53,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 07:57:53,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:57:53,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 210 [2020-09-25 07:57:53,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:53,122 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:53,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 07:57:53,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:57:53,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 07:57:53,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:57:53,214 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 127 proven. 37 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 07:57:53,215 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [585014902] [2020-09-25 07:57:53,215 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:57:53,216 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 07:57:53,216 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596781161] [2020-09-25 07:57:53,216 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 07:57:53,217 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:57:53,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 07:57:53,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 07:57:53,217 INFO L87 Difference]: Start difference. First operand 2647 states and 3330 transitions. Second operand 8 states. [2020-09-25 07:57:56,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:57:56,801 INFO L93 Difference]: Finished difference Result 8403 states and 10992 transitions. [2020-09-25 07:57:56,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 07:57:56,802 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 232 [2020-09-25 07:57:56,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:57:56,837 INFO L225 Difference]: With dead ends: 8403 [2020-09-25 07:57:56,837 INFO L226 Difference]: Without dead ends: 5771 [2020-09-25 07:57:56,848 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2020-09-25 07:57:56,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5771 states. [2020-09-25 07:57:57,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5771 to 5488. [2020-09-25 07:57:57,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5488 states. [2020-09-25 07:57:57,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5488 states to 5488 states and 7097 transitions. [2020-09-25 07:57:57,041 INFO L78 Accepts]: Start accepts. Automaton has 5488 states and 7097 transitions. Word has length 232 [2020-09-25 07:57:57,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:57:57,042 INFO L479 AbstractCegarLoop]: Abstraction has 5488 states and 7097 transitions. [2020-09-25 07:57:57,042 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 07:57:57,042 INFO L276 IsEmpty]: Start isEmpty. Operand 5488 states and 7097 transitions. [2020-09-25 07:57:57,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2020-09-25 07:57:57,050 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:57:57,050 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, 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] [2020-09-25 07:57:57,051 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 07:57:57,051 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:57:57,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:57:57,051 INFO L82 PathProgramCache]: Analyzing trace with hash -978009387, now seen corresponding path program 1 times [2020-09-25 07:57:57,052 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:57:57,052 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1781187973] [2020-09-25 07:57:57,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:57:57,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:57,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:57,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:57,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:58,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:58,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:58,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:58,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:58,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking...