/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --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_label14.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 21:55:09,904 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 21:55:09,907 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 21:55:09,952 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 21:55:09,952 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 21:55:09,965 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 21:55:09,967 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 21:55:09,970 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 21:55:09,972 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 21:55:09,973 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 21:55:09,975 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 21:55:09,977 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 21:55:09,977 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 21:55:09,982 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 21:55:09,985 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 21:55:09,986 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 21:55:09,988 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 21:55:09,990 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 21:55:09,992 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 21:55:10,001 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 21:55:10,002 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 21:55:10,003 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 21:55:10,004 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 21:55:10,005 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 21:55:10,007 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 21:55:10,008 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 21:55:10,008 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 21:55:10,009 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 21:55:10,009 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 21:55:10,010 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 21:55:10,010 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 21:55:10,011 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 21:55:10,012 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 21:55:10,012 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 21:55:10,013 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 21:55:10,014 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 21:55:10,014 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 21:55:10,014 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 21:55:10,015 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 21:55:10,016 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 21:55:10,016 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 21:55:10,017 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 21:55:10,041 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 21:55:10,041 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 21:55:10,042 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 21:55:10,043 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 21:55:10,043 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 21:55:10,043 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 21:55:10,043 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 21:55:10,044 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 21:55:10,044 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 21:55:10,044 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 21:55:10,044 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 21:55:10,045 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 21:55:10,045 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 21:55:10,045 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 21:55:10,045 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 21:55:10,046 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 21:55:10,046 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 21:55:10,046 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 21:55:10,046 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 21:55:10,046 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 21:55:10,047 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 21:55:10,047 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 21:55:10,047 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 21:55:10,047 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 21:55:10,048 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 21:55:10,048 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 21:55:10,048 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 21:55:10,048 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 21:55:10,048 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 21:55:10,049 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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 21:55:10,390 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 21:55:10,404 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 21:55:10,408 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 21:55:10,409 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 21:55:10,410 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 21:55:10,411 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label14.c [2020-10-14 21:55:10,481 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6ca3969e7/268b2161459647f1a3318b3cccbc6cc0/FLAG4a40cb3cd [2020-10-14 21:55:11,250 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 21:55:11,251 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem15_label14.c [2020-10-14 21:55:11,280 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6ca3969e7/268b2161459647f1a3318b3cccbc6cc0/FLAG4a40cb3cd [2020-10-14 21:55:11,353 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6ca3969e7/268b2161459647f1a3318b3cccbc6cc0 [2020-10-14 21:55:11,364 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 21:55:11,366 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 21:55:11,367 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 21:55:11,367 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 21:55:11,371 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 21:55:11,372 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:55:11" (1/1) ... [2020-10-14 21:55:11,375 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67ea52f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:55:11, skipping insertion in model container [2020-10-14 21:55:11,376 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:55:11" (1/1) ... [2020-10-14 21:55:11,384 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 21:55:11,472 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 21:55:12,495 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 21:55:12,500 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 21:55:12,947 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 21:55:12,970 INFO L208 MainTranslator]: Completed translation [2020-10-14 21:55:12,971 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:55:12 WrapperNode [2020-10-14 21:55:12,971 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 21:55:12,972 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 21:55:12,973 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 21:55:12,973 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 21:55:12,988 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:55:12" (1/1) ... [2020-10-14 21:55:12,990 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:55:12" (1/1) ... [2020-10-14 21:55:13,037 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:55:12" (1/1) ... [2020-10-14 21:55:13,037 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:55:12" (1/1) ... [2020-10-14 21:55:13,144 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:55:12" (1/1) ... [2020-10-14 21:55:13,164 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:55:12" (1/1) ... [2020-10-14 21:55:13,189 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:55:12" (1/1) ... [2020-10-14 21:55:13,220 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 21:55:13,221 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 21:55:13,221 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 21:55:13,221 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 21:55:13,222 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:55:12" (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 21:55:13,295 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 21:55:13,296 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 21:55:13,296 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 21:55:13,297 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 21:55:13,297 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 21:55:13,297 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 21:55:13,298 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 21:55:13,299 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 21:55:13,299 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 21:55:13,299 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 21:55:13,299 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 21:55:13,300 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 21:55:13,300 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 21:55:19,316 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 21:55:19,317 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 21:55:19,326 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:55:19 BoogieIcfgContainer [2020-10-14 21:55:19,326 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 21:55:19,327 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 21:55:19,327 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 21:55:19,331 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 21:55:19,331 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 09:55:11" (1/3) ... [2020-10-14 21:55:19,332 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@361b2b2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:55:19, skipping insertion in model container [2020-10-14 21:55:19,332 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:55:12" (2/3) ... [2020-10-14 21:55:19,333 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@361b2b2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:55:19, skipping insertion in model container [2020-10-14 21:55:19,333 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:55:19" (3/3) ... [2020-10-14 21:55:19,335 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem15_label14.c [2020-10-14 21:55:19,343 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 21:55:19,352 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 21:55:19,367 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 21:55:19,397 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 21:55:19,397 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 21:55:19,397 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 21:55:19,397 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 21:55:19,398 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 21:55:19,398 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 21:55:19,398 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 21:55:19,398 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 21:55:19,427 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states. [2020-10-14 21:55:19,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-14 21:55:19,434 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:55:19,435 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:55:19,436 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:55:19,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:55:19,442 INFO L82 PathProgramCache]: Analyzing trace with hash -436791267, now seen corresponding path program 1 times [2020-10-14 21:55:19,452 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:55:19,452 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [319567863] [2020-10-14 21:55:19,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:55:19,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:55:19,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:55:19,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:55:19,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-14 21:55:19,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:55:19,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 329 [2020-10-14 21:55:19,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:55:19,923 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:55:19,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:55:19,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:55:19,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 21:55:19,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 21:55:20,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:55:20,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:55:20,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:55:20,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:55:20,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:55:20,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:55:20,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 21:55:20,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:55:20,025 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:55:20,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:55:20,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:55:20,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:55:20,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:55:20,045 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 21:55:20,046 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [319567863] [2020-10-14 21:55:20,051 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:55:20,051 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 21:55:20,052 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423357234] [2020-10-14 21:55:20,057 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 21:55:20,057 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:55:20,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 21:55:20,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 21:55:20,075 INFO L87 Difference]: Start difference. First operand 437 states. Second operand 4 states. [2020-10-14 21:55:26,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:55:26,114 INFO L93 Difference]: Finished difference Result 1224 states and 2200 transitions. [2020-10-14 21:55:26,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 21:55:26,116 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2020-10-14 21:55:26,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:55:26,155 INFO L225 Difference]: With dead ends: 1224 [2020-10-14 21:55:26,155 INFO L226 Difference]: Without dead ends: 708 [2020-10-14 21:55:26,165 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 21:55:26,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 708 states. [2020-10-14 21:55:26,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 708 to 694. [2020-10-14 21:55:26,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 694 states. [2020-10-14 21:55:26,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 694 states to 694 states and 1080 transitions. [2020-10-14 21:55:26,276 INFO L78 Accepts]: Start accepts. Automaton has 694 states and 1080 transitions. Word has length 21 [2020-10-14 21:55:26,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:55:26,277 INFO L479 AbstractCegarLoop]: Abstraction has 694 states and 1080 transitions. [2020-10-14 21:55:26,277 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 21:55:26,277 INFO L276 IsEmpty]: Start isEmpty. Operand 694 states and 1080 transitions. [2020-10-14 21:55:26,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-14 21:55:26,282 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:55:26,282 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:55:26,283 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 21:55:26,283 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:55:26,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:55:26,284 INFO L82 PathProgramCache]: Analyzing trace with hash 1007316285, now seen corresponding path program 1 times [2020-10-14 21:55:26,284 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:55:26,284 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1508323572] [2020-10-14 21:55:26,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:55:26,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:55:26,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:55:26,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:55:27,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:55:27,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:55:27,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-14 21:55:27,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:55:27,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1165 [2020-10-14 21:55:27,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:55:27,509 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:55:27,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:55:27,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:55:27,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 21:55:27,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 21:55:27,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:55:27,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:55:27,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:55:27,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:55:27,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:55:27,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:55:27,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 21:55:27,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:55:27,597 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:55:27,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:55:27,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:55:27,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:55:27,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:55:27,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:55:27,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:55:27,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:55:27,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:55:27,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-14 21:55:27,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:55:27,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-14 21:55:27,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:55:27,763 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:55:27,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:55:27,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:55:27,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-14 21:55:27,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:55:27,839 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:55:27,840 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1508323572] [2020-10-14 21:55:27,840 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:55:27,840 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 21:55:27,840 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986737460] [2020-10-14 21:55:27,843 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:55:27,843 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:55:27,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:55:27,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:55:27,844 INFO L87 Difference]: Start difference. First operand 694 states and 1080 transitions. Second operand 7 states. [2020-10-14 21:55:38,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:55:38,074 INFO L93 Difference]: Finished difference Result 1729 states and 2752 transitions. [2020-10-14 21:55:38,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 21:55:38,075 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 91 [2020-10-14 21:55:38,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:55:38,087 INFO L225 Difference]: With dead ends: 1729 [2020-10-14 21:55:38,088 INFO L226 Difference]: Without dead ends: 1041 [2020-10-14 21:55:38,092 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:55:38,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1041 states. [2020-10-14 21:55:38,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1041 to 1004. [2020-10-14 21:55:38,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1004 states. [2020-10-14 21:55:38,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1004 states to 1004 states and 1355 transitions. [2020-10-14 21:55:38,162 INFO L78 Accepts]: Start accepts. Automaton has 1004 states and 1355 transitions. Word has length 91 [2020-10-14 21:55:38,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:55:38,163 INFO L479 AbstractCegarLoop]: Abstraction has 1004 states and 1355 transitions. [2020-10-14 21:55:38,163 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:55:38,164 INFO L276 IsEmpty]: Start isEmpty. Operand 1004 states and 1355 transitions. [2020-10-14 21:55:38,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-14 21:55:38,177 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:55:38,178 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:55:38,179 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 21:55:38,179 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:55:38,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:55:38,180 INFO L82 PathProgramCache]: Analyzing trace with hash -1411007163, now seen corresponding path program 1 times [2020-10-14 21:55:38,180 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:55:38,180 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [112486127] [2020-10-14 21:55:38,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:55:38,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:55:38,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:55:38,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:55:38,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:55:38,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-14 21:55:38,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:55:38,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 735 [2020-10-14 21:55:38,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:55:38,958 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:55:38,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:55:38,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:55:38,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-14 21:55:38,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:55:39,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:55:39,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:55:39,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:55:39,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:55:39,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:55:39,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:55:39,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 21:55:39,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:55:39,051 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:55:39,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:55:39,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:55:39,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:55:39,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 21:55:39,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:55:39,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:55:39,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:55:39,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:55:39,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 21:55:39,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:55:39,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 156 [2020-10-14 21:55:39,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:55:39,256 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:55:39,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:55:39,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:55:39,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-14 21:55:39,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 21:55:39,350 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:55:39,351 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [112486127] [2020-10-14 21:55:39,351 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:55:39,351 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 21:55:39,351 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46642764] [2020-10-14 21:55:39,352 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:55:39,353 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:55:39,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:55:39,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:55:39,354 INFO L87 Difference]: Start difference. First operand 1004 states and 1355 transitions. Second operand 7 states. [2020-10-14 21:55:49,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:55:49,775 INFO L93 Difference]: Finished difference Result 2381 states and 3372 transitions. [2020-10-14 21:55:49,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 21:55:49,776 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 95 [2020-10-14 21:55:49,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:55:49,785 INFO L225 Difference]: With dead ends: 2381 [2020-10-14 21:55:49,785 INFO L226 Difference]: Without dead ends: 1690 [2020-10-14 21:55:49,788 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:55:49,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1690 states. [2020-10-14 21:55:49,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1690 to 1351. [2020-10-14 21:55:49,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1351 states. [2020-10-14 21:55:49,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1351 states to 1351 states and 1743 transitions. [2020-10-14 21:55:49,831 INFO L78 Accepts]: Start accepts. Automaton has 1351 states and 1743 transitions. Word has length 95 [2020-10-14 21:55:49,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:55:49,832 INFO L479 AbstractCegarLoop]: Abstraction has 1351 states and 1743 transitions. [2020-10-14 21:55:49,832 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:55:49,832 INFO L276 IsEmpty]: Start isEmpty. Operand 1351 states and 1743 transitions. [2020-10-14 21:55:49,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2020-10-14 21:55:49,836 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:55:49,836 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:55:49,837 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 21:55:49,837 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:55:49,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:55:49,837 INFO L82 PathProgramCache]: Analyzing trace with hash 807940416, now seen corresponding path program 1 times [2020-10-14 21:55:49,838 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:55:49,838 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1872947259] [2020-10-14 21:55:49,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:55:49,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:55:49,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:55:50,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:55:51,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:55:52,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:55:52,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 231 [2020-10-14 21:55:52,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:55:52,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3069 [2020-10-14 21:55:52,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:55:52,996 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:55:52,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:55:52,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:55:52,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 206 [2020-10-14 21:55:52,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-10-14 21:55:53,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:55:53,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:55:53,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:55:53,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:55:53,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:55:53,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:55:53,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 21:55:53,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:55:53,115 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:55:53,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:55:53,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:55:53,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:55:53,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:55:53,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:55:53,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:55:53,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:55:53,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:55:53,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-14 21:55:53,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:55:53,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 405 [2020-10-14 21:55:53,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:55:53,595 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:55:53,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:55:53,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:55:53,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-14 21:55:53,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:55:54,134 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:55:54,134 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1872947259] [2020-10-14 21:55:54,135 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:55:54,135 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 21:55:54,135 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875779667] [2020-10-14 21:55:54,136 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:55:54,136 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:55:54,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:55:54,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:55:54,137 INFO L87 Difference]: Start difference. First operand 1351 states and 1743 transitions. Second operand 7 states. [2020-10-14 21:56:05,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:56:05,484 INFO L93 Difference]: Finished difference Result 3046 states and 3852 transitions. [2020-10-14 21:56:05,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 21:56:05,486 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 221 [2020-10-14 21:56:05,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:56:05,498 INFO L225 Difference]: With dead ends: 3046 [2020-10-14 21:56:05,499 INFO L226 Difference]: Without dead ends: 1701 [2020-10-14 21:56:05,503 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-14 21:56:05,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1701 states. [2020-10-14 21:56:05,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1701 to 1660. [2020-10-14 21:56:05,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1660 states. [2020-10-14 21:56:05,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1660 states to 1660 states and 2061 transitions. [2020-10-14 21:56:05,563 INFO L78 Accepts]: Start accepts. Automaton has 1660 states and 2061 transitions. Word has length 221 [2020-10-14 21:56:05,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:56:05,564 INFO L479 AbstractCegarLoop]: Abstraction has 1660 states and 2061 transitions. [2020-10-14 21:56:05,564 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:56:05,564 INFO L276 IsEmpty]: Start isEmpty. Operand 1660 states and 2061 transitions. [2020-10-14 21:56:05,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2020-10-14 21:56:05,570 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:56:05,571 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:56:05,571 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 21:56:05,571 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:56:05,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:56:05,572 INFO L82 PathProgramCache]: Analyzing trace with hash -1422762839, now seen corresponding path program 1 times [2020-10-14 21:56:05,572 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:56:05,572 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [878038974] [2020-10-14 21:56:05,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:56:05,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:56:05,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:56:06,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:56:07,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:56:07,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 305 [2020-10-14 21:56:07,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:56:07,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1876 [2020-10-14 21:56:07,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:56:07,543 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:56:07,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 21:56:07,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:56:07,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 299 [2020-10-14 21:56:07,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:56:07,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:56:07,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:56:07,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:56:07,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:56:07,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:56:07,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:56:07,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 21:56:07,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:56:07,664 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:56:07,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:56:07,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:56:07,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:56:07,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:56:07,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:56:07,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:56:07,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:56:08,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:56:08,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-14 21:56:08,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:56:08,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 536 [2020-10-14 21:56:08,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:56:08,301 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:56:08,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:56:08,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:56:08,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 275 [2020-10-14 21:56:08,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-14 21:56:08,621 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 21:56:08,621 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [878038974] [2020-10-14 21:56:08,621 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:56:08,622 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 21:56:08,622 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536884961] [2020-10-14 21:56:08,623 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 21:56:08,623 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:56:08,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 21:56:08,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 21:56:08,624 INFO L87 Difference]: Start difference. First operand 1660 states and 2061 transitions. Second operand 6 states. [2020-10-14 21:56:14,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:56:14,342 INFO L93 Difference]: Finished difference Result 2020 states and 2486 transitions. [2020-10-14 21:56:14,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 21:56:14,350 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 295 [2020-10-14 21:56:14,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:56:14,362 INFO L225 Difference]: With dead ends: 2020 [2020-10-14 21:56:14,363 INFO L226 Difference]: Without dead ends: 2018 [2020-10-14 21:56:14,364 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 21:56:14,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2018 states. [2020-10-14 21:56:14,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2018 to 1971. [2020-10-14 21:56:14,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1971 states. [2020-10-14 21:56:14,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1971 states to 1971 states and 2432 transitions. [2020-10-14 21:56:14,425 INFO L78 Accepts]: Start accepts. Automaton has 1971 states and 2432 transitions. Word has length 295 [2020-10-14 21:56:14,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:56:14,426 INFO L479 AbstractCegarLoop]: Abstraction has 1971 states and 2432 transitions. [2020-10-14 21:56:14,426 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 21:56:14,426 INFO L276 IsEmpty]: Start isEmpty. Operand 1971 states and 2432 transitions. [2020-10-14 21:56:14,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2020-10-14 21:56:14,431 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:56:14,432 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:56:14,432 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 21:56:14,432 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:56:14,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:56:14,433 INFO L82 PathProgramCache]: Analyzing trace with hash 171643455, now seen corresponding path program 1 times [2020-10-14 21:56:14,433 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:56:14,433 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2099743849] [2020-10-14 21:56:14,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:56:14,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:56:14,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:56:14,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:56:15,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:56:15,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:56:17,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:56:17,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 328 [2020-10-14 21:56:17,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 21:56:17,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3143 [2020-10-14 21:56:17,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:56:17,649 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:56:17,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 21:56:17,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:56:17,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 322 [2020-10-14 21:56:17,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:56:17,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:56:17,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:56:17,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:56:17,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:56:17,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:56:17,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:56:17,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 21:56:17,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:56:17,784 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:56:17,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:56:17,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:56:17,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:56:17,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:56:17,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:56:17,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:56:17,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:56:17,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:56:17,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:56:17,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-14 21:56:17,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:56:17,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-10-14 21:56:17,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:56:17,984 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:56:17,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:56:17,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:56:17,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-14 21:56:17,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:56:18,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-14 21:56:18,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:56:18,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:56:18,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:56:19,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:56:19,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-14 21:56:19,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:56:19,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1105 [2020-10-14 21:56:19,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:56:19,218 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:56:19,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:56:19,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:56:19,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 195 [2020-10-14 21:56:19,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:56:19,510 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 20 proven. 11 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2020-10-14 21:56:19,511 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2099743849] [2020-10-14 21:56:19,513 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:56:19,513 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:56:19,514 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108612409] [2020-10-14 21:56:19,515 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:56:19,516 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:56:19,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:56:19,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:56:19,517 INFO L87 Difference]: Start difference. First operand 1971 states and 2432 transitions. Second operand 7 states. [2020-10-14 21:56:34,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:56:34,810 INFO L93 Difference]: Finished difference Result 5519 states and 7141 transitions. [2020-10-14 21:56:34,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 21:56:34,811 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 316 [2020-10-14 21:56:34,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:56:34,832 INFO L225 Difference]: With dead ends: 5519 [2020-10-14 21:56:34,832 INFO L226 Difference]: Without dead ends: 4172 [2020-10-14 21:56:34,838 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2020-10-14 21:56:34,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4172 states. [2020-10-14 21:56:34,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4172 to 3224. [2020-10-14 21:56:34,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3224 states. [2020-10-14 21:56:34,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3224 states to 3224 states and 4143 transitions. [2020-10-14 21:56:34,941 INFO L78 Accepts]: Start accepts. Automaton has 3224 states and 4143 transitions. Word has length 316 [2020-10-14 21:56:34,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:56:34,941 INFO L479 AbstractCegarLoop]: Abstraction has 3224 states and 4143 transitions. [2020-10-14 21:56:34,942 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:56:34,942 INFO L276 IsEmpty]: Start isEmpty. Operand 3224 states and 4143 transitions. [2020-10-14 21:56:34,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 406 [2020-10-14 21:56:34,950 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:56:34,951 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:56:34,951 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 21:56:34,951 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:56:34,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:56:34,952 INFO L82 PathProgramCache]: Analyzing trace with hash -853880384, now seen corresponding path program 1 times [2020-10-14 21:56:34,952 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:56:34,952 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1190606049] [2020-10-14 21:56:34,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:56:35,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:56:35,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:56:35,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:56:37,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:56:37,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:56:37,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 417 [2020-10-14 21:56:37,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:56:37,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2341 [2020-10-14 21:56:37,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:56:37,397 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:56:37,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:56:37,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-14 21:56:37,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-14 21:56:37,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 21:56:37,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:56:37,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:56:37,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:56:37,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:56:37,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:56:37,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:56:37,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 21:56:37,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:56:37,526 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:56:37,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:56:37,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:56:37,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:56:37,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:56:37,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:56:37,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:56:37,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:56:37,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:56:37,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-14 21:56:37,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:56:37,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 276 [2020-10-14 21:56:37,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:56:37,884 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:56:37,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:56:37,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:56:37,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-14 21:56:37,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:56:38,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 21:56:38,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:56:38,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:56:38,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:56:38,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-14 21:56:38,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:56:38,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 232 [2020-10-14 21:56:38,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:56:38,284 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:56:38,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:56:38,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:56:38,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-14 21:56:38,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:56:38,535 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 135 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 21:56:38,536 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1190606049] [2020-10-14 21:56:38,536 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:56:38,536 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:56:38,537 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031302561] [2020-10-14 21:56:38,538 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:56:38,539 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:56:38,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:56:38,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:56:38,539 INFO L87 Difference]: Start difference. First operand 3224 states and 4143 transitions. Second operand 7 states. [2020-10-14 21:56:51,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:56:51,626 INFO L93 Difference]: Finished difference Result 8415 states and 11248 transitions. [2020-10-14 21:56:51,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 21:56:51,627 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 405 [2020-10-14 21:56:51,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:56:51,656 INFO L225 Difference]: With dead ends: 8415 [2020-10-14 21:56:51,657 INFO L226 Difference]: Without dead ends: 5504 [2020-10-14 21:56:51,668 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:56:51,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5504 states. [2020-10-14 21:56:51,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5504 to 4515. [2020-10-14 21:56:51,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4515 states. [2020-10-14 21:56:51,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4515 states to 4515 states and 5722 transitions. [2020-10-14 21:56:51,819 INFO L78 Accepts]: Start accepts. Automaton has 4515 states and 5722 transitions. Word has length 405 [2020-10-14 21:56:51,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:56:51,821 INFO L479 AbstractCegarLoop]: Abstraction has 4515 states and 5722 transitions. [2020-10-14 21:56:51,821 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:56:51,821 INFO L276 IsEmpty]: Start isEmpty. Operand 4515 states and 5722 transitions. [2020-10-14 21:56:51,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 427 [2020-10-14 21:56:51,830 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:56:51,831 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:56:51,831 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 21:56:51,832 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:56:51,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:56:51,832 INFO L82 PathProgramCache]: Analyzing trace with hash -591560490, now seen corresponding path program 1 times [2020-10-14 21:56:51,833 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:56:51,833 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [214915602] [2020-10-14 21:56:51,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:56:51,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:56:51,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:56:52,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:56:52,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:56:53,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:56:56,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:56:56,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 440 [2020-10-14 21:56:56,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 21:56:56,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-14 21:56:56,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:56:56,945 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:56:56,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:56:56,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-14 21:56:56,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 203 [2020-10-14 21:56:56,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:56:57,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:56:57,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:56:57,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:56:57,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:56:57,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:56:57,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:56:57,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 21:56:57,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:56:57,047 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:56:57,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:56:57,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:56:57,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:56:57,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:56:57,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:56:57,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:56:57,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:56:57,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:56:57,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-14 21:56:57,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:56:57,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-14 21:56:57,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:56:57,174 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:56:57,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:56:57,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:56:57,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-14 21:56:57,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:56:57,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-14 21:56:57,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:56:57,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:56:57,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:56:57,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-14 21:56:57,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:56:57,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 311 [2020-10-14 21:56:57,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:56:57,561 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:56:57,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:56:57,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:56:57,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-14 21:56:57,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:56:57,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2020-10-14 21:56:57,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:56:57,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:56:57,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:56:57,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-14 21:56:57,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:56:57,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-14 21:56:57,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:56:57,739 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:56:57,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:56:57,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-14 21:56:57,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:56:57,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:56:57,897 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 138 proven. 109 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2020-10-14 21:56:57,897 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [214915602] [2020-10-14 21:56:57,898 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:56:57,898 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:56:57,898 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130781891] [2020-10-14 21:56:57,899 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:56:57,899 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:56:57,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:56:57,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:56:57,900 INFO L87 Difference]: Start difference. First operand 4515 states and 5722 transitions. Second operand 7 states. [2020-10-14 21:57:13,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:57:13,679 INFO L93 Difference]: Finished difference Result 10363 states and 13752 transitions. [2020-10-14 21:57:13,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 21:57:13,681 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 426 [2020-10-14 21:57:13,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:57:13,711 INFO L225 Difference]: With dead ends: 10363 [2020-10-14 21:57:13,712 INFO L226 Difference]: Without dead ends: 6133 [2020-10-14 21:57:13,724 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:57:13,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6133 states. [2020-10-14 21:57:13,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6133 to 6108. [2020-10-14 21:57:13,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6108 states. [2020-10-14 21:57:13,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6108 states to 6108 states and 7342 transitions. [2020-10-14 21:57:13,884 INFO L78 Accepts]: Start accepts. Automaton has 6108 states and 7342 transitions. Word has length 426 [2020-10-14 21:57:13,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:57:13,885 INFO L479 AbstractCegarLoop]: Abstraction has 6108 states and 7342 transitions. [2020-10-14 21:57:13,885 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:57:13,885 INFO L276 IsEmpty]: Start isEmpty. Operand 6108 states and 7342 transitions. [2020-10-14 21:57:13,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 489 [2020-10-14 21:57:13,903 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:57:13,903 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:57:13,904 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 21:57:13,904 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:57:13,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:57:13,904 INFO L82 PathProgramCache]: Analyzing trace with hash -862754033, now seen corresponding path program 1 times [2020-10-14 21:57:13,905 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:57:13,905 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1593741241] [2020-10-14 21:57:13,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:57:14,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:57:14,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:57:14,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:57:15,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:57:16,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:57:19,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:57:19,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 502 [2020-10-14 21:57:19,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 21:57:19,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-14 21:57:19,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:57:19,045 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:57:19,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:57:19,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-14 21:57:19,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-14 21:57:19,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:57:19,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:57:19,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:57:19,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:57:19,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:57:19,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:57:19,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:57:19,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 21:57:19,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:57:19,167 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:57:19,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:57:19,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:57:19,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:57:19,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:57:19,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:57:19,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:57:19,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:57:19,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:57:19,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-14 21:57:19,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:57:19,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 187 [2020-10-14 21:57:19,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:57:19,435 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:57:19,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:57:19,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:57:19,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-14 21:57:19,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:57:19,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 21:57:19,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:57:19,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:57:19,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:57:19,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 21:57:19,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:57:19,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-10-14 21:57:19,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:57:19,668 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:57:19,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:57:19,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:57:19,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-14 21:57:19,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:57:19,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2020-10-14 21:57:19,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:57:19,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:57:19,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:57:19,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-14 21:57:19,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:57:19,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-14 21:57:19,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:57:19,885 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:57:19,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:57:19,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-14 21:57:19,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:57:19,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:57:20,172 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 154 proven. 81 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2020-10-14 21:57:20,173 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1593741241] [2020-10-14 21:57:20,173 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:57:20,173 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:57:20,174 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340498151] [2020-10-14 21:57:20,175 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:57:20,175 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:57:20,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:57:20,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:57:20,176 INFO L87 Difference]: Start difference. First operand 6108 states and 7342 transitions. Second operand 7 states. [2020-10-14 21:57:31,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:57:31,620 INFO L93 Difference]: Finished difference Result 12932 states and 15584 transitions. [2020-10-14 21:57:31,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 21:57:31,622 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 488 [2020-10-14 21:57:31,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:57:31,652 INFO L225 Difference]: With dead ends: 12932 [2020-10-14 21:57:31,652 INFO L226 Difference]: Without dead ends: 7137 [2020-10-14 21:57:31,669 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-14 21:57:31,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7137 states. [2020-10-14 21:57:31,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7137 to 6761. [2020-10-14 21:57:31,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6761 states. [2020-10-14 21:57:31,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6761 states to 6761 states and 7933 transitions. [2020-10-14 21:57:31,823 INFO L78 Accepts]: Start accepts. Automaton has 6761 states and 7933 transitions. Word has length 488 [2020-10-14 21:57:31,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:57:31,824 INFO L479 AbstractCegarLoop]: Abstraction has 6761 states and 7933 transitions. [2020-10-14 21:57:31,824 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:57:31,825 INFO L276 IsEmpty]: Start isEmpty. Operand 6761 states and 7933 transitions. [2020-10-14 21:57:31,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 501 [2020-10-14 21:57:31,831 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:57:31,832 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:57:31,832 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 21:57:31,832 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:57:31,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:57:31,833 INFO L82 PathProgramCache]: Analyzing trace with hash 495684567, now seen corresponding path program 1 times [2020-10-14 21:57:31,833 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:57:31,833 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1277976111] [2020-10-14 21:57:31,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:57:31,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:57:32,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:57:32,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:57:33,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:57:34,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:57:34,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 514 [2020-10-14 21:57:34,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:57:34,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2396 [2020-10-14 21:57:34,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:57:34,359 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:57:34,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:57:34,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-14 21:57:34,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-14 21:57:34,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:57:34,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:57:34,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:57:34,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:57:34,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:57:34,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:57:34,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:57:34,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 21:57:34,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:57:34,509 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:57:34,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:57:34,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:57:34,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:57:34,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:57:34,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:57:34,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:57:34,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:57:34,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:57:34,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-14 21:57:34,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:57:34,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-14 21:57:34,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:57:34,651 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:57:34,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:57:34,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:57:34,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:57:34,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:57:34,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-14 21:57:34,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:57:34,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:57:34,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:57:34,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 21:57:34,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:57:34,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-14 21:57:34,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:57:34,895 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:57:34,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:57:34,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:57:34,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-14 21:57:34,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:57:34,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-14 21:57:34,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:57:34,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:57:35,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:57:35,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-14 21:57:35,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:57:35,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-14 21:57:35,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:57:35,026 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:57:35,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:57:35,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:57:35,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-14 21:57:35,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:57:35,165 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 205 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-14 21:57:35,166 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1277976111] [2020-10-14 21:57:35,166 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:57:35,166 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:57:35,166 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068092544] [2020-10-14 21:57:35,167 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:57:35,167 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:57:35,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:57:35,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:57:35,168 INFO L87 Difference]: Start difference. First operand 6761 states and 7933 transitions. Second operand 7 states. [2020-10-14 21:57:46,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:57:46,541 INFO L93 Difference]: Finished difference Result 16087 states and 19556 transitions. [2020-10-14 21:57:46,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 21:57:46,544 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 500 [2020-10-14 21:57:46,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:57:46,579 INFO L225 Difference]: With dead ends: 16087 [2020-10-14 21:57:46,579 INFO L226 Difference]: Without dead ends: 9306 [2020-10-14 21:57:46,598 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:57:46,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9306 states. [2020-10-14 21:57:46,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9306 to 8348. [2020-10-14 21:57:46,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8348 states. [2020-10-14 21:57:46,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8348 states to 8348 states and 9715 transitions. [2020-10-14 21:57:46,851 INFO L78 Accepts]: Start accepts. Automaton has 8348 states and 9715 transitions. Word has length 500 [2020-10-14 21:57:46,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:57:46,852 INFO L479 AbstractCegarLoop]: Abstraction has 8348 states and 9715 transitions. [2020-10-14 21:57:46,852 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:57:46,853 INFO L276 IsEmpty]: Start isEmpty. Operand 8348 states and 9715 transitions. [2020-10-14 21:57:46,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 574 [2020-10-14 21:57:46,864 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:57:46,865 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:57:46,865 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 21:57:46,865 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:57:46,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:57:46,866 INFO L82 PathProgramCache]: Analyzing trace with hash -1561469953, now seen corresponding path program 1 times [2020-10-14 21:57:46,866 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:57:46,866 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [643805109] [2020-10-14 21:57:46,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:57:46,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:57:47,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:57:47,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:57:48,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:57:49,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:57:52,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:57:52,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 589 [2020-10-14 21:57:52,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 21:57:52,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-14 21:57:52,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:57:52,024 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:57:52,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:57:52,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-14 21:57:52,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-14 21:57:52,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:57:52,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:57:52,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:57:52,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:57:52,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:57:52,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:57:52,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:57:52,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 21:57:52,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:57:52,116 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:57:52,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:57:52,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:57:52,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:57:52,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:57:52,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:57:52,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:57:52,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:57:52,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:57:52,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-14 21:57:52,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:57:52,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-14 21:57:52,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:57:52,215 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:57:52,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:57:52,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:57:52,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:57:52,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:57:52,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-14 21:57:52,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:57:52,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:57:52,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:57:52,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 21:57:52,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:57:52,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-14 21:57:52,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:57:52,368 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:57:52,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:57:52,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:57:52,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-14 21:57:52,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:57:52,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-14 21:57:52,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:57:52,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:57:52,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:57:52,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 21:57:52,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:57:52,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-14 21:57:52,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:57:52,474 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:57:52,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:57:52,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:57:52,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 21:57:52,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:57:52,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 474 [2020-10-14 21:57:52,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:57:52,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:57:52,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:57:52,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 21:57:52,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:57:52,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-14 21:57:52,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:57:52,556 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:57:52,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:57:52,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-14 21:57:52,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:57:52,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:57:52,761 INFO L134 CoverageAnalysis]: Checked inductivity of 546 backedges. 201 proven. 68 refuted. 0 times theorem prover too weak. 277 trivial. 0 not checked. [2020-10-14 21:57:52,761 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [643805109] [2020-10-14 21:57:52,761 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:57:52,762 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:57:52,762 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325439020] [2020-10-14 21:57:52,763 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:57:52,763 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:57:52,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:57:52,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:57:52,763 INFO L87 Difference]: Start difference. First operand 8348 states and 9715 transitions. Second operand 7 states. [2020-10-14 21:58:07,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:58:07,130 INFO L93 Difference]: Finished difference Result 17995 states and 21717 transitions. [2020-10-14 21:58:07,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 21:58:07,133 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 573 [2020-10-14 21:58:07,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:58:07,165 INFO L225 Difference]: With dead ends: 17995 [2020-10-14 21:58:07,166 INFO L226 Difference]: Without dead ends: 9941 [2020-10-14 21:58:07,186 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:58:07,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9941 states. [2020-10-14 21:58:07,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9941 to 9919. [2020-10-14 21:58:07,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9919 states. [2020-10-14 21:58:07,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9919 states to 9919 states and 11579 transitions. [2020-10-14 21:58:07,386 INFO L78 Accepts]: Start accepts. Automaton has 9919 states and 11579 transitions. Word has length 573 [2020-10-14 21:58:07,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:58:07,387 INFO L479 AbstractCegarLoop]: Abstraction has 9919 states and 11579 transitions. [2020-10-14 21:58:07,387 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:58:07,388 INFO L276 IsEmpty]: Start isEmpty. Operand 9919 states and 11579 transitions. [2020-10-14 21:58:07,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 573 [2020-10-14 21:58:07,396 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:58:07,397 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:58:07,397 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 21:58:07,397 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:58:07,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:58:07,398 INFO L82 PathProgramCache]: Analyzing trace with hash -642789448, now seen corresponding path program 1 times [2020-10-14 21:58:07,398 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:58:07,398 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1586661349] [2020-10-14 21:58:07,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:58:07,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:58:07,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:58:08,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:58:09,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:58:09,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 586 [2020-10-14 21:58:09,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:58:09,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1782 [2020-10-14 21:58:09,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:58:09,326 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:58:09,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:58:09,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-14 21:58:09,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 157 [2020-10-14 21:58:09,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:58:09,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:58:09,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:58:09,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:58:09,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:58:09,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:58:09,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:58:09,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 21:58:09,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:58:09,441 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:58:09,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:58:09,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:58:09,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:58:09,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:58:09,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:58:09,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:58:09,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:58:09,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:58:09,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-14 21:58:09,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:58:09,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-14 21:58:09,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:58:09,587 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:58:09,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:58:09,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:58:09,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:58:09,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:58:09,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-14 21:58:09,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:58:09,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:58:09,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:58:09,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 21:58:09,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:58:09,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-14 21:58:09,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:58:09,805 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:58:09,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:58:09,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:58:09,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-14 21:58:09,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:58:09,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-14 21:58:09,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:58:09,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:58:10,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:58:10,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-10-14 21:58:10,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:58:10,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 233 [2020-10-14 21:58:10,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:58:10,103 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:58:10,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:58:10,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:58:10,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 155 [2020-10-14 21:58:10,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:58:10,415 INFO L134 CoverageAnalysis]: Checked inductivity of 418 backedges. 306 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-14 21:58:10,416 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1586661349] [2020-10-14 21:58:10,416 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:58:10,416 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:58:10,416 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180943638] [2020-10-14 21:58:10,417 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:58:10,417 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:58:10,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:58:10,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:58:10,417 INFO L87 Difference]: Start difference. First operand 9919 states and 11579 transitions. Second operand 7 states. [2020-10-14 21:58:22,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:58:22,473 INFO L93 Difference]: Finished difference Result 21400 states and 25687 transitions. [2020-10-14 21:58:22,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 21:58:22,476 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 572 [2020-10-14 21:58:22,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:58:22,525 INFO L225 Difference]: With dead ends: 21400 [2020-10-14 21:58:22,526 INFO L226 Difference]: Without dead ends: 13035 [2020-10-14 21:58:22,549 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:58:22,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13035 states. [2020-10-14 21:58:22,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13035 to 11785. [2020-10-14 21:58:22,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11785 states. [2020-10-14 21:58:22,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11785 states to 11785 states and 13855 transitions. [2020-10-14 21:58:22,814 INFO L78 Accepts]: Start accepts. Automaton has 11785 states and 13855 transitions. Word has length 572 [2020-10-14 21:58:22,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:58:22,815 INFO L479 AbstractCegarLoop]: Abstraction has 11785 states and 13855 transitions. [2020-10-14 21:58:22,815 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:58:22,815 INFO L276 IsEmpty]: Start isEmpty. Operand 11785 states and 13855 transitions. [2020-10-14 21:58:22,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 611 [2020-10-14 21:58:22,827 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:58:22,829 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 21:58:22,830 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 21:58:22,830 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:58:22,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:58:22,831 INFO L82 PathProgramCache]: Analyzing trace with hash -776573226, now seen corresponding path program 1 times [2020-10-14 21:58:22,831 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:58:22,831 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [296442003] [2020-10-14 21:58:22,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:58:22,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:58:23,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:58:23,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:58:25,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:58:25,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 624 [2020-10-14 21:58:25,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:58:25,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2245 [2020-10-14 21:58:25,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:58:25,262 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:58:25,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:58:25,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 491 [2020-10-14 21:58:25,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-14 21:58:25,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:58:25,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:58:25,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:58:25,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:58:25,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:58:25,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:58:25,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:58:25,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 21:58:25,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:58:25,395 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:58:25,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:58:25,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:58:25,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:58:25,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:58:25,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:58:25,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:58:25,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:58:25,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:58:25,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-14 21:58:25,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:58:25,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-14 21:58:25,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:58:25,510 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:58:25,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:58:25,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:58:25,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:58:25,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:58:25,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-14 21:58:25,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:58:25,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:58:25,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:58:25,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-14 21:58:25,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:58:25,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-14 21:58:25,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:58:25,732 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:58:25,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:58:25,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:58:25,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 188 [2020-10-14 21:58:25,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:58:25,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 487 [2020-10-14 21:58:25,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:58:25,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:58:25,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:58:25,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-14 21:58:25,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:58:25,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-14 21:58:25,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:58:25,899 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:58:25,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:58:25,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:58:25,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-14 21:58:25,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:58:26,201 INFO L134 CoverageAnalysis]: Checked inductivity of 455 backedges. 261 proven. 2 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2020-10-14 21:58:26,202 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [296442003] [2020-10-14 21:58:26,202 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:58:26,202 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:58:26,202 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693232991] [2020-10-14 21:58:26,203 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:58:26,203 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:58:26,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:58:26,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:58:26,204 INFO L87 Difference]: Start difference. First operand 11785 states and 13855 transitions. Second operand 7 states. [2020-10-14 21:58:37,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:58:37,594 INFO L93 Difference]: Finished difference Result 26395 states and 31746 transitions. [2020-10-14 21:58:37,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 21:58:37,601 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 610 [2020-10-14 21:58:37,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:58:37,660 INFO L225 Difference]: With dead ends: 26395 [2020-10-14 21:58:37,660 INFO L226 Difference]: Without dead ends: 14923 [2020-10-14 21:58:37,691 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:58:37,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14923 states. [2020-10-14 21:58:38,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14923 to 14604. [2020-10-14 21:58:38,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14604 states. [2020-10-14 21:58:38,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14604 states to 14604 states and 17580 transitions. [2020-10-14 21:58:38,043 INFO L78 Accepts]: Start accepts. Automaton has 14604 states and 17580 transitions. Word has length 610 [2020-10-14 21:58:38,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:58:38,044 INFO L479 AbstractCegarLoop]: Abstraction has 14604 states and 17580 transitions. [2020-10-14 21:58:38,044 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:58:38,044 INFO L276 IsEmpty]: Start isEmpty. Operand 14604 states and 17580 transitions. [2020-10-14 21:58:38,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 629 [2020-10-14 21:58:38,057 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:58:38,058 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 21:58:38,058 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 21:58:38,059 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:58:38,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:58:38,059 INFO L82 PathProgramCache]: Analyzing trace with hash 951861076, now seen corresponding path program 1 times [2020-10-14 21:58:38,060 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:58:38,061 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1693636671] [2020-10-14 21:58:38,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:58:38,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:58:38,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:58:38,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:58:41,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:58:41,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 642 [2020-10-14 21:58:41,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:58:41,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3251 [2020-10-14 21:58:41,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:58:41,513 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:58:41,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:58:41,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-14 21:58:41,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 232 [2020-10-14 21:58:41,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:58:41,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:58:41,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:58:41,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:58:41,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:58:41,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:58:41,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:58:41,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 21:58:41,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:58:41,725 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:58:41,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:58:41,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:58:41,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:58:41,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:58:41,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:58:41,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:58:41,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:58:41,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:58:41,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-14 21:58:41,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:58:41,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-14 21:58:41,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:58:41,857 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:58:41,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:58:41,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:58:41,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:58:41,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:58:41,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-14 21:58:41,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:58:41,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:58:42,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:58:42,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 21:58:42,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:58:42,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-14 21:58:42,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:58:42,045 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:58:42,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:58:42,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:58:42,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-14 21:58:42,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:58:42,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-14 21:58:42,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:58:42,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:58:42,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:58:42,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 211 [2020-10-14 21:58:42,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:58:42,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 215 [2020-10-14 21:58:42,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:58:42,318 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:58:42,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:58:42,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:58:42,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 211 [2020-10-14 21:58:42,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:58:42,694 INFO L134 CoverageAnalysis]: Checked inductivity of 472 backedges. 343 proven. 15 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2020-10-14 21:58:42,695 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1693636671] [2020-10-14 21:58:42,695 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:58:42,695 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 21:58:42,695 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481986836] [2020-10-14 21:58:42,696 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 21:58:42,697 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:58:42,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 21:58:42,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 21:58:42,697 INFO L87 Difference]: Start difference. First operand 14604 states and 17580 transitions. Second operand 6 states. [2020-10-14 21:58:56,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:58:56,965 INFO L93 Difference]: Finished difference Result 35265 states and 43413 transitions. [2020-10-14 21:58:56,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 21:58:56,970 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 628 [2020-10-14 21:58:56,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:58:57,066 INFO L225 Difference]: With dead ends: 35265 [2020-10-14 21:58:57,066 INFO L226 Difference]: Without dead ends: 22524 [2020-10-14 21:58:57,094 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 21:58:57,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22524 states. [2020-10-14 21:58:57,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22524 to 21876. [2020-10-14 21:58:57,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21876 states. [2020-10-14 21:58:57,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21876 states to 21876 states and 26248 transitions. [2020-10-14 21:58:57,590 INFO L78 Accepts]: Start accepts. Automaton has 21876 states and 26248 transitions. Word has length 628 [2020-10-14 21:58:57,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:58:57,591 INFO L479 AbstractCegarLoop]: Abstraction has 21876 states and 26248 transitions. [2020-10-14 21:58:57,591 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 21:58:57,592 INFO L276 IsEmpty]: Start isEmpty. Operand 21876 states and 26248 transitions. [2020-10-14 21:58:57,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 667 [2020-10-14 21:58:57,606 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:58:57,606 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:58:57,607 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 21:58:57,607 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:58:57,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:58:57,608 INFO L82 PathProgramCache]: Analyzing trace with hash -1389198950, now seen corresponding path program 1 times [2020-10-14 21:58:57,608 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:58:57,608 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [489388284] [2020-10-14 21:58:57,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:58:57,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:58:57,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:58:57,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking...