/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/Problem15_label37.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 03:31:51,120 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 03:31:51,123 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 03:31:51,149 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 03:31:51,150 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 03:31:51,151 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 03:31:51,152 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 03:31:51,154 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 03:31:51,156 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 03:31:51,156 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 03:31:51,158 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 03:31:51,159 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 03:31:51,159 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 03:31:51,160 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 03:31:51,161 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 03:31:51,162 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 03:31:51,163 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 03:31:51,164 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 03:31:51,166 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 03:31:51,168 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 03:31:51,169 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 03:31:51,171 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 03:31:51,172 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 03:31:51,173 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 03:31:51,175 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 03:31:51,176 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 03:31:51,176 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 03:31:51,177 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 03:31:51,177 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 03:31:51,178 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 03:31:51,178 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 03:31:51,179 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 03:31:51,180 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 03:31:51,181 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 03:31:51,182 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 03:31:51,182 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 03:31:51,183 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 03:31:51,183 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 03:31:51,183 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 03:31:51,184 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 03:31:51,185 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 03:31:51,186 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 03:31:51,212 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 03:31:51,213 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 03:31:51,216 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 03:31:51,216 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 03:31:51,217 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 03:31:51,217 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 03:31:51,217 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 03:31:51,217 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 03:31:51,217 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 03:31:51,218 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 03:31:51,218 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 03:31:51,221 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 03:31:51,221 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 03:31:51,221 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 03:31:51,222 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 03:31:51,222 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 03:31:51,222 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 03:31:51,222 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 03:31:51,222 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 03:31:51,223 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 03:31:51,223 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 03:31:51,225 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 03:31:51,225 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 03:31:51,226 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 03:31:51,226 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 03:31:51,226 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 03:31:51,226 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 03:31:51,226 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 03:31:51,227 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 03:31:51,228 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 03:31:51,526 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 03:31:51,543 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 03:31:51,550 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 03:31:51,553 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 03:31:51,555 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 03:31:51,556 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label37.c [2020-10-14 03:31:51,621 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/307bc6ec8/e3558221a56343b091193b2b223b8327/FLAG2f4888c7b [2020-10-14 03:31:52,337 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 03:31:52,338 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem15_label37.c [2020-10-14 03:31:52,373 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/307bc6ec8/e3558221a56343b091193b2b223b8327/FLAG2f4888c7b [2020-10-14 03:31:52,431 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/307bc6ec8/e3558221a56343b091193b2b223b8327 [2020-10-14 03:31:52,442 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 03:31:52,445 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 03:31:52,451 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 03:31:52,451 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 03:31:52,455 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 03:31:52,456 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 03:31:52" (1/1) ... [2020-10-14 03:31:52,460 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e93eba7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:31:52, skipping insertion in model container [2020-10-14 03:31:52,460 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 03:31:52" (1/1) ... [2020-10-14 03:31:52,470 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 03:31:52,565 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 03:31:53,502 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 03:31:53,510 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 03:31:53,813 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 03:31:53,834 INFO L208 MainTranslator]: Completed translation [2020-10-14 03:31:53,835 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:31:53 WrapperNode [2020-10-14 03:31:53,835 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 03:31:53,836 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 03:31:53,837 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 03:31:53,837 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 03:31:53,853 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:31:53" (1/1) ... [2020-10-14 03:31:53,855 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:31:53" (1/1) ... [2020-10-14 03:31:53,894 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:31:53" (1/1) ... [2020-10-14 03:31:53,894 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:31:53" (1/1) ... [2020-10-14 03:31:53,962 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:31:53" (1/1) ... [2020-10-14 03:31:53,979 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:31:53" (1/1) ... [2020-10-14 03:31:54,002 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:31:53" (1/1) ... [2020-10-14 03:31:54,026 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 03:31:54,026 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 03:31:54,027 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 03:31:54,027 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 03:31:54,028 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:31:53" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 03:31:54,099 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 03:31:54,099 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 03:31:54,099 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 03:31:54,100 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 03:31:54,100 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 03:31:54,100 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 03:31:54,100 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 03:31:54,101 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 03:31:54,101 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 03:31:54,101 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 03:31:54,101 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 03:31:54,101 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 03:31:54,101 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 03:31:59,911 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 03:31:59,912 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 03:31:59,930 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 03:31:59 BoogieIcfgContainer [2020-10-14 03:31:59,931 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 03:31:59,932 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 03:31:59,933 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 03:31:59,937 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 03:31:59,937 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 03:31:52" (1/3) ... [2020-10-14 03:31:59,939 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4608b90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 03:31:59, skipping insertion in model container [2020-10-14 03:31:59,940 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:31:53" (2/3) ... [2020-10-14 03:31:59,940 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4608b90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 03:31:59, skipping insertion in model container [2020-10-14 03:31:59,940 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 03:31:59" (3/3) ... [2020-10-14 03:31:59,950 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem15_label37.c [2020-10-14 03:31:59,964 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 03:31:59,975 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 03:31:59,992 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 03:32:00,032 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 03:32:00,033 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 03:32:00,033 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 03:32:00,033 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 03:32:00,034 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 03:32:00,034 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 03:32:00,034 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 03:32:00,034 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 03:32:00,075 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states. [2020-10-14 03:32:00,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-14 03:32:00,084 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:32:00,085 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:32:00,085 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:32:00,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:32:00,092 INFO L82 PathProgramCache]: Analyzing trace with hash 1350475056, now seen corresponding path program 1 times [2020-10-14 03:32:00,101 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:32:00,102 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [398213323] [2020-10-14 03:32:00,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:32:00,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:32:00,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:32:00,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:32:00,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-14 03:32:00,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:32:00,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 302 [2020-10-14 03:32:00,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:32:00,638 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:32:00,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 03:32:00,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 03:32:00,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 03:32:00,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 03:32:00,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:32:00,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:32:00,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:32:00,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:32:00,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:32:00,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:32:00,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 03:32:00,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:32:00,739 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:32:00,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:32:00,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:32:00,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 03:32:00,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:32:00,752 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 03:32:00,753 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [398213323] [2020-10-14 03:32:00,755 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 03:32:00,756 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 03:32:00,757 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194227777] [2020-10-14 03:32:00,762 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 03:32:00,762 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:32:00,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 03:32:00,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 03:32:00,780 INFO L87 Difference]: Start difference. First operand 437 states. Second operand 4 states. [2020-10-14 03:32:08,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:32:08,583 INFO L93 Difference]: Finished difference Result 1224 states and 2200 transitions. [2020-10-14 03:32:08,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:32:08,585 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2020-10-14 03:32:08,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:32:08,609 INFO L225 Difference]: With dead ends: 1224 [2020-10-14 03:32:08,609 INFO L226 Difference]: Without dead ends: 708 [2020-10-14 03:32:08,619 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:32:08,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 708 states. [2020-10-14 03:32:08,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 708 to 694. [2020-10-14 03:32:08,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 694 states. [2020-10-14 03:32:08,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 694 states to 694 states and 1080 transitions. [2020-10-14 03:32:08,720 INFO L78 Accepts]: Start accepts. Automaton has 694 states and 1080 transitions. Word has length 26 [2020-10-14 03:32:08,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:32:08,721 INFO L479 AbstractCegarLoop]: Abstraction has 694 states and 1080 transitions. [2020-10-14 03:32:08,721 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 03:32:08,722 INFO L276 IsEmpty]: Start isEmpty. Operand 694 states and 1080 transitions. [2020-10-14 03:32:08,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-14 03:32:08,726 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:32:08,727 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:32:08,727 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 03:32:08,727 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:32:08,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:32:08,728 INFO L82 PathProgramCache]: Analyzing trace with hash -1195195057, now seen corresponding path program 1 times [2020-10-14 03:32:08,728 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:32:08,729 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [27305365] [2020-10-14 03:32:08,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:32:08,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:32:08,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:32:09,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:32:09,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:32:09,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:32:09,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-14 03:32:09,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 03:32:09,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1151 [2020-10-14 03:32:09,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:32:09,928 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:32:09,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:32:09,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-14 03:32:09,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 03:32:09,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 03:32:09,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:32:09,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:32:09,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:32:10,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:32:10,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:32:10,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:32:10,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 03:32:10,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:32:10,003 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:32:10,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:32:10,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:32:10,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:32:10,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 03:32:10,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:32:10,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:32:10,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:32:10,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:32:10,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-14 03:32:10,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:32:10,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-14 03:32:10,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:32:10,152 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:32:10,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:32:10,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:32:10,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-14 03:32:10,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:32:10,212 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 18 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:32:10,213 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [27305365] [2020-10-14 03:32:10,213 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:32:10,213 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:32:10,214 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011256425] [2020-10-14 03:32:10,216 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:32:10,217 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:32:10,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:32:10,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:32:10,217 INFO L87 Difference]: Start difference. First operand 694 states and 1080 transitions. Second operand 5 states. [2020-10-14 03:32:15,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:32:15,950 INFO L93 Difference]: Finished difference Result 1695 states and 2713 transitions. [2020-10-14 03:32:15,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:32:15,952 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 96 [2020-10-14 03:32:15,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:32:15,960 INFO L225 Difference]: With dead ends: 1695 [2020-10-14 03:32:15,961 INFO L226 Difference]: Without dead ends: 1007 [2020-10-14 03:32:15,963 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 03:32:15,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1007 states. [2020-10-14 03:32:16,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1007 to 1005. [2020-10-14 03:32:16,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1005 states. [2020-10-14 03:32:16,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1005 states to 1005 states and 1362 transitions. [2020-10-14 03:32:16,011 INFO L78 Accepts]: Start accepts. Automaton has 1005 states and 1362 transitions. Word has length 96 [2020-10-14 03:32:16,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:32:16,012 INFO L479 AbstractCegarLoop]: Abstraction has 1005 states and 1362 transitions. [2020-10-14 03:32:16,012 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:32:16,013 INFO L276 IsEmpty]: Start isEmpty. Operand 1005 states and 1362 transitions. [2020-10-14 03:32:16,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-14 03:32:16,017 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:32:16,017 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:32:16,017 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 03:32:16,017 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:32:16,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:32:16,018 INFO L82 PathProgramCache]: Analyzing trace with hash -1445266351, now seen corresponding path program 1 times [2020-10-14 03:32:16,018 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:32:16,018 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1316853026] [2020-10-14 03:32:16,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:32:16,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:32:16,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:32:16,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:32:16,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:32:16,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-14 03:32:16,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:32:16,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 886 [2020-10-14 03:32:16,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:32:16,942 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:32:16,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:32:16,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 93 [2020-10-14 03:32:16,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 03:32:16,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:32:17,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:32:17,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:32:17,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:32:17,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:32:17,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:32:17,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:32:17,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:32:17,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:32:17,029 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:32:17,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:32:17,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:32:17,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:32:17,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:32:17,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:32:17,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:32:17,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:32:17,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:32:17,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-14 03:32:17,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:32:17,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-14 03:32:17,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:32:17,196 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:32:17,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:32:17,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:32:17,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-14 03:32:17,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:32:17,292 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 18 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:32:17,292 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1316853026] [2020-10-14 03:32:17,293 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:32:17,293 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:32:17,293 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551231165] [2020-10-14 03:32:17,294 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:32:17,294 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:32:17,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:32:17,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:32:17,295 INFO L87 Difference]: Start difference. First operand 1005 states and 1362 transitions. Second operand 5 states. [2020-10-14 03:32:27,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:32:27,864 INFO L93 Difference]: Finished difference Result 2329 states and 3322 transitions. [2020-10-14 03:32:27,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:32:27,865 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 109 [2020-10-14 03:32:27,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:32:27,880 INFO L225 Difference]: With dead ends: 2329 [2020-10-14 03:32:27,881 INFO L226 Difference]: Without dead ends: 1639 [2020-10-14 03:32:27,883 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 03:32:27,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1639 states. [2020-10-14 03:32:27,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1639 to 1639. [2020-10-14 03:32:27,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1639 states. [2020-10-14 03:32:27,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1639 states to 1639 states and 2086 transitions. [2020-10-14 03:32:27,935 INFO L78 Accepts]: Start accepts. Automaton has 1639 states and 2086 transitions. Word has length 109 [2020-10-14 03:32:27,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:32:27,936 INFO L479 AbstractCegarLoop]: Abstraction has 1639 states and 2086 transitions. [2020-10-14 03:32:27,936 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:32:27,936 INFO L276 IsEmpty]: Start isEmpty. Operand 1639 states and 2086 transitions. [2020-10-14 03:32:27,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-14 03:32:27,940 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:32:27,940 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:32:27,940 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 03:32:27,940 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:32:27,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:32:27,941 INFO L82 PathProgramCache]: Analyzing trace with hash -1870199768, now seen corresponding path program 1 times [2020-10-14 03:32:27,941 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:32:27,941 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [85952383] [2020-10-14 03:32:27,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:32:27,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:32:27,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:32:28,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:32:28,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:32:28,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:32:29,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:32:29,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-14 03:32:29,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 03:32:29,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1138 [2020-10-14 03:32:29,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:32:29,113 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:32:29,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:32:29,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-10-14 03:32:29,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 03:32:29,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:32:29,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:32:29,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:32:29,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:32:29,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:32:29,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:32:29,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:32:29,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:32:29,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:32:29,175 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:32:29,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:32:29,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:32:29,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:32:29,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:32:29,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:32:29,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:32:29,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:32:29,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:32:29,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 03:32:29,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:32:29,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-14 03:32:29,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:32:29,322 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:32:29,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:32:29,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:32:29,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 03:32:29,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:32:29,393 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 18 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:32:29,395 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [85952383] [2020-10-14 03:32:29,395 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:32:29,395 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:32:29,395 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380728097] [2020-10-14 03:32:29,397 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:32:29,397 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:32:29,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:32:29,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:32:29,399 INFO L87 Difference]: Start difference. First operand 1639 states and 2086 transitions. Second operand 5 states. [2020-10-14 03:32:39,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:32:39,056 INFO L93 Difference]: Finished difference Result 3589 states and 4761 transitions. [2020-10-14 03:32:39,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:32:39,058 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 112 [2020-10-14 03:32:39,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:32:39,069 INFO L225 Difference]: With dead ends: 3589 [2020-10-14 03:32:39,069 INFO L226 Difference]: Without dead ends: 2265 [2020-10-14 03:32:39,073 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 03:32:39,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2265 states. [2020-10-14 03:32:39,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2265 to 1631. [2020-10-14 03:32:39,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1631 states. [2020-10-14 03:32:39,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1631 states to 1631 states and 2072 transitions. [2020-10-14 03:32:39,119 INFO L78 Accepts]: Start accepts. Automaton has 1631 states and 2072 transitions. Word has length 112 [2020-10-14 03:32:39,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:32:39,120 INFO L479 AbstractCegarLoop]: Abstraction has 1631 states and 2072 transitions. [2020-10-14 03:32:39,120 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:32:39,120 INFO L276 IsEmpty]: Start isEmpty. Operand 1631 states and 2072 transitions. [2020-10-14 03:32:39,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-10-14 03:32:39,123 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:32:39,123 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:32:39,123 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 03:32:39,124 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:32:39,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:32:39,124 INFO L82 PathProgramCache]: Analyzing trace with hash 1860385100, now seen corresponding path program 1 times [2020-10-14 03:32:39,124 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:32:39,125 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1357484060] [2020-10-14 03:32:39,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:32:39,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:32:39,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:32:39,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:32:40,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:32:40,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-14 03:32:40,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:32:40,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1016 [2020-10-14 03:32:40,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:32:40,175 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:32:40,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:32:40,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-14 03:32:40,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 03:32:40,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:32:40,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:32:40,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:32:40,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:32:40,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:32:40,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:32:40,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:32:40,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 03:32:40,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:32:40,251 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:32:40,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:32:40,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:32:40,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:32:40,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:32:40,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:32:40,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:32:40,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:32:40,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:32:40,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-14 03:32:40,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:32:40,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-14 03:32:40,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:32:40,410 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:32:40,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:32:40,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:32:40,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-14 03:32:40,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 03:32:40,469 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 18 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:32:40,470 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1357484060] [2020-10-14 03:32:40,471 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:32:40,475 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:32:40,475 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297105988] [2020-10-14 03:32:40,476 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:32:40,476 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:32:40,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:32:40,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:32:40,477 INFO L87 Difference]: Start difference. First operand 1631 states and 2072 transitions. Second operand 5 states. [2020-10-14 03:32:47,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:32:47,110 INFO L93 Difference]: Finished difference Result 3569 states and 4727 transitions. [2020-10-14 03:32:47,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:32:47,114 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 142 [2020-10-14 03:32:47,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:32:47,125 INFO L225 Difference]: With dead ends: 3569 [2020-10-14 03:32:47,126 INFO L226 Difference]: Without dead ends: 2253 [2020-10-14 03:32:47,129 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 03:32:47,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2253 states. [2020-10-14 03:32:47,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2253 to 2251. [2020-10-14 03:32:47,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2251 states. [2020-10-14 03:32:47,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2251 states to 2251 states and 2770 transitions. [2020-10-14 03:32:47,183 INFO L78 Accepts]: Start accepts. Automaton has 2251 states and 2770 transitions. Word has length 142 [2020-10-14 03:32:47,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:32:47,184 INFO L479 AbstractCegarLoop]: Abstraction has 2251 states and 2770 transitions. [2020-10-14 03:32:47,184 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:32:47,184 INFO L276 IsEmpty]: Start isEmpty. Operand 2251 states and 2770 transitions. [2020-10-14 03:32:47,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-10-14 03:32:47,187 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:32:47,187 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:32:47,187 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 03:32:47,188 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:32:47,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:32:47,188 INFO L82 PathProgramCache]: Analyzing trace with hash 433370297, now seen corresponding path program 1 times [2020-10-14 03:32:47,188 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:32:47,189 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [912222027] [2020-10-14 03:32:47,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:32:47,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:32:47,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:32:47,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:32:48,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:32:48,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-10-14 03:32:48,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:32:48,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 885 [2020-10-14 03:32:48,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:32:48,114 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:32:48,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:32:48,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 139 [2020-10-14 03:32:48,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 03:32:48,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:32:48,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:32:48,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:32:48,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:32:48,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:32:48,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:32:48,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:32:48,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 03:32:48,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:32:48,190 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:32:48,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:32:48,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:32:48,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:32:48,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:32:48,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:32:48,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:32:48,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:32:48,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:32:48,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-14 03:32:48,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:32:48,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-10-14 03:32:48,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:32:48,392 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:32:48,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:32:48,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:32:48,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-14 03:32:48,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:32:48,471 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 18 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:32:48,471 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [912222027] [2020-10-14 03:32:48,472 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:32:48,472 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:32:48,472 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281619166] [2020-10-14 03:32:48,473 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:32:48,473 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:32:48,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:32:48,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:32:48,474 INFO L87 Difference]: Start difference. First operand 2251 states and 2770 transitions. Second operand 5 states. [2020-10-14 03:32:54,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:32:54,873 INFO L93 Difference]: Finished difference Result 5125 states and 6528 transitions. [2020-10-14 03:32:54,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:32:54,874 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 155 [2020-10-14 03:32:54,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:32:54,890 INFO L225 Difference]: With dead ends: 5125 [2020-10-14 03:32:54,891 INFO L226 Difference]: Without dead ends: 3189 [2020-10-14 03:32:54,897 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 03:32:54,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3189 states. [2020-10-14 03:32:54,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3189 to 3186. [2020-10-14 03:32:54,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3186 states. [2020-10-14 03:32:54,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3186 states to 3186 states and 3883 transitions. [2020-10-14 03:32:54,974 INFO L78 Accepts]: Start accepts. Automaton has 3186 states and 3883 transitions. Word has length 155 [2020-10-14 03:32:54,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:32:54,974 INFO L479 AbstractCegarLoop]: Abstraction has 3186 states and 3883 transitions. [2020-10-14 03:32:54,975 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:32:54,975 INFO L276 IsEmpty]: Start isEmpty. Operand 3186 states and 3883 transitions. [2020-10-14 03:32:54,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-10-14 03:32:54,977 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:32:54,978 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:32:54,978 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 03:32:54,978 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:32:54,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:32:54,979 INFO L82 PathProgramCache]: Analyzing trace with hash 49689021, now seen corresponding path program 1 times [2020-10-14 03:32:54,979 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:32:54,979 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1841847523] [2020-10-14 03:32:54,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:32:55,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:32:55,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:32:55,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:32:56,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:32:56,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-10-14 03:32:56,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:32:56,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1122 [2020-10-14 03:32:56,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:32:56,143 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:32:56,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:32:56,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 153 [2020-10-14 03:32:56,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 03:32:56,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:32:56,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:32:56,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:32:56,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:32:56,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:32:56,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:32:56,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:32:56,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:32:56,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:32:56,228 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:32:56,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:32:56,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:32:56,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:32:56,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:32:56,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:32:56,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:32:56,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:32:56,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:32:56,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-14 03:32:56,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:32:56,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-10-14 03:32:56,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:32:56,421 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:32:56,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:32:56,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:32:56,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-14 03:32:56,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:32:56,499 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 18 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:32:56,500 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1841847523] [2020-10-14 03:32:56,500 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:32:56,500 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:32:56,500 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599261288] [2020-10-14 03:32:56,501 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:32:56,501 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:32:56,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:32:56,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:32:56,502 INFO L87 Difference]: Start difference. First operand 3186 states and 3883 transitions. Second operand 5 states. [2020-10-14 03:33:03,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:33:03,228 INFO L93 Difference]: Finished difference Result 6989 states and 8764 transitions. [2020-10-14 03:33:03,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:33:03,230 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 169 [2020-10-14 03:33:03,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:33:03,246 INFO L225 Difference]: With dead ends: 6989 [2020-10-14 03:33:03,246 INFO L226 Difference]: Without dead ends: 4118 [2020-10-14 03:33:03,255 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 03:33:03,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4118 states. [2020-10-14 03:33:03,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4118 to 4118. [2020-10-14 03:33:03,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4118 states. [2020-10-14 03:33:03,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4118 states to 4118 states and 5075 transitions. [2020-10-14 03:33:03,380 INFO L78 Accepts]: Start accepts. Automaton has 4118 states and 5075 transitions. Word has length 169 [2020-10-14 03:33:03,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:33:03,380 INFO L479 AbstractCegarLoop]: Abstraction has 4118 states and 5075 transitions. [2020-10-14 03:33:03,381 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:33:03,381 INFO L276 IsEmpty]: Start isEmpty. Operand 4118 states and 5075 transitions. [2020-10-14 03:33:03,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-10-14 03:33:03,385 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:33:03,385 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:33:03,385 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 03:33:03,386 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:33:03,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:33:03,386 INFO L82 PathProgramCache]: Analyzing trace with hash -2050749282, now seen corresponding path program 1 times [2020-10-14 03:33:03,386 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:33:03,387 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [757014962] [2020-10-14 03:33:03,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:33:03,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:33:03,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:33:03,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:33:03,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:33:04,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:33:07,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:33:07,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:33:07,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-10-14 03:33:07,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 03:33:07,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4060 [2020-10-14 03:33:07,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:33:07,482 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:33:07,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:33:07,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 82 [2020-10-14 03:33:07,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 03:33:07,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:33:07,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:33:07,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:33:07,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:33:07,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:33:07,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:33:07,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:33:07,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:33:07,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:33:07,557 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:33:07,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:33:07,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:33:07,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:33:07,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:33:07,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:33:07,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:33:07,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:33:07,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:33:07,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-14 03:33:07,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:33:07,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-14 03:33:07,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:33:07,665 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:33:07,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:33:07,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:33:07,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-14 03:33:07,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:33:07,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-14 03:33:07,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:33:07,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:33:07,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:33:07,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-14 03:33:07,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:33:07,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-10-14 03:33:07,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:33:07,835 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:33:07,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:33:07,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:33:07,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-14 03:33:07,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:33:07,930 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 107 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 03:33:07,930 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [757014962] [2020-10-14 03:33:07,930 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:33:07,931 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:33:07,931 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704046611] [2020-10-14 03:33:07,932 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:33:07,932 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:33:07,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:33:07,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:33:07,933 INFO L87 Difference]: Start difference. First operand 4118 states and 5075 transitions. Second operand 7 states. [2020-10-14 03:33:20,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:33:20,422 INFO L93 Difference]: Finished difference Result 11548 states and 15123 transitions. [2020-10-14 03:33:20,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 03:33:20,423 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 177 [2020-10-14 03:33:20,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:33:20,454 INFO L225 Difference]: With dead ends: 11548 [2020-10-14 03:33:20,454 INFO L226 Difference]: Without dead ends: 6479 [2020-10-14 03:33:20,466 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 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 03:33:20,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6479 states. [2020-10-14 03:33:20,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6479 to 6333. [2020-10-14 03:33:20,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6333 states. [2020-10-14 03:33:20,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6333 states to 6333 states and 7359 transitions. [2020-10-14 03:33:20,637 INFO L78 Accepts]: Start accepts. Automaton has 6333 states and 7359 transitions. Word has length 177 [2020-10-14 03:33:20,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:33:20,638 INFO L479 AbstractCegarLoop]: Abstraction has 6333 states and 7359 transitions. [2020-10-14 03:33:20,638 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:33:20,638 INFO L276 IsEmpty]: Start isEmpty. Operand 6333 states and 7359 transitions. [2020-10-14 03:33:20,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2020-10-14 03:33:20,644 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:33:20,644 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:33:20,645 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 03:33:20,645 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:33:20,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:33:20,645 INFO L82 PathProgramCache]: Analyzing trace with hash 2069963948, now seen corresponding path program 1 times [2020-10-14 03:33:20,646 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:33:20,646 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1807060604] [2020-10-14 03:33:20,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:33:20,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:33:20,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:33:20,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:33:21,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:33:22,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:33:25,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:33:25,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 260 [2020-10-14 03:33:25,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 03:33:25,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4923 [2020-10-14 03:33:25,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:33:25,631 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:33:25,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:33:25,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 153 [2020-10-14 03:33:25,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 03:33:25,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:33:25,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:33:25,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:33:25,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:33:25,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:33:25,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:33:25,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:33:25,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 03:33:25,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:33:25,724 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:33:25,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:33:25,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:33:25,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:33:25,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:33:25,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:33:25,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:33:25,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:33:25,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:33:25,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-14 03:33:25,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:33:25,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-10-14 03:33:25,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:33:25,930 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:33:25,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:33:25,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:33:25,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-14 03:33:25,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:33:25,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-10-14 03:33:26,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:33:26,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:33:26,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:33:26,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-14 03:33:26,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:33:26,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-14 03:33:26,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:33:26,110 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:33:26,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:33:26,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:33:26,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-14 03:33:26,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:33:26,219 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 114 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 03:33:26,224 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1807060604] [2020-10-14 03:33:26,226 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:33:26,226 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:33:26,226 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14224971] [2020-10-14 03:33:26,227 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:33:26,227 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:33:26,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:33:26,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:33:26,228 INFO L87 Difference]: Start difference. First operand 6333 states and 7359 transitions. Second operand 7 states. [2020-10-14 03:33:35,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:33:35,488 INFO L93 Difference]: Finished difference Result 13428 states and 15967 transitions. [2020-10-14 03:33:35,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 03:33:35,490 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 248 [2020-10-14 03:33:35,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:33:35,535 INFO L225 Difference]: With dead ends: 13428 [2020-10-14 03:33:35,535 INFO L226 Difference]: Without dead ends: 7410 [2020-10-14 03:33:35,547 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 1 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 03:33:35,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7410 states. [2020-10-14 03:33:35,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7410 to 7405. [2020-10-14 03:33:35,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7405 states. [2020-10-14 03:33:35,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7405 states to 7405 states and 8727 transitions. [2020-10-14 03:33:35,707 INFO L78 Accepts]: Start accepts. Automaton has 7405 states and 8727 transitions. Word has length 248 [2020-10-14 03:33:35,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:33:35,708 INFO L479 AbstractCegarLoop]: Abstraction has 7405 states and 8727 transitions. [2020-10-14 03:33:35,708 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:33:35,708 INFO L276 IsEmpty]: Start isEmpty. Operand 7405 states and 8727 transitions. [2020-10-14 03:33:35,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2020-10-14 03:33:35,716 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:33:35,716 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:33:35,716 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 03:33:35,717 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:33:35,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:33:35,717 INFO L82 PathProgramCache]: Analyzing trace with hash -1871298729, now seen corresponding path program 1 times [2020-10-14 03:33:35,717 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:33:35,718 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1836629139] [2020-10-14 03:33:35,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:33:35,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:33:35,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:33:35,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:33:36,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:33:36,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:33:37,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:33:37,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:33:38,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:33:38,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:33:40,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:33:40,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-14 03:33:40,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 03:33:40,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-10-14 03:33:40,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:33:40,788 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:33:40,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:33:40,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 247 [2020-10-14 03:33:40,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 03:33:40,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:33:40,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:33:40,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:33:40,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:33:40,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:33:40,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:33:40,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:33:40,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:33:40,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:33:40,878 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:33:40,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:33:40,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:33:40,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:33:40,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:33:40,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:33:40,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:33:40,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:33:40,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:33:40,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 03:33:40,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:33:40,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-14 03:33:40,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:33:40,931 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:33:40,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:33:40,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:33:40,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:33:40,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:33:40,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-14 03:33:41,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:33:41,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:33:41,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:33:41,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-14 03:33:41,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:33:41,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 281 [2020-10-14 03:33:41,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:33:41,300 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:33:41,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:33:41,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 155 [2020-10-14 03:33:41,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 03:33:41,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:33:41,484 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-10-14 03:33:41,485 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1836629139] [2020-10-14 03:33:41,485 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 03:33:41,486 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 03:33:41,486 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435537709] [2020-10-14 03:33:41,487 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:33:41,488 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:33:41,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:33:41,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:33:41,489 INFO L87 Difference]: Start difference. First operand 7405 states and 8727 transitions. Second operand 5 states. [2020-10-14 03:33:51,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:33:51,807 INFO L93 Difference]: Finished difference Result 20177 states and 24418 transitions. [2020-10-14 03:33:51,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:33:51,810 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 263 [2020-10-14 03:33:51,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:33:51,866 INFO L225 Difference]: With dead ends: 20177 [2020-10-14 03:33:51,866 INFO L226 Difference]: Without dead ends: 13087 [2020-10-14 03:33:51,889 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 03:33:51,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13087 states. [2020-10-14 03:33:52,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13087 to 12141. [2020-10-14 03:33:52,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12141 states. [2020-10-14 03:33:52,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12141 states to 12141 states and 14776 transitions. [2020-10-14 03:33:52,255 INFO L78 Accepts]: Start accepts. Automaton has 12141 states and 14776 transitions. Word has length 263 [2020-10-14 03:33:52,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:33:52,256 INFO L479 AbstractCegarLoop]: Abstraction has 12141 states and 14776 transitions. [2020-10-14 03:33:52,256 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:33:52,256 INFO L276 IsEmpty]: Start isEmpty. Operand 12141 states and 14776 transitions. [2020-10-14 03:33:52,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2020-10-14 03:33:52,271 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:33:52,272 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:33:52,272 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 03:33:52,272 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:33:52,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:33:52,273 INFO L82 PathProgramCache]: Analyzing trace with hash 367083141, now seen corresponding path program 1 times [2020-10-14 03:33:52,273 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:33:52,274 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [336965252] [2020-10-14 03:33:52,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:33:52,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:33:52,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:33:52,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:33:53,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:33:54,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:33:55,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:33:55,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-14 03:33:55,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 03:33:55,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3165 [2020-10-14 03:33:55,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:33:55,506 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:33:55,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:33:55,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 143 [2020-10-14 03:33:55,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-10-14 03:33:55,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:33:55,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:33:55,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:33:55,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:33:55,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:33:55,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:33:55,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:33:55,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 03:33:55,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:33:55,593 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:33:55,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:33:55,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:33:55,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:33:55,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:33:55,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:33:55,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:33:55,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:33:55,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:33:55,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-14 03:33:55,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:33:55,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-14 03:33:55,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:33:55,751 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:33:55,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:33:55,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:33:55,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-14 03:33:55,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:33:55,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-10-14 03:33:55,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:33:55,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:33:56,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:33:56,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-14 03:33:56,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:33:56,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 216 [2020-10-14 03:33:56,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:33:56,065 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:33:56,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:33:56,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:33:56,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-14 03:33:56,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:33:56,278 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 150 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 03:33:56,279 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [336965252] [2020-10-14 03:33:56,279 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:33:56,279 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:33:56,279 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917430687] [2020-10-14 03:33:56,280 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:33:56,280 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:33:56,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:33:56,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:33:56,281 INFO L87 Difference]: Start difference. First operand 12141 states and 14776 transitions. Second operand 7 states. [2020-10-14 03:34:05,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:34:05,575 INFO L93 Difference]: Finished difference Result 26565 states and 33422 transitions. [2020-10-14 03:34:05,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 03:34:05,577 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 275 [2020-10-14 03:34:05,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:34:05,660 INFO L225 Difference]: With dead ends: 26565 [2020-10-14 03:34:05,660 INFO L226 Difference]: Without dead ends: 14738 [2020-10-14 03:34:05,707 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-14 03:34:05,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14738 states. [2020-10-14 03:34:06,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14738 to 14409. [2020-10-14 03:34:06,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14409 states. [2020-10-14 03:34:06,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14409 states to 14409 states and 17669 transitions. [2020-10-14 03:34:06,134 INFO L78 Accepts]: Start accepts. Automaton has 14409 states and 17669 transitions. Word has length 275 [2020-10-14 03:34:06,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:34:06,135 INFO L479 AbstractCegarLoop]: Abstraction has 14409 states and 17669 transitions. [2020-10-14 03:34:06,135 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:34:06,135 INFO L276 IsEmpty]: Start isEmpty. Operand 14409 states and 17669 transitions. [2020-10-14 03:34:06,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2020-10-14 03:34:06,148 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:34:06,148 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:34:06,149 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 03:34:06,149 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:34:06,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:34:06,150 INFO L82 PathProgramCache]: Analyzing trace with hash -2019598698, now seen corresponding path program 1 times [2020-10-14 03:34:06,150 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:34:06,150 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1149708609] [2020-10-14 03:34:06,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:34:06,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:34:06,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:34:06,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:34:06,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:34:07,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:34:08,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:34:11,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:34:11,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 289 [2020-10-14 03:34:11,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 03:34:11,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 03:34:11,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:34:11,209 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:34:11,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:34:11,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 132 [2020-10-14 03:34:11,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-14 03:34:11,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:34:11,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:34:11,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:34:11,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:34:11,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:34:11,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:34:11,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:34:11,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:34:11,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:34:11,317 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:34:11,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:34:11,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:34:11,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:34:11,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:34:11,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:34:11,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:34:11,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:34:11,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:34:11,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-14 03:34:11,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:34:11,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-14 03:34:11,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:34:11,422 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:34:11,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:34:11,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:34:11,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-14 03:34:11,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:34:11,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-14 03:34:11,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:34:11,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:34:11,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:34:11,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-14 03:34:11,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:34:11,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-10-14 03:34:11,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:34:11,615 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:34:11,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:34:11,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:34:11,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-10-14 03:34:11,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:34:11,808 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 156 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 03:34:11,809 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1149708609] [2020-10-14 03:34:11,809 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:34:11,809 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:34:11,809 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661723304] [2020-10-14 03:34:11,810 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:34:11,810 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:34:11,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:34:11,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:34:11,811 INFO L87 Difference]: Start difference. First operand 14409 states and 17669 transitions. Second operand 7 states. [2020-10-14 03:34:23,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:34:23,903 INFO L93 Difference]: Finished difference Result 29741 states and 38077 transitions. [2020-10-14 03:34:23,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 03:34:23,905 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 277 [2020-10-14 03:34:23,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:34:23,983 INFO L225 Difference]: With dead ends: 29741 [2020-10-14 03:34:23,983 INFO L226 Difference]: Without dead ends: 15646 [2020-10-14 03:34:24,027 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-14 03:34:24,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15646 states. [2020-10-14 03:34:24,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15646 to 15098. [2020-10-14 03:34:24,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15098 states. [2020-10-14 03:34:24,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15098 states to 15098 states and 18578 transitions. [2020-10-14 03:34:24,486 INFO L78 Accepts]: Start accepts. Automaton has 15098 states and 18578 transitions. Word has length 277 [2020-10-14 03:34:24,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:34:24,487 INFO L479 AbstractCegarLoop]: Abstraction has 15098 states and 18578 transitions. [2020-10-14 03:34:24,487 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:34:24,487 INFO L276 IsEmpty]: Start isEmpty. Operand 15098 states and 18578 transitions. [2020-10-14 03:34:24,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2020-10-14 03:34:24,499 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:34:24,500 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:34:24,500 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 03:34:24,500 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:34:24,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:34:24,501 INFO L82 PathProgramCache]: Analyzing trace with hash -781371875, now seen corresponding path program 1 times [2020-10-14 03:34:24,501 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:34:24,501 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2044195502] [2020-10-14 03:34:24,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:34:24,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:34:24,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:34:25,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:34:25,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 295 [2020-10-14 03:34:25,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:34:25,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 501 [2020-10-14 03:34:25,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:34:25,077 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:34:25,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 03:34:25,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 03:34:25,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 265 [2020-10-14 03:34:25,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:34:25,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:34:25,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:34:25,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:34:25,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:34:25,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:34:25,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:34:25,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 03:34:25,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:34:25,172 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:34:25,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:34:25,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:34:25,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 03:34:25,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:34:25,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:34:25,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:34:25,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:34:25,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:34:25,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 260 [2020-10-14 03:34:25,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:34:25,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 422 [2020-10-14 03:34:25,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:34:25,672 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:34:25,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:34:25,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:34:25,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 260 [2020-10-14 03:34:25,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:34:25,863 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:34:25,863 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2044195502] [2020-10-14 03:34:25,863 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 03:34:25,864 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 03:34:25,864 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673160699] [2020-10-14 03:34:25,864 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:34:25,864 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:34:25,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:34:25,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:34:25,865 INFO L87 Difference]: Start difference. First operand 15098 states and 18578 transitions. Second operand 7 states. [2020-10-14 03:34:34,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:34:34,908 INFO L93 Difference]: Finished difference Result 33375 states and 41710 transitions. [2020-10-14 03:34:34,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 03:34:34,910 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 285 [2020-10-14 03:34:34,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:34:34,972 INFO L225 Difference]: With dead ends: 33375 [2020-10-14 03:34:34,972 INFO L226 Difference]: Without dead ends: 17644 [2020-10-14 03:34:35,008 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-14 03:34:35,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17644 states. [2020-10-14 03:34:35,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17644 to 17632. [2020-10-14 03:34:35,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17632 states. [2020-10-14 03:34:35,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17632 states to 17632 states and 21346 transitions. [2020-10-14 03:34:35,504 INFO L78 Accepts]: Start accepts. Automaton has 17632 states and 21346 transitions. Word has length 285 [2020-10-14 03:34:35,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:34:35,505 INFO L479 AbstractCegarLoop]: Abstraction has 17632 states and 21346 transitions. [2020-10-14 03:34:35,505 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:34:35,505 INFO L276 IsEmpty]: Start isEmpty. Operand 17632 states and 21346 transitions. [2020-10-14 03:34:35,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 395 [2020-10-14 03:34:35,522 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:34:35,522 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:34:35,523 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 03:34:35,523 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:34:35,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:34:35,524 INFO L82 PathProgramCache]: Analyzing trace with hash -1591232849, now seen corresponding path program 1 times [2020-10-14 03:34:35,524 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:34:35,524 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1436138280] [2020-10-14 03:34:35,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:34:35,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:34:35,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:34:35,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:34:36,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:34:38,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:34:39,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:34:39,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 406 [2020-10-14 03:34:39,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 03:34:39,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4225 [2020-10-14 03:34:39,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:34:39,827 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:34:39,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:34:39,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 380 [2020-10-14 03:34:39,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 03:34:39,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:34:39,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:34:39,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:34:39,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:34:39,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:34:39,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:34:39,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:34:39,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 03:34:39,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:34:39,928 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:34:39,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:34:39,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:34:39,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:34:39,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:34:39,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:34:39,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:34:39,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:34:40,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:34:40,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-14 03:34:40,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:34:40,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-14 03:34:40,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:34:40,002 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:34:40,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:34:40,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:34:40,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:34:40,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:34:40,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-14 03:34:40,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:34:40,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:34:40,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:34:40,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-10-14 03:34:40,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:34:40,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-14 03:34:40,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:34:40,162 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:34:40,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:34:40,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:34:40,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-10-14 03:34:40,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:34:40,265 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 39 proven. 2 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2020-10-14 03:34:40,265 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1436138280] [2020-10-14 03:34:40,265 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:34:40,265 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:34:40,266 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540064565] [2020-10-14 03:34:40,266 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:34:40,266 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:34:40,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:34:40,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:34:40,267 INFO L87 Difference]: Start difference. First operand 17632 states and 21346 transitions. Second operand 5 states. [2020-10-14 03:34:50,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:34:50,860 INFO L93 Difference]: Finished difference Result 35863 states and 44328 transitions. [2020-10-14 03:34:50,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:34:50,861 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 394 [2020-10-14 03:34:50,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:34:50,927 INFO L225 Difference]: With dead ends: 35863 [2020-10-14 03:34:50,927 INFO L226 Difference]: Without dead ends: 21057 [2020-10-14 03:34:50,961 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 03:34:50,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21057 states. [2020-10-14 03:34:51,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21057 to 20124. [2020-10-14 03:34:51,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20124 states. [2020-10-14 03:34:51,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20124 states to 20124 states and 24319 transitions. [2020-10-14 03:34:51,389 INFO L78 Accepts]: Start accepts. Automaton has 20124 states and 24319 transitions. Word has length 394 [2020-10-14 03:34:51,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:34:51,391 INFO L479 AbstractCegarLoop]: Abstraction has 20124 states and 24319 transitions. [2020-10-14 03:34:51,391 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:34:51,391 INFO L276 IsEmpty]: Start isEmpty. Operand 20124 states and 24319 transitions. [2020-10-14 03:34:51,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 466 [2020-10-14 03:34:51,412 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:34:51,413 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:34:51,413 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 03:34:51,414 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:34:51,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:34:51,414 INFO L82 PathProgramCache]: Analyzing trace with hash 80789495, now seen corresponding path program 1 times [2020-10-14 03:34:51,415 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:34:51,415 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1451917633] [2020-10-14 03:34:51,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:34:51,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:34:51,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:34:51,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:34:51,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:34:52,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:34:56,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:34:56,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 479 [2020-10-14 03:34:56,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 03:34:56,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 03:34:56,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:34:56,506 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:34:56,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:34:56,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 323 [2020-10-14 03:34:56,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-10-14 03:34:56,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:34:56,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:34:56,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:34:56,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:34:56,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:34:56,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:34:56,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:34:56,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:34:56,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:34:56,614 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:34:56,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:34:56,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:34:56,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:34:56,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:34:56,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:34:56,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:34:56,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:34:56,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:34:56,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-14 03:34:56,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:34:56,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-14 03:34:56,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:34:56,690 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:34:56,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:34:56,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:34:56,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:34:56,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:34:56,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-14 03:34:56,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:34:56,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:34:56,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:34:56,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 03:34:56,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:34:56,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-14 03:34:56,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:34:56,833 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:34:56,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:34:56,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:34:56,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-14 03:34:56,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:34:56,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2020-10-14 03:34:56,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:34:56,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:34:57,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:34:57,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-14 03:34:57,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:34:57,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 393 [2020-10-14 03:34:57,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:34:57,290 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:34:57,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:34:57,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:34:57,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-10-14 03:34:57,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:34:57,549 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 295 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-14 03:34:57,549 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1451917633] [2020-10-14 03:34:57,549 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:34:57,549 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:34:57,550 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145915642] [2020-10-14 03:34:57,550 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:34:57,550 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:34:57,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:34:57,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:34:57,551 INFO L87 Difference]: Start difference. First operand 20124 states and 24319 transitions. Second operand 7 states. [2020-10-14 03:35:11,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:35:11,090 INFO L93 Difference]: Finished difference Result 43408 states and 53752 transitions. [2020-10-14 03:35:11,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 03:35:11,093 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 465 [2020-10-14 03:35:11,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:35:11,174 INFO L225 Difference]: With dead ends: 43408 [2020-10-14 03:35:11,175 INFO L226 Difference]: Without dead ends: 26110 [2020-10-14 03:35:11,219 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 03:35:11,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26110 states. [2020-10-14 03:35:11,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26110 to 23568. [2020-10-14 03:35:11,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23568 states. [2020-10-14 03:35:11,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23568 states to 23568 states and 28958 transitions. [2020-10-14 03:35:11,970 INFO L78 Accepts]: Start accepts. Automaton has 23568 states and 28958 transitions. Word has length 465 [2020-10-14 03:35:11,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:35:11,970 INFO L479 AbstractCegarLoop]: Abstraction has 23568 states and 28958 transitions. [2020-10-14 03:35:11,971 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:35:11,971 INFO L276 IsEmpty]: Start isEmpty. Operand 23568 states and 28958 transitions. [2020-10-14 03:35:11,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 466 [2020-10-14 03:35:11,979 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:35:11,979 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:35:11,979 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 03:35:11,980 INFO L427 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:35:11,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:35:11,980 INFO L82 PathProgramCache]: Analyzing trace with hash 1883699966, now seen corresponding path program 1 times [2020-10-14 03:35:11,980 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:35:11,982 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [802681700] [2020-10-14 03:35:11,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:35:12,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:35:12,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:35:12,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:35:12,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:35:12,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:35:15,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:35:17,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:35:17,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 479 [2020-10-14 03:35:17,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 03:35:17,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-14 03:35:17,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:35:17,087 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:35:17,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:35:17,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 451 [2020-10-14 03:35:17,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 03:35:17,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:35:17,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:35:17,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:35:17,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:35:17,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:35:17,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:35:17,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:35:17,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 03:35:17,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:35:17,181 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:35:17,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:35:17,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:35:17,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:35:17,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:35:17,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:35:17,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:35:17,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:35:17,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:35:17,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-14 03:35:17,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:35:17,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-14 03:35:17,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:35:17,260 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:35:17,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:35:17,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:35:17,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:35:17,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:35:17,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-14 03:35:17,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:35:17,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:35:17,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:35:17,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 03:35:17,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:35:17,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-14 03:35:17,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:35:17,330 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:35:17,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:35:17,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:35:17,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:35:17,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:35:17,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2020-10-14 03:35:17,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:35:17,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:35:17,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:35:17,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-14 03:35:17,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:35:17,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-14 03:35:17,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:35:17,449 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:35:17,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:35:17,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 121 [2020-10-14 03:35:17,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 03:35:17,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:35:17,561 INFO L134 CoverageAnalysis]: Checked inductivity of 405 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 342 trivial. 0 not checked. [2020-10-14 03:35:17,562 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [802681700] [2020-10-14 03:35:17,562 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 03:35:17,562 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 03:35:17,563 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359043634] [2020-10-14 03:35:17,563 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:35:17,564 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:35:17,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:35:17,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:35:17,564 INFO L87 Difference]: Start difference. First operand 23568 states and 28958 transitions. Second operand 5 states. [2020-10-14 03:35:27,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:35:27,190 INFO L93 Difference]: Finished difference Result 44614 states and 55343 transitions. [2020-10-14 03:35:27,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:35:27,192 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 465 [2020-10-14 03:35:27,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:35:27,270 INFO L225 Difference]: With dead ends: 44614 [2020-10-14 03:35:27,270 INFO L226 Difference]: Without dead ends: 23872 [2020-10-14 03:35:27,320 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 03:35:27,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23872 states. [2020-10-14 03:35:27,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23872 to 23561. [2020-10-14 03:35:27,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23561 states. [2020-10-14 03:35:27,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23561 states to 23561 states and 28925 transitions. [2020-10-14 03:35:27,962 INFO L78 Accepts]: Start accepts. Automaton has 23561 states and 28925 transitions. Word has length 465 [2020-10-14 03:35:27,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:35:27,963 INFO L479 AbstractCegarLoop]: Abstraction has 23561 states and 28925 transitions. [2020-10-14 03:35:27,963 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:35:27,963 INFO L276 IsEmpty]: Start isEmpty. Operand 23561 states and 28925 transitions. [2020-10-14 03:35:27,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 503 [2020-10-14 03:35:27,975 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:35:27,975 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:35:27,975 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 03:35:27,975 INFO L427 AbstractCegarLoop]: === Iteration 17 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:35:27,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:35:27,976 INFO L82 PathProgramCache]: Analyzing trace with hash 672253387, now seen corresponding path program 1 times [2020-10-14 03:35:27,976 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:35:27,976 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [146591231] [2020-10-14 03:35:27,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:35:28,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:35:28,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:35:28,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:35:28,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:35:33,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:35:33,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 516 [2020-10-14 03:35:33,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 03:35:33,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5039 [2020-10-14 03:35:33,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:35:33,090 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:35:33,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:35:33,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 210 [2020-10-14 03:35:33,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-14 03:35:33,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:35:33,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:35:33,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:35:33,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:35:33,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:35:33,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:35:33,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:35:33,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 03:35:33,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:35:33,184 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:35:33,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:35:33,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:35:33,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:35:33,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:35:33,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:35:33,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:35:33,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:35:33,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:35:33,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-14 03:35:33,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:35:33,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-14 03:35:33,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:35:33,346 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:35:33,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:35:33,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:35:33,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 195 [2020-10-14 03:35:33,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:35:33,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-14 03:35:33,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:35:33,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:35:33,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:35:33,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 03:35:33,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:35:33,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-14 03:35:33,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:35:33,540 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:35:33,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:35:33,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:35:33,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-14 03:35:33,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:35:33,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2020-10-14 03:35:33,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:35:33,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:35:33,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:35:33,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-14 03:35:33,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:35:33,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-14 03:35:33,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:35:33,711 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:35:33,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:35:33,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 163 [2020-10-14 03:35:33,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:35:33,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:35:33,885 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 169 proven. 110 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2020-10-14 03:35:33,885 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [146591231] [2020-10-14 03:35:33,885 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:35:33,886 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:35:33,886 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101759593] [2020-10-14 03:35:33,886 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:35:33,887 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:35:33,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:35:33,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:35:33,887 INFO L87 Difference]: Start difference. First operand 23561 states and 28925 transitions. Second operand 7 states.