/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 SequenceOfStatements --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=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem18_label21.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 09:47:39,826 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 09:47:39,829 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 09:47:39,854 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 09:47:39,854 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 09:47:39,855 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 09:47:39,857 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 09:47:39,859 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 09:47:39,860 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 09:47:39,861 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 09:47:39,862 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 09:47:39,863 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 09:47:39,864 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 09:47:39,867 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 09:47:39,868 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 09:47:39,869 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 09:47:39,870 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 09:47:39,871 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 09:47:39,873 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 09:47:39,874 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 09:47:39,876 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 09:47:39,877 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 09:47:39,878 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 09:47:39,879 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 09:47:39,885 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 09:47:39,885 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 09:47:39,885 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 09:47:39,886 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 09:47:39,887 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 09:47:39,888 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 09:47:39,888 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 09:47:39,889 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 09:47:39,891 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 09:47:39,892 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 09:47:39,893 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 09:47:39,894 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 09:47:39,895 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 09:47:39,895 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 09:47:39,895 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 09:47:39,901 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 09:47:39,902 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 09:47:39,907 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 [2020-10-13 09:47:39,931 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 09:47:39,931 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 09:47:39,932 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 09:47:39,933 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 09:47:39,933 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 09:47:39,933 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 09:47:39,933 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 09:47:39,934 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 09:47:39,934 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 09:47:39,934 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 09:47:39,934 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 09:47:39,934 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 09:47:39,934 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 09:47:39,935 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 09:47:39,935 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 09:47:39,935 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 09:47:39,935 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 09:47:39,935 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 09:47:39,936 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 09:47:39,936 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 09:47:39,936 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 09:47:39,936 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 09:47:39,936 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 09:47:39,937 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 09:47:39,937 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 09:47:39,937 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 09:47:39,937 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 09:47:39,937 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 09:47:39,938 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 09:47:39,938 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 -> SequenceOfStatements 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=NARROWEST;log-additional-information=true;unknown-allowed=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=NARROWEST;log-additional-information=true;unknown-allowed=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=NARROWEST;log-additional-information=true;unknown-allowed=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=NARROWEST;log-additional-information=true;unknown-allowed=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=NARROWEST;log-additional-information=true;unknown-allowed=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=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 09:47:40,261 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 09:47:40,278 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 09:47:40,285 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 09:47:40,287 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 09:47:40,289 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 09:47:40,290 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label21.c [2020-10-13 09:47:40,375 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/191ea5aeb/ff13ad0d77954ec98062c4422d9f994c/FLAGc899c2c81 [2020-10-13 09:47:41,143 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 09:47:41,144 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem18_label21.c [2020-10-13 09:47:41,171 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/191ea5aeb/ff13ad0d77954ec98062c4422d9f994c/FLAGc899c2c81 [2020-10-13 09:47:41,268 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/191ea5aeb/ff13ad0d77954ec98062c4422d9f994c [2020-10-13 09:47:41,280 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 09:47:41,282 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 09:47:41,286 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 09:47:41,286 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 09:47:41,290 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 09:47:41,291 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:47:41" (1/1) ... [2020-10-13 09:47:41,294 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51a556b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:47:41, skipping insertion in model container [2020-10-13 09:47:41,294 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:47:41" (1/1) ... [2020-10-13 09:47:41,304 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 09:47:41,445 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 09:47:42,682 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 09:47:42,687 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 09:47:43,166 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 09:47:43,197 INFO L208 MainTranslator]: Completed translation [2020-10-13 09:47:43,197 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:47:43 WrapperNode [2020-10-13 09:47:43,198 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 09:47:43,199 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 09:47:43,199 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 09:47:43,199 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 09:47:43,216 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:47:43" (1/1) ... [2020-10-13 09:47:43,217 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:47:43" (1/1) ... [2020-10-13 09:47:43,265 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:47:43" (1/1) ... [2020-10-13 09:47:43,266 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:47:43" (1/1) ... [2020-10-13 09:47:43,343 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:47:43" (1/1) ... [2020-10-13 09:47:43,378 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:47:43" (1/1) ... [2020-10-13 09:47:43,405 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:47:43" (1/1) ... [2020-10-13 09:47:43,443 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 09:47:43,445 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 09:47:43,445 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 09:47:43,445 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 09:47:43,446 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:47:43" (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 [2020-10-13 09:47:43,581 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 09:47:43,581 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 09:47:43,582 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 09:47:43,582 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-13 09:47:43,582 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-13 09:47:43,583 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 09:47:43,583 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 09:47:43,583 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-13 09:47:43,583 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-13 09:47:43,584 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 09:47:43,584 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 09:47:43,584 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 09:47:43,584 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 09:47:43,584 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 09:47:43,584 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 09:47:49,878 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 09:47:49,879 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 09:47:49,895 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:47:49 BoogieIcfgContainer [2020-10-13 09:47:49,896 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 09:47:49,898 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 09:47:49,898 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 09:47:49,901 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 09:47:49,902 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:47:41" (1/3) ... [2020-10-13 09:47:49,903 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ab335cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:47:49, skipping insertion in model container [2020-10-13 09:47:49,904 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:47:43" (2/3) ... [2020-10-13 09:47:49,904 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ab335cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:47:49, skipping insertion in model container [2020-10-13 09:47:49,905 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:47:49" (3/3) ... [2020-10-13 09:47:49,908 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem18_label21.c [2020-10-13 09:47:49,922 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 09:47:49,938 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 09:47:49,956 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 09:47:49,994 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 09:47:49,994 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 09:47:49,994 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 09:47:49,994 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 09:47:49,995 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 09:47:49,995 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 09:47:49,995 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 09:47:49,995 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 09:47:50,147 INFO L276 IsEmpty]: Start isEmpty. Operand 774 states. [2020-10-13 09:47:50,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-13 09:47:50,162 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:47:50,163 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] [2020-10-13 09:47:50,164 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:47:50,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:47:50,172 INFO L82 PathProgramCache]: Analyzing trace with hash -242469919, now seen corresponding path program 1 times [2020-10-13 09:47:50,184 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:47:50,184 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1181842961] [2020-10-13 09:47:50,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:47:50,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:47:50,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:47:50,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:47:50,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-13 09:47:50,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:47:50,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 430 [2020-10-13 09:47:50,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:47:50,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 09:47:50,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 09:47:50,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-13 09:47:50,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 09:47:50,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:47:50,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:47:50,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:47:50,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:47:50,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:47:50,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:47:50,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 09:47:50,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:47:50,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:47:50,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:47:50,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:47:50,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:47:51,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:47:51,009 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1181842961] [2020-10-13 09:47:51,012 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 09:47:51,012 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 09:47:51,014 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119979030] [2020-10-13 09:47:51,021 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:47:51,021 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:47:51,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:47:51,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:47:51,041 INFO L87 Difference]: Start difference. First operand 774 states. Second operand 5 states. [2020-10-13 09:48:02,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:48:02,207 INFO L93 Difference]: Finished difference Result 2984 states and 5767 transitions. [2020-10-13 09:48:02,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 09:48:02,212 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 64 [2020-10-13 09:48:02,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:48:02,252 INFO L225 Difference]: With dead ends: 2984 [2020-10-13 09:48:02,253 INFO L226 Difference]: Without dead ends: 2142 [2020-10-13 09:48:02,266 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:48:02,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2142 states. [2020-10-13 09:48:02,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2142 to 2135. [2020-10-13 09:48:02,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2135 states. [2020-10-13 09:48:02,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2135 states to 2135 states and 3227 transitions. [2020-10-13 09:48:02,452 INFO L78 Accepts]: Start accepts. Automaton has 2135 states and 3227 transitions. Word has length 64 [2020-10-13 09:48:02,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:48:02,453 INFO L479 AbstractCegarLoop]: Abstraction has 2135 states and 3227 transitions. [2020-10-13 09:48:02,454 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:48:02,454 INFO L276 IsEmpty]: Start isEmpty. Operand 2135 states and 3227 transitions. [2020-10-13 09:48:02,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-13 09:48:02,462 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:48:02,463 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, 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] [2020-10-13 09:48:02,463 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 09:48:02,464 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:48:02,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:48:02,464 INFO L82 PathProgramCache]: Analyzing trace with hash -287137732, now seen corresponding path program 1 times [2020-10-13 09:48:02,464 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:48:02,465 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1216943201] [2020-10-13 09:48:02,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:48:02,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:48:02,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:48:02,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:48:03,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:48:04,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:48:04,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-13 09:48:04,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:48:04,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1714 [2020-10-13 09:48:04,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:48:04,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 09:48:04,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-13 09:48:04,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-13 09:48:04,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:48:04,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:48:04,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:48:04,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:48:04,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:48:04,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:48:04,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:48:04,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:48:04,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:48:04,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:48:04,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:48:04,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:48:04,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:48:04,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:48:04,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:48:04,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:48:04,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:48:04,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-13 09:48:04,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:48:04,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-13 09:48:04,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:48:04,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:48:04,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:48:04,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-13 09:48:04,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:48:04,541 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 56 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:48:04,542 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1216943201] [2020-10-13 09:48:04,542 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:48:04,543 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 09:48:04,543 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182299284] [2020-10-13 09:48:04,545 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 09:48:04,545 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:48:04,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 09:48:04,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-13 09:48:04,546 INFO L87 Difference]: Start difference. First operand 2135 states and 3227 transitions. Second operand 8 states. [2020-10-13 09:48:12,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:48:12,178 INFO L93 Difference]: Finished difference Result 4392 states and 6604 transitions. [2020-10-13 09:48:12,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 09:48:12,187 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 134 [2020-10-13 09:48:12,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:48:12,201 INFO L225 Difference]: With dead ends: 4392 [2020-10-13 09:48:12,201 INFO L226 Difference]: Without dead ends: 2142 [2020-10-13 09:48:12,209 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:48:12,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2142 states. [2020-10-13 09:48:12,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2142 to 2135. [2020-10-13 09:48:12,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2135 states. [2020-10-13 09:48:12,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2135 states to 2135 states and 2643 transitions. [2020-10-13 09:48:12,280 INFO L78 Accepts]: Start accepts. Automaton has 2135 states and 2643 transitions. Word has length 134 [2020-10-13 09:48:12,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:48:12,281 INFO L479 AbstractCegarLoop]: Abstraction has 2135 states and 2643 transitions. [2020-10-13 09:48:12,281 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 09:48:12,282 INFO L276 IsEmpty]: Start isEmpty. Operand 2135 states and 2643 transitions. [2020-10-13 09:48:12,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-10-13 09:48:12,285 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:48:12,285 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, 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] [2020-10-13 09:48:12,285 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 09:48:12,286 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:48:12,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:48:12,286 INFO L82 PathProgramCache]: Analyzing trace with hash -903760780, now seen corresponding path program 1 times [2020-10-13 09:48:12,286 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:48:12,287 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1204425891] [2020-10-13 09:48:12,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:48:12,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:48:12,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:48:12,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:48:13,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:48:13,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-13 09:48:13,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:48:13,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 771 [2020-10-13 09:48:13,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:48:13,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:48:13,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-13 09:48:13,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-13 09:48:13,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:48:13,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:48:13,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:48:13,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:48:13,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:48:13,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:48:13,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:48:13,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:48:13,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:48:13,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:48:13,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:48:13,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:48:13,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:48:13,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:48:13,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:48:13,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:48:13,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:48:13,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-13 09:48:13,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:48:13,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-13 09:48:13,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:48:13,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:48:13,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:48:13,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-13 09:48:13,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:48:13,443 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 56 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:48:13,444 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1204425891] [2020-10-13 09:48:13,444 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:48:13,445 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:48:13,445 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965982089] [2020-10-13 09:48:13,447 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:48:13,448 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:48:13,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:48:13,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:48:13,449 INFO L87 Difference]: Start difference. First operand 2135 states and 2643 transitions. Second operand 5 states. [2020-10-13 09:48:19,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:48:19,535 INFO L93 Difference]: Finished difference Result 5691 states and 7143 transitions. [2020-10-13 09:48:19,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:48:19,542 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 138 [2020-10-13 09:48:19,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:48:19,565 INFO L225 Difference]: With dead ends: 5691 [2020-10-13 09:48:19,565 INFO L226 Difference]: Without dead ends: 3562 [2020-10-13 09:48:19,571 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:48:19,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3562 states. [2020-10-13 09:48:19,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3562 to 3558. [2020-10-13 09:48:19,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3558 states. [2020-10-13 09:48:19,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3558 states to 3558 states and 4248 transitions. [2020-10-13 09:48:19,675 INFO L78 Accepts]: Start accepts. Automaton has 3558 states and 4248 transitions. Word has length 138 [2020-10-13 09:48:19,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:48:19,677 INFO L479 AbstractCegarLoop]: Abstraction has 3558 states and 4248 transitions. [2020-10-13 09:48:19,677 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:48:19,677 INFO L276 IsEmpty]: Start isEmpty. Operand 3558 states and 4248 transitions. [2020-10-13 09:48:19,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-13 09:48:19,687 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:48:19,687 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, 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] [2020-10-13 09:48:19,688 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 09:48:19,688 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:48:19,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:48:19,689 INFO L82 PathProgramCache]: Analyzing trace with hash 627849016, now seen corresponding path program 1 times [2020-10-13 09:48:19,689 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:48:19,690 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [390560644] [2020-10-13 09:48:19,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:48:19,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:48:19,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:48:19,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:48:20,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:48:21,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:48:21,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-13 09:48:21,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:48:21,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1380 [2020-10-13 09:48:21,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:48:21,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:48:21,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 98 [2020-10-13 09:48:21,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 09:48:21,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:48:21,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:48:21,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:48:21,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:48:21,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:48:21,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:48:21,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:48:21,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:48:21,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:48:21,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:48:21,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:48:21,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:48:21,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:48:21,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:48:21,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:48:21,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:48:21,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:48:21,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-13 09:48:21,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:48:21,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-13 09:48:21,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:48:21,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:48:21,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:48:21,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-13 09:48:21,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:48:21,419 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 56 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:48:21,420 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [390560644] [2020-10-13 09:48:21,420 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:48:21,421 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:48:21,421 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616362349] [2020-10-13 09:48:21,422 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:48:21,422 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:48:21,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:48:21,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:48:21,423 INFO L87 Difference]: Start difference. First operand 3558 states and 4248 transitions. Second operand 5 states. [2020-10-13 09:48:25,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:48:25,539 INFO L93 Difference]: Finished difference Result 7132 states and 8531 transitions. [2020-10-13 09:48:25,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:48:25,545 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 152 [2020-10-13 09:48:25,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:48:25,562 INFO L225 Difference]: With dead ends: 7132 [2020-10-13 09:48:25,563 INFO L226 Difference]: Without dead ends: 3562 [2020-10-13 09:48:25,570 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:48:25,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3562 states. [2020-10-13 09:48:25,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3562 to 3558. [2020-10-13 09:48:25,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3558 states. [2020-10-13 09:48:25,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3558 states to 3558 states and 4243 transitions. [2020-10-13 09:48:25,658 INFO L78 Accepts]: Start accepts. Automaton has 3558 states and 4243 transitions. Word has length 152 [2020-10-13 09:48:25,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:48:25,658 INFO L479 AbstractCegarLoop]: Abstraction has 3558 states and 4243 transitions. [2020-10-13 09:48:25,658 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:48:25,658 INFO L276 IsEmpty]: Start isEmpty. Operand 3558 states and 4243 transitions. [2020-10-13 09:48:25,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-10-13 09:48:25,661 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:48:25,661 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, 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] [2020-10-13 09:48:25,661 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 09:48:25,661 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:48:25,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:48:25,662 INFO L82 PathProgramCache]: Analyzing trace with hash 882417865, now seen corresponding path program 1 times [2020-10-13 09:48:25,662 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:48:25,662 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [703086939] [2020-10-13 09:48:25,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:48:25,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:48:25,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:48:25,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:48:26,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:48:26,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:48:26,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-10-13 09:48:26,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:48:26,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1053 [2020-10-13 09:48:26,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:48:26,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:48:26,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-13 09:48:26,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 09:48:26,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:48:26,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:48:26,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:48:26,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:48:26,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:48:26,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:48:26,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:48:26,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:48:26,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:48:26,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:48:26,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:48:26,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:48:26,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:48:26,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:48:26,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:48:26,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:48:26,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:48:26,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-13 09:48:26,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:48:26,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-13 09:48:26,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:48:26,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:48:26,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:48:26,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-13 09:48:26,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:48:26,997 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 56 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:48:26,997 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [703086939] [2020-10-13 09:48:26,998 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:48:26,998 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:48:26,999 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830498979] [2020-10-13 09:48:27,000 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:48:27,000 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:48:27,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:48:27,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:48:27,001 INFO L87 Difference]: Start difference. First operand 3558 states and 4243 transitions. Second operand 5 states. [2020-10-13 09:48:31,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:48:31,124 INFO L93 Difference]: Finished difference Result 7133 states and 8522 transitions. [2020-10-13 09:48:31,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:48:31,130 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 159 [2020-10-13 09:48:31,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:48:31,146 INFO L225 Difference]: With dead ends: 7133 [2020-10-13 09:48:31,147 INFO L226 Difference]: Without dead ends: 3562 [2020-10-13 09:48:31,155 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:48:31,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3562 states. [2020-10-13 09:48:31,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3562 to 3558. [2020-10-13 09:48:31,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3558 states. [2020-10-13 09:48:31,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3558 states to 3558 states and 4238 transitions. [2020-10-13 09:48:31,245 INFO L78 Accepts]: Start accepts. Automaton has 3558 states and 4238 transitions. Word has length 159 [2020-10-13 09:48:31,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:48:31,245 INFO L479 AbstractCegarLoop]: Abstraction has 3558 states and 4238 transitions. [2020-10-13 09:48:31,245 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:48:31,245 INFO L276 IsEmpty]: Start isEmpty. Operand 3558 states and 4238 transitions. [2020-10-13 09:48:31,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2020-10-13 09:48:31,249 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:48:31,249 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, 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] [2020-10-13 09:48:31,249 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 09:48:31,249 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:48:31,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:48:31,253 INFO L82 PathProgramCache]: Analyzing trace with hash -1807980780, now seen corresponding path program 1 times [2020-10-13 09:48:31,253 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:48:31,253 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [539748234] [2020-10-13 09:48:31,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:48:31,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:48:31,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:48:31,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:48:32,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:48:32,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-13 09:48:32,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:48:32,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1396 [2020-10-13 09:48:32,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:48:32,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:48:32,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 132 [2020-10-13 09:48:32,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-13 09:48:32,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:48:32,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:48:32,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:48:32,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:48:32,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:48:32,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:48:32,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:48:32,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:48:32,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:48:32,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:48:32,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:48:32,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:48:32,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:48:32,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:48:32,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:48:32,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:48:32,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:48:32,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-13 09:48:32,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:48:32,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-13 09:48:32,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:48:32,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:48:32,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:48:32,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-13 09:48:32,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:48:33,007 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 56 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:48:33,008 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [539748234] [2020-10-13 09:48:33,008 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:48:33,009 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:48:33,009 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616521070] [2020-10-13 09:48:33,010 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:48:33,010 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:48:33,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:48:33,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:48:33,010 INFO L87 Difference]: Start difference. First operand 3558 states and 4238 transitions. Second operand 5 states. [2020-10-13 09:48:39,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:48:39,471 INFO L93 Difference]: Finished difference Result 9248 states and 11238 transitions. [2020-10-13 09:48:39,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:48:39,473 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 186 [2020-10-13 09:48:39,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:48:39,497 INFO L225 Difference]: With dead ends: 9248 [2020-10-13 09:48:39,498 INFO L226 Difference]: Without dead ends: 5696 [2020-10-13 09:48:39,506 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:48:39,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5696 states. [2020-10-13 09:48:39,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5696 to 5685. [2020-10-13 09:48:39,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5685 states. [2020-10-13 09:48:39,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5685 states to 5685 states and 6672 transitions. [2020-10-13 09:48:39,649 INFO L78 Accepts]: Start accepts. Automaton has 5685 states and 6672 transitions. Word has length 186 [2020-10-13 09:48:39,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:48:39,650 INFO L479 AbstractCegarLoop]: Abstraction has 5685 states and 6672 transitions. [2020-10-13 09:48:39,650 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:48:39,650 INFO L276 IsEmpty]: Start isEmpty. Operand 5685 states and 6672 transitions. [2020-10-13 09:48:39,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-10-13 09:48:39,655 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:48:39,655 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, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:48:39,656 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 09:48:39,656 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:48:39,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:48:39,657 INFO L82 PathProgramCache]: Analyzing trace with hash -186976640, now seen corresponding path program 1 times [2020-10-13 09:48:39,657 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:48:39,657 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1919190880] [2020-10-13 09:48:39,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:48:39,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:48:39,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:48:39,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:48:40,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:48:41,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:48:41,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 222 [2020-10-13 09:48:41,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:48:41,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1335 [2020-10-13 09:48:41,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:48:41,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:48:41,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 158 [2020-10-13 09:48:41,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-13 09:48:41,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:48:41,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:48:41,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:48:41,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:48:41,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:48:41,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:48:41,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:48:41,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:48:41,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:48:41,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:48:41,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:48:41,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:48:41,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:48:41,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:48:41,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:48:41,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:48:41,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:48:41,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-13 09:48:41,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:48:41,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-13 09:48:41,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:48:41,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:48:41,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:48:41,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 143 [2020-10-13 09:48:41,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:48:41,539 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 56 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:48:41,539 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1919190880] [2020-10-13 09:48:41,540 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:48:41,540 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:48:41,541 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680084557] [2020-10-13 09:48:41,542 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:48:41,542 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:48:41,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:48:41,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:48:41,543 INFO L87 Difference]: Start difference. First operand 5685 states and 6672 transitions. Second operand 5 states. [2020-10-13 09:48:46,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:48:46,651 INFO L93 Difference]: Finished difference Result 11403 states and 13413 transitions. [2020-10-13 09:48:46,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:48:46,653 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 212 [2020-10-13 09:48:46,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:48:46,678 INFO L225 Difference]: With dead ends: 11403 [2020-10-13 09:48:46,678 INFO L226 Difference]: Without dead ends: 5696 [2020-10-13 09:48:46,691 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:48:46,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5696 states. [2020-10-13 09:48:46,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5696 to 5685. [2020-10-13 09:48:46,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5685 states. [2020-10-13 09:48:46,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5685 states to 5685 states and 6667 transitions. [2020-10-13 09:48:46,859 INFO L78 Accepts]: Start accepts. Automaton has 5685 states and 6667 transitions. Word has length 212 [2020-10-13 09:48:46,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:48:46,859 INFO L479 AbstractCegarLoop]: Abstraction has 5685 states and 6667 transitions. [2020-10-13 09:48:46,859 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:48:46,859 INFO L276 IsEmpty]: Start isEmpty. Operand 5685 states and 6667 transitions. [2020-10-13 09:48:46,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2020-10-13 09:48:46,864 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:48:46,865 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, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:48:46,865 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 09:48:46,865 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:48:46,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:48:46,866 INFO L82 PathProgramCache]: Analyzing trace with hash 763622556, now seen corresponding path program 1 times [2020-10-13 09:48:46,866 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:48:46,866 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1197616745] [2020-10-13 09:48:46,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:48:46,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:48:46,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:48:47,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:48:47,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:48:48,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:48:48,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-13 09:48:48,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:48:48,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1410 [2020-10-13 09:48:48,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:48:48,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:48:48,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 160 [2020-10-13 09:48:48,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 09:48:48,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:48:48,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:48:48,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:48:48,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:48:48,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:48:48,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:48:48,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:48:48,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 09:48:48,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:48:48,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:48:48,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:48:48,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:48:48,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:48:48,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:48:48,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:48:48,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:48:48,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:48:48,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-13 09:48:48,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:48:48,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-10-13 09:48:48,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:48:48,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:48:48,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:48:48,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 145 [2020-10-13 09:48:48,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:48:48,746 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 56 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:48:48,747 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1197616745] [2020-10-13 09:48:48,747 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:48:48,748 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:48:48,748 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880614903] [2020-10-13 09:48:48,749 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:48:48,749 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:48:48,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:48:48,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:48:48,750 INFO L87 Difference]: Start difference. First operand 5685 states and 6667 transitions. Second operand 5 states. [2020-10-13 09:48:52,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:48:52,937 INFO L93 Difference]: Finished difference Result 11397 states and 13397 transitions. [2020-10-13 09:48:52,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:48:52,939 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 214 [2020-10-13 09:48:52,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:48:52,960 INFO L225 Difference]: With dead ends: 11397 [2020-10-13 09:48:52,961 INFO L226 Difference]: Without dead ends: 5696 [2020-10-13 09:48:52,975 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:48:52,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5696 states. [2020-10-13 09:48:53,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5696 to 5685. [2020-10-13 09:48:53,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5685 states. [2020-10-13 09:48:53,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5685 states to 5685 states and 6662 transitions. [2020-10-13 09:48:53,098 INFO L78 Accepts]: Start accepts. Automaton has 5685 states and 6662 transitions. Word has length 214 [2020-10-13 09:48:53,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:48:53,098 INFO L479 AbstractCegarLoop]: Abstraction has 5685 states and 6662 transitions. [2020-10-13 09:48:53,098 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:48:53,099 INFO L276 IsEmpty]: Start isEmpty. Operand 5685 states and 6662 transitions. [2020-10-13 09:48:53,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2020-10-13 09:48:53,105 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:48:53,106 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:48:53,106 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 09:48:53,107 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:48:53,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:48:53,107 INFO L82 PathProgramCache]: Analyzing trace with hash -982992513, now seen corresponding path program 1 times [2020-10-13 09:48:53,107 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:48:53,108 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1635499419] [2020-10-13 09:48:53,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:48:53,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:48:53,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:48:53,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:48:53,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:48:55,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:48:57,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:48:57,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 292 [2020-10-13 09:48:57,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:48:57,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4807 [2020-10-13 09:48:57,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:48:57,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:48:57,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 228 [2020-10-13 09:48:57,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-13 09:48:57,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:48:58,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:48:58,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:48:58,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:48:58,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:48:58,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:48:58,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:48:58,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:48:58,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:48:58,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:48:58,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:48:58,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:48:58,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:48:58,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:48:58,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:48:58,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:48:58,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:48:58,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-13 09:48:58,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:48:58,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-13 09:48:58,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:48:58,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:48:58,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:48:58,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:48:58,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:48:58,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-13 09:48:58,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:48:58,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:48:58,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:48:58,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-13 09:48:58,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:48:58,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-13 09:48:58,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:48:58,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:48:58,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:48:58,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-13 09:48:58,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:48:58,597 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 115 proven. 2 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2020-10-13 09:48:58,602 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1635499419] [2020-10-13 09:48:58,603 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:48:58,603 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:48:58,604 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650251194] [2020-10-13 09:48:58,605 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:48:58,605 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:48:58,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:48:58,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:48:58,605 INFO L87 Difference]: Start difference. First operand 5685 states and 6662 transitions. Second operand 5 states. [2020-10-13 09:49:02,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:49:02,725 INFO L93 Difference]: Finished difference Result 11407 states and 13393 transitions. [2020-10-13 09:49:02,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:49:02,726 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 280 [2020-10-13 09:49:02,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:49:02,743 INFO L225 Difference]: With dead ends: 11407 [2020-10-13 09:49:02,743 INFO L226 Difference]: Without dead ends: 5696 [2020-10-13 09:49:02,754 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:49:02,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5696 states. [2020-10-13 09:49:02,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5696 to 5685. [2020-10-13 09:49:02,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5685 states. [2020-10-13 09:49:02,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5685 states to 5685 states and 6660 transitions. [2020-10-13 09:49:02,870 INFO L78 Accepts]: Start accepts. Automaton has 5685 states and 6660 transitions. Word has length 280 [2020-10-13 09:49:02,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:49:02,871 INFO L479 AbstractCegarLoop]: Abstraction has 5685 states and 6660 transitions. [2020-10-13 09:49:02,871 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:49:02,872 INFO L276 IsEmpty]: Start isEmpty. Operand 5685 states and 6660 transitions. [2020-10-13 09:49:02,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2020-10-13 09:49:02,883 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:49:02,883 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, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:49:02,884 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 09:49:02,884 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:49:02,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:49:02,885 INFO L82 PathProgramCache]: Analyzing trace with hash -298784986, now seen corresponding path program 1 times [2020-10-13 09:49:02,885 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:49:02,885 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1303699013] [2020-10-13 09:49:02,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:49:02,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:49:02,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:49:03,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:49:03,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:49:05,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:49:06,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:49:06,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:49:07,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:49:07,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 301 [2020-10-13 09:49:07,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 09:49:07,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-13 09:49:07,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:49:07,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:49:07,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 237 [2020-10-13 09:49:07,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 09:49:07,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:49:08,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:49:08,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:49:08,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:49:08,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:49:08,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:49:08,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:49:08,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 09:49:08,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:49:08,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:49:08,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:49:08,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:49:08,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:49:08,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:49:08,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:49:08,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:49:08,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:49:08,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-13 09:49:08,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:49:08,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-13 09:49:08,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:49:08,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:49:08,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:49:08,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:49:08,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-13 09:49:08,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-13 09:49:08,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:49:08,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:49:08,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:49:08,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-13 09:49:08,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:49:08,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-10-13 09:49:08,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:49:08,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:49:08,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:49:08,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-13 09:49:08,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:49:08,661 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 115 proven. 2 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2020-10-13 09:49:08,661 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1303699013] [2020-10-13 09:49:08,662 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:49:08,662 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:49:08,663 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491281205] [2020-10-13 09:49:08,664 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:49:08,664 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:49:08,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:49:08,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:49:08,665 INFO L87 Difference]: Start difference. First operand 5685 states and 6660 transitions. Second operand 5 states. [2020-10-13 09:49:13,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:49:13,151 INFO L93 Difference]: Finished difference Result 11390 states and 13374 transitions. [2020-10-13 09:49:13,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:49:13,152 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 289 [2020-10-13 09:49:13,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:49:13,168 INFO L225 Difference]: With dead ends: 11390 [2020-10-13 09:49:13,169 INFO L226 Difference]: Without dead ends: 5696 [2020-10-13 09:49:13,180 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:49:13,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5696 states. [2020-10-13 09:49:13,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5696 to 5685. [2020-10-13 09:49:13,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5685 states. [2020-10-13 09:49:13,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5685 states to 5685 states and 6656 transitions. [2020-10-13 09:49:13,288 INFO L78 Accepts]: Start accepts. Automaton has 5685 states and 6656 transitions. Word has length 289 [2020-10-13 09:49:13,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:49:13,289 INFO L479 AbstractCegarLoop]: Abstraction has 5685 states and 6656 transitions. [2020-10-13 09:49:13,289 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:49:13,290 INFO L276 IsEmpty]: Start isEmpty. Operand 5685 states and 6656 transitions. [2020-10-13 09:49:13,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2020-10-13 09:49:13,299 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:49:13,299 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, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:49:13,300 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 09:49:13,300 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:49:13,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:49:13,301 INFO L82 PathProgramCache]: Analyzing trace with hash -1572121486, now seen corresponding path program 1 times [2020-10-13 09:49:13,301 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:49:13,301 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [810289941] [2020-10-13 09:49:13,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:49:13,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:49:13,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:49:13,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:49:13,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:49:15,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:49:17,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:49:17,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 311 [2020-10-13 09:49:17,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:49:17,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3830 [2020-10-13 09:49:17,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:49:17,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:49:17,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 247 [2020-10-13 09:49:17,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 09:49:17,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:49:17,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:49:17,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:49:17,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:49:17,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:49:17,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:49:17,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:49:17,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:49:17,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:49:17,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:49:17,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:49:17,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:49:17,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:49:17,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:49:17,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:49:17,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:49:17,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:49:17,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-13 09:49:17,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:49:17,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 09:49:17,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:49:17,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:49:17,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:49:17,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:49:17,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:49:17,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-13 09:49:17,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:49:17,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:49:17,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:49:17,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-13 09:49:17,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:49:17,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-10-13 09:49:17,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:49:17,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:49:17,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:49:17,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 156 [2020-10-13 09:49:17,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:49:17,789 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 115 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-10-13 09:49:17,790 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [810289941] [2020-10-13 09:49:17,790 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:49:17,791 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:49:17,791 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919916517] [2020-10-13 09:49:17,792 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:49:17,792 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:49:17,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:49:17,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:49:17,793 INFO L87 Difference]: Start difference. First operand 5685 states and 6656 transitions. Second operand 5 states. [2020-10-13 09:49:23,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:49:23,144 INFO L93 Difference]: Finished difference Result 11398 states and 13372 transitions. [2020-10-13 09:49:23,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:49:23,146 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 299 [2020-10-13 09:49:23,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:49:23,163 INFO L225 Difference]: With dead ends: 11398 [2020-10-13 09:49:23,163 INFO L226 Difference]: Without dead ends: 5696 [2020-10-13 09:49:23,176 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:49:23,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5696 states. [2020-10-13 09:49:23,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5696 to 5685. [2020-10-13 09:49:23,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5685 states. [2020-10-13 09:49:23,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5685 states to 5685 states and 6654 transitions. [2020-10-13 09:49:23,308 INFO L78 Accepts]: Start accepts. Automaton has 5685 states and 6654 transitions. Word has length 299 [2020-10-13 09:49:23,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:49:23,309 INFO L479 AbstractCegarLoop]: Abstraction has 5685 states and 6654 transitions. [2020-10-13 09:49:23,309 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:49:23,309 INFO L276 IsEmpty]: Start isEmpty. Operand 5685 states and 6654 transitions. [2020-10-13 09:49:23,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 381 [2020-10-13 09:49:23,327 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:49:23,327 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, 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, 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] [2020-10-13 09:49:23,328 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 09:49:23,328 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:49:23,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:49:23,329 INFO L82 PathProgramCache]: Analyzing trace with hash 113974647, now seen corresponding path program 1 times [2020-10-13 09:49:23,329 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:49:23,329 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1448753880] [2020-10-13 09:49:23,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:49:23,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:49:23,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:49:23,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:49:23,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:49:26,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:49:28,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:49:28,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 392 [2020-10-13 09:49:28,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:49:28,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-13 09:49:28,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:49:28,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:49:28,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 328 [2020-10-13 09:49:28,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 09:49:28,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:49:28,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:49:28,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:49:28,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:49:28,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:49:28,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:49:28,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:49:28,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:49:28,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:49:28,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:49:28,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:49:28,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:49:28,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:49:28,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:49:28,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:49:28,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:49:28,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:49:28,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-13 09:49:28,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:49:28,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-13 09:49:28,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:49:28,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:49:28,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:49:28,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:49:28,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:49:28,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-13 09:49:28,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:49:28,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:49:28,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:49:28,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 195 [2020-10-13 09:49:28,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:49:28,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-10-13 09:49:28,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:49:28,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:49:28,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:49:28,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 189 [2020-10-13 09:49:28,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:49:29,005 INFO L134 CoverageAnalysis]: Checked inductivity of 236 backedges. 115 proven. 2 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2020-10-13 09:49:29,005 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1448753880] [2020-10-13 09:49:29,005 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:49:29,006 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:49:29,006 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839515632] [2020-10-13 09:49:29,007 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:49:29,007 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:49:29,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:49:29,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:49:29,007 INFO L87 Difference]: Start difference. First operand 5685 states and 6654 transitions. Second operand 5 states. [2020-10-13 09:49:33,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:49:33,266 INFO L93 Difference]: Finished difference Result 11384 states and 13354 transitions. [2020-10-13 09:49:33,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:49:33,268 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 380 [2020-10-13 09:49:33,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:49:33,282 INFO L225 Difference]: With dead ends: 11384 [2020-10-13 09:49:33,282 INFO L226 Difference]: Without dead ends: 5696 [2020-10-13 09:49:33,293 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:49:33,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5696 states. [2020-10-13 09:49:33,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5696 to 5685. [2020-10-13 09:49:33,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5685 states. [2020-10-13 09:49:33,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5685 states to 5685 states and 6652 transitions. [2020-10-13 09:49:33,401 INFO L78 Accepts]: Start accepts. Automaton has 5685 states and 6652 transitions. Word has length 380 [2020-10-13 09:49:33,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:49:33,402 INFO L479 AbstractCegarLoop]: Abstraction has 5685 states and 6652 transitions. [2020-10-13 09:49:33,402 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:49:33,402 INFO L276 IsEmpty]: Start isEmpty. Operand 5685 states and 6652 transitions. [2020-10-13 09:49:33,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 400 [2020-10-13 09:49:33,417 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:49:33,417 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:49:33,418 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 09:49:33,418 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:49:33,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:49:33,419 INFO L82 PathProgramCache]: Analyzing trace with hash -936943958, now seen corresponding path program 1 times [2020-10-13 09:49:33,419 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:49:33,419 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [195975780] [2020-10-13 09:49:33,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:49:33,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:49:33,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:49:33,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:49:34,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:49:35,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:49:38,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:49:38,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 411 [2020-10-13 09:49:38,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:49:38,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4687 [2020-10-13 09:49:38,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:49:38,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 09:49:38,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 347 [2020-10-13 09:49:38,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-13 09:49:38,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:49:38,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:49:38,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:49:38,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:49:38,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:49:38,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:49:38,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:49:38,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 09:49:38,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:49:38,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:49:38,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:49:38,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:49:38,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:49:38,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:49:38,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:49:38,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:49:38,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:49:38,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-13 09:49:38,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:49:38,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 09:49:38,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:49:38,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:49:38,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:49:38,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:49:38,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:49:38,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-13 09:49:38,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:49:38,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:49:38,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:49:38,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 214 [2020-10-13 09:49:38,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:49:38,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-13 09:49:38,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:49:38,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:49:38,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:49:38,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 208 [2020-10-13 09:49:38,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:49:38,733 INFO L134 CoverageAnalysis]: Checked inductivity of 236 backedges. 115 proven. 2 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2020-10-13 09:49:38,734 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [195975780] [2020-10-13 09:49:38,734 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:49:38,734 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 09:49:38,734 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055145322] [2020-10-13 09:49:38,735 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 09:49:38,735 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:49:38,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 09:49:38,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-13 09:49:38,736 INFO L87 Difference]: Start difference. First operand 5685 states and 6652 transitions. Second operand 8 states. [2020-10-13 09:49:45,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:49:45,939 INFO L93 Difference]: Finished difference Result 11428 states and 13394 transitions. [2020-10-13 09:49:45,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 09:49:45,945 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 399 [2020-10-13 09:49:45,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:49:45,959 INFO L225 Difference]: With dead ends: 11428 [2020-10-13 09:49:45,959 INFO L226 Difference]: Without dead ends: 5696 [2020-10-13 09:49:45,969 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:49:45,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5696 states. [2020-10-13 09:49:46,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5696 to 5685. [2020-10-13 09:49:46,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5685 states. [2020-10-13 09:49:46,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5685 states to 5685 states and 6650 transitions. [2020-10-13 09:49:46,051 INFO L78 Accepts]: Start accepts. Automaton has 5685 states and 6650 transitions. Word has length 399 [2020-10-13 09:49:46,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:49:46,052 INFO L479 AbstractCegarLoop]: Abstraction has 5685 states and 6650 transitions. [2020-10-13 09:49:46,052 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 09:49:46,052 INFO L276 IsEmpty]: Start isEmpty. Operand 5685 states and 6650 transitions. [2020-10-13 09:49:46,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 456 [2020-10-13 09:49:46,072 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:49:46,073 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, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:49:46,073 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 09:49:46,073 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:49:46,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:49:46,074 INFO L82 PathProgramCache]: Analyzing trace with hash -1351386441, now seen corresponding path program 1 times [2020-10-13 09:49:46,074 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:49:46,074 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1356069750] [2020-10-13 09:49:46,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:49:46,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:49:46,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:49:46,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:49:46,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:49:48,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:49:48,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 467 [2020-10-13 09:49:48,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:49:48,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2041 [2020-10-13 09:49:48,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:49:48,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:49:48,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 400 [2020-10-13 09:49:48,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-13 09:49:48,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:49:48,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:49:48,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:49:48,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:49:48,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:49:48,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:49:48,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:49:48,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:49:48,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:49:48,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:49:48,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:49:48,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:49:48,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:49:48,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:49:48,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:49:48,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:49:48,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:49:48,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 394 [2020-10-13 09:49:48,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:49:48,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 245 [2020-10-13 09:49:48,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:49:48,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:49:48,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:49:48,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 385 [2020-10-13 09:49:48,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:49:48,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:49:48,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:49:48,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:49:48,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:49:48,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-13 09:49:48,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:49:49,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-10-13 09:49:49,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:49:49,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:49:49,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:49:49,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-13 09:49:49,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:49:49,212 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 56 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:49:49,213 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1356069750] [2020-10-13 09:49:49,213 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:49:49,213 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:49:49,213 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229768407] [2020-10-13 09:49:49,214 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:49:49,214 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:49:49,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:49:49,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:49:49,215 INFO L87 Difference]: Start difference. First operand 5685 states and 6650 transitions. Second operand 5 states. [2020-10-13 09:49:53,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:49:53,853 INFO L93 Difference]: Finished difference Result 11407 states and 13377 transitions. [2020-10-13 09:49:53,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:49:53,855 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 455 [2020-10-13 09:49:53,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:49:53,870 INFO L225 Difference]: With dead ends: 11407 [2020-10-13 09:49:53,870 INFO L226 Difference]: Without dead ends: 5696 [2020-10-13 09:49:53,879 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:49:53,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5696 states. [2020-10-13 09:49:53,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5696 to 5685. [2020-10-13 09:49:53,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5685 states. [2020-10-13 09:49:53,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5685 states to 5685 states and 6645 transitions. [2020-10-13 09:49:53,959 INFO L78 Accepts]: Start accepts. Automaton has 5685 states and 6645 transitions. Word has length 455 [2020-10-13 09:49:53,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:49:53,960 INFO L479 AbstractCegarLoop]: Abstraction has 5685 states and 6645 transitions. [2020-10-13 09:49:53,960 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:49:53,960 INFO L276 IsEmpty]: Start isEmpty. Operand 5685 states and 6645 transitions. [2020-10-13 09:49:53,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 498 [2020-10-13 09:49:53,970 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:49:53,970 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:49:53,971 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 09:49:53,971 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:49:53,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:49:53,971 INFO L82 PathProgramCache]: Analyzing trace with hash -245500028, now seen corresponding path program 1 times [2020-10-13 09:49:53,972 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:49:53,972 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [882494631] [2020-10-13 09:49:53,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:49:54,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:49:54,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:49:54,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:49:54,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:49:55,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:49:59,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:49:59,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 511 [2020-10-13 09:49:59,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:49:59,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-13 09:49:59,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:49:59,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:49:59,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 444 [2020-10-13 09:49:59,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 09:49:59,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:49:59,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:49:59,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:49:59,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:49:59,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:49:59,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:49:59,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:49:59,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:49:59,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:49:59,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:49:59,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:49:59,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:49:59,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:49:59,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:49:59,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:49:59,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:49:59,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:49:59,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-13 09:49:59,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:49:59,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-13 09:49:59,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:49:59,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:49:59,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:49:59,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:49:59,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:49:59,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-13 09:49:59,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:49:59,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:49:59,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:49:59,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 314 [2020-10-13 09:49:59,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:49:59,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 292 [2020-10-13 09:49:59,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:49:59,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:49:59,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:49:59,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 305 [2020-10-13 09:49:59,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:49:59,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:49:59,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:49:59,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:49:59,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:49:59,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 09:49:59,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:49:59,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-13 09:49:59,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:49:59,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:49:59,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:49:59,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 09:49:59,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:50:00,094 INFO L134 CoverageAnalysis]: Checked inductivity of 236 backedges. 115 proven. 2 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2020-10-13 09:50:00,095 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [882494631] [2020-10-13 09:50:00,095 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:50:00,095 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:50:00,095 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869875499] [2020-10-13 09:50:00,096 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:50:00,096 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:50:00,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:50:00,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:50:00,097 INFO L87 Difference]: Start difference. First operand 5685 states and 6645 transitions. Second operand 5 states. [2020-10-13 09:50:04,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:50:04,666 INFO L93 Difference]: Finished difference Result 11388 states and 13341 transitions. [2020-10-13 09:50:04,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:50:04,671 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 497 [2020-10-13 09:50:04,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:50:04,684 INFO L225 Difference]: With dead ends: 11388 [2020-10-13 09:50:04,684 INFO L226 Difference]: Without dead ends: 5696 [2020-10-13 09:50:04,691 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:50:04,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5696 states. [2020-10-13 09:50:04,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5696 to 5685. [2020-10-13 09:50:04,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5685 states. [2020-10-13 09:50:04,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5685 states to 5685 states and 6643 transitions. [2020-10-13 09:50:04,758 INFO L78 Accepts]: Start accepts. Automaton has 5685 states and 6643 transitions. Word has length 497 [2020-10-13 09:50:04,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:50:04,759 INFO L479 AbstractCegarLoop]: Abstraction has 5685 states and 6643 transitions. [2020-10-13 09:50:04,759 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:50:04,759 INFO L276 IsEmpty]: Start isEmpty. Operand 5685 states and 6643 transitions. [2020-10-13 09:50:04,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 555 [2020-10-13 09:50:04,770 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:50:04,770 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, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:50:04,771 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 09:50:04,771 INFO L427 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:50:04,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:50:04,771 INFO L82 PathProgramCache]: Analyzing trace with hash -943437660, now seen corresponding path program 1 times [2020-10-13 09:50:04,772 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:50:04,772 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [82893864] [2020-10-13 09:50:04,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:50:04,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:50:04,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:50:04,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:50:05,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:50:09,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:50:09,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:50:09,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 568 [2020-10-13 09:50:09,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:50:09,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-13 09:50:09,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:50:09,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:50:09,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 501 [2020-10-13 09:50:09,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-13 09:50:09,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:50:09,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:50:09,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:50:09,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:50:09,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:50:09,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:50:09,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:50:09,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:50:09,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:50:09,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:50:09,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:50:09,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:50:09,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:50:09,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:50:09,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:50:09,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:50:09,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:50:09,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-13 09:50:09,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:50:09,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 09:50:09,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:50:09,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:50:09,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:50:09,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:50:09,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:50:09,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-13 09:50:10,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:50:10,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:50:10,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:50:10,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 419 [2020-10-13 09:50:10,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:50:10,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 241 [2020-10-13 09:50:10,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:50:10,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:50:10,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:50:10,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 410 [2020-10-13 09:50:10,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:50:10,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:50:10,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:50:10,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:50:10,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:50:10,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-13 09:50:10,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:50:10,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-13 09:50:10,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:50:10,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:50:10,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:50:10,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-13 09:50:10,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:50:10,606 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 115 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-10-13 09:50:10,607 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [82893864] [2020-10-13 09:50:10,607 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:50:10,607 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:50:10,607 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040429811] [2020-10-13 09:50:10,608 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:50:10,608 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:50:10,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:50:10,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:50:10,609 INFO L87 Difference]: Start difference. First operand 5685 states and 6643 transitions. Second operand 5 states. [2020-10-13 09:50:18,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:50:18,043 INFO L93 Difference]: Finished difference Result 17052 states and 20232 transitions. [2020-10-13 09:50:18,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:50:18,044 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 554 [2020-10-13 09:50:18,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:50:18,072 INFO L225 Difference]: With dead ends: 17052 [2020-10-13 09:50:18,073 INFO L226 Difference]: Without dead ends: 11373 [2020-10-13 09:50:18,080 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:50:18,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11373 states. [2020-10-13 09:50:18,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11373 to 11362. [2020-10-13 09:50:18,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11362 states. [2020-10-13 09:50:18,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11362 states to 11362 states and 13304 transitions. [2020-10-13 09:50:18,241 INFO L78 Accepts]: Start accepts. Automaton has 11362 states and 13304 transitions. Word has length 554 [2020-10-13 09:50:18,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:50:18,242 INFO L479 AbstractCegarLoop]: Abstraction has 11362 states and 13304 transitions. [2020-10-13 09:50:18,242 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:50:18,242 INFO L276 IsEmpty]: Start isEmpty. Operand 11362 states and 13304 transitions. [2020-10-13 09:50:18,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 621 [2020-10-13 09:50:18,266 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:50:18,267 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, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:50:18,267 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 09:50:18,267 INFO L427 AbstractCegarLoop]: === Iteration 17 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:50:18,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:50:18,268 INFO L82 PathProgramCache]: Analyzing trace with hash 1852432745, now seen corresponding path program 1 times [2020-10-13 09:50:18,268 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:50:18,269 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [70036558] [2020-10-13 09:50:18,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:50:18,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:50:18,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:50:18,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:50:20,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:50:21,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:50:23,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:50:23,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 634 [2020-10-13 09:50:23,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:50:23,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-10-13 09:50:23,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:50:23,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 09:50:23,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 564 [2020-10-13 09:50:23,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-13 09:50:23,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:50:23,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:50:23,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:50:23,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:50:23,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:50:23,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:50:23,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:50:23,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 09:50:23,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:50:23,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:50:23,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:50:23,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:50:23,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:50:23,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:50:23,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:50:23,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:50:24,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:50:24,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 561 [2020-10-13 09:50:24,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:50:24,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 229 [2020-10-13 09:50:24,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:50:24,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:50:24,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:50:24,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 549 [2020-10-13 09:50:24,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:50:24,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:50:24,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:50:24,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:50:24,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:50:24,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 273 [2020-10-13 09:50:24,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:50:24,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-13 09:50:24,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:50:24,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:50:24,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:50:24,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 264 [2020-10-13 09:50:24,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:50:24,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-13 09:50:24,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:50:24,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:50:24,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:50:24,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-13 09:50:24,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:50:24,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 09:50:24,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:50:24,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:50:24,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:50:24,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-13 09:50:24,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:50:24,713 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 56 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:50:24,713 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [70036558] [2020-10-13 09:50:24,713 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:50:24,714 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 09:50:24,714 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454056707] [2020-10-13 09:50:24,715 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 09:50:24,715 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:50:24,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 09:50:24,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-13 09:50:24,715 INFO L87 Difference]: Start difference. First operand 11362 states and 13304 transitions. Second operand 8 states. [2020-10-13 09:50:31,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:50:31,182 INFO L93 Difference]: Finished difference Result 22821 states and 26810 transitions. [2020-10-13 09:50:31,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 09:50:31,183 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 620 [2020-10-13 09:50:31,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:50:31,203 INFO L225 Difference]: With dead ends: 22821 [2020-10-13 09:50:31,203 INFO L226 Difference]: Without dead ends: 11373 [2020-10-13 09:50:31,217 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:50:31,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11373 states. [2020-10-13 09:50:31,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11373 to 11362. [2020-10-13 09:50:31,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11362 states. [2020-10-13 09:50:31,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11362 states to 11362 states and 13263 transitions. [2020-10-13 09:50:31,360 INFO L78 Accepts]: Start accepts. Automaton has 11362 states and 13263 transitions. Word has length 620 [2020-10-13 09:50:31,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:50:31,361 INFO L479 AbstractCegarLoop]: Abstraction has 11362 states and 13263 transitions. [2020-10-13 09:50:31,361 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 09:50:31,361 INFO L276 IsEmpty]: Start isEmpty. Operand 11362 states and 13263 transitions. [2020-10-13 09:50:31,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 860 [2020-10-13 09:50:31,388 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:50:31,389 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:50:31,390 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-13 09:50:31,390 INFO L427 AbstractCegarLoop]: === Iteration 18 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:50:31,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:50:31,390 INFO L82 PathProgramCache]: Analyzing trace with hash -1235960430, now seen corresponding path program 1 times [2020-10-13 09:50:31,391 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:50:31,391 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [969912242] [2020-10-13 09:50:31,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:50:31,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:50:31,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:50:31,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:50:33,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:50:33,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:50:34,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:50:35,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:50:36,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:50:36,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:50:36,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 877 [2020-10-13 09:50:36,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 09:50:36,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-10-13 09:50:36,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:50:36,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:50:36,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 807 [2020-10-13 09:50:36,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 09:50:36,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:50:36,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:50:36,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:50:36,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:50:36,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:50:36,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:50:36,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:50:36,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 09:50:36,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:50:36,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:50:36,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:50:36,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:50:36,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:50:36,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:50:36,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:50:36,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:50:36,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:50:36,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-13 09:50:36,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:50:36,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 09:50:36,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:50:36,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:50:36,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:50:36,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:50:36,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:50:36,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-13 09:50:36,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:50:36,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:50:36,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:50:36,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-13 09:50:36,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:50:36,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 09:50:36,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:50:36,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:50:36,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:50:36,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:50:36,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:50:36,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2020-10-13 09:50:36,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:50:36,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:50:37,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:50:37,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 599 [2020-10-13 09:50:37,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:50:37,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 265 [2020-10-13 09:50:37,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:50:37,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:50:37,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:50:37,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 587 [2020-10-13 09:50:37,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:50:37,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:50:37,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:50:37,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:50:37,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:50:37,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 311 [2020-10-13 09:50:37,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:50:37,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-10-13 09:50:37,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:50:37,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:50:37,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:50:37,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 302 [2020-10-13 09:50:37,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:50:37,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-13 09:50:37,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:50:37,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:50:37,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:50:37,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-13 09:50:37,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:50:37,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-13 09:50:37,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:50:37,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:50:37,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:50:37,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-13 09:50:37,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:50:38,012 INFO L134 CoverageAnalysis]: Checked inductivity of 446 backedges. 174 proven. 3 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2020-10-13 09:50:38,013 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [969912242] [2020-10-13 09:50:38,013 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:50:38,013 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:50:38,013 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161618649] [2020-10-13 09:50:38,014 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:50:38,015 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:50:38,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:50:38,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:50:38,015 INFO L87 Difference]: Start difference. First operand 11362 states and 13263 transitions. Second operand 5 states. [2020-10-13 09:50:42,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:50:42,657 INFO L93 Difference]: Finished difference Result 22748 states and 26602 transitions. [2020-10-13 09:50:42,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:50:42,664 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 859 [2020-10-13 09:50:42,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:50:42,687 INFO L225 Difference]: With dead ends: 22748 [2020-10-13 09:50:42,688 INFO L226 Difference]: Without dead ends: 11373 [2020-10-13 09:50:42,701 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:50:42,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11373 states. [2020-10-13 09:50:42,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11373 to 11362. [2020-10-13 09:50:42,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11362 states. [2020-10-13 09:50:42,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11362 states to 11362 states and 13258 transitions. [2020-10-13 09:50:42,852 INFO L78 Accepts]: Start accepts. Automaton has 11362 states and 13258 transitions. Word has length 859 [2020-10-13 09:50:42,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:50:42,853 INFO L479 AbstractCegarLoop]: Abstraction has 11362 states and 13258 transitions. [2020-10-13 09:50:42,853 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:50:42,854 INFO L276 IsEmpty]: Start isEmpty. Operand 11362 states and 13258 transitions. [2020-10-13 09:50:42,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 888 [2020-10-13 09:50:42,880 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:50:42,881 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:50:42,881 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-13 09:50:42,881 INFO L427 AbstractCegarLoop]: === Iteration 19 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:50:42,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:50:42,882 INFO L82 PathProgramCache]: Analyzing trace with hash 1640588618, now seen corresponding path program 1 times [2020-10-13 09:50:42,882 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:50:42,882 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1755069888] [2020-10-13 09:50:42,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:50:43,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:50:43,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:50:43,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:50:43,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:50:48,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:50:48,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 903 [2020-10-13 09:50:48,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:50:48,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 09:50:48,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:50:48,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 09:50:48,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 09:50:48,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-13 09:50:48,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:50:48,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:50:48,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:50:48,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:50:48,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:50:48,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:50:48,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:50:48,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:50:48,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:50:48,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:50:48,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:50:48,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:50:48,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:50:48,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:50:48,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:50:48,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:50:48,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:50:48,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-13 09:50:48,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:50:48,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-10-13 09:50:48,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:50:48,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:50:48,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:50:48,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-13 09:50:48,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:50:48,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-13 09:50:48,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:50:48,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:50:48,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:50:48,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 706 [2020-10-13 09:50:48,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:50:48,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 206 [2020-10-13 09:50:48,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:50:48,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:50:48,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 703 [2020-10-13 09:50:48,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:50:48,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:50:48,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:50:48,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:50:48,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:50:49,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:50:49,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 418 [2020-10-13 09:50:49,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:50:49,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-13 09:50:49,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:50:49,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:50:49,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:50:49,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:50:49,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:50:49,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-13 09:50:49,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:50:49,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:50:49,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:50:49,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 191 [2020-10-13 09:50:49,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:50:49,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-13 09:50:49,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:50:49,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:50:49,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:50:49,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:50:49,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:50:49,910 INFO L134 CoverageAnalysis]: Checked inductivity of 236 backedges. 114 proven. 117 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-13 09:50:49,911 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1755069888] [2020-10-13 09:50:49,911 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:50:49,911 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:50:49,911 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223936061] [2020-10-13 09:50:49,912 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:50:49,912 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:50:49,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:50:49,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:50:49,913 INFO L87 Difference]: Start difference. First operand 11362 states and 13258 transitions. Second operand 7 states. [2020-10-13 09:50:57,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:50:57,743 INFO L93 Difference]: Finished difference Result 24263 states and 28438 transitions. [2020-10-13 09:50:57,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 09:50:57,745 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 887 [2020-10-13 09:50:57,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:50:57,776 INFO L225 Difference]: With dead ends: 24263 [2020-10-13 09:50:57,776 INFO L226 Difference]: Without dead ends: 12907 [2020-10-13 09:50:57,795 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-13 09:50:57,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12907 states. [2020-10-13 09:50:58,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12907 to 12885. [2020-10-13 09:50:58,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12885 states. [2020-10-13 09:50:58,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12885 states to 12885 states and 15018 transitions. [2020-10-13 09:50:58,122 INFO L78 Accepts]: Start accepts. Automaton has 12885 states and 15018 transitions. Word has length 887 [2020-10-13 09:50:58,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:50:58,123 INFO L479 AbstractCegarLoop]: Abstraction has 12885 states and 15018 transitions. [2020-10-13 09:50:58,123 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:50:58,123 INFO L276 IsEmpty]: Start isEmpty. Operand 12885 states and 15018 transitions. [2020-10-13 09:50:58,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 957 [2020-10-13 09:50:58,156 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:50:58,157 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:50:58,157 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-13 09:50:58,157 INFO L427 AbstractCegarLoop]: === Iteration 20 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:50:58,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:50:58,158 INFO L82 PathProgramCache]: Analyzing trace with hash 1703105422, now seen corresponding path program 1 times [2020-10-13 09:50:58,158 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:50:58,158 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2119274295] [2020-10-13 09:50:58,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:50:58,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:50:58,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:50:58,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:00,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:01,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:01,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:03,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:51:03,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 974 [2020-10-13 09:51:03,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 09:51:03,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-13 09:51:03,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:51:03,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:51:03,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 904 [2020-10-13 09:51:03,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-13 09:51:03,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:51:03,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:51:03,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:51:03,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:03,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:51:03,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:51:03,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:51:03,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:51:03,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:51:03,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:51:03,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:51:03,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:51:03,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:51:03,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:51:03,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:51:03,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:03,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:51:03,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-13 09:51:03,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:51:03,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 09:51:03,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:51:03,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:51:03,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:51:03,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:51:03,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:51:03,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-13 09:51:03,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:51:03,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:03,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:51:03,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-13 09:51:03,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:51:03,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 09:51:03,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:51:03,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:51:03,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:51:03,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:51:03,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:51:03,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2020-10-13 09:51:03,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:51:03,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:03,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:51:03,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 706 [2020-10-13 09:51:03,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:51:03,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 305 [2020-10-13 09:51:03,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:51:03,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:51:03,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:51:03,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 694 [2020-10-13 09:51:03,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:51:04,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:51:04,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:51:04,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:04,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:51:04,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 418 [2020-10-13 09:51:04,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:51:04,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 427 [2020-10-13 09:51:04,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:51:04,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:51:04,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:51:04,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 409 [2020-10-13 09:51:04,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:51:04,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-13 09:51:04,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:51:04,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:04,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:51:04,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 191 [2020-10-13 09:51:04,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:51:04,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 201 [2020-10-13 09:51:04,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:51:04,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:51:04,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:51:04,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 185 [2020-10-13 09:51:04,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:51:05,731 INFO L134 CoverageAnalysis]: Checked inductivity of 431 backedges. 174 proven. 3 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked. [2020-10-13 09:51:05,732 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2119274295] [2020-10-13 09:51:05,732 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:51:05,732 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:51:05,732 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206855222] [2020-10-13 09:51:05,733 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:51:05,733 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:51:05,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:51:05,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:51:05,734 INFO L87 Difference]: Start difference. First operand 12885 states and 15018 transitions. Second operand 5 states.