/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --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/Problem17_label49.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 04:06:27,980 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 04:06:27,983 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 04:06:28,010 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 04:06:28,010 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 04:06:28,011 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 04:06:28,013 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 04:06:28,016 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 04:06:28,018 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 04:06:28,019 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 04:06:28,020 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 04:06:28,022 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 04:06:28,022 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 04:06:28,023 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 04:06:28,025 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 04:06:28,026 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 04:06:28,033 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 04:06:28,034 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 04:06:28,036 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 04:06:28,041 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 04:06:28,043 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 04:06:28,046 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 04:06:28,047 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 04:06:28,048 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 04:06:28,053 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 04:06:28,054 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 04:06:28,055 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 04:06:28,059 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 04:06:28,060 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 04:06:28,061 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 04:06:28,061 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 04:06:28,062 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 04:06:28,063 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 04:06:28,066 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 04:06:28,067 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 04:06:28,068 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 04:06:28,069 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 04:06:28,070 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 04:06:28,070 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 04:06:28,072 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 04:06:28,074 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 04:06:28,075 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 [2020-10-14 04:06:28,136 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 04:06:28,137 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 04:06:28,139 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 04:06:28,139 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 04:06:28,140 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 04:06:28,141 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 04:06:28,141 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 04:06:28,141 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 04:06:28,141 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 04:06:28,142 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 04:06:28,142 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 04:06:28,142 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 04:06:28,142 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 04:06:28,143 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 04:06:28,143 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 04:06:28,144 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 04:06:28,144 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 04:06:28,145 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 04:06:28,145 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 04:06:28,145 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 04:06:28,145 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 04:06:28,146 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 04:06:28,146 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 04:06:28,146 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 04:06:28,146 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 04:06:28,146 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 04:06:28,147 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 04:06:28,147 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 04:06:28,147 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 04:06:28,147 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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 04:06:28,507 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 04:06:28,520 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 04:06:28,525 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 04:06:28,526 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 04:06:28,527 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 04:06:28,528 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label49.c [2020-10-14 04:06:28,608 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/82a66b742/9ef0c107e54b461483519139583c30da/FLAGa3ab6b67e [2020-10-14 04:06:29,476 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 04:06:29,477 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem17_label49.c [2020-10-14 04:06:29,504 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/82a66b742/9ef0c107e54b461483519139583c30da/FLAGa3ab6b67e [2020-10-14 04:06:30,023 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/82a66b742/9ef0c107e54b461483519139583c30da [2020-10-14 04:06:30,034 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 04:06:30,036 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 04:06:30,038 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 04:06:30,038 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 04:06:30,042 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 04:06:30,044 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:06:30" (1/1) ... [2020-10-14 04:06:30,050 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@217a2c60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:06:30, skipping insertion in model container [2020-10-14 04:06:30,050 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:06:30" (1/1) ... [2020-10-14 04:06:30,059 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 04:06:30,162 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 04:06:31,708 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 04:06:31,718 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 04:06:32,225 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 04:06:32,259 INFO L208 MainTranslator]: Completed translation [2020-10-14 04:06:32,260 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:06:32 WrapperNode [2020-10-14 04:06:32,261 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 04:06:32,262 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 04:06:32,262 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 04:06:32,262 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 04:06:32,282 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:06:32" (1/1) ... [2020-10-14 04:06:32,284 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:06:32" (1/1) ... [2020-10-14 04:06:32,356 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:06:32" (1/1) ... [2020-10-14 04:06:32,356 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:06:32" (1/1) ... [2020-10-14 04:06:32,461 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:06:32" (1/1) ... [2020-10-14 04:06:32,484 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:06:32" (1/1) ... [2020-10-14 04:06:32,520 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:06:32" (1/1) ... [2020-10-14 04:06:32,549 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 04:06:32,549 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 04:06:32,550 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 04:06:32,550 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 04:06:32,551 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:06:32" (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 [2020-10-14 04:06:32,628 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 04:06:32,628 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 04:06:32,629 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 04:06:32,629 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 04:06:32,629 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 04:06:32,629 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 04:06:32,629 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 04:06:32,630 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 04:06:32,630 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 04:06:32,631 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 04:06:32,631 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 04:06:32,631 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 04:06:32,631 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 04:06:41,819 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 04:06:41,820 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 04:06:41,835 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:06:41 BoogieIcfgContainer [2020-10-14 04:06:41,836 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 04:06:41,838 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 04:06:41,839 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 04:06:41,842 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 04:06:41,843 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 04:06:30" (1/3) ... [2020-10-14 04:06:41,844 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5848a09e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:06:41, skipping insertion in model container [2020-10-14 04:06:41,844 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:06:32" (2/3) ... [2020-10-14 04:06:41,844 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5848a09e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:06:41, skipping insertion in model container [2020-10-14 04:06:41,845 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:06:41" (3/3) ... [2020-10-14 04:06:41,846 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem17_label49.c [2020-10-14 04:06:41,857 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 04:06:41,869 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 04:06:41,884 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 04:06:41,915 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 04:06:41,915 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 04:06:41,915 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 04:06:41,916 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 04:06:41,916 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 04:06:41,916 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 04:06:41,916 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 04:06:41,916 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 04:06:42,020 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states. [2020-10-14 04:06:42,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-14 04:06:42,027 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:06:42,028 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] [2020-10-14 04:06:42,028 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:06:42,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:06:42,035 INFO L82 PathProgramCache]: Analyzing trace with hash -1643264031, now seen corresponding path program 1 times [2020-10-14 04:06:42,044 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:06:42,045 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2099466000] [2020-10-14 04:06:42,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:06:42,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:06:42,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:06:42,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:06:42,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-14 04:06:42,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:06:42,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 323 [2020-10-14 04:06:42,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:06:42,539 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:06:42,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 04:06:42,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 04:06:42,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 04:06:42,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 04:06:42,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:06:42,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:06:42,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:06:42,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:06:42,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:06:42,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:06:42,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 04:06:42,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:06:42,638 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:06:42,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:06:42,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:06:42,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 04:06:42,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:06:42,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:06:42,660 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2099466000] [2020-10-14 04:06:42,662 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:06:42,662 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 04:06:42,663 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185709304] [2020-10-14 04:06:42,668 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 04:06:42,668 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:06:42,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 04:06:42,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 04:06:42,685 INFO L87 Difference]: Start difference. First operand 603 states. Second operand 4 states. [2020-10-14 04:06:55,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:06:55,117 INFO L93 Difference]: Finished difference Result 1689 states and 3086 transitions. [2020-10-14 04:06:55,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:06:55,120 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2020-10-14 04:06:55,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:06:55,154 INFO L225 Difference]: With dead ends: 1689 [2020-10-14 04:06:55,154 INFO L226 Difference]: Without dead ends: 1009 [2020-10-14 04:06:55,172 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:06:55,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1009 states. [2020-10-14 04:06:55,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1009 to 991. [2020-10-14 04:06:55,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 991 states. [2020-10-14 04:06:55,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 991 states to 991 states and 1526 transitions. [2020-10-14 04:06:55,288 INFO L78 Accepts]: Start accepts. Automaton has 991 states and 1526 transitions. Word has length 21 [2020-10-14 04:06:55,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:06:55,289 INFO L479 AbstractCegarLoop]: Abstraction has 991 states and 1526 transitions. [2020-10-14 04:06:55,289 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 04:06:55,289 INFO L276 IsEmpty]: Start isEmpty. Operand 991 states and 1526 transitions. [2020-10-14 04:06:55,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-14 04:06:55,294 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:06:55,294 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:06:55,294 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 04:06:55,295 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:06:55,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:06:55,295 INFO L82 PathProgramCache]: Analyzing trace with hash -575527753, now seen corresponding path program 1 times [2020-10-14 04:06:55,295 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:06:55,296 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [197655734] [2020-10-14 04:06:55,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:06:55,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:06:55,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:06:55,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:06:56,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:06:56,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-14 04:06:56,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:06:56,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 938 [2020-10-14 04:06:56,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:06:56,316 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:06:56,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:06:56,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-14 04:06:56,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 04:06:56,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 04:06:56,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:06:56,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:06:56,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:06:56,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:06:56,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:06:56,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:06:56,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:06:56,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:06:56,393 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:06:56,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:06:56,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:06:56,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:06:56,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:06:56,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:06:56,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:06:56,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:06:56,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:06:56,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 04:06:56,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:06:56,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-14 04:06:56,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:06:56,663 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:06:56,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:06:56,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:06:56,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-14 04:06:56,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 13 [2020-10-14 04:06:56,713 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:06:56,713 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [197655734] [2020-10-14 04:06:56,714 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:06:56,714 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:06:56,714 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577325624] [2020-10-14 04:06:56,717 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:06:56,717 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:06:56,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:06:56,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:06:56,719 INFO L87 Difference]: Start difference. First operand 991 states and 1526 transitions. Second operand 5 states. [2020-10-14 04:07:08,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:07:08,270 INFO L93 Difference]: Finished difference Result 2864 states and 4440 transitions. [2020-10-14 04:07:08,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:07:08,272 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 92 [2020-10-14 04:07:08,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:07:08,283 INFO L225 Difference]: With dead ends: 2864 [2020-10-14 04:07:08,283 INFO L226 Difference]: Without dead ends: 1879 [2020-10-14 04:07:08,287 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 [2020-10-14 04:07:08,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1879 states. [2020-10-14 04:07:08,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1879 to 1875. [2020-10-14 04:07:08,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1875 states. [2020-10-14 04:07:08,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1875 states to 1875 states and 2568 transitions. [2020-10-14 04:07:08,349 INFO L78 Accepts]: Start accepts. Automaton has 1875 states and 2568 transitions. Word has length 92 [2020-10-14 04:07:08,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:07:08,350 INFO L479 AbstractCegarLoop]: Abstraction has 1875 states and 2568 transitions. [2020-10-14 04:07:08,350 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:07:08,350 INFO L276 IsEmpty]: Start isEmpty. Operand 1875 states and 2568 transitions. [2020-10-14 04:07:08,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-14 04:07:08,353 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:07:08,354 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 04:07:08,354 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 04:07:08,354 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:07:08,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:07:08,355 INFO L82 PathProgramCache]: Analyzing trace with hash -853153015, now seen corresponding path program 1 times [2020-10-14 04:07:08,355 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:07:08,355 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [785047494] [2020-10-14 04:07:08,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:07:08,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:07:08,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:07:08,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:07:08,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-14 04:07:08,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:07:08,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 592 [2020-10-14 04:07:08,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:07:08,981 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:07:08,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 04:07:08,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 04:07:08,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-14 04:07:08,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:07:09,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:07:09,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:07:09,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:07:09,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:07:09,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:07:09,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:07:09,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 04:07:09,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:07:09,071 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:07:09,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:07:09,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:07:09,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 04:07:09,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:07:09,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:07:09,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:07:09,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:07:09,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:07:09,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 04:07:09,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:07:09,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 232 [2020-10-14 04:07:09,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:07:09,341 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:07:09,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 04:07:09,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:07:09,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-14 04:07:09,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:07:09,420 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:07:09,421 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [785047494] [2020-10-14 04:07:09,421 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:07:09,421 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:07:09,422 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97857538] [2020-10-14 04:07:09,422 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 04:07:09,422 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:07:09,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 04:07:09,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-14 04:07:09,423 INFO L87 Difference]: Start difference. First operand 1875 states and 2568 transitions. Second operand 8 states. [2020-10-14 04:07:24,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:07:24,921 INFO L93 Difference]: Finished difference Result 4228 states and 6069 transitions. [2020-10-14 04:07:24,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 04:07:24,923 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 95 [2020-10-14 04:07:24,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:07:24,938 INFO L225 Difference]: With dead ends: 4228 [2020-10-14 04:07:24,939 INFO L226 Difference]: Without dead ends: 2359 [2020-10-14 04:07:24,943 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-14 04:07:24,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2359 states. [2020-10-14 04:07:24,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2359 to 1891. [2020-10-14 04:07:24,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1891 states. [2020-10-14 04:07:25,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1891 states to 1891 states and 2547 transitions. [2020-10-14 04:07:25,000 INFO L78 Accepts]: Start accepts. Automaton has 1891 states and 2547 transitions. Word has length 95 [2020-10-14 04:07:25,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:07:25,001 INFO L479 AbstractCegarLoop]: Abstraction has 1891 states and 2547 transitions. [2020-10-14 04:07:25,001 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 04:07:25,001 INFO L276 IsEmpty]: Start isEmpty. Operand 1891 states and 2547 transitions. [2020-10-14 04:07:25,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-14 04:07:25,004 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:07:25,004 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 04:07:25,005 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 04:07:25,005 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:07:25,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:07:25,006 INFO L82 PathProgramCache]: Analyzing trace with hash -530986166, now seen corresponding path program 1 times [2020-10-14 04:07:25,006 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:07:25,006 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [364533424] [2020-10-14 04:07:25,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:07:25,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:07:25,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:07:25,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:07:26,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:07:26,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-14 04:07:26,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:07:26,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1784 [2020-10-14 04:07:26,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:07:26,832 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:07:26,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:07:26,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 119 [2020-10-14 04:07:26,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 04:07:26,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 04:07:26,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:07:26,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:07:26,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:07:26,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:07:26,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:07:26,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:07:26,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:07:26,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:07:26,920 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:07:26,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:07:26,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:07:26,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:07:26,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:07:26,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:07:26,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:07:26,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:07:27,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:07:27,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-14 04:07:27,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:07:27,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-10-14 04:07:27,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:07:27,111 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:07:27,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:07:27,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:07:27,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-14 04:07:27,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:07:27,193 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:07:27,194 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [364533424] [2020-10-14 04:07:27,194 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:07:27,195 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:07:27,195 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133525842] [2020-10-14 04:07:27,197 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:07:27,197 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:07:27,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:07:27,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:07:27,198 INFO L87 Difference]: Start difference. First operand 1891 states and 2547 transitions. Second operand 5 states. [2020-10-14 04:07:41,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:07:41,143 INFO L93 Difference]: Finished difference Result 4694 states and 6623 transitions. [2020-10-14 04:07:41,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:07:41,148 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 130 [2020-10-14 04:07:41,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:07:41,168 INFO L225 Difference]: With dead ends: 4694 [2020-10-14 04:07:41,168 INFO L226 Difference]: Without dead ends: 3247 [2020-10-14 04:07:41,174 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 [2020-10-14 04:07:41,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3247 states. [2020-10-14 04:07:41,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3247 to 3241. [2020-10-14 04:07:41,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3241 states. [2020-10-14 04:07:41,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3241 states to 3241 states and 4258 transitions. [2020-10-14 04:07:41,339 INFO L78 Accepts]: Start accepts. Automaton has 3241 states and 4258 transitions. Word has length 130 [2020-10-14 04:07:41,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:07:41,340 INFO L479 AbstractCegarLoop]: Abstraction has 3241 states and 4258 transitions. [2020-10-14 04:07:41,340 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:07:41,340 INFO L276 IsEmpty]: Start isEmpty. Operand 3241 states and 4258 transitions. [2020-10-14 04:07:41,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-10-14 04:07:41,343 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:07:41,344 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:07:41,344 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 04:07:41,344 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:07:41,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:07:41,345 INFO L82 PathProgramCache]: Analyzing trace with hash 603802843, now seen corresponding path program 1 times [2020-10-14 04:07:41,345 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:07:41,345 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1024770365] [2020-10-14 04:07:41,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:07:41,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:07:41,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:07:41,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:07:41,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:07:43,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:07:45,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:07:45,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:07:45,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:07:46,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:07:46,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-10-14 04:07:46,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 04:07:46,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-14 04:07:46,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:07:46,410 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:07:46,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:07:46,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-14 04:07:46,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-14 04:07:46,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:07:46,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:07:46,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:07:46,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:07:46,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:07:46,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:07:46,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:07:46,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:07:46,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:07:46,512 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:07:46,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:07:46,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:07:46,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:07:46,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:07:46,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:07:46,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:07:46,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:07:46,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:07:46,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 04:07:46,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:07:46,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-14 04:07:46,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:07:46,622 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:07:46,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:07:46,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:07:46,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-14 04:07:46,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 04:07:46,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-14 04:07:46,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:07:46,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:07:46,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:07:46,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-14 04:07:46,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:07:46,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-14 04:07:46,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:07:46,801 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:07:46,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:07:46,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:07:46,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-14 04:07:46,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:07:46,882 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 99 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 04:07:46,882 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1024770365] [2020-10-14 04:07:46,883 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:07:46,883 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:07:46,883 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576644448] [2020-10-14 04:07:46,885 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:07:46,885 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:07:46,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:07:46,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:07:46,886 INFO L87 Difference]: Start difference. First operand 3241 states and 4258 transitions. Second operand 7 states. [2020-10-14 04:08:00,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:08:00,670 INFO L93 Difference]: Finished difference Result 7474 states and 10173 transitions. [2020-10-14 04:08:00,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 04:08:00,675 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 172 [2020-10-14 04:08:00,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:08:00,695 INFO L225 Difference]: With dead ends: 7474 [2020-10-14 04:08:00,695 INFO L226 Difference]: Without dead ends: 3747 [2020-10-14 04:08:00,705 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 04:08:00,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3747 states. [2020-10-14 04:08:00,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3747 to 3733. [2020-10-14 04:08:00,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3733 states. [2020-10-14 04:08:00,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3733 states to 3733 states and 4487 transitions. [2020-10-14 04:08:00,814 INFO L78 Accepts]: Start accepts. Automaton has 3733 states and 4487 transitions. Word has length 172 [2020-10-14 04:08:00,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:08:00,815 INFO L479 AbstractCegarLoop]: Abstraction has 3733 states and 4487 transitions. [2020-10-14 04:08:00,815 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:08:00,815 INFO L276 IsEmpty]: Start isEmpty. Operand 3733 states and 4487 transitions. [2020-10-14 04:08:00,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2020-10-14 04:08:00,821 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:08:00,821 INFO L422 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:08:00,821 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 04:08:00,821 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:08:00,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:08:00,822 INFO L82 PathProgramCache]: Analyzing trace with hash 103467206, now seen corresponding path program 1 times [2020-10-14 04:08:00,822 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:08:00,822 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1657207642] [2020-10-14 04:08:00,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:08:00,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:08:00,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:08:01,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:08:01,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:08:04,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:08:04,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 285 [2020-10-14 04:08:04,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:08:04,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3279 [2020-10-14 04:08:04,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:08:04,199 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:08:04,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:08:04,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 185 [2020-10-14 04:08:04,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-14 04:08:04,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:08:04,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:08:04,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:08:04,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:08:04,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:08:04,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:08:04,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:08:04,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:08:04,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:08:04,297 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:08:04,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:08:04,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:08:04,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:08:04,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:08:04,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:08:04,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:08:04,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:08:04,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:08:04,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 04:08:04,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:08:04,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-14 04:08:04,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:08:04,356 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:08:04,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:08:04,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:08:04,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:08:04,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:08:04,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 04:08:04,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:08:04,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:08:04,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:08:04,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 04:08:04,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:08:04,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-14 04:08:04,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:08:04,488 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:08:04,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:08:04,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:08:04,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 04:08:04,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:08:04,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-14 04:08:04,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:08:04,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:08:04,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:08:04,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-14 04:08:04,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:08:04,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-10-14 04:08:04,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:08:04,677 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:08:04,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:08:04,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:08:04,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-14 04:08:04,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:08:04,856 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 195 proven. 2 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2020-10-14 04:08:04,857 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1657207642] [2020-10-14 04:08:04,858 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:08:04,858 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:08:04,858 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904993754] [2020-10-14 04:08:04,859 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:08:04,859 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:08:04,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:08:04,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:08:04,860 INFO L87 Difference]: Start difference. First operand 3733 states and 4487 transitions. Second operand 7 states. [2020-10-14 04:08:19,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:08:19,745 INFO L93 Difference]: Finished difference Result 7913 states and 9525 transitions. [2020-10-14 04:08:19,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 04:08:19,747 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 271 [2020-10-14 04:08:19,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:08:19,771 INFO L225 Difference]: With dead ends: 7913 [2020-10-14 04:08:19,771 INFO L226 Difference]: Without dead ends: 4624 [2020-10-14 04:08:19,780 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 04:08:19,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4624 states. [2020-10-14 04:08:19,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4624 to 3731. [2020-10-14 04:08:19,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3731 states. [2020-10-14 04:08:19,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3731 states to 3731 states and 4466 transitions. [2020-10-14 04:08:19,881 INFO L78 Accepts]: Start accepts. Automaton has 3731 states and 4466 transitions. Word has length 271 [2020-10-14 04:08:19,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:08:19,882 INFO L479 AbstractCegarLoop]: Abstraction has 3731 states and 4466 transitions. [2020-10-14 04:08:19,882 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:08:19,882 INFO L276 IsEmpty]: Start isEmpty. Operand 3731 states and 4466 transitions. [2020-10-14 04:08:19,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2020-10-14 04:08:19,887 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:08:19,888 INFO L422 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:08:19,888 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 04:08:19,889 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:08:19,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:08:19,889 INFO L82 PathProgramCache]: Analyzing trace with hash 319824059, now seen corresponding path program 1 times [2020-10-14 04:08:19,889 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:08:19,890 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [286010396] [2020-10-14 04:08:19,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:08:19,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:08:20,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:08:20,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:08:20,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:08:21,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:08:23,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:08:23,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 299 [2020-10-14 04:08:23,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 04:08:23,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3246 [2020-10-14 04:08:23,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:08:23,213 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:08:23,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:08:23,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-14 04:08:23,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-14 04:08:23,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:08:23,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:08:23,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:08:23,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:08:23,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:08:23,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:08:23,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:08:23,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:08:23,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:08:23,312 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:08:23,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:08:23,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:08:23,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:08:23,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:08:23,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:08:23,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:08:23,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:08:23,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:08:23,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 04:08:23,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:08:23,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-14 04:08:23,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:08:23,452 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:08:23,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:08:23,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:08:23,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 04:08:23,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:08:23,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 04:08:23,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:08:23,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:08:23,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:08:23,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-14 04:08:23,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:08:23,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 208 [2020-10-14 04:08:23,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:08:23,711 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:08:23,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:08:23,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:08:23,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-14 04:08:23,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:08:23,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-10-14 04:08:23,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:08:23,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:08:23,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:08:23,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 04:08:23,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:08:23,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-14 04:08:23,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:08:23,886 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:08:23,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:08:23,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-14 04:08:23,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:08:23,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:08:24,026 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 130 proven. 74 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-10-14 04:08:24,028 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [286010396] [2020-10-14 04:08:24,028 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:08:24,029 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:08:24,029 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897657390] [2020-10-14 04:08:24,030 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:08:24,030 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:08:24,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:08:24,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:08:24,031 INFO L87 Difference]: Start difference. First operand 3731 states and 4466 transitions. Second operand 7 states. [2020-10-14 04:08:44,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:08:44,929 INFO L93 Difference]: Finished difference Result 10360 states and 12819 transitions. [2020-10-14 04:08:44,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 04:08:44,938 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 285 [2020-10-14 04:08:44,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:08:44,966 INFO L225 Difference]: With dead ends: 10360 [2020-10-14 04:08:44,967 INFO L226 Difference]: Without dead ends: 7073 [2020-10-14 04:08:44,977 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 04:08:44,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7073 states. [2020-10-14 04:08:45,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7073 to 6951. [2020-10-14 04:08:45,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6951 states. [2020-10-14 04:08:45,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6951 states to 6951 states and 8097 transitions. [2020-10-14 04:08:45,189 INFO L78 Accepts]: Start accepts. Automaton has 6951 states and 8097 transitions. Word has length 285 [2020-10-14 04:08:45,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:08:45,189 INFO L479 AbstractCegarLoop]: Abstraction has 6951 states and 8097 transitions. [2020-10-14 04:08:45,189 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:08:45,189 INFO L276 IsEmpty]: Start isEmpty. Operand 6951 states and 8097 transitions. [2020-10-14 04:08:45,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2020-10-14 04:08:45,194 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:08:45,195 INFO L422 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:08:45,195 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 04:08:45,195 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:08:45,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:08:45,195 INFO L82 PathProgramCache]: Analyzing trace with hash -580064340, now seen corresponding path program 1 times [2020-10-14 04:08:45,196 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:08:45,196 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1361009353] [2020-10-14 04:08:45,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:08:45,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:08:45,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:08:45,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:08:46,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:08:46,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:08:47,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:08:50,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:08:50,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 306 [2020-10-14 04:08:50,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 04:08:50,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5081 [2020-10-14 04:08:50,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:08:50,346 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:08:50,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:08:50,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-14 04:08:50,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-14 04:08:50,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:08:50,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:08:50,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:08:50,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:08:50,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:08:50,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:08:50,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:08:50,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 04:08:50,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:08:50,538 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:08:50,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:08:50,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:08:50,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:08:50,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 04:08:50,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:08:50,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:08:50,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:08:50,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:08:50,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 04:08:50,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:08:50,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 232 [2020-10-14 04:08:50,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:08:50,852 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:08:50,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:08:50,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:08:50,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 04:08:50,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 04:08:50,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 04:08:50,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:08:50,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:08:51,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:08:51,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-14 04:08:51,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:08:51,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 204 [2020-10-14 04:08:51,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:08:51,118 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:08:51,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:08:51,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:08:51,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-14 04:08:51,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:08:51,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-14 04:08:51,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:08:51,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:08:51,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:08:51,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 04:08:51,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:08:51,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-14 04:08:51,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:08:51,366 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:08:51,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:08:51,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-14 04:08:51,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:08:51,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:08:51,662 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 130 proven. 74 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-10-14 04:08:51,663 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1361009353] [2020-10-14 04:08:51,663 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:08:51,664 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:08:51,664 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358639646] [2020-10-14 04:08:51,665 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:08:51,665 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:08:51,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:08:51,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:08:51,666 INFO L87 Difference]: Start difference. First operand 6951 states and 8097 transitions. Second operand 7 states. [2020-10-14 04:09:13,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:09:13,297 INFO L93 Difference]: Finished difference Result 15362 states and 17863 transitions. [2020-10-14 04:09:13,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 04:09:13,301 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 292 [2020-10-14 04:09:13,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:09:13,341 INFO L225 Difference]: With dead ends: 15362 [2020-10-14 04:09:13,342 INFO L226 Difference]: Without dead ends: 8855 [2020-10-14 04:09:13,360 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-14 04:09:13,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8855 states. [2020-10-14 04:09:13,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8855 to 8276. [2020-10-14 04:09:13,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8276 states. [2020-10-14 04:09:13,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8276 states to 8276 states and 9563 transitions. [2020-10-14 04:09:13,564 INFO L78 Accepts]: Start accepts. Automaton has 8276 states and 9563 transitions. Word has length 292 [2020-10-14 04:09:13,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:09:13,565 INFO L479 AbstractCegarLoop]: Abstraction has 8276 states and 9563 transitions. [2020-10-14 04:09:13,565 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:09:13,565 INFO L276 IsEmpty]: Start isEmpty. Operand 8276 states and 9563 transitions. [2020-10-14 04:09:13,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2020-10-14 04:09:13,571 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:09:13,572 INFO L422 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:09:13,572 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 04:09:13,572 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:09:13,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:09:13,573 INFO L82 PathProgramCache]: Analyzing trace with hash -1003767164, now seen corresponding path program 1 times [2020-10-14 04:09:13,574 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:09:13,574 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [951802947] [2020-10-14 04:09:13,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:09:13,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:09:13,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:09:14,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:09:14,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:09:16,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:09:18,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:09:18,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 326 [2020-10-14 04:09:18,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 04:09:18,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-14 04:09:18,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:09:18,697 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:09:18,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:09:18,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 228 [2020-10-14 04:09:18,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-14 04:09:18,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:09:18,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:09:18,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:09:18,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:09:18,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:09:18,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:09:18,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:09:18,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:09:18,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:09:18,801 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:09:18,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:09:18,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:09:18,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:09:18,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:09:18,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:09:18,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:09:18,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:09:18,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:09:18,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 04:09:18,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:09:18,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-14 04:09:18,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:09:18,866 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:09:18,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:09:18,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:09:18,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:09:18,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:09:18,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 04:09:18,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:09:18,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:09:19,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:09:19,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-14 04:09:19,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:09:19,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-14 04:09:19,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:09:19,011 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:09:19,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:09:19,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:09:19,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-14 04:09:19,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:09:19,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2020-10-14 04:09:19,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:09:19,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:09:19,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:09:19,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 04:09:19,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:09:19,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-14 04:09:19,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:09:19,162 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:09:19,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:09:19,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:09:19,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 04:09:19,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:09:19,259 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 191 proven. 2 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-10-14 04:09:19,260 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [951802947] [2020-10-14 04:09:19,260 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:09:19,260 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:09:19,261 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510558533] [2020-10-14 04:09:19,261 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:09:19,262 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:09:19,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:09:19,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:09:19,262 INFO L87 Difference]: Start difference. First operand 8276 states and 9563 transitions. Second operand 7 states. [2020-10-14 04:09:33,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:09:33,568 INFO L93 Difference]: Finished difference Result 19919 states and 23663 transitions. [2020-10-14 04:09:33,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 04:09:33,575 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 312 [2020-10-14 04:09:33,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:09:33,619 INFO L225 Difference]: With dead ends: 19919 [2020-10-14 04:09:33,619 INFO L226 Difference]: Without dead ends: 11137 [2020-10-14 04:09:33,639 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 04:09:33,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11137 states. [2020-10-14 04:09:33,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11137 to 10575. [2020-10-14 04:09:33,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10575 states. [2020-10-14 04:09:33,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10575 states to 10575 states and 12441 transitions. [2020-10-14 04:09:33,898 INFO L78 Accepts]: Start accepts. Automaton has 10575 states and 12441 transitions. Word has length 312 [2020-10-14 04:09:33,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:09:33,899 INFO L479 AbstractCegarLoop]: Abstraction has 10575 states and 12441 transitions. [2020-10-14 04:09:33,900 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:09:33,900 INFO L276 IsEmpty]: Start isEmpty. Operand 10575 states and 12441 transitions. [2020-10-14 04:09:33,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 372 [2020-10-14 04:09:33,909 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:09:33,910 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-14 04:09:33,910 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 04:09:33,911 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:09:33,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:09:33,911 INFO L82 PathProgramCache]: Analyzing trace with hash -441524044, now seen corresponding path program 1 times [2020-10-14 04:09:33,912 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:09:33,912 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [320909754] [2020-10-14 04:09:33,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:09:34,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:09:34,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:09:34,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:09:34,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:09:38,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:09:39,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:09:39,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 387 [2020-10-14 04:09:39,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 04:09:39,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-14 04:09:39,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:09:39,049 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:09:39,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:09:39,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 185 [2020-10-14 04:09:39,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-14 04:09:39,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:09:39,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:09:39,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:09:39,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:09:39,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:09:39,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:09:39,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:09:39,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:09:39,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:09:39,137 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:09:39,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:09:39,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:09:39,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:09:39,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:09:39,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:09:39,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:09:39,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:09:39,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:09:39,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 04:09:39,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:09:39,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 04:09:39,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:09:39,188 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:09:39,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:09:39,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:09:39,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:09:39,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:09:39,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 04:09:39,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:09:39,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:09:39,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:09:39,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 04:09:39,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:09:39,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-14 04:09:39,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:09:39,263 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:09:39,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:09:39,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:09:39,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 04:09:39,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:09:39,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-14 04:09:39,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:09:39,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:09:39,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:09:39,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-14 04:09:39,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:09:39,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-14 04:09:39,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:09:39,401 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:09:39,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:09:39,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:09:39,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-14 04:09:39,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:09:39,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2020-10-14 04:09:39,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:09:39,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:09:39,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:09:39,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 04:09:39,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:09:39,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-14 04:09:39,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:09:39,504 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:09:39,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:09:39,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-14 04:09:39,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:09:39,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:09:39,580 INFO L134 CoverageAnalysis]: Checked inductivity of 540 backedges. 236 proven. 74 refuted. 0 times theorem prover too weak. 230 trivial. 0 not checked. [2020-10-14 04:09:39,580 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [320909754] [2020-10-14 04:09:39,581 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:09:39,581 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:09:39,581 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417185500] [2020-10-14 04:09:39,582 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:09:39,582 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:09:39,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:09:39,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:09:39,583 INFO L87 Difference]: Start difference. First operand 10575 states and 12441 transitions. Second operand 7 states. [2020-10-14 04:10:01,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:10:01,065 INFO L93 Difference]: Finished difference Result 24929 states and 30466 transitions. [2020-10-14 04:10:01,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 04:10:01,069 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 371 [2020-10-14 04:10:01,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:10:01,151 INFO L225 Difference]: With dead ends: 24929 [2020-10-14 04:10:01,152 INFO L226 Difference]: Without dead ends: 14797 [2020-10-14 04:10:01,182 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 04:10:01,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14797 states. [2020-10-14 04:10:01,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14797 to 14256. [2020-10-14 04:10:01,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14256 states. [2020-10-14 04:10:01,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14256 states to 14256 states and 17467 transitions. [2020-10-14 04:10:01,562 INFO L78 Accepts]: Start accepts. Automaton has 14256 states and 17467 transitions. Word has length 371 [2020-10-14 04:10:01,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:10:01,563 INFO L479 AbstractCegarLoop]: Abstraction has 14256 states and 17467 transitions. [2020-10-14 04:10:01,563 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:10:01,563 INFO L276 IsEmpty]: Start isEmpty. Operand 14256 states and 17467 transitions. [2020-10-14 04:10:01,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 377 [2020-10-14 04:10:01,573 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:10:01,574 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-14 04:10:01,574 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 04:10:01,575 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:10:01,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:10:01,575 INFO L82 PathProgramCache]: Analyzing trace with hash 1923954935, now seen corresponding path program 1 times [2020-10-14 04:10:01,575 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:10:01,575 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [794721754] [2020-10-14 04:10:01,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:10:01,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:10:01,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:10:01,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:10:03,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:10:04,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:10:05,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:10:05,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 392 [2020-10-14 04:10:05,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 04:10:05,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3658 [2020-10-14 04:10:05,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:10:05,355 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:10:05,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:10:05,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 294 [2020-10-14 04:10:05,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-14 04:10:05,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:10:05,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:10:05,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:10:05,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:10:05,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:10:05,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:10:05,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:10:05,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 04:10:05,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:10:05,496 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:10:05,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:10:05,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:10:05,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:10:05,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:10:05,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:10:05,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:10:05,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:10:05,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:10:05,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 04:10:05,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:10:05,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 04:10:05,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:10:05,553 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:10:05,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:10:05,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:10:05,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:10:05,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:10:05,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 04:10:05,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:10:05,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:10:05,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:10:05,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 04:10:05,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:10:05,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 04:10:05,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:10:05,592 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:10:05,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:10:05,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:10:05,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:10:05,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:10:05,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-14 04:10:05,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:10:05,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:10:05,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:10:05,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-14 04:10:05,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:10:05,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-14 04:10:05,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:10:05,741 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:10:05,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:10:05,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:10:05,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-14 04:10:05,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:10:05,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2020-10-14 04:10:05,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:10:05,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:10:05,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:10:05,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 04:10:05,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:10:05,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-14 04:10:05,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:10:05,883 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:10:05,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:10:05,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:10:05,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 04:10:05,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:10:06,087 INFO L134 CoverageAnalysis]: Checked inductivity of 540 backedges. 282 proven. 2 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2020-10-14 04:10:06,088 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [794721754] [2020-10-14 04:10:06,088 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:10:06,088 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:10:06,088 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684305647] [2020-10-14 04:10:06,092 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:10:06,093 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:10:06,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:10:06,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:10:06,093 INFO L87 Difference]: Start difference. First operand 14256 states and 17467 transitions. Second operand 7 states.