/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem03_label52.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 00:55:28,100 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 00:55:28,103 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 00:55:28,126 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 00:55:28,127 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 00:55:28,128 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 00:55:28,129 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 00:55:28,131 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 00:55:28,133 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 00:55:28,134 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 00:55:28,135 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 00:55:28,136 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 00:55:28,136 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 00:55:28,137 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 00:55:28,138 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 00:55:28,139 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 00:55:28,140 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 00:55:28,141 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 00:55:28,142 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 00:55:28,144 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 00:55:28,145 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 00:55:28,146 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 00:55:28,147 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 00:55:28,148 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 00:55:28,150 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 00:55:28,151 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 00:55:28,151 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 00:55:28,152 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 00:55:28,152 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 00:55:28,153 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 00:55:28,153 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 00:55:28,154 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 00:55:28,155 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 00:55:28,156 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 00:55:28,157 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 00:55:28,157 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 00:55:28,157 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 00:55:28,158 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 00:55:28,158 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 00:55:28,159 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 00:55:28,159 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 00:55:28,160 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 00:55:28,182 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 00:55:28,182 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 00:55:28,183 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 00:55:28,183 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 00:55:28,184 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 00:55:28,184 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 00:55:28,184 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 00:55:28,184 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 00:55:28,184 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 00:55:28,185 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 00:55:28,185 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 00:55:28,185 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 00:55:28,185 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 00:55:28,185 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 00:55:28,186 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 00:55:28,186 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 00:55:28,186 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 00:55:28,186 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 00:55:28,186 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 00:55:28,187 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 00:55:28,187 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 00:55:28,187 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 00:55:28,187 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 00:55:28,187 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 00:55:28,188 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 00:55:28,188 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 00:55:28,188 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 00:55:28,188 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 00:55:28,188 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 00:55:28,188 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 00:55:28,504 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 00:55:28,524 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 00:55:28,528 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 00:55:28,531 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 00:55:28,531 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 00:55:28,532 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label52.c [2020-10-14 00:55:28,615 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/29f1b654a/30a2145b924f44a6aee54e086f123429/FLAG9cab19adc [2020-10-14 00:55:29,278 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 00:55:29,280 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem03_label52.c [2020-10-14 00:55:29,300 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/29f1b654a/30a2145b924f44a6aee54e086f123429/FLAG9cab19adc [2020-10-14 00:55:29,454 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/29f1b654a/30a2145b924f44a6aee54e086f123429 [2020-10-14 00:55:29,462 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 00:55:29,464 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 00:55:29,465 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 00:55:29,465 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 00:55:29,468 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 00:55:29,469 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 12:55:29" (1/1) ... [2020-10-14 00:55:29,472 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d72532b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:55:29, skipping insertion in model container [2020-10-14 00:55:29,473 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 12:55:29" (1/1) ... [2020-10-14 00:55:29,481 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 00:55:29,555 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 00:55:30,389 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 00:55:30,399 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 00:55:30,669 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 00:55:30,697 INFO L208 MainTranslator]: Completed translation [2020-10-14 00:55:30,705 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:55:30 WrapperNode [2020-10-14 00:55:30,705 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 00:55:30,706 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 00:55:30,707 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 00:55:30,707 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 00:55:30,726 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:55:30" (1/1) ... [2020-10-14 00:55:30,729 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:55:30" (1/1) ... [2020-10-14 00:55:30,784 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:55:30" (1/1) ... [2020-10-14 00:55:30,785 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:55:30" (1/1) ... [2020-10-14 00:55:30,865 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:55:30" (1/1) ... [2020-10-14 00:55:30,894 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:55:30" (1/1) ... [2020-10-14 00:55:30,911 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:55:30" (1/1) ... [2020-10-14 00:55:30,928 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 00:55:30,929 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 00:55:30,929 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 00:55:30,929 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 00:55:30,930 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:55:30" (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 00:55:31,004 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 00:55:31,004 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 00:55:31,004 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 00:55:31,004 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 00:55:31,005 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 00:55:31,005 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 00:55:31,005 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 00:55:31,005 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 00:55:31,005 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 00:55:31,006 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 00:55:31,006 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 00:55:33,143 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 00:55:33,144 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 00:55:33,151 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 12:55:33 BoogieIcfgContainer [2020-10-14 00:55:33,151 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 00:55:33,152 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 00:55:33,152 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 00:55:33,156 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 00:55:33,156 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 12:55:29" (1/3) ... [2020-10-14 00:55:33,159 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2defc685 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 12:55:33, skipping insertion in model container [2020-10-14 00:55:33,160 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:55:30" (2/3) ... [2020-10-14 00:55:33,160 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2defc685 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 12:55:33, skipping insertion in model container [2020-10-14 00:55:33,160 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 12:55:33" (3/3) ... [2020-10-14 00:55:33,162 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem03_label52.c [2020-10-14 00:55:33,173 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 00:55:33,182 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 00:55:33,197 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 00:55:33,227 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 00:55:33,228 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 00:55:33,228 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 00:55:33,228 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 00:55:33,228 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 00:55:33,228 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 00:55:33,229 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 00:55:33,229 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 00:55:33,259 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states. [2020-10-14 00:55:33,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-14 00:55:33,276 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:55:33,277 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:55:33,278 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:55:33,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:55:33,286 INFO L82 PathProgramCache]: Analyzing trace with hash -724563731, now seen corresponding path program 1 times [2020-10-14 00:55:33,297 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:55:33,298 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1374328409] [2020-10-14 00:55:33,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:55:33,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:55:33,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:34,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:37,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:55:37,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-14 00:55:37,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:55:37,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3809 [2020-10-14 00:55:37,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:55:37,569 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:55:37,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 00:55:37,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 00:55:37,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-14 00:55:37,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 00:55:37,926 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:55:37,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:55:37,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:55:37,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:37,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:55:37,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:55:37,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:55:37,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 00:55:37,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:55:37,957 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:55:37,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:55:37,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:55:37,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 00:55:37,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:55:38,032 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 00:55:38,033 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1374328409] [2020-10-14 00:55:38,035 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 00:55:38,036 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 00:55:38,037 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576519978] [2020-10-14 00:55:38,042 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 00:55:38,043 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:55:38,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 00:55:38,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 00:55:38,060 INFO L87 Difference]: Start difference. First operand 311 states. Second operand 5 states. [2020-10-14 00:55:38,289 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:55:38,839 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 00:55:42,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:55:42,458 INFO L93 Difference]: Finished difference Result 1107 states and 1968 transitions. [2020-10-14 00:55:42,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 00:55:42,460 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 152 [2020-10-14 00:55:42,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:55:42,483 INFO L225 Difference]: With dead ends: 1107 [2020-10-14 00:55:42,483 INFO L226 Difference]: Without dead ends: 699 [2020-10-14 00:55:42,493 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:55:42,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 699 states. [2020-10-14 00:55:42,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 699 to 474. [2020-10-14 00:55:42,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 474 states. [2020-10-14 00:55:42,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 474 states to 474 states and 720 transitions. [2020-10-14 00:55:42,586 INFO L78 Accepts]: Start accepts. Automaton has 474 states and 720 transitions. Word has length 152 [2020-10-14 00:55:42,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:55:42,587 INFO L479 AbstractCegarLoop]: Abstraction has 474 states and 720 transitions. [2020-10-14 00:55:42,587 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 00:55:42,587 INFO L276 IsEmpty]: Start isEmpty. Operand 474 states and 720 transitions. [2020-10-14 00:55:42,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-10-14 00:55:42,592 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:55:42,593 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 00:55:42,593 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 00:55:42,593 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:55:42,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:55:42,594 INFO L82 PathProgramCache]: Analyzing trace with hash 1465869913, now seen corresponding path program 1 times [2020-10-14 00:55:42,594 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:55:42,594 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [312848559] [2020-10-14 00:55:42,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:55:42,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:55:42,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:43,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:44,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:55:44,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-14 00:55:44,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:55:44,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2130 [2020-10-14 00:55:44,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:55:44,807 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:55:44,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:55:44,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-14 00:55:44,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 151 [2020-10-14 00:55:44,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:55:45,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:55:45,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:55:45,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:45,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:55:45,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:55:45,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:55:45,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 00:55:45,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:55:45,029 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:55:45,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:55:45,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:55:45,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:55:45,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:55:45,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:55:45,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:55:45,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:45,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:55:45,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 00:55:45,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:55:45,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-14 00:55:45,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:55:45,147 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:55:45,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:55:45,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:55:45,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:55:45,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:55:45,204 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 00:55:45,204 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [312848559] [2020-10-14 00:55:45,205 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:55:45,205 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 00:55:45,205 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131406488] [2020-10-14 00:55:45,207 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 00:55:45,207 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:55:45,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 00:55:45,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 00:55:45,208 INFO L87 Difference]: Start difference. First operand 474 states and 720 transitions. Second operand 5 states. [2020-10-14 00:55:45,431 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:55:47,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:55:47,892 INFO L93 Difference]: Finished difference Result 1371 states and 2112 transitions. [2020-10-14 00:55:47,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 00:55:47,893 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 164 [2020-10-14 00:55:47,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:55:47,909 INFO L225 Difference]: With dead ends: 1371 [2020-10-14 00:55:47,909 INFO L226 Difference]: Without dead ends: 903 [2020-10-14 00:55:47,912 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 00:55:47,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 903 states. [2020-10-14 00:55:47,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 903 to 898. [2020-10-14 00:55:47,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 898 states. [2020-10-14 00:55:47,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 898 states to 898 states and 1282 transitions. [2020-10-14 00:55:47,998 INFO L78 Accepts]: Start accepts. Automaton has 898 states and 1282 transitions. Word has length 164 [2020-10-14 00:55:47,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:55:48,000 INFO L479 AbstractCegarLoop]: Abstraction has 898 states and 1282 transitions. [2020-10-14 00:55:48,000 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 00:55:48,000 INFO L276 IsEmpty]: Start isEmpty. Operand 898 states and 1282 transitions. [2020-10-14 00:55:48,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-10-14 00:55:48,010 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:55:48,011 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2020-10-14 00:55:48,011 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 00:55:48,011 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:55:48,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:55:48,012 INFO L82 PathProgramCache]: Analyzing trace with hash 1447114224, now seen corresponding path program 1 times [2020-10-14 00:55:48,012 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:55:48,012 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1639734240] [2020-10-14 00:55:48,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:55:48,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:55:48,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:48,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:49,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:49,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:51,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:53,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:55:53,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-10-14 00:55:53,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 00:55:53,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5045 [2020-10-14 00:55:53,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:55:53,111 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:55:53,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:55:53,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-14 00:55:53,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 153 [2020-10-14 00:55:53,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:55:53,367 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:55:53,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:55:53,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:55:53,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:53,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:55:53,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:55:53,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:55:53,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 00:55:53,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:55:53,381 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:55:53,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:55:53,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:55:53,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:55:53,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:55:53,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:55:53,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:55:53,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:53,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:55:53,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 00:55:53,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:55:53,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 00:55:53,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:55:53,472 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:55:53,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:55:53,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:55:53,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:55:53,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:55:53,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 00:55:53,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:55:53,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:53,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:55:53,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 00:55:53,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:55:53,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 00:55:53,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:55:53,507 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:55:53,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:55:53,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:55:53,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-14 00:55:53,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:55:53,605 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 15 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-14 00:55:53,606 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1639734240] [2020-10-14 00:55:53,606 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:55:53,606 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 00:55:53,608 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327478852] [2020-10-14 00:55:53,609 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 00:55:53,609 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:55:53,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 00:55:53,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 00:55:53,610 INFO L87 Difference]: Start difference. First operand 898 states and 1282 transitions. Second operand 5 states. [2020-10-14 00:55:53,921 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:55:56,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:55:56,689 INFO L93 Difference]: Finished difference Result 2633 states and 3823 transitions. [2020-10-14 00:55:56,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 00:55:56,692 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 174 [2020-10-14 00:55:56,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:55:56,706 INFO L225 Difference]: With dead ends: 2633 [2020-10-14 00:55:56,707 INFO L226 Difference]: Without dead ends: 1741 [2020-10-14 00:55:56,710 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 00:55:56,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1741 states. [2020-10-14 00:55:56,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1741 to 1734. [2020-10-14 00:55:56,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1734 states. [2020-10-14 00:55:56,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1734 states to 1734 states and 2445 transitions. [2020-10-14 00:55:56,782 INFO L78 Accepts]: Start accepts. Automaton has 1734 states and 2445 transitions. Word has length 174 [2020-10-14 00:55:56,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:55:56,783 INFO L479 AbstractCegarLoop]: Abstraction has 1734 states and 2445 transitions. [2020-10-14 00:55:56,783 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 00:55:56,792 INFO L276 IsEmpty]: Start isEmpty. Operand 1734 states and 2445 transitions. [2020-10-14 00:55:56,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-10-14 00:55:56,807 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:55:56,807 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:55:56,807 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 00:55:56,808 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:55:56,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:55:56,808 INFO L82 PathProgramCache]: Analyzing trace with hash -831798998, now seen corresponding path program 1 times [2020-10-14 00:55:56,808 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:55:56,809 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1805176768] [2020-10-14 00:55:56,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:55:56,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:55:56,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:57,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:00,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:56:00,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-14 00:56:00,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:56:00,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3146 [2020-10-14 00:56:00,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:56:00,042 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:56:00,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:56:00,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-14 00:56:00,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 151 [2020-10-14 00:56:00,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 00:56:00,342 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:56:00,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:56:00,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:56:00,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:00,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:56:00,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:56:00,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:56:00,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 00:56:00,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:56:00,358 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:56:00,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:56:00,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:56:00,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:56:00,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:56:00,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:56:00,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:56:00,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:00,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:56:00,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-14 00:56:00,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:56:00,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-14 00:56:00,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:56:00,516 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:56:00,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:56:00,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:56:00,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-14 00:56:00,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 00:56:00,597 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 28 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 00:56:00,598 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1805176768] [2020-10-14 00:56:00,599 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:56:00,599 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 00:56:00,599 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234822438] [2020-10-14 00:56:00,600 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 00:56:00,600 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:56:00,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 00:56:00,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 00:56:00,601 INFO L87 Difference]: Start difference. First operand 1734 states and 2445 transitions. Second operand 5 states. [2020-10-14 00:56:00,864 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:56:03,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:56:03,360 INFO L93 Difference]: Finished difference Result 4305 states and 6185 transitions. [2020-10-14 00:56:03,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 00:56:03,362 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 184 [2020-10-14 00:56:03,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:56:03,375 INFO L225 Difference]: With dead ends: 4305 [2020-10-14 00:56:03,375 INFO L226 Difference]: Without dead ends: 2577 [2020-10-14 00:56:03,380 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 00:56:03,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2577 states. [2020-10-14 00:56:03,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2577 to 2570. [2020-10-14 00:56:03,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2570 states. [2020-10-14 00:56:03,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2570 states to 2570 states and 3460 transitions. [2020-10-14 00:56:03,470 INFO L78 Accepts]: Start accepts. Automaton has 2570 states and 3460 transitions. Word has length 184 [2020-10-14 00:56:03,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:56:03,471 INFO L479 AbstractCegarLoop]: Abstraction has 2570 states and 3460 transitions. [2020-10-14 00:56:03,471 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 00:56:03,471 INFO L276 IsEmpty]: Start isEmpty. Operand 2570 states and 3460 transitions. [2020-10-14 00:56:03,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2020-10-14 00:56:03,479 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:56:03,479 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:56:03,480 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 00:56:03,480 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:56:03,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:56:03,480 INFO L82 PathProgramCache]: Analyzing trace with hash 1554747814, now seen corresponding path program 1 times [2020-10-14 00:56:03,481 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:56:03,481 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [16508295] [2020-10-14 00:56:03,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:56:03,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:56:03,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:04,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:56:04,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-14 00:56:04,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:56:04,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 730 [2020-10-14 00:56:04,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:56:04,268 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:56:04,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 00:56:04,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 00:56:04,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-14 00:56:04,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:56:04,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:56:04,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:56:04,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:04,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:56:04,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:56:04,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:56:04,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 00:56:04,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:56:04,453 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:56:04,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:56:04,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:56:04,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 00:56:04,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 00:56:04,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:56:04,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:56:04,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:04,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:56:04,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-14 00:56:04,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:56:04,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 164 [2020-10-14 00:56:04,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:56:04,779 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:56:04,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:56:04,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:56:04,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-14 00:56:04,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:56:04,956 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 00:56:04,956 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [16508295] [2020-10-14 00:56:04,957 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 00:56:04,957 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 00:56:04,957 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048943041] [2020-10-14 00:56:04,958 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 00:56:04,959 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:56:04,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 00:56:04,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:56:04,960 INFO L87 Difference]: Start difference. First operand 2570 states and 3460 transitions. Second operand 7 states. [2020-10-14 00:56:05,167 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 00:56:05,697 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-14 00:56:08,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:56:08,224 INFO L93 Difference]: Finished difference Result 6474 states and 9141 transitions. [2020-10-14 00:56:08,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 00:56:08,224 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 186 [2020-10-14 00:56:08,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:56:08,247 INFO L225 Difference]: With dead ends: 6474 [2020-10-14 00:56:08,248 INFO L226 Difference]: Without dead ends: 3910 [2020-10-14 00:56:08,256 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-10-14 00:56:08,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3910 states. [2020-10-14 00:56:08,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3910 to 3877. [2020-10-14 00:56:08,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3877 states. [2020-10-14 00:56:08,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3877 states to 3877 states and 5252 transitions. [2020-10-14 00:56:08,418 INFO L78 Accepts]: Start accepts. Automaton has 3877 states and 5252 transitions. Word has length 186 [2020-10-14 00:56:08,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:56:08,419 INFO L479 AbstractCegarLoop]: Abstraction has 3877 states and 5252 transitions. [2020-10-14 00:56:08,419 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 00:56:08,419 INFO L276 IsEmpty]: Start isEmpty. Operand 3877 states and 5252 transitions. [2020-10-14 00:56:08,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2020-10-14 00:56:08,431 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:56:08,431 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:56:08,432 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 00:56:08,432 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:56:08,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:56:08,432 INFO L82 PathProgramCache]: Analyzing trace with hash -1314612505, now seen corresponding path program 1 times [2020-10-14 00:56:08,433 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:56:08,433 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [147546508] [2020-10-14 00:56:08,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:56:08,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:56:08,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:08,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:10,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:10,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:13,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:56:13,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 221 [2020-10-14 00:56:13,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 00:56:13,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5053 [2020-10-14 00:56:13,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:56:13,535 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:56:13,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:56:13,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-14 00:56:13,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-14 00:56:13,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:56:13,761 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:56:13,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:56:13,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:56:13,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:13,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:56:13,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:56:13,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:56:13,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 00:56:13,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:56:13,775 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:56:13,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:56:13,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:56:13,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:56:13,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 00:56:13,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:56:13,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:56:13,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:13,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:56:13,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-14 00:56:13,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:56:13,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-14 00:56:13,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:56:13,952 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:56:13,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:56:13,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:56:13,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 00:56:13,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:56:13,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-14 00:56:13,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:56:14,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:14,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:56:14,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-14 00:56:14,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:56:14,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-14 00:56:14,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:56:14,124 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:56:14,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:56:14,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:56:14,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-14 00:56:14,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:56:14,214 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 71 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 00:56:14,215 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [147546508] [2020-10-14 00:56:14,216 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:56:14,216 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 00:56:14,217 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130261087] [2020-10-14 00:56:14,217 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 00:56:14,218 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:56:14,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 00:56:14,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:56:14,218 INFO L87 Difference]: Start difference. First operand 3877 states and 5252 transitions. Second operand 7 states. [2020-10-14 00:56:14,362 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-14 00:56:17,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:56:17,250 INFO L93 Difference]: Finished difference Result 7825 states and 10906 transitions. [2020-10-14 00:56:17,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 00:56:17,251 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 209 [2020-10-14 00:56:17,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:56:17,271 INFO L225 Difference]: With dead ends: 7825 [2020-10-14 00:56:17,271 INFO L226 Difference]: Without dead ends: 3954 [2020-10-14 00:56:17,281 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 00:56:17,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3954 states. [2020-10-14 00:56:17,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3954 to 3894. [2020-10-14 00:56:17,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3894 states. [2020-10-14 00:56:17,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3894 states to 3894 states and 5097 transitions. [2020-10-14 00:56:17,392 INFO L78 Accepts]: Start accepts. Automaton has 3894 states and 5097 transitions. Word has length 209 [2020-10-14 00:56:17,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:56:17,392 INFO L479 AbstractCegarLoop]: Abstraction has 3894 states and 5097 transitions. [2020-10-14 00:56:17,392 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 00:56:17,393 INFO L276 IsEmpty]: Start isEmpty. Operand 3894 states and 5097 transitions. [2020-10-14 00:56:17,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2020-10-14 00:56:17,404 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:56:17,405 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-14 00:56:17,405 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 00:56:17,405 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:56:17,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:56:17,406 INFO L82 PathProgramCache]: Analyzing trace with hash -1860714604, now seen corresponding path program 1 times [2020-10-14 00:56:17,406 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:56:17,406 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1254210768] [2020-10-14 00:56:17,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:56:17,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:56:17,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:17,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:19,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:21,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:22,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:56:22,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 243 [2020-10-14 00:56:22,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 00:56:22,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4608 [2020-10-14 00:56:22,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:56:22,071 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:56:22,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:56:22,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-14 00:56:22,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-14 00:56:22,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:56:22,230 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:56:22,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:56:22,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:56:22,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:22,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:56:22,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:56:22,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:56:22,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 00:56:22,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:56:22,241 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:56:22,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:56:22,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:56:22,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:56:22,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:56:22,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:56:22,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:56:22,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:22,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:56:22,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-14 00:56:22,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:56:22,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-14 00:56:22,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:56:22,373 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:56:22,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:56:22,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:56:22,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-14 00:56:22,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:56:22,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-14 00:56:22,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:56:22,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:22,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:56:22,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-14 00:56:22,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:56:22,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-14 00:56:22,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:56:22,473 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:56:22,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:56:22,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:56:22,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-14 00:56:22,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:56:22,619 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 104 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 00:56:22,620 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1254210768] [2020-10-14 00:56:22,620 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:56:22,620 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 00:56:22,621 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285197189] [2020-10-14 00:56:22,621 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 00:56:22,622 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:56:22,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 00:56:22,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:56:22,622 INFO L87 Difference]: Start difference. First operand 3894 states and 5097 transitions. Second operand 7 states. [2020-10-14 00:56:22,916 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:56:24,093 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-14 00:56:26,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:56:26,077 INFO L93 Difference]: Finished difference Result 7982 states and 11236 transitions. [2020-10-14 00:56:26,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 00:56:26,078 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 231 [2020-10-14 00:56:26,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:56:26,101 INFO L225 Difference]: With dead ends: 7982 [2020-10-14 00:56:26,101 INFO L226 Difference]: Without dead ends: 4094 [2020-10-14 00:56:26,111 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-14 00:56:26,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4094 states. [2020-10-14 00:56:26,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4094 to 3937. [2020-10-14 00:56:26,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3937 states. [2020-10-14 00:56:26,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3937 states to 3937 states and 4993 transitions. [2020-10-14 00:56:26,244 INFO L78 Accepts]: Start accepts. Automaton has 3937 states and 4993 transitions. Word has length 231 [2020-10-14 00:56:26,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:56:26,244 INFO L479 AbstractCegarLoop]: Abstraction has 3937 states and 4993 transitions. [2020-10-14 00:56:26,244 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 00:56:26,245 INFO L276 IsEmpty]: Start isEmpty. Operand 3937 states and 4993 transitions. [2020-10-14 00:56:26,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2020-10-14 00:56:26,257 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:56:26,258 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:56:26,258 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 00:56:26,258 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:56:26,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:56:26,259 INFO L82 PathProgramCache]: Analyzing trace with hash 327179911, now seen corresponding path program 1 times [2020-10-14 00:56:26,259 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:56:26,259 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [154236262] [2020-10-14 00:56:26,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:56:26,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:56:26,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:26,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:29,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:56:29,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-14 00:56:29,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:56:29,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2767 [2020-10-14 00:56:29,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:56:29,125 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:56:29,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:56:29,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 88 [2020-10-14 00:56:29,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 151 [2020-10-14 00:56:29,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:56:29,321 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:56:29,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:56:29,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:56:29,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:29,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:56:29,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:56:29,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:56:29,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 00:56:29,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:56:29,333 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:56:29,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:56:29,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:56:29,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:56:29,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:56:29,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:56:29,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:56:29,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:29,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:56:29,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-14 00:56:29,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:56:29,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-14 00:56:29,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:56:29,571 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:56:29,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:56:29,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:56:29,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-14 00:56:29,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:56:29,701 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 74 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 00:56:29,702 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [154236262] [2020-10-14 00:56:29,702 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:56:29,702 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 00:56:29,703 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668216962] [2020-10-14 00:56:29,704 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 00:56:29,704 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:56:29,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 00:56:29,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 00:56:29,705 INFO L87 Difference]: Start difference. First operand 3937 states and 4993 transitions. Second operand 5 states. [2020-10-14 00:56:29,922 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:56:32,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:56:32,702 INFO L93 Difference]: Finished difference Result 11725 states and 15208 transitions. [2020-10-14 00:56:32,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 00:56:32,708 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 230 [2020-10-14 00:56:32,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:56:32,756 INFO L225 Difference]: With dead ends: 11725 [2020-10-14 00:56:32,757 INFO L226 Difference]: Without dead ends: 7794 [2020-10-14 00:56:32,768 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 00:56:32,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7794 states. [2020-10-14 00:56:32,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7794 to 7765. [2020-10-14 00:56:32,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7765 states. [2020-10-14 00:56:33,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7765 states to 7765 states and 10026 transitions. [2020-10-14 00:56:33,003 INFO L78 Accepts]: Start accepts. Automaton has 7765 states and 10026 transitions. Word has length 230 [2020-10-14 00:56:33,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:56:33,004 INFO L479 AbstractCegarLoop]: Abstraction has 7765 states and 10026 transitions. [2020-10-14 00:56:33,004 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 00:56:33,004 INFO L276 IsEmpty]: Start isEmpty. Operand 7765 states and 10026 transitions. [2020-10-14 00:56:33,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2020-10-14 00:56:33,030 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:56:33,030 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 00:56:33,031 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 00:56:33,031 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:56:33,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:56:33,031 INFO L82 PathProgramCache]: Analyzing trace with hash -2026304413, now seen corresponding path program 1 times [2020-10-14 00:56:33,032 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:56:33,032 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [765782577] [2020-10-14 00:56:33,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:56:33,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:56:33,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:34,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:56:34,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 242 [2020-10-14 00:56:34,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:56:34,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 905 [2020-10-14 00:56:34,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:56:34,029 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:56:34,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 00:56:34,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 00:56:34,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-14 00:56:34,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:56:34,209 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:56:34,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:56:34,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:56:34,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:34,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:56:34,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:56:34,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:56:34,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-14 00:56:34,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:56:34,237 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:56:34,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:56:34,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:56:34,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 00:56:34,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:56:34,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:56:34,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:56:34,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:34,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:56:34,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-14 00:56:34,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:56:34,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 216 [2020-10-14 00:56:34,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:56:34,562 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:56:34,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:56:34,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:56:34,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 00:56:34,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:56:34,869 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 00:56:34,870 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [765782577] [2020-10-14 00:56:34,871 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 00:56:34,871 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 00:56:34,871 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162978733] [2020-10-14 00:56:34,872 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 00:56:34,872 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:56:34,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 00:56:34,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:56:34,873 INFO L87 Difference]: Start difference. First operand 7765 states and 10026 transitions. Second operand 7 states. [2020-10-14 00:56:35,013 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:56:35,366 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 00:56:37,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:56:37,613 INFO L93 Difference]: Finished difference Result 15624 states and 20266 transitions. [2020-10-14 00:56:37,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 00:56:37,614 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 232 [2020-10-14 00:56:37,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:56:37,638 INFO L225 Difference]: With dead ends: 15624 [2020-10-14 00:56:37,638 INFO L226 Difference]: Without dead ends: 7865 [2020-10-14 00:56:37,658 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-14 00:56:37,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7865 states. [2020-10-14 00:56:37,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7865 to 7841. [2020-10-14 00:56:37,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7841 states. [2020-10-14 00:56:37,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7841 states to 7841 states and 9382 transitions. [2020-10-14 00:56:37,847 INFO L78 Accepts]: Start accepts. Automaton has 7841 states and 9382 transitions. Word has length 232 [2020-10-14 00:56:37,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:56:37,848 INFO L479 AbstractCegarLoop]: Abstraction has 7841 states and 9382 transitions. [2020-10-14 00:56:37,848 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 00:56:37,848 INFO L276 IsEmpty]: Start isEmpty. Operand 7841 states and 9382 transitions. [2020-10-14 00:56:37,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2020-10-14 00:56:37,869 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:56:37,870 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:56:37,870 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 00:56:37,870 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:56:37,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:56:37,871 INFO L82 PathProgramCache]: Analyzing trace with hash 1509235015, now seen corresponding path program 1 times [2020-10-14 00:56:37,871 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:56:37,871 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1859112434] [2020-10-14 00:56:37,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:56:37,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:56:37,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:38,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:38,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:38,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:42,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:56:42,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 260 [2020-10-14 00:56:42,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 00:56:42,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-14 00:56:42,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:56:42,933 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:56:42,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:56:42,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-10-14 00:56:42,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-14 00:56:42,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:56:43,167 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:56:43,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:56:43,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:56:43,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:43,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:56:43,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:56:43,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:56:43,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 00:56:43,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:56:43,182 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:56:43,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:56:43,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:56:43,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:56:43,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:56:43,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:56:43,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:56:43,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:43,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:56:43,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 00:56:43,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:56:43,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 00:56:43,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:56:43,267 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:56:43,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:56:43,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:56:43,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:56:43,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:56:43,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 00:56:43,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:56:43,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:43,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:56:43,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 00:56:43,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:56:43,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 00:56:43,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:56:43,287 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:56:43,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:56:43,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:56:43,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:56:43,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:56:43,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-14 00:56:43,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:56:43,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:43,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:56:43,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 00:56:43,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:56:43,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 00:56:43,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:56:43,315 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:56:43,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:56:43,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:56:43,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 00:56:43,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:56:43,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-14 00:56:43,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:56:43,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:43,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:56:43,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-14 00:56:43,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:56:43,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-14 00:56:43,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:56:43,442 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:56:43,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:56:43,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:56:43,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-14 00:56:43,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:56:43,597 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 119 proven. 2 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-10-14 00:56:43,598 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1859112434] [2020-10-14 00:56:43,598 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:56:43,598 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 00:56:43,598 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953629935] [2020-10-14 00:56:43,599 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 00:56:43,599 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:56:43,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 00:56:43,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:56:43,600 INFO L87 Difference]: Start difference. First operand 7841 states and 9382 transitions. Second operand 7 states. [2020-10-14 00:56:43,818 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 00:56:44,751 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-14 00:56:48,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:56:48,443 INFO L93 Difference]: Finished difference Result 19189 states and 24266 transitions. [2020-10-14 00:56:48,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 00:56:48,443 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 244 [2020-10-14 00:56:48,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:56:48,485 INFO L225 Difference]: With dead ends: 19189 [2020-10-14 00:56:48,485 INFO L226 Difference]: Without dead ends: 11354 [2020-10-14 00:56:48,503 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 00:56:48,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11354 states. [2020-10-14 00:56:48,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11354 to 11130. [2020-10-14 00:56:48,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11130 states. [2020-10-14 00:56:48,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11130 states to 11130 states and 13258 transitions. [2020-10-14 00:56:48,786 INFO L78 Accepts]: Start accepts. Automaton has 11130 states and 13258 transitions. Word has length 244 [2020-10-14 00:56:48,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:56:48,786 INFO L479 AbstractCegarLoop]: Abstraction has 11130 states and 13258 transitions. [2020-10-14 00:56:48,786 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 00:56:48,787 INFO L276 IsEmpty]: Start isEmpty. Operand 11130 states and 13258 transitions. [2020-10-14 00:56:48,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2020-10-14 00:56:48,821 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:56:48,821 INFO L422 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 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 00:56:48,822 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 00:56:48,822 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:56:48,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:56:48,822 INFO L82 PathProgramCache]: Analyzing trace with hash -819316583, now seen corresponding path program 1 times [2020-10-14 00:56:48,823 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:56:48,823 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1353439702] [2020-10-14 00:56:48,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:56:48,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:56:49,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:49,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:49,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:49,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:54,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:56:54,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 297 [2020-10-14 00:56:54,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 00:56:54,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-14 00:56:54,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:56:54,005 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:56:54,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:56:54,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-14 00:56:54,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-14 00:56:54,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:56:54,154 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:56:54,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:56:54,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:56:54,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:54,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:56:54,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:56:54,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:56:54,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 00:56:54,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:56:54,164 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:56:54,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:56:54,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:56:54,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:56:54,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:56:54,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:56:54,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:56:54,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:54,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:56:54,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 00:56:54,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:56:54,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 00:56:54,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:56:54,255 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:56:54,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:56:54,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:56:54,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:56:54,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:56:54,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 00:56:54,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:56:54,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:54,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:56:54,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-14 00:56:54,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:56:54,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-10-14 00:56:54,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:56:54,416 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:56:54,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:56:54,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:56:54,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-14 00:56:54,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:56:54,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-14 00:56:54,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:56:54,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:54,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:56:54,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-14 00:56:54,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:56:54,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-14 00:56:54,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:56:54,607 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:56:54,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:56:54,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-14 00:56:54,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:56:54,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:56:54,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-14 00:56:54,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:56:54,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:54,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:56:54,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-14 00:56:54,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:56:54,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-14 00:56:54,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:56:54,693 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:56:54,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:56:54,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-14 00:56:54,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:56:54,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:56:54,978 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 134 proven. 68 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-10-14 00:56:54,979 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1353439702] [2020-10-14 00:56:54,980 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:56:54,980 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 00:56:54,980 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488545683] [2020-10-14 00:56:54,981 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 00:56:54,981 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:56:54,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 00:56:54,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:56:54,982 INFO L87 Difference]: Start difference. First operand 11130 states and 13258 transitions. Second operand 7 states. [2020-10-14 00:56:55,280 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-14 00:56:56,138 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-14 00:56:58,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:56:58,419 INFO L93 Difference]: Finished difference Result 25887 states and 32594 transitions. [2020-10-14 00:56:58,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 00:56:58,420 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 281 [2020-10-14 00:56:58,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:56:58,481 INFO L225 Difference]: With dead ends: 25887 [2020-10-14 00:56:58,482 INFO L226 Difference]: Without dead ends: 15429 [2020-10-14 00:56:58,508 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-14 00:56:58,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15429 states. [2020-10-14 00:56:58,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15429 to 15097. [2020-10-14 00:56:58,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15097 states. [2020-10-14 00:56:58,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15097 states to 15097 states and 17820 transitions. [2020-10-14 00:56:58,921 INFO L78 Accepts]: Start accepts. Automaton has 15097 states and 17820 transitions. Word has length 281 [2020-10-14 00:56:58,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:56:58,922 INFO L479 AbstractCegarLoop]: Abstraction has 15097 states and 17820 transitions. [2020-10-14 00:56:58,922 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 00:56:58,922 INFO L276 IsEmpty]: Start isEmpty. Operand 15097 states and 17820 transitions. [2020-10-14 00:56:58,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2020-10-14 00:56:58,962 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:56:58,962 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 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, 3, 3, 3, 3, 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] [2020-10-14 00:56:58,963 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 00:56:58,963 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:56:58,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:56:58,963 INFO L82 PathProgramCache]: Analyzing trace with hash -882488715, now seen corresponding path program 1 times [2020-10-14 00:56:58,964 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:56:58,964 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1879067637] [2020-10-14 00:56:58,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:56:59,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:56:59,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:59,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:59,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:59,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:57:00,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:57:04,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:57:04,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 315 [2020-10-14 00:57:04,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 00:57:04,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-14 00:57:04,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:57:04,196 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:57:04,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:57:04,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 87 [2020-10-14 00:57:04,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-14 00:57:04,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:57:04,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:57:04,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:57:04,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:57:04,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:57:04,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:57:04,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:57:04,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 00:57:04,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:57:04,376 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:57:04,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:57:04,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:57:04,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:57:04,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:57:04,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:57:04,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:57:04,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:57:04,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:57:04,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 00:57:04,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:57:04,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 00:57:04,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:57:04,469 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:57:04,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:57:04,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:57:04,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:57:04,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:57:04,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 00:57:04,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:57:04,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:57:04,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:57:04,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 00:57:04,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:57:04,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 00:57:04,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:57:04,489 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:57:04,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:57:04,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:57:04,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:57:04,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:57:04,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-14 00:57:04,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:57:04,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:57:04,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:57:04,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-14 00:57:04,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:57:04,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-14 00:57:04,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:57:04,567 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:57:04,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:57:04,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:57:04,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-14 00:57:04,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:57:04,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-14 00:57:04,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:57:04,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:57:04,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:57:04,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-14 00:57:04,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:57:04,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-14 00:57:04,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:57:04,647 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:57:04,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:57:04,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:57:04,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-14 00:57:04,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:57:04,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-14 00:57:04,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:57:04,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:57:04,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:57:04,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-14 00:57:04,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:57:04,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-14 00:57:04,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:57:04,719 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:57:04,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:57:04,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-14 00:57:04,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:57:04,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:57:04,949 INFO L134 CoverageAnalysis]: Checked inductivity of 332 backedges. 209 proven. 33 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2020-10-14 00:57:04,949 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1879067637] [2020-10-14 00:57:04,950 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:57:04,950 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 00:57:04,950 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694100475] [2020-10-14 00:57:04,951 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 00:57:04,951 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:57:04,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 00:57:04,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:57:04,954 INFO L87 Difference]: Start difference. First operand 15097 states and 17820 transitions. Second operand 7 states. [2020-10-14 00:57:05,174 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:57:05,534 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 00:57:09,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:57:09,573 INFO L93 Difference]: Finished difference Result 46159 states and 58213 transitions. [2020-10-14 00:57:09,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 00:57:09,573 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 297 [2020-10-14 00:57:09,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:57:09,682 INFO L225 Difference]: With dead ends: 46159 [2020-10-14 00:57:09,682 INFO L226 Difference]: Without dead ends: 31745 [2020-10-14 00:57:09,721 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 00:57:09,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31745 states. [2020-10-14 00:57:10,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31745 to 30248. [2020-10-14 00:57:10,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30248 states. [2020-10-14 00:57:10,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30248 states to 30248 states and 35178 transitions. [2020-10-14 00:57:10,431 INFO L78 Accepts]: Start accepts. Automaton has 30248 states and 35178 transitions. Word has length 297 [2020-10-14 00:57:10,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:57:10,432 INFO L479 AbstractCegarLoop]: Abstraction has 30248 states and 35178 transitions. [2020-10-14 00:57:10,432 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 00:57:10,432 INFO L276 IsEmpty]: Start isEmpty. Operand 30248 states and 35178 transitions. [2020-10-14 00:57:10,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2020-10-14 00:57:10,464 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:57:10,465 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 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, 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] [2020-10-14 00:57:10,465 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 00:57:10,465 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:57:10,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:57:10,466 INFO L82 PathProgramCache]: Analyzing trace with hash 1450136662, now seen corresponding path program 1 times [2020-10-14 00:57:10,466 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:57:10,466 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [38649296] [2020-10-14 00:57:10,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:57:10,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:57:10,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:57:10,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:57:10,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:57:11,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:57:11,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:57:12,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:57:15,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:57:15,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 358 [2020-10-14 00:57:15,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 00:57:15,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5048 [2020-10-14 00:57:15,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:57:15,732 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:57:15,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:57:15,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 74 [2020-10-14 00:57:15,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 00:57:15,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:57:15,885 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:57:15,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:57:15,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:57:15,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:57:15,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:57:15,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:57:15,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:57:15,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 00:57:15,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:57:15,894 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:57:15,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:57:15,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:57:15,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:57:15,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:57:15,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:57:15,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:57:15,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:57:16,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:57:16,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-14 00:57:16,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:57:16,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-14 00:57:16,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:57:16,042 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:57:16,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:57:16,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:57:16,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-14 00:57:16,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:57:16,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-14 00:57:16,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:57:16,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:57:16,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:57:16,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 00:57:16,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:57:16,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-14 00:57:16,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:57:16,145 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:57:16,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:57:16,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:57:16,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 00:57:16,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:57:16,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-10-14 00:57:16,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:57:16,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:57:16,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:57:16,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 00:57:16,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:57:16,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 00:57:16,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:57:16,184 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:57:16,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:57:16,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-14 00:57:16,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:57:16,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:57:16,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-10-14 00:57:16,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:57:16,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:57:16,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:57:16,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 00:57:16,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:57:16,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 00:57:16,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:57:16,196 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:57:16,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:57:16,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-14 00:57:16,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:57:16,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:57:16,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-10-14 00:57:16,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:57:16,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:57:16,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:57:16,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-14 00:57:16,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:57:16,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-14 00:57:16,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:57:16,271 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:57:16,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:57:16,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-14 00:57:16,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:57:16,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:57:16,372 INFO L134 CoverageAnalysis]: Checked inductivity of 339 backedges. 200 proven. 33 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2020-10-14 00:57:16,372 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [38649296] [2020-10-14 00:57:16,372 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:57:16,372 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 00:57:16,373 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011013051] [2020-10-14 00:57:16,373 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 00:57:16,374 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:57:16,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 00:57:16,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:57:16,374 INFO L87 Difference]: Start difference. First operand 30248 states and 35178 transitions. Second operand 7 states. [2020-10-14 00:57:16,603 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-14 00:57:17,793 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:57:20,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:57:20,959 INFO L93 Difference]: Finished difference Result 58408 states and 70968 transitions. [2020-10-14 00:57:20,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 00:57:20,959 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 340 [2020-10-14 00:57:20,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:57:21,076 INFO L225 Difference]: With dead ends: 58408 [2020-10-14 00:57:21,077 INFO L226 Difference]: Without dead ends: 33839 [2020-10-14 00:57:21,131 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 00:57:21,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33839 states. [2020-10-14 00:57:21,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33839 to 30691. [2020-10-14 00:57:21,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30691 states. [2020-10-14 00:57:21,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30691 states to 30691 states and 34522 transitions. [2020-10-14 00:57:21,886 INFO L78 Accepts]: Start accepts. Automaton has 30691 states and 34522 transitions. Word has length 340 [2020-10-14 00:57:21,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:57:21,887 INFO L479 AbstractCegarLoop]: Abstraction has 30691 states and 34522 transitions. [2020-10-14 00:57:21,887 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 00:57:21,887 INFO L276 IsEmpty]: Start isEmpty. Operand 30691 states and 34522 transitions. [2020-10-14 00:57:21,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 362 [2020-10-14 00:57:21,927 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:57:21,928 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:57:21,928 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 00:57:21,928 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:57:21,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:57:21,929 INFO L82 PathProgramCache]: Analyzing trace with hash 1908707535, now seen corresponding path program 1 times [2020-10-14 00:57:21,929 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:57:21,929 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1605511696] [2020-10-14 00:57:21,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:57:22,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:57:22,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:57:22,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:57:22,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:57:23,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:57:23,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:57:26,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:57:27,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:57:27,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 379 [2020-10-14 00:57:27,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 00:57:27,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-14 00:57:27,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:57:27,003 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:57:27,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:57:27,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-14 00:57:27,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-14 00:57:27,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:57:27,183 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:57:27,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:57:27,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:57:27,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:57:27,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:57:27,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:57:27,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:57:27,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 00:57:27,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:57:27,192 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:57:27,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:57:27,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:57:27,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:57:27,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:57:27,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:57:27,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:57:27,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:57:27,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:57:27,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-14 00:57:27,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:57:27,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-14 00:57:27,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:57:27,308 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:57:27,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:57:27,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:57:27,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-14 00:57:27,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:57:27,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-14 00:57:27,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:57:27,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:57:27,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:57:27,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-14 00:57:27,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:57:27,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-10-14 00:57:27,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:57:27,529 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:57:27,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:57:27,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:57:27,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-14 00:57:27,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:57:27,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-14 00:57:27,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:57:27,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:57:27,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:57:27,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 00:57:27,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:57:27,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 00:57:27,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:57:27,619 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:57:27,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:57:27,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-14 00:57:27,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:57:27,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:57:27,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-14 00:57:27,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:57:27,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:57:27,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:57:27,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 00:57:27,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:57:27,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 00:57:27,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:57:27,631 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:57:27,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:57:27,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-14 00:57:27,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:57:27,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:57:27,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-14 00:57:27,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:57:27,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:57:27,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:57:27,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-14 00:57:27,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:57:27,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-14 00:57:27,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:57:27,702 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:57:27,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:57:27,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-14 00:57:27,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:57:27,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:57:27,876 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 231 proven. 86 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2020-10-14 00:57:27,876 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1605511696] [2020-10-14 00:57:27,876 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:57:27,876 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 00:57:27,877 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626570857] [2020-10-14 00:57:27,877 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 00:57:27,877 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:57:27,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 00:57:27,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 00:57:27,878 INFO L87 Difference]: Start difference. First operand 30691 states and 34522 transitions. Second operand 8 states. [2020-10-14 00:57:28,251 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-10-14 00:57:29,263 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-14 00:57:31,174 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-14 00:57:32,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:57:32,160 INFO L93 Difference]: Finished difference Result 57858 states and 65107 transitions. [2020-10-14 00:57:32,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 00:57:32,161 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 361 [2020-10-14 00:57:32,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:57:32,247 INFO L225 Difference]: With dead ends: 57858 [2020-10-14 00:57:32,247 INFO L226 Difference]: Without dead ends: 34123 [2020-10-14 00:57:32,286 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-10-14 00:57:32,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34123 states. [2020-10-14 00:57:33,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34123 to 33844. [2020-10-14 00:57:33,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33844 states. [2020-10-14 00:57:33,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33844 states to 33844 states and 37948 transitions. [2020-10-14 00:57:33,085 INFO L78 Accepts]: Start accepts. Automaton has 33844 states and 37948 transitions. Word has length 361 [2020-10-14 00:57:33,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:57:33,086 INFO L479 AbstractCegarLoop]: Abstraction has 33844 states and 37948 transitions. [2020-10-14 00:57:33,086 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 00:57:33,086 INFO L276 IsEmpty]: Start isEmpty. Operand 33844 states and 37948 transitions. [2020-10-14 00:57:33,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2020-10-14 00:57:33,128 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:57:33,129 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:57:33,129 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 00:57:33,129 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:57:33,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:57:33,129 INFO L82 PathProgramCache]: Analyzing trace with hash 2005927491, now seen corresponding path program 1 times [2020-10-14 00:57:33,130 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:57:33,130 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1785123671] [2020-10-14 00:57:33,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:57:33,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:57:33,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:57:33,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:57:33,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:57:34,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:57:38,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:57:38,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 371 [2020-10-14 00:57:38,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 00:57:38,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5041 [2020-10-14 00:57:38,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:57:38,243 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:57:38,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:57:38,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 135 [2020-10-14 00:57:38,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-14 00:57:38,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:57:38,418 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:57:38,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:57:38,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:57:38,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:57:38,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:57:38,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:57:38,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:57:38,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 00:57:38,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:57:38,428 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:57:38,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:57:38,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:57:38,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:57:38,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:57:38,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:57:38,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:57:38,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:57:38,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:57:38,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-14 00:57:38,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:57:38,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-14 00:57:38,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:57:38,644 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:57:38,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:57:38,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:57:38,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-10-14 00:57:38,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:57:38,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-14 00:57:38,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:57:38,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:57:38,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:57:38,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-14 00:57:38,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:57:38,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-14 00:57:38,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:57:38,827 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:57:38,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:57:38,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:57:38,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 00:57:38,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:57:38,979 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 276 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 00:57:38,979 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1785123671] [2020-10-14 00:57:38,979 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:57:38,979 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 00:57:38,979 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608399240] [2020-10-14 00:57:38,980 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 00:57:38,980 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:57:38,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 00:57:38,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:57:38,981 INFO L87 Difference]: Start difference. First operand 33844 states and 37948 transitions. Second operand 7 states. [2020-10-14 00:57:39,201 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-14 00:57:40,237 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-14 00:57:43,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:57:43,166 INFO L93 Difference]: Finished difference Result 71006 states and 82389 transitions. [2020-10-14 00:57:43,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 00:57:43,167 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 359 [2020-10-14 00:57:43,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:57:43,243 INFO L225 Difference]: With dead ends: 71006 [2020-10-14 00:57:43,243 INFO L226 Difference]: Without dead ends: 37846 [2020-10-14 00:57:43,282 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 00:57:43,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37846 states. [2020-10-14 00:57:43,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37846 to 36699. [2020-10-14 00:57:43,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36699 states. [2020-10-14 00:57:44,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36699 states to 36699 states and 40965 transitions. [2020-10-14 00:57:44,026 INFO L78 Accepts]: Start accepts. Automaton has 36699 states and 40965 transitions. Word has length 359 [2020-10-14 00:57:44,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:57:44,026 INFO L479 AbstractCegarLoop]: Abstraction has 36699 states and 40965 transitions. [2020-10-14 00:57:44,027 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 00:57:44,027 INFO L276 IsEmpty]: Start isEmpty. Operand 36699 states and 40965 transitions. [2020-10-14 00:57:44,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2020-10-14 00:57:44,057 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:57:44,057 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:57:44,057 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 00:57:44,058 INFO L427 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:57:44,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:57:44,058 INFO L82 PathProgramCache]: Analyzing trace with hash -599590318, now seen corresponding path program 1 times [2020-10-14 00:57:44,058 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:57:44,058 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1431796373] [2020-10-14 00:57:44,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:57:44,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:57:44,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:57:44,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:57:47,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:57:49,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:57:49,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 376 [2020-10-14 00:57:49,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 00:57:49,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5173 [2020-10-14 00:57:49,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:57:49,300 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:57:49,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 00:57:49,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-14 00:57:49,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 183 [2020-10-14 00:57:49,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:57:49,497 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:57:49,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:57:49,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:57:49,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:57:49,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:57:49,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:57:49,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:57:49,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 00:57:49,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:57:49,507 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:57:49,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:57:49,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:57:49,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:57:49,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:57:49,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:57:49,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:57:49,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:57:49,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:57:49,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-14 00:57:49,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:57:49,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-14 00:57:49,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:57:49,623 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:57:49,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:57:49,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:57:49,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-14 00:57:49,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:57:49,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-14 00:57:49,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:57:49,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:57:49,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:57:49,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-14 00:57:49,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:57:49,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 186 [2020-10-14 00:57:49,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:57:49,846 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:57:49,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 00:57:49,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:57:49,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-14 00:57:49,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:57:49,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-10-14 00:57:49,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:57:49,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:57:50,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:57:50,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-14 00:57:50,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:57:50,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-10-14 00:57:50,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:57:50,076 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:57:50,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:57:50,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:57:50,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 00:57:50,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:57:50,392 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 263 proven. 79 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 00:57:50,392 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1431796373] [2020-10-14 00:57:50,392 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:57:50,393 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 00:57:50,393 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599774317] [2020-10-14 00:57:50,393 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 00:57:50,394 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:57:50,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 00:57:50,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-10-14 00:57:50,394 INFO L87 Difference]: Start difference. First operand 36699 states and 40965 transitions. Second operand 10 states. [2020-10-14 00:57:50,542 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2020-10-14 00:57:50,973 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 00:57:52,734 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 133 [2020-10-14 00:57:53,608 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:57:54,339 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-14 00:57:56,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:57:56,874 INFO L93 Difference]: Finished difference Result 96725 states and 114565 transitions. [2020-10-14 00:57:56,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-14 00:57:56,875 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 362 [2020-10-14 00:57:56,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:57:57,026 INFO L225 Difference]: With dead ends: 96725 [2020-10-14 00:57:57,026 INFO L226 Difference]: Without dead ends: 61366 [2020-10-14 00:57:57,063 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=186, Invalid=516, Unknown=0, NotChecked=0, Total=702 [2020-10-14 00:57:57,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61366 states. [2020-10-14 00:57:58,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61366 to 59420. [2020-10-14 00:57:58,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59420 states. [2020-10-14 00:57:58,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59420 states to 59420 states and 66285 transitions. [2020-10-14 00:57:58,119 INFO L78 Accepts]: Start accepts. Automaton has 59420 states and 66285 transitions. Word has length 362 [2020-10-14 00:57:58,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:57:58,120 INFO L479 AbstractCegarLoop]: Abstraction has 59420 states and 66285 transitions. [2020-10-14 00:57:58,120 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 00:57:58,120 INFO L276 IsEmpty]: Start isEmpty. Operand 59420 states and 66285 transitions. [2020-10-14 00:57:58,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 376 [2020-10-14 00:57:58,164 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:57:58,164 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:57:58,164 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 00:57:58,164 INFO L427 AbstractCegarLoop]: === Iteration 17 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:57:58,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:57:58,165 INFO L82 PathProgramCache]: Analyzing trace with hash -760042675, now seen corresponding path program 1 times [2020-10-14 00:57:58,165 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:57:58,165 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1685410072] [2020-10-14 00:57:58,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:57:58,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:57:58,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:57:58,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:58:01,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:58:03,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:58:03,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 391 [2020-10-14 00:58:03,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 00:58:03,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5066 [2020-10-14 00:58:03,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:58:03,280 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:58:03,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 00:58:03,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 203 [2020-10-14 00:58:03,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 187 [2020-10-14 00:58:03,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:58:03,488 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:58:03,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:58:03,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:58:03,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:58:03,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:58:03,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:58:03,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:58:03,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 00:58:03,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:58:03,498 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:58:03,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:58:03,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:58:03,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:58:03,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:58:03,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:58:03,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:58:03,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:58:03,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:58:03,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-14 00:58:03,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:58:03,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 00:58:03,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:58:03,588 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:58:03,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:58:03,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:58:03,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:58:03,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:58:03,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-14 00:58:03,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:58:03,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:58:03,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:58:03,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-14 00:58:03,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:58:03,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-14 00:58:03,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:58:03,618 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:58:03,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:58:03,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:58:03,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:58:03,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:58:03,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-14 00:58:03,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:58:03,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:58:03,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:58:03,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-14 00:58:03,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:58:03,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-14 00:58:03,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:58:03,778 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:58:03,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:58:03,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:58:03,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-14 00:58:03,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:58:03,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-10-14 00:58:03,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:58:03,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:58:03,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:58:03,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-14 00:58:03,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:58:03,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-14 00:58:03,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:58:03,890 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:58:03,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 00:58:03,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:58:03,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-14 00:58:03,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:58:04,014 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 277 proven. 37 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2020-10-14 00:58:04,014 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1685410072] [2020-10-14 00:58:04,015 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:58:04,015 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 00:58:04,015 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536602670] [2020-10-14 00:58:04,015 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 00:58:04,016 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:58:04,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 00:58:04,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 00:58:04,016 INFO L87 Difference]: Start difference. First operand 59420 states and 66285 transitions. Second operand 8 states. [2020-10-14 00:58:04,148 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:58:04,470 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 00:58:05,417 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:58:09,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:58:09,155 INFO L93 Difference]: Finished difference Result 158746 states and 180946 transitions. [2020-10-14 00:58:09,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 00:58:09,155 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 375 [2020-10-14 00:58:09,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:58:09,375 INFO L225 Difference]: With dead ends: 158746 [2020-10-14 00:58:09,375 INFO L226 Difference]: Without dead ends: 102344 [2020-10-14 00:58:09,446 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2020-10-14 00:58:09,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102344 states. [2020-10-14 00:58:11,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102344 to 97680. [2020-10-14 00:58:11,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97680 states. [2020-10-14 00:58:11,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97680 states to 97680 states and 108993 transitions. [2020-10-14 00:58:11,353 INFO L78 Accepts]: Start accepts. Automaton has 97680 states and 108993 transitions. Word has length 375 [2020-10-14 00:58:11,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:58:11,354 INFO L479 AbstractCegarLoop]: Abstraction has 97680 states and 108993 transitions. [2020-10-14 00:58:11,354 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 00:58:11,355 INFO L276 IsEmpty]: Start isEmpty. Operand 97680 states and 108993 transitions. [2020-10-14 00:58:11,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 392 [2020-10-14 00:58:11,423 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:58:11,424 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:58:11,424 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-14 00:58:11,424 INFO L427 AbstractCegarLoop]: === Iteration 18 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:58:11,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:58:11,424 INFO L82 PathProgramCache]: Analyzing trace with hash -593710046, now seen corresponding path program 1 times [2020-10-14 00:58:11,424 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:58:11,425 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1586268523] [2020-10-14 00:58:11,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:58:11,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:58:11,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:58:13,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:58:16,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:58:16,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 405 [2020-10-14 00:58:16,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:58:16,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-14 00:58:16,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:58:16,524 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:58:16,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:58:16,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 142 [2020-10-14 00:58:16,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-14 00:58:16,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:58:16,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:58:16,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:58:16,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:58:16,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:58:16,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:58:16,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:58:16,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 00:58:16,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:58:16,735 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:58:16,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:58:16,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:58:16,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:58:16,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:58:16,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:58:16,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:58:16,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:58:16,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:58:16,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-14 00:58:16,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:58:16,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 00:58:16,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:58:16,825 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:58:16,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:58:16,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:58:16,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:58:16,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:58:16,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-14 00:58:16,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:58:16,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:58:16,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:58:16,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-14 00:58:16,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:58:16,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-14 00:58:16,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:58:16,956 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:58:16,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:58:16,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:58:16,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-14 00:58:16,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:58:16,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-10-14 00:58:17,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:58:17,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:58:17,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:58:17,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-14 00:58:17,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:58:17,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 204 [2020-10-14 00:58:17,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:58:17,235 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:58:17,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:58:17,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:58:17,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-14 00:58:17,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:58:17,435 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 359 proven. 2 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2020-10-14 00:58:17,436 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1586268523] [2020-10-14 00:58:17,436 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:58:17,436 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 00:58:17,436 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915653887] [2020-10-14 00:58:17,436 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 00:58:17,437 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:58:17,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 00:58:17,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:58:17,437 INFO L87 Difference]: Start difference. First operand 97680 states and 108993 transitions. Second operand 7 states. [2020-10-14 00:58:17,569 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2020-10-14 00:58:19,311 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:58:20,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:58:20,774 INFO L93 Difference]: Finished difference Result 209951 states and 235315 transitions. [2020-10-14 00:58:20,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 00:58:20,775 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 391 [2020-10-14 00:58:20,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:58:21,003 INFO L225 Difference]: With dead ends: 209951 [2020-10-14 00:58:21,003 INFO L226 Difference]: Without dead ends: 124033 [2020-10-14 00:58:21,090 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-10-14 00:58:21,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124033 states. [2020-10-14 00:58:25,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124033 to 116160. [2020-10-14 00:58:25,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116160 states. [2020-10-14 00:58:26,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116160 states to 116160 states and 129920 transitions. [2020-10-14 00:58:26,080 INFO L78 Accepts]: Start accepts. Automaton has 116160 states and 129920 transitions. Word has length 391 [2020-10-14 00:58:26,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:58:26,080 INFO L479 AbstractCegarLoop]: Abstraction has 116160 states and 129920 transitions. [2020-10-14 00:58:26,080 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 00:58:26,080 INFO L276 IsEmpty]: Start isEmpty. Operand 116160 states and 129920 transitions. [2020-10-14 00:58:26,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 396 [2020-10-14 00:58:26,157 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:58:26,158 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2020-10-14 00:58:26,158 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-14 00:58:26,158 INFO L427 AbstractCegarLoop]: === Iteration 19 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:58:26,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:58:26,158 INFO L82 PathProgramCache]: Analyzing trace with hash -815030150, now seen corresponding path program 1 times [2020-10-14 00:58:26,159 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:58:26,159 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [638388031] [2020-10-14 00:58:26,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:58:26,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:58:26,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:58:26,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:58:26,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:58:26,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:58:26,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:58:28,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:58:28,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:58:29,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:58:29,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:58:29,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:58:31,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:58:31,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 415 [2020-10-14 00:58:31,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-14 00:58:31,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-14 00:58:31,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:58:31,215 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:58:31,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:58:31,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 00:58:31,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-14 00:58:31,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:58:31,381 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:58:31,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:58:31,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:58:31,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:58:31,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:58:31,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:58:31,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:58:31,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 00:58:31,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:58:31,395 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:58:31,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:58:31,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:58:31,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 00:58:31,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:58:31,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:58:31,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:58:31,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:58:31,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:58:31,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:58:31,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-14 00:58:31,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:58:31,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-14 00:58:31,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:58:31,530 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:58:31,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:58:31,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:58:31,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-14 00:58:31,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:58:31,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-14 00:58:31,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:58:31,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:58:31,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:58:31,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:58:31,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-14 00:58:31,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:58:31,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 00:58:31,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:58:31,566 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:58:31,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:58:31,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:58:31,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 00:58:31,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:58:31,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-14 00:58:31,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:58:31,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:58:31,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:58:31,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:58:31,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-14 00:58:31,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:58:31,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-10-14 00:58:31,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:58:31,717 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:58:31,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:58:31,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:58:31,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-14 00:58:31,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:58:31,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-14 00:58:31,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:58:31,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:58:31,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:58:31,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:58:31,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 00:58:31,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:58:31,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 00:58:31,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:58:31,753 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:58:31,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:58:31,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-14 00:58:31,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 00:58:31,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:58:31,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-10-14 00:58:31,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:58:31,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:58:31,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:58:31,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-14 00:58:31,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:58:31,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 00:58:31,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:58:31,794 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:58:31,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:58:31,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-14 00:58:31,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:58:31,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:58:31,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2020-10-14 00:58:31,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:58:31,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:58:31,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:58:31,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-14 00:58:31,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:58:31,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-14 00:58:31,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:58:31,868 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:58:31,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:58:31,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-14 00:58:31,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:58:31,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:58:31,995 INFO L134 CoverageAnalysis]: Checked inductivity of 546 backedges. 254 proven. 4 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2020-10-14 00:58:31,996 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [638388031] [2020-10-14 00:58:31,996 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:58:31,996 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 00:58:31,996 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984245149] [2020-10-14 00:58:31,997 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 00:58:31,997 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:58:31,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 00:58:31,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-14 00:58:31,997 INFO L87 Difference]: Start difference. First operand 116160 states and 129920 transitions. Second operand 6 states. [2020-10-14 00:58:32,129 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:58:34,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:58:34,317 INFO L93 Difference]: Finished difference Result 217367 states and 243369 transitions. [2020-10-14 00:58:34,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 00:58:34,318 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 395 [2020-10-14 00:58:34,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:58:35,062 INFO L225 Difference]: With dead ends: 217367 [2020-10-14 00:58:35,062 INFO L226 Difference]: Without dead ends: 116313 [2020-10-14 00:58:35,139 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:58:35,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116313 states. [2020-10-14 00:58:36,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116313 to 116145. [2020-10-14 00:58:36,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116145 states. [2020-10-14 00:58:36,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116145 states to 116145 states and 129888 transitions. [2020-10-14 00:58:36,801 INFO L78 Accepts]: Start accepts. Automaton has 116145 states and 129888 transitions. Word has length 395 [2020-10-14 00:58:36,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:58:36,801 INFO L479 AbstractCegarLoop]: Abstraction has 116145 states and 129888 transitions. [2020-10-14 00:58:36,801 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 00:58:36,801 INFO L276 IsEmpty]: Start isEmpty. Operand 116145 states and 129888 transitions. [2020-10-14 00:58:36,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 398 [2020-10-14 00:58:36,878 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:58:36,878 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:58:36,878 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-14 00:58:36,878 INFO L427 AbstractCegarLoop]: === Iteration 20 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:58:36,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:58:36,879 INFO L82 PathProgramCache]: Analyzing trace with hash -633827852, now seen corresponding path program 1 times [2020-10-14 00:58:36,879 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:58:36,879 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1765525438] [2020-10-14 00:58:36,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:58:36,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:58:36,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:58:37,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:58:37,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:58:39,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:58:39,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:58:41,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:58:42,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:58:42,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 411 [2020-10-14 00:58:42,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 00:58:42,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5316 [2020-10-14 00:58:42,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:58:42,266 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:58:42,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:58:42,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 177 [2020-10-14 00:58:42,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-14 00:58:42,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:58:42,438 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:58:42,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:58:42,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:58:42,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:58:42,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:58:42,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:58:42,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:58:42,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 00:58:42,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:58:42,447 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:58:42,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:58:42,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:58:42,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:58:42,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:58:42,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:58:42,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:58:42,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:58:42,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:58:42,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-14 00:58:42,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:58:42,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-14 00:58:42,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:58:42,571 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:58:42,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:58:42,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:58:42,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:58:42,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:58:42,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-14 00:58:42,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:58:42,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:58:42,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:58:42,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-14 00:58:42,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:58:42,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-14 00:58:42,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:58:42,660 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:58:42,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:58:42,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:58:42,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-14 00:58:42,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:58:42,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-10-14 00:58:42,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:58:42,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:58:42,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:58:42,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-14 00:58:42,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:58:42,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-14 00:58:42,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:58:42,818 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:58:42,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:58:42,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:58:42,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 00:58:42,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:58:42,980 INFO L134 CoverageAnalysis]: Checked inductivity of 390 backedges. 351 proven. 2 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2020-10-14 00:58:42,980 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1765525438] [2020-10-14 00:58:42,981 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:58:42,981 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 00:58:42,981 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6004922] [2020-10-14 00:58:42,981 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 00:58:42,981 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:58:42,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 00:58:42,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:58:42,982 INFO L87 Difference]: Start difference. First operand 116145 states and 129888 transitions. Second operand 7 states. [2020-10-14 00:58:43,376 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-14 00:58:44,425 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-14 00:58:49,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:58:49,661 INFO L93 Difference]: Finished difference Result 255141 states and 292174 transitions. [2020-10-14 00:58:49,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 00:58:49,662 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 397 [2020-10-14 00:58:49,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:58:50,027 INFO L225 Difference]: With dead ends: 255141 [2020-10-14 00:58:50,027 INFO L226 Difference]: Without dead ends: 142221 [2020-10-14 00:58:50,148 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 00:58:50,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142221 states. [2020-10-14 00:58:52,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142221 to 134999. [2020-10-14 00:58:52,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134999 states. [2020-10-14 00:58:53,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134999 states to 134999 states and 149836 transitions. [2020-10-14 00:58:53,047 INFO L78 Accepts]: Start accepts. Automaton has 134999 states and 149836 transitions. Word has length 397 [2020-10-14 00:58:53,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:58:53,047 INFO L479 AbstractCegarLoop]: Abstraction has 134999 states and 149836 transitions. [2020-10-14 00:58:53,047 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 00:58:53,047 INFO L276 IsEmpty]: Start isEmpty. Operand 134999 states and 149836 transitions. [2020-10-14 00:58:53,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 402 [2020-10-14 00:58:53,130 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:58:53,130 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2020-10-14 00:58:53,130 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-14 00:58:53,130 INFO L427 AbstractCegarLoop]: === Iteration 21 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:58:53,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:58:53,130 INFO L82 PathProgramCache]: Analyzing trace with hash 1007140584, now seen corresponding path program 1 times [2020-10-14 00:58:53,131 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:58:53,131 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [316341027] [2020-10-14 00:58:53,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:58:53,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:58:53,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:58:53,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:58:53,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:58:53,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:58:53,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:58:53,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking...