/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_label43.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 00:53:54,221 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 00:53:54,224 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 00:53:54,265 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 00:53:54,265 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 00:53:54,272 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 00:53:54,274 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 00:53:54,277 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 00:53:54,280 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 00:53:54,282 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 00:53:54,283 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 00:53:54,284 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 00:53:54,284 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 00:53:54,287 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 00:53:54,289 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 00:53:54,290 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 00:53:54,292 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 00:53:54,292 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 00:53:54,294 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 00:53:54,302 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 00:53:54,304 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 00:53:54,305 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 00:53:54,305 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 00:53:54,306 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 00:53:54,318 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 00:53:54,323 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 00:53:54,323 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 00:53:54,324 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 00:53:54,325 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 00:53:54,326 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 00:53:54,326 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 00:53:54,328 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 00:53:54,329 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 00:53:54,330 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 00:53:54,331 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 00:53:54,331 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 00:53:54,335 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 00:53:54,335 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 00:53:54,335 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 00:53:54,339 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 00:53:54,340 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 00:53:54,340 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 00:53:54,367 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 00:53:54,368 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 00:53:54,369 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 00:53:54,369 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 00:53:54,369 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 00:53:54,369 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 00:53:54,370 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 00:53:54,370 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 00:53:54,370 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 00:53:54,370 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 00:53:54,370 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 00:53:54,371 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 00:53:54,371 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 00:53:54,371 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 00:53:54,371 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 00:53:54,371 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 00:53:54,371 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 00:53:54,372 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 00:53:54,372 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 00:53:54,372 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 00:53:54,372 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 00:53:54,372 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 00:53:54,373 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 00:53:54,373 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 00:53:54,373 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 00:53:54,373 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 00:53:54,373 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 00:53:54,374 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 00:53:54,374 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 00:53:54,374 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 00:53:54,654 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 00:53:54,666 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 00:53:54,669 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 00:53:54,671 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 00:53:54,671 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 00:53:54,672 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label43.c [2020-10-14 00:53:54,735 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a8453aecc/6980df341d4c47568bfbacf9eb93ddd1/FLAG90f875582 [2020-10-14 00:53:55,338 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 00:53:55,339 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem03_label43.c [2020-10-14 00:53:55,355 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a8453aecc/6980df341d4c47568bfbacf9eb93ddd1/FLAG90f875582 [2020-10-14 00:53:55,508 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a8453aecc/6980df341d4c47568bfbacf9eb93ddd1 [2020-10-14 00:53:55,519 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 00:53:55,521 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 00:53:55,525 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 00:53:55,525 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 00:53:55,528 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 00:53:55,529 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 12:53:55" (1/1) ... [2020-10-14 00:53:55,533 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@532b1c07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:53:55, skipping insertion in model container [2020-10-14 00:53:55,533 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 12:53:55" (1/1) ... [2020-10-14 00:53:55,543 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 00:53:55,650 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 00:53:56,459 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 00:53:56,467 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 00:53:56,839 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 00:53:56,872 INFO L208 MainTranslator]: Completed translation [2020-10-14 00:53:56,874 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:53:56 WrapperNode [2020-10-14 00:53:56,874 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 00:53:56,875 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 00:53:56,876 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 00:53:56,876 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 00:53:56,891 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:53:56" (1/1) ... [2020-10-14 00:53:56,893 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:53:56" (1/1) ... [2020-10-14 00:53:56,941 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:53:56" (1/1) ... [2020-10-14 00:53:56,944 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:53:56" (1/1) ... [2020-10-14 00:53:57,006 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:53:56" (1/1) ... [2020-10-14 00:53:57,021 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:53:56" (1/1) ... [2020-10-14 00:53:57,037 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:53:56" (1/1) ... [2020-10-14 00:53:57,055 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 00:53:57,056 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 00:53:57,056 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 00:53:57,056 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 00:53:57,057 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:53:56" (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 00:53:57,127 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 00:53:57,127 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 00:53:57,127 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 00:53:57,127 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 00:53:57,128 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 00:53:57,128 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 00:53:57,128 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 00:53:57,129 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 00:53:57,129 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 00:53:57,129 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 00:53:57,130 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 00:53:59,093 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 00:53:59,093 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 00:53:59,100 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 12:53:59 BoogieIcfgContainer [2020-10-14 00:53:59,100 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 00:53:59,102 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 00:53:59,102 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 00:53:59,105 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 00:53:59,105 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 12:53:55" (1/3) ... [2020-10-14 00:53:59,106 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@648bc34c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 12:53:59, skipping insertion in model container [2020-10-14 00:53:59,106 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:53:56" (2/3) ... [2020-10-14 00:53:59,107 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@648bc34c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 12:53:59, skipping insertion in model container [2020-10-14 00:53:59,107 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 12:53:59" (3/3) ... [2020-10-14 00:53:59,109 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem03_label43.c [2020-10-14 00:53:59,120 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 00:53:59,128 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 00:53:59,142 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 00:53:59,170 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 00:53:59,170 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 00:53:59,170 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 00:53:59,170 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 00:53:59,170 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 00:53:59,171 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 00:53:59,171 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 00:53:59,171 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 00:53:59,198 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states. [2020-10-14 00:53:59,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-10-14 00:53:59,214 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:53:59,216 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, 1, 1, 1, 1] [2020-10-14 00:53:59,217 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:53:59,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:53:59,225 INFO L82 PathProgramCache]: Analyzing trace with hash 1933795261, now seen corresponding path program 1 times [2020-10-14 00:53:59,235 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:53:59,236 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1149341040] [2020-10-14 00:53:59,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:53:59,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:53:59,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:54:00,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:54:03,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:54:03,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-14 00:54:03,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:54:03,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3844 [2020-10-14 00:54:03,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:54:03,572 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:54:03,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 00:54:03,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 00:54:03,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 158 [2020-10-14 00:54:03,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 00:54:03,976 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:54:03,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:54:03,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:54:03,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:54:04,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:54:04,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:54:04,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:54:04,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 00:54:04,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:54:04,009 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:54:04,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:54:04,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:54:04,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 00:54:04,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:54:04,104 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 00:54:04,105 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1149341040] [2020-10-14 00:54:04,107 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 00:54:04,108 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 00:54:04,109 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518291666] [2020-10-14 00:54:04,114 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 00:54:04,114 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:54:04,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 00:54:04,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 00:54:04,132 INFO L87 Difference]: Start difference. First operand 311 states. Second operand 4 states. [2020-10-14 00:54:04,340 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:54:06,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:54:06,946 INFO L93 Difference]: Finished difference Result 893 states and 1554 transitions. [2020-10-14 00:54:06,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 00:54:06,949 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 156 [2020-10-14 00:54:06,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:54:06,969 INFO L225 Difference]: With dead ends: 893 [2020-10-14 00:54:06,969 INFO L226 Difference]: Without dead ends: 488 [2020-10-14 00:54:06,978 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 00:54:06,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 488 states. [2020-10-14 00:54:07,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 488 to 470. [2020-10-14 00:54:07,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 470 states. [2020-10-14 00:54:07,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 470 states to 470 states and 755 transitions. [2020-10-14 00:54:07,074 INFO L78 Accepts]: Start accepts. Automaton has 470 states and 755 transitions. Word has length 156 [2020-10-14 00:54:07,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:54:07,076 INFO L479 AbstractCegarLoop]: Abstraction has 470 states and 755 transitions. [2020-10-14 00:54:07,076 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 00:54:07,076 INFO L276 IsEmpty]: Start isEmpty. Operand 470 states and 755 transitions. [2020-10-14 00:54:07,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-10-14 00:54:07,082 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:54:07,083 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:54:07,083 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 00:54:07,083 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:54:07,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:54:07,084 INFO L82 PathProgramCache]: Analyzing trace with hash -2055560806, now seen corresponding path program 1 times [2020-10-14 00:54:07,084 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:54:07,084 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [209815066] [2020-10-14 00:54:07,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:54:07,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:54:07,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:54:07,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:54:09,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:54:09,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-10-14 00:54:09,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:54:09,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2786 [2020-10-14 00:54:09,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:54:09,914 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:54:09,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:54:09,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 00:54:09,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 155 [2020-10-14 00:54:09,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:54:10,161 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:54:10,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:54:10,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:54:10,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:54:10,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:54:10,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:54:10,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:54:10,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 00:54:10,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:54:10,177 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:54:10,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:54:10,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:54:10,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:54:10,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:54:10,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:54:10,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:54:10,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:54:10,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:54:10,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:54:10,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:54:10,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 00:54:10,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:54:10,276 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:54:10,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:54:10,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:54:10,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 00:54:10,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:54:10,402 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 00:54:10,403 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [209815066] [2020-10-14 00:54:10,403 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:54:10,403 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 00:54:10,404 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165918357] [2020-10-14 00:54:10,405 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 00:54:10,406 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:54:10,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 00:54:10,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 00:54:10,407 INFO L87 Difference]: Start difference. First operand 470 states and 755 transitions. Second operand 5 states. [2020-10-14 00:54:10,681 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:54:13,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:54:13,945 INFO L93 Difference]: Finished difference Result 1376 states and 2248 transitions. [2020-10-14 00:54:13,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 00:54:13,947 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 165 [2020-10-14 00:54:13,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:54:13,955 INFO L225 Difference]: With dead ends: 1376 [2020-10-14 00:54:13,955 INFO L226 Difference]: Without dead ends: 912 [2020-10-14 00:54:13,958 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 00:54:13,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 912 states. [2020-10-14 00:54:14,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 912 to 894. [2020-10-14 00:54:14,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 894 states. [2020-10-14 00:54:14,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 894 states to 894 states and 1420 transitions. [2020-10-14 00:54:14,012 INFO L78 Accepts]: Start accepts. Automaton has 894 states and 1420 transitions. Word has length 165 [2020-10-14 00:54:14,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:54:14,012 INFO L479 AbstractCegarLoop]: Abstraction has 894 states and 1420 transitions. [2020-10-14 00:54:14,012 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 00:54:14,013 INFO L276 IsEmpty]: Start isEmpty. Operand 894 states and 1420 transitions. [2020-10-14 00:54:14,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-10-14 00:54:14,018 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:54:14,019 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:54:14,019 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 00:54:14,019 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:54:14,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:54:14,020 INFO L82 PathProgramCache]: Analyzing trace with hash 1409737428, now seen corresponding path program 1 times [2020-10-14 00:54:14,020 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:54:14,020 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1773846640] [2020-10-14 00:54:14,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:54:14,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:54:14,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:54:14,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:54:14,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:54:16,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:54:16,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-14 00:54:16,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 00:54:16,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2732 [2020-10-14 00:54:16,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:54:16,792 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:54:16,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:54:16,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-14 00:54:16,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 157 [2020-10-14 00:54:16,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:54:17,062 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:54:17,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:54:17,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:54:17,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:54:17,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:54:17,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:54:17,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:54:17,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 00:54:17,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:54:17,082 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:54:17,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:54:17,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:54:17,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:54:17,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 00:54:17,221 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-14 00:54:17,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:54:17,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:54:17,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:54:17,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:54:17,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 00:54:17,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:54:17,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 00:54:17,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:54:17,253 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:54:17,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:54:17,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:54:17,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-14 00:54:17,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:54:17,322 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 00:54:17,323 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1773846640] [2020-10-14 00:54:17,323 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:54:17,323 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 00:54:17,324 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720591681] [2020-10-14 00:54:17,325 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 00:54:17,325 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:54:17,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 00:54:17,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 00:54:17,326 INFO L87 Difference]: Start difference. First operand 894 states and 1420 transitions. Second operand 5 states. [2020-10-14 00:54:17,472 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:54:20,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:54:20,209 INFO L93 Difference]: Finished difference Result 2632 states and 4250 transitions. [2020-10-14 00:54:20,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 00:54:20,210 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 166 [2020-10-14 00:54:20,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:54:20,222 INFO L225 Difference]: With dead ends: 2632 [2020-10-14 00:54:20,223 INFO L226 Difference]: Without dead ends: 1744 [2020-10-14 00:54:20,226 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 00:54:20,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1744 states. [2020-10-14 00:54:20,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1744 to 1738. [2020-10-14 00:54:20,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1738 states. [2020-10-14 00:54:20,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1738 states to 1738 states and 2666 transitions. [2020-10-14 00:54:20,329 INFO L78 Accepts]: Start accepts. Automaton has 1738 states and 2666 transitions. Word has length 166 [2020-10-14 00:54:20,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:54:20,330 INFO L479 AbstractCegarLoop]: Abstraction has 1738 states and 2666 transitions. [2020-10-14 00:54:20,330 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 00:54:20,330 INFO L276 IsEmpty]: Start isEmpty. Operand 1738 states and 2666 transitions. [2020-10-14 00:54:20,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-10-14 00:54:20,337 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:54:20,337 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:54:20,338 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 00:54:20,338 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:54:20,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:54:20,338 INFO L82 PathProgramCache]: Analyzing trace with hash -359734186, now seen corresponding path program 1 times [2020-10-14 00:54:20,339 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:54:20,339 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1232303690] [2020-10-14 00:54:20,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:54:20,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:54:20,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:54:20,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:54:20,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:54:21,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:54:21,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:54:22,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:54:22,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:54:22,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-14 00:54:22,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 00:54:22,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2620 [2020-10-14 00:54:22,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:54:22,990 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:54:22,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:54:22,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 00:54:22,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 156 [2020-10-14 00:54:22,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:54:23,187 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:54:23,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:54:23,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:54:23,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:54:23,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:54:23,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:54:23,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:54:23,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 00:54:23,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:54:23,200 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:54:23,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:54:23,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:54:23,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:54:23,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:54:23,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:54:23,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:54:23,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:54:23,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:54:23,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:54:23,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 00:54:23,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:54:23,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 00:54:23,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:54:23,294 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:54:23,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:54:23,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:54:23,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 00:54:23,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:54:23,355 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 00:54:23,356 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1232303690] [2020-10-14 00:54:23,356 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:54:23,356 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 00:54:23,356 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605849921] [2020-10-14 00:54:23,357 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 00:54:23,357 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:54:23,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 00:54:23,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 00:54:23,358 INFO L87 Difference]: Start difference. First operand 1738 states and 2666 transitions. Second operand 5 states. [2020-10-14 00:54:23,608 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 00:54:26,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:54:26,152 INFO L93 Difference]: Finished difference Result 4940 states and 7665 transitions. [2020-10-14 00:54:26,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 00:54:26,153 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 166 [2020-10-14 00:54:26,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:54:26,165 INFO L225 Difference]: With dead ends: 4940 [2020-10-14 00:54:26,165 INFO L226 Difference]: Without dead ends: 1741 [2020-10-14 00:54:26,173 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 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 00:54:26,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1741 states. [2020-10-14 00:54:26,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1741 to 1737. [2020-10-14 00:54:26,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1737 states. [2020-10-14 00:54:26,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1737 states to 1737 states and 2664 transitions. [2020-10-14 00:54:26,237 INFO L78 Accepts]: Start accepts. Automaton has 1737 states and 2664 transitions. Word has length 166 [2020-10-14 00:54:26,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:54:26,237 INFO L479 AbstractCegarLoop]: Abstraction has 1737 states and 2664 transitions. [2020-10-14 00:54:26,238 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 00:54:26,238 INFO L276 IsEmpty]: Start isEmpty. Operand 1737 states and 2664 transitions. [2020-10-14 00:54:26,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-10-14 00:54:26,243 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:54:26,244 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:54:26,244 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 00:54:26,244 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:54:26,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:54:26,245 INFO L82 PathProgramCache]: Analyzing trace with hash 440187077, now seen corresponding path program 1 times [2020-10-14 00:54:26,245 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:54:26,245 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [145150145] [2020-10-14 00:54:26,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:54:26,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:54:26,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:54:26,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:54:28,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:54:28,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-14 00:54:28,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:54:28,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2390 [2020-10-14 00:54:28,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:54:28,708 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:54:28,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:54:28,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-14 00:54:28,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 155 [2020-10-14 00:54:28,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:54:28,895 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:54:28,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:54:28,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:54:28,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:54:28,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:54:28,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:54:28,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:54:28,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 00:54:28,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:54:28,905 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:54:28,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:54:28,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:54:28,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:54:28,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:54:28,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:54:28,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:54:28,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:54:29,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:54:29,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-14 00:54:29,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:54:29,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 00:54:29,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:54:29,008 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:54:29,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:54:29,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:54:29,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 00:54:29,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:54:29,067 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 00:54:29,067 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [145150145] [2020-10-14 00:54:29,068 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:54:29,068 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 00:54:29,068 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918382593] [2020-10-14 00:54:29,069 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 00:54:29,070 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:54:29,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 00:54:29,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 00:54:29,070 INFO L87 Difference]: Start difference. First operand 1737 states and 2664 transitions. Second operand 5 states. [2020-10-14 00:54:29,303 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:54:31,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:54:31,820 INFO L93 Difference]: Finished difference Result 5153 states and 8115 transitions. [2020-10-14 00:54:31,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 00:54:31,821 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 170 [2020-10-14 00:54:31,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:54:31,853 INFO L225 Difference]: With dead ends: 5153 [2020-10-14 00:54:31,853 INFO L226 Difference]: Without dead ends: 3422 [2020-10-14 00:54:31,858 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 00:54:31,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3422 states. [2020-10-14 00:54:31,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3422 to 3412. [2020-10-14 00:54:31,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3412 states. [2020-10-14 00:54:32,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3412 states to 3412 states and 5172 transitions. [2020-10-14 00:54:32,006 INFO L78 Accepts]: Start accepts. Automaton has 3412 states and 5172 transitions. Word has length 170 [2020-10-14 00:54:32,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:54:32,007 INFO L479 AbstractCegarLoop]: Abstraction has 3412 states and 5172 transitions. [2020-10-14 00:54:32,008 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 00:54:32,009 INFO L276 IsEmpty]: Start isEmpty. Operand 3412 states and 5172 transitions. [2020-10-14 00:54:32,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-10-14 00:54:32,020 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:54:32,020 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:54:32,020 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 00:54:32,021 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:54:32,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:54:32,021 INFO L82 PathProgramCache]: Analyzing trace with hash 642664422, now seen corresponding path program 1 times [2020-10-14 00:54:32,021 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:54:32,022 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1122896890] [2020-10-14 00:54:32,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:54:32,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:54:32,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:54:32,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:54:33,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:54:33,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 185 [2020-10-14 00:54:33,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:54:33,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1176 [2020-10-14 00:54:33,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:54:33,232 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:54:33,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:54:33,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-14 00:54:33,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 155 [2020-10-14 00:54:33,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:54:33,413 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:54:33,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:54:33,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:54:33,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:54:33,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:54:33,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:54:33,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:54:33,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 00:54:33,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:54:33,424 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:54:33,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:54:33,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:54:33,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:54:33,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:54:33,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:54:33,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:54:33,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:54:33,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:54:33,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 00:54:33,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:54:33,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-14 00:54:33,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:54:33,524 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:54:33,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:54:33,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:54:33,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 00:54:33,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:54:33,574 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 00:54:33,575 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1122896890] [2020-10-14 00:54:33,575 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:54:33,575 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 00:54:33,576 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930262592] [2020-10-14 00:54:33,576 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 00:54:33,576 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:54:33,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 00:54:33,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 00:54:33,577 INFO L87 Difference]: Start difference. First operand 3412 states and 5172 transitions. Second operand 5 states. [2020-10-14 00:54:33,725 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:54:36,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:54:36,541 INFO L93 Difference]: Finished difference Result 9960 states and 15645 transitions. [2020-10-14 00:54:36,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 00:54:36,543 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 175 [2020-10-14 00:54:36,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:54:36,581 INFO L225 Difference]: With dead ends: 9960 [2020-10-14 00:54:36,582 INFO L226 Difference]: Without dead ends: 6554 [2020-10-14 00:54:36,595 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 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 00:54:36,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6554 states. [2020-10-14 00:54:36,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6554 to 6548. [2020-10-14 00:54:36,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6548 states. [2020-10-14 00:54:36,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6548 states to 6548 states and 10008 transitions. [2020-10-14 00:54:36,832 INFO L78 Accepts]: Start accepts. Automaton has 6548 states and 10008 transitions. Word has length 175 [2020-10-14 00:54:36,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:54:36,833 INFO L479 AbstractCegarLoop]: Abstraction has 6548 states and 10008 transitions. [2020-10-14 00:54:36,833 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 00:54:36,833 INFO L276 IsEmpty]: Start isEmpty. Operand 6548 states and 10008 transitions. [2020-10-14 00:54:36,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-10-14 00:54:36,853 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:54:36,854 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:54:36,854 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 00:54:36,854 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:54:36,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:54:36,854 INFO L82 PathProgramCache]: Analyzing trace with hash 739572386, now seen corresponding path program 1 times [2020-10-14 00:54:36,855 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:54:36,856 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1250865196] [2020-10-14 00:54:36,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:54:36,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:54:36,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:54:37,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:54:38,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:54:38,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:54:38,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 203 [2020-10-14 00:54:38,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 00:54:38,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1798 [2020-10-14 00:54:38,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:54:38,705 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:54:38,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:54:38,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-14 00:54:38,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 155 [2020-10-14 00:54:38,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:54:38,870 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:54:38,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:54:38,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:54:38,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:54:38,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:54:38,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:54:38,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:54:38,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 00:54:38,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:54:38,881 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:54:38,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:54:38,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:54:38,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:54:38,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:54:38,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:54:38,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:54:38,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:54:39,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:54:39,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-14 00:54:39,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:54:39,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-14 00:54:39,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:54:39,014 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:54:39,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:54:39,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:54:39,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-14 00:54:39,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:54:39,071 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 33 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 00:54:39,072 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1250865196] [2020-10-14 00:54:39,072 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:54:39,072 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 00:54:39,072 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708886471] [2020-10-14 00:54:39,073 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 00:54:39,073 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:54:39,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 00:54:39,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 00:54:39,074 INFO L87 Difference]: Start difference. First operand 6548 states and 10008 transitions. Second operand 5 states. [2020-10-14 00:54:39,337 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:54:41,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:54:41,897 INFO L93 Difference]: Finished difference Result 16022 states and 25168 transitions. [2020-10-14 00:54:41,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 00:54:41,899 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 193 [2020-10-14 00:54:41,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:54:41,952 INFO L225 Difference]: With dead ends: 16022 [2020-10-14 00:54:41,952 INFO L226 Difference]: Without dead ends: 9480 [2020-10-14 00:54:41,971 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 00:54:41,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9480 states. [2020-10-14 00:54:42,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9480 to 9474. [2020-10-14 00:54:42,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9474 states. [2020-10-14 00:54:42,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9474 states to 9474 states and 13978 transitions. [2020-10-14 00:54:42,338 INFO L78 Accepts]: Start accepts. Automaton has 9474 states and 13978 transitions. Word has length 193 [2020-10-14 00:54:42,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:54:42,338 INFO L479 AbstractCegarLoop]: Abstraction has 9474 states and 13978 transitions. [2020-10-14 00:54:42,339 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 00:54:42,339 INFO L276 IsEmpty]: Start isEmpty. Operand 9474 states and 13978 transitions. [2020-10-14 00:54:42,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2020-10-14 00:54:42,364 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:54:42,364 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:54:42,365 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 00:54:42,365 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:54:42,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:54:42,365 INFO L82 PathProgramCache]: Analyzing trace with hash 97623102, now seen corresponding path program 1 times [2020-10-14 00:54:42,365 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:54:42,366 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [398819254] [2020-10-14 00:54:42,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:54:42,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:54:42,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:54:42,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:54:44,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:54:44,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:54:44,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 212 [2020-10-14 00:54:44,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 00:54:44,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1925 [2020-10-14 00:54:44,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:54:44,333 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:54:44,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:54:44,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-10-14 00:54:44,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 155 [2020-10-14 00:54:44,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:54:44,559 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:54:44,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:54:44,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:54:44,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:54:44,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:54:44,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:54:44,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:54:44,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 00:54:44,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:54:44,573 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:54:44,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:54:44,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:54:44,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:54:44,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:54:44,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:54:44,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:54:44,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:54:44,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:54:44,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-14 00:54:44,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:54:44,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-14 00:54:44,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:54:44,713 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:54:44,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:54:44,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:54:44,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-14 00:54:44,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:54:44,795 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 42 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 00:54:44,796 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [398819254] [2020-10-14 00:54:44,796 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:54:44,796 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 00:54:44,796 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065415414] [2020-10-14 00:54:44,797 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 00:54:44,797 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:54:44,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 00:54:44,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 00:54:44,797 INFO L87 Difference]: Start difference. First operand 9474 states and 13978 transitions. Second operand 5 states. [2020-10-14 00:54:44,933 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-14 00:54:47,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:54:47,187 INFO L93 Difference]: Finished difference Result 26475 states and 40080 transitions. [2020-10-14 00:54:47,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 00:54:47,188 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 202 [2020-10-14 00:54:47,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:54:47,266 INFO L225 Difference]: With dead ends: 26475 [2020-10-14 00:54:47,266 INFO L226 Difference]: Without dead ends: 17007 [2020-10-14 00:54:47,291 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 2 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 00:54:47,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17007 states. [2020-10-14 00:54:47,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17007 to 17002. [2020-10-14 00:54:47,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17002 states. [2020-10-14 00:54:47,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17002 states to 17002 states and 24543 transitions. [2020-10-14 00:54:47,793 INFO L78 Accepts]: Start accepts. Automaton has 17002 states and 24543 transitions. Word has length 202 [2020-10-14 00:54:47,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:54:47,794 INFO L479 AbstractCegarLoop]: Abstraction has 17002 states and 24543 transitions. [2020-10-14 00:54:47,794 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 00:54:47,794 INFO L276 IsEmpty]: Start isEmpty. Operand 17002 states and 24543 transitions. [2020-10-14 00:54:47,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2020-10-14 00:54:47,840 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:54:47,841 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:54:47,841 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 00:54:47,841 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:54:47,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:54:47,842 INFO L82 PathProgramCache]: Analyzing trace with hash 539406336, now seen corresponding path program 1 times [2020-10-14 00:54:47,842 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:54:47,842 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [176699105] [2020-10-14 00:54:47,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:54:47,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:54:47,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:54:48,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:54:48,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 229 [2020-10-14 00:54:48,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:54:48,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 798 [2020-10-14 00:54:48,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:54:48,698 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:54:48,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 00:54:48,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 00:54:48,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-14 00:54:48,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:54:48,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:54:48,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:54:48,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:54:48,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:54:48,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:54:48,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:54:48,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 00:54:48,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:54:48,882 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:54:48,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:54:48,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:54:48,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 00:54:48,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:54:48,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:54:48,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:54:48,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:54:49,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:54:49,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-14 00:54:49,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:54:49,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-14 00:54:49,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:54:49,076 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:54:49,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:54:49,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:54:49,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-14 00:54:49,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:54:49,208 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 00:54:49,209 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [176699105] [2020-10-14 00:54:49,209 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 00:54:49,209 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 00:54:49,209 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874623065] [2020-10-14 00:54:49,210 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 00:54:49,210 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:54:49,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 00:54:49,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:54:49,211 INFO L87 Difference]: Start difference. First operand 17002 states and 24543 transitions. Second operand 7 states. [2020-10-14 00:54:49,379 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:54:52,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:54:52,160 INFO L93 Difference]: Finished difference Result 34267 states and 51246 transitions. [2020-10-14 00:54:52,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 00:54:52,160 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 219 [2020-10-14 00:54:52,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:54:52,235 INFO L225 Difference]: With dead ends: 34267 [2020-10-14 00:54:52,235 INFO L226 Difference]: Without dead ends: 17271 [2020-10-14 00:54:52,276 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 00:54:52,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17271 states. [2020-10-14 00:54:52,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17271 to 17114. [2020-10-14 00:54:52,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17114 states. [2020-10-14 00:54:52,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17114 states to 17114 states and 22894 transitions. [2020-10-14 00:54:52,779 INFO L78 Accepts]: Start accepts. Automaton has 17114 states and 22894 transitions. Word has length 219 [2020-10-14 00:54:52,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:54:52,779 INFO L479 AbstractCegarLoop]: Abstraction has 17114 states and 22894 transitions. [2020-10-14 00:54:52,780 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 00:54:52,780 INFO L276 IsEmpty]: Start isEmpty. Operand 17114 states and 22894 transitions. [2020-10-14 00:54:52,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2020-10-14 00:54:52,829 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:54:52,829 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:54:52,829 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 00:54:52,830 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:54:52,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:54:52,830 INFO L82 PathProgramCache]: Analyzing trace with hash -1143124096, now seen corresponding path program 1 times [2020-10-14 00:54:52,830 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:54:52,830 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [769065079] [2020-10-14 00:54:52,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:54:52,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:54:52,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:54:52,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:54:53,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:54:57,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:54:57,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 269 [2020-10-14 00:54:57,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 00:54:57,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5056 [2020-10-14 00:54:57,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:54:57,942 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:54:57,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:54:57,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-14 00:54:57,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-14 00:54:57,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 00:54:58,177 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:54:58,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:54:58,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:54:58,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:54:58,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:54:58,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:54:58,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:54:58,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 00:54:58,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:54:58,189 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:54:58,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:54:58,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:54:58,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:54:58,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:54:58,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:54:58,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:54:58,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:54:58,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:54:58,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 00:54:58,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:54:58,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 00:54:58,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:54:58,273 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:54:58,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:54:58,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:54:58,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:54:58,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:54:58,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 00:54:58,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:54:58,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:54:58,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:54:58,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 00:54:58,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:54:58,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-14 00:54:58,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:54:58,339 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:54:58,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:54:58,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:54:58,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 00:54:58,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:54:58,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-14 00:54:58,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:54:58,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:54:58,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:54:58,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-14 00:54:58,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:54:58,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 195 [2020-10-14 00:54:58,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:54:58,573 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:54:58,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:54:58,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:54:58,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-14 00:54:58,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:54:58,744 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 121 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-14 00:54:58,744 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [769065079] [2020-10-14 00:54:58,744 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:54:58,744 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 00:54:58,745 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208809168] [2020-10-14 00:54:58,745 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 00:54:58,745 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:54:58,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 00:54:58,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:54:58,746 INFO L87 Difference]: Start difference. First operand 17114 states and 22894 transitions. Second operand 7 states. [2020-10-14 00:54:58,889 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-14 00:54:59,435 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-14 00:55:01,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:55:01,941 INFO L93 Difference]: Finished difference Result 37261 states and 50304 transitions. [2020-10-14 00:55:01,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 00:55:01,942 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 255 [2020-10-14 00:55:01,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:55:02,006 INFO L225 Difference]: With dead ends: 37261 [2020-10-14 00:55:02,006 INFO L226 Difference]: Without dead ends: 20153 [2020-10-14 00:55:02,030 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-14 00:55:02,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20153 states. [2020-10-14 00:55:02,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20153 to 19272. [2020-10-14 00:55:02,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19272 states. [2020-10-14 00:55:02,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19272 states to 19272 states and 25048 transitions. [2020-10-14 00:55:02,457 INFO L78 Accepts]: Start accepts. Automaton has 19272 states and 25048 transitions. Word has length 255 [2020-10-14 00:55:02,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:55:02,458 INFO L479 AbstractCegarLoop]: Abstraction has 19272 states and 25048 transitions. [2020-10-14 00:55:02,458 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 00:55:02,458 INFO L276 IsEmpty]: Start isEmpty. Operand 19272 states and 25048 transitions. [2020-10-14 00:55:02,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2020-10-14 00:55:02,488 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:55:02,488 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:55:02,488 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 00:55:02,488 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:55:02,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:55:02,489 INFO L82 PathProgramCache]: Analyzing trace with hash 1604455941, now seen corresponding path program 1 times [2020-10-14 00:55:02,489 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:55:02,490 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1444347022] [2020-10-14 00:55:02,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:55:02,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:55:02,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:02,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:02,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:03,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:06,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:55:06,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 278 [2020-10-14 00:55:06,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 00:55:06,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3635 [2020-10-14 00:55:06,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:55:06,174 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:55:06,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:55:06,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-14 00:55:06,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 00:55:06,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:55:06,331 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:55:06,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:55:06,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:55:06,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:06,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:55:06,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:55:06,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:55:06,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 00:55:06,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:55:06,342 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:55:06,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:55:06,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:55:06,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:55:06,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:55:06,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:55:06,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:55:06,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:06,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:55:06,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 00:55:06,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:55:06,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-14 00:55:06,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:55:06,492 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:55:06,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:55:06,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:55:06,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 00:55:06,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:55:06,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-14 00:55:06,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:55:06,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:06,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:55:06,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 00:55:06,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:55:06,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-14 00:55:06,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:55:06,612 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:55:06,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:55:06,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:55:06,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 00:55:06,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:55:06,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-14 00:55:06,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:55:06,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:06,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:55:06,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-14 00:55:06,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:55:06,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-14 00:55:06,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:55:06,730 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:55:06,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:55:06,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 61 [2020-10-14 00:55:06,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:55:06,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:55:06,833 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 119 proven. 21 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-10-14 00:55:06,834 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1444347022] [2020-10-14 00:55:06,834 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:55:06,834 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 00:55:06,834 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525811683] [2020-10-14 00:55:06,834 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 00:55:06,835 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:55:06,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 00:55:06,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:55:06,835 INFO L87 Difference]: Start difference. First operand 19272 states and 25048 transitions. Second operand 7 states. [2020-10-14 00:55:06,967 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:55:09,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:55:09,946 INFO L93 Difference]: Finished difference Result 56032 states and 75396 transitions. [2020-10-14 00:55:09,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 00:55:09,947 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 264 [2020-10-14 00:55:09,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:55:10,083 INFO L225 Difference]: With dead ends: 56032 [2020-10-14 00:55:10,083 INFO L226 Difference]: Without dead ends: 36766 [2020-10-14 00:55:10,123 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-10-14 00:55:10,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36766 states. [2020-10-14 00:55:10,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36766 to 36415. [2020-10-14 00:55:10,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36415 states. [2020-10-14 00:55:11,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36415 states to 36415 states and 47411 transitions. [2020-10-14 00:55:11,058 INFO L78 Accepts]: Start accepts. Automaton has 36415 states and 47411 transitions. Word has length 264 [2020-10-14 00:55:11,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:55:11,058 INFO L479 AbstractCegarLoop]: Abstraction has 36415 states and 47411 transitions. [2020-10-14 00:55:11,058 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 00:55:11,059 INFO L276 IsEmpty]: Start isEmpty. Operand 36415 states and 47411 transitions. [2020-10-14 00:55:11,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2020-10-14 00:55:11,118 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:55:11,118 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:55:11,119 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 00:55:11,119 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:55:11,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:55:11,119 INFO L82 PathProgramCache]: Analyzing trace with hash -1038138174, now seen corresponding path program 1 times [2020-10-14 00:55:11,119 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:55:11,120 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1696260] [2020-10-14 00:55:11,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:55:11,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:55:11,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:11,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:11,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:11,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:12,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:16,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:55:16,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 297 [2020-10-14 00:55:16,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 00:55:16,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5063 [2020-10-14 00:55:16,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:55:16,235 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:55:16,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:55:16,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-10-14 00:55:16,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 00:55:16,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:55:16,392 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:55:16,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:55:16,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:55:16,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:16,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:55:16,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:55:16,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:55:16,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 00:55:16,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:55:16,406 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:55:16,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:55:16,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:55:16,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:55:16,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:55:16,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:55:16,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:55:16,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:16,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:55:16,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 00:55:16,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:55:16,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 00:55:16,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:55:16,491 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:55:16,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:55:16,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:55:16,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:55:16,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:55:16,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-14 00:55:16,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:55:16,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:16,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:55:16,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 00:55:16,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:55:16,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 00:55:16,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:55:16,517 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:55:16,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:55:16,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:55:16,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 00:55:16,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:55:16,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-14 00:55:16,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:55:16,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:16,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:55:16,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 00:55:16,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:55:16,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-14 00:55:16,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:55:16,618 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:55:16,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:55:16,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:55:16,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 00:55:16,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:55:16,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-14 00:55:16,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:55:16,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:16,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:55:16,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-14 00:55:16,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:55:16,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-14 00:55:16,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:55:16,727 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:55:16,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:55:16,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 61 [2020-10-14 00:55:16,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:55:16,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:55:16,809 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 156 proven. 21 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2020-10-14 00:55:16,809 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1696260] [2020-10-14 00:55:16,809 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:55:16,809 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 00:55:16,809 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435352418] [2020-10-14 00:55:16,810 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 00:55:16,810 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:55:16,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 00:55:16,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:55:16,811 INFO L87 Difference]: Start difference. First operand 36415 states and 47411 transitions. Second operand 7 states. [2020-10-14 00:55:17,134 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 00:55:17,891 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 00:55:20,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:55:20,894 INFO L93 Difference]: Finished difference Result 81395 states and 117103 transitions. [2020-10-14 00:55:20,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 00:55:20,895 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 281 [2020-10-14 00:55:20,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:55:21,157 INFO L225 Difference]: With dead ends: 81395 [2020-10-14 00:55:21,158 INFO L226 Difference]: Without dead ends: 44986 [2020-10-14 00:55:21,241 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-14 00:55:21,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44986 states. [2020-10-14 00:55:22,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44986 to 43556. [2020-10-14 00:55:22,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43556 states. [2020-10-14 00:55:22,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43556 states to 43556 states and 54879 transitions. [2020-10-14 00:55:22,469 INFO L78 Accepts]: Start accepts. Automaton has 43556 states and 54879 transitions. Word has length 281 [2020-10-14 00:55:22,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:55:22,470 INFO L479 AbstractCegarLoop]: Abstraction has 43556 states and 54879 transitions. [2020-10-14 00:55:22,470 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 00:55:22,470 INFO L276 IsEmpty]: Start isEmpty. Operand 43556 states and 54879 transitions. [2020-10-14 00:55:22,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2020-10-14 00:55:22,522 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:55:22,522 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-10-14 00:55:22,523 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 00:55:22,523 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:55:22,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:55:22,523 INFO L82 PathProgramCache]: Analyzing trace with hash 1949696407, now seen corresponding path program 1 times [2020-10-14 00:55:22,524 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:55:22,524 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [846573200] [2020-10-14 00:55:22,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:55:22,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:55:22,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:22,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:22,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:27,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:55:27,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 321 [2020-10-14 00:55:27,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 00:55:27,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5036 [2020-10-14 00:55:27,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:55:27,630 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:55:27,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:55:27,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 00:55:27,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-14 00:55:27,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:55:27,792 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:55:27,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:55:27,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:55:27,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:27,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:55:27,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:55:27,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:55:27,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 00:55:27,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:55:27,811 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:55:27,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:55:27,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:55:27,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:55:27,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:55:27,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:55:27,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:55:27,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:27,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:55:27,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 00:55:27,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:55:27,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 00:55:27,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:55:27,900 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:55:27,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:55:27,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:55:27,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:55:27,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:55:27,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-14 00:55:27,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:55:27,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:28,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:55:28,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-14 00:55:28,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:55:28,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 174 [2020-10-14 00:55:28,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:55:28,099 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:55:28,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:55:28,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:55:28,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-14 00:55:28,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:55:28,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-10-14 00:55:28,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:55:28,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:28,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:55:28,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-14 00:55:28,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:55:28,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-14 00:55:28,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:55:28,277 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:55:28,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:55:28,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 61 [2020-10-14 00:55:28,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:55:28,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:55:28,436 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 152 proven. 62 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-14 00:55:28,436 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [846573200] [2020-10-14 00:55:28,436 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:55:28,436 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 00:55:28,437 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71712407] [2020-10-14 00:55:28,437 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 00:55:28,437 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:55:28,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 00:55:28,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:55:28,438 INFO L87 Difference]: Start difference. First operand 43556 states and 54879 transitions. Second operand 7 states. [2020-10-14 00:55:28,570 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 00:55:29,346 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-14 00:55:31,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:55:31,216 INFO L93 Difference]: Finished difference Result 87274 states and 110519 transitions. [2020-10-14 00:55:31,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 00:55:31,217 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 307 [2020-10-14 00:55:31,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:55:31,347 INFO L225 Difference]: With dead ends: 87274 [2020-10-14 00:55:31,347 INFO L226 Difference]: Without dead ends: 43724 [2020-10-14 00:55:31,409 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 00:55:31,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43724 states. [2020-10-14 00:55:32,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43724 to 43568. [2020-10-14 00:55:32,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43568 states. [2020-10-14 00:55:32,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43568 states to 43568 states and 54096 transitions. [2020-10-14 00:55:32,305 INFO L78 Accepts]: Start accepts. Automaton has 43568 states and 54096 transitions. Word has length 307 [2020-10-14 00:55:32,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:55:32,306 INFO L479 AbstractCegarLoop]: Abstraction has 43568 states and 54096 transitions. [2020-10-14 00:55:32,306 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 00:55:32,306 INFO L276 IsEmpty]: Start isEmpty. Operand 43568 states and 54096 transitions. [2020-10-14 00:55:32,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2020-10-14 00:55:32,382 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:55:32,382 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 00:55:32,383 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 00:55:32,383 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:55:32,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:55:32,384 INFO L82 PathProgramCache]: Analyzing trace with hash 379713074, now seen corresponding path program 1 times [2020-10-14 00:55:32,384 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:55:32,384 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1068000208] [2020-10-14 00:55:32,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:55:32,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:55:32,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:32,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:35,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:55:35,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 331 [2020-10-14 00:55:35,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:55:35,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3299 [2020-10-14 00:55:35,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:55:35,859 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:55:35,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:55:35,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-14 00:55:35,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-14 00:55:35,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:55:36,037 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:55:36,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:55:36,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:55:36,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:36,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:55:36,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:55:36,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:55:36,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 00:55:36,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:55:36,047 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:55:36,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:55:36,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:55:36,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:55:36,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:55:36,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:55:36,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:55:36,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:36,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:55:36,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-14 00:55:36,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:55:36,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-14 00:55:36,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:55:36,252 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:55:36,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:55:36,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:55:36,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-14 00:55:36,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:55:36,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-14 00:55:36,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:55:36,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:36,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:55:36,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-14 00:55:36,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:55:36,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-14 00:55:36,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:55:36,409 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:55:36,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:55:36,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:55:36,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-14 00:55:36,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:55:36,545 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 217 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 00:55:36,546 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1068000208] [2020-10-14 00:55:36,546 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:55:36,546 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 00:55:36,546 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143727789] [2020-10-14 00:55:36,547 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 00:55:36,547 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:55:36,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 00:55:36,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:55:36,548 INFO L87 Difference]: Start difference. First operand 43568 states and 54096 transitions. Second operand 7 states. [2020-10-14 00:55:36,704 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-14 00:55:37,558 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-14 00:55:40,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:55:40,406 INFO L93 Difference]: Finished difference Result 95354 states and 119253 transitions. [2020-10-14 00:55:40,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 00:55:40,406 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 319 [2020-10-14 00:55:40,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:55:40,568 INFO L225 Difference]: With dead ends: 95354 [2020-10-14 00:55:40,568 INFO L226 Difference]: Without dead ends: 51792 [2020-10-14 00:55:40,641 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 00:55:40,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51792 states. [2020-10-14 00:55:41,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51792 to 50915. [2020-10-14 00:55:41,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50915 states. [2020-10-14 00:55:41,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50915 states to 50915 states and 62134 transitions. [2020-10-14 00:55:41,876 INFO L78 Accepts]: Start accepts. Automaton has 50915 states and 62134 transitions. Word has length 319 [2020-10-14 00:55:41,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:55:41,877 INFO L479 AbstractCegarLoop]: Abstraction has 50915 states and 62134 transitions. [2020-10-14 00:55:41,877 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 00:55:41,877 INFO L276 IsEmpty]: Start isEmpty. Operand 50915 states and 62134 transitions. [2020-10-14 00:55:41,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2020-10-14 00:55:41,951 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:55:41,951 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, 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] [2020-10-14 00:55:41,951 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 00:55:41,952 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:55:41,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:55:41,952 INFO L82 PathProgramCache]: Analyzing trace with hash -110272357, now seen corresponding path program 1 times [2020-10-14 00:55:41,953 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:55:41,953 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1659126239] [2020-10-14 00:55:41,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:55:42,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:55:42,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:42,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:42,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:47,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:55:47,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 342 [2020-10-14 00:55:47,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 00:55:47,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-14 00:55:47,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:55:47,074 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:55:47,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:55:47,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-14 00:55:47,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-14 00:55:47,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:55:47,239 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:55:47,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:55:47,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:55:47,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:47,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:55:47,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:55:47,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:55:47,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 00:55:47,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:55:47,250 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:55:47,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:55:47,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:55:47,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:55:47,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:55:47,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:55:47,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:55:47,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:47,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:55:47,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-14 00:55:47,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:55:47,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-14 00:55:47,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:55:47,368 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:55:47,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:55:47,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:55:47,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-14 00:55:47,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:55:47,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-14 00:55:47,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:55:47,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:47,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:55:47,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-14 00:55:47,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:55:47,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-14 00:55:47,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:55:47,524 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:55:47,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:55:47,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:55:47,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-14 00:55:47,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:55:47,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-14 00:55:47,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:55:47,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:47,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:55:47,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-14 00:55:47,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:55:47,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-14 00:55:47,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:55:47,670 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:55:47,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:55:47,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 61 [2020-10-14 00:55:47,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:55:47,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:55:47,827 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 194 proven. 62 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-10-14 00:55:47,828 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1659126239] [2020-10-14 00:55:47,828 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:55:47,828 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 00:55:47,828 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767481236] [2020-10-14 00:55:47,829 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 00:55:47,829 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:55:47,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 00:55:47,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:55:47,829 INFO L87 Difference]: Start difference. First operand 50915 states and 62134 transitions. Second operand 7 states. [2020-10-14 00:55:48,117 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-14 00:55:49,730 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-14 00:55:51,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:55:51,254 INFO L93 Difference]: Finished difference Result 112910 states and 137132 transitions. [2020-10-14 00:55:51,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 00:55:51,254 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 328 [2020-10-14 00:55:51,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:55:51,412 INFO L225 Difference]: With dead ends: 112910 [2020-10-14 00:55:51,412 INFO L226 Difference]: Without dead ends: 62001 [2020-10-14 00:55:51,502 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 00:55:51,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62001 states. [2020-10-14 00:55:52,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62001 to 61900. [2020-10-14 00:55:52,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61900 states. [2020-10-14 00:55:53,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61900 states to 61900 states and 74402 transitions. [2020-10-14 00:55:53,027 INFO L78 Accepts]: Start accepts. Automaton has 61900 states and 74402 transitions. Word has length 328 [2020-10-14 00:55:53,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:55:53,028 INFO L479 AbstractCegarLoop]: Abstraction has 61900 states and 74402 transitions. [2020-10-14 00:55:53,028 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 00:55:53,028 INFO L276 IsEmpty]: Start isEmpty. Operand 61900 states and 74402 transitions. [2020-10-14 00:55:53,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2020-10-14 00:55:53,099 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:55:53,099 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 00:55:53,100 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 00:55:53,100 INFO L427 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:55:53,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:55:53,100 INFO L82 PathProgramCache]: Analyzing trace with hash -700837518, now seen corresponding path program 1 times [2020-10-14 00:55:53,105 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:55:53,105 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [119997811] [2020-10-14 00:55:53,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:55:53,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:55:53,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:53,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:53,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:58,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:55:58,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 351 [2020-10-14 00:55:58,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 00:55:58,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5045 [2020-10-14 00:55:58,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:55:58,260 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:55:58,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:55:58,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 130 [2020-10-14 00:55:58,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-14 00:55:58,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:55:58,448 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:55:58,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:55:58,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:55:58,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:58,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:55:58,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:55:58,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:55:58,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 00:55:58,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:55:58,458 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:55:58,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:55:58,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:55:58,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:55:58,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:55:58,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:55:58,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:55:58,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:58,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:55:58,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-14 00:55:58,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:55:58,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-14 00:55:58,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:55:58,590 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:55:58,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:55:58,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:55:58,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:55:58,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:55:58,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-14 00:55:58,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:55:58,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:58,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:55:58,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 00:55:58,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:55:58,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 00:55:58,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:55:58,644 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:55:58,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:55:58,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:55:58,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 00:55:58,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:55:58,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-14 00:55:58,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:55:58,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:58,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:55:58,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-14 00:55:58,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:55:58,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-14 00:55:58,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:55:58,770 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:55:58,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:55:58,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:55:58,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-14 00:55:58,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:55:58,887 INFO L134 CoverageAnalysis]: Checked inductivity of 271 backedges. 252 proven. 2 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-10-14 00:55:58,887 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [119997811] [2020-10-14 00:55:58,888 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:55:58,888 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 00:55:58,888 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355648464] [2020-10-14 00:55:58,888 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 00:55:58,889 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:55:58,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 00:55:58,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:55:58,889 INFO L87 Difference]: Start difference. First operand 61900 states and 74402 transitions. Second operand 7 states. [2020-10-14 00:55:59,206 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-14 00:56:00,230 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:56:05,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:56:05,836 INFO L93 Difference]: Finished difference Result 238997 states and 311673 transitions. [2020-10-14 00:56:05,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 00:56:05,837 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 337 [2020-10-14 00:56:05,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:56:06,591 INFO L225 Difference]: With dead ends: 238997 [2020-10-14 00:56:06,591 INFO L226 Difference]: Without dead ends: 177103 [2020-10-14 00:56:06,720 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 1 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 00:56:06,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177103 states. [2020-10-14 00:56:10,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177103 to 176085. [2020-10-14 00:56:10,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176085 states. [2020-10-14 00:56:10,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176085 states to 176085 states and 227154 transitions. [2020-10-14 00:56:10,680 INFO L78 Accepts]: Start accepts. Automaton has 176085 states and 227154 transitions. Word has length 337 [2020-10-14 00:56:10,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:56:10,681 INFO L479 AbstractCegarLoop]: Abstraction has 176085 states and 227154 transitions. [2020-10-14 00:56:10,681 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 00:56:10,681 INFO L276 IsEmpty]: Start isEmpty. Operand 176085 states and 227154 transitions. [2020-10-14 00:56:10,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2020-10-14 00:56:10,919 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:56:10,920 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 00:56:10,920 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 00:56:10,920 INFO L427 AbstractCegarLoop]: === Iteration 17 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:56:10,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:56:10,920 INFO L82 PathProgramCache]: Analyzing trace with hash -873108363, now seen corresponding path program 1 times [2020-10-14 00:56:10,921 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:56:10,921 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [444188328] [2020-10-14 00:56:10,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:56:10,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:56:11,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:11,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:11,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:16,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:56:16,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 360 [2020-10-14 00:56:16,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 00:56:16,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5053 [2020-10-14 00:56:16,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:56:16,022 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:56:16,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:56:16,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-14 00:56:16,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-14 00:56:16,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:56:16,240 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:56:16,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:56:16,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:56:16,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:16,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:56:16,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:56:16,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:56:16,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 00:56:16,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:56:16,251 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:56:16,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:56:16,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:56:16,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:56:16,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:56:16,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:56:16,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:56:16,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:16,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:56:16,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 00:56:16,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:56:16,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 00:56:16,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:56:16,341 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:56:16,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:56:16,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:56:16,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:56:16,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:56:16,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-14 00:56:16,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:56:16,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:16,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:56:16,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-14 00:56:16,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:56:16,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-14 00:56:16,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:56:16,428 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:56:16,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:56:16,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:56:16,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-14 00:56:16,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:56:16,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-14 00:56:16,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:56:16,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:16,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:56:16,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-14 00:56:16,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:56:16,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 181 [2020-10-14 00:56:16,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:56:16,661 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:56:16,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:56:16,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:56:16,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-14 00:56:16,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:56:16,916 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 258 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-14 00:56:16,917 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [444188328] [2020-10-14 00:56:16,917 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:56:16,917 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 00:56:16,917 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354335241] [2020-10-14 00:56:16,918 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 00:56:16,918 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:56:16,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 00:56:16,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 00:56:16,919 INFO L87 Difference]: Start difference. First operand 176085 states and 227154 transitions. Second operand 8 states. [2020-10-14 00:56:17,063 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:56:18,936 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-14 00:56:23,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:56:23,749 INFO L93 Difference]: Finished difference Result 355786 states and 468488 transitions. [2020-10-14 00:56:23,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 00:56:23,750 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 346 [2020-10-14 00:56:23,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:56:24,415 INFO L225 Difference]: With dead ends: 355786 [2020-10-14 00:56:24,415 INFO L226 Difference]: Without dead ends: 179707 [2020-10-14 00:56:24,740 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-14 00:56:24,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179707 states. [2020-10-14 00:56:29,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179707 to 174509. [2020-10-14 00:56:29,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174509 states. [2020-10-14 00:56:29,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174509 states to 174509 states and 223869 transitions. [2020-10-14 00:56:29,584 INFO L78 Accepts]: Start accepts. Automaton has 174509 states and 223869 transitions. Word has length 346 [2020-10-14 00:56:29,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:56:29,584 INFO L479 AbstractCegarLoop]: Abstraction has 174509 states and 223869 transitions. [2020-10-14 00:56:29,584 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 00:56:29,584 INFO L276 IsEmpty]: Start isEmpty. Operand 174509 states and 223869 transitions. [2020-10-14 00:56:29,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 350 [2020-10-14 00:56:29,848 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:56:29,848 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2020-10-14 00:56:29,848 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-14 00:56:29,849 INFO L427 AbstractCegarLoop]: === Iteration 18 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:56:29,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:56:29,849 INFO L82 PathProgramCache]: Analyzing trace with hash -1479620558, now seen corresponding path program 1 times [2020-10-14 00:56:29,849 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:56:29,849 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [492094657] [2020-10-14 00:56:29,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:56:29,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:56:29,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:30,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:30,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:31,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:34,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:56:34,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 367 [2020-10-14 00:56:34,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 00:56:34,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5054 [2020-10-14 00:56:34,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:56:34,954 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:56:34,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:56:34,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 00:56:34,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-14 00:56:34,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:56:35,120 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:56:35,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:56:35,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:56:35,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:35,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:56:35,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:56:35,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:56:35,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 00:56:35,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:56:35,132 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:56:35,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:56:35,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:56:35,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:56:35,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:56:35,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:56:35,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:56:35,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:35,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:56:35,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 00:56:35,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:56:35,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 00:56:35,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:56:35,229 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:56:35,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:56:35,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:56:35,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:56:35,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:56:35,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-14 00:56:35,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:56:35,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:35,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:56:35,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-14 00:56:35,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:56:35,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-14 00:56:35,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:56:35,361 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:56:35,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:56:35,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:56:35,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-14 00:56:35,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:56:35,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-14 00:56:35,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:56:35,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:35,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:56:35,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 00:56:35,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:56:35,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 00:56:35,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:56:35,460 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:56:35,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:56:35,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-14 00:56:35,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:56:35,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:56:35,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-10-14 00:56:35,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:56:35,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:35,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:56:35,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-14 00:56:35,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:56:35,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-14 00:56:35,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:56:35,493 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:56:35,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:56:35,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-14 00:56:35,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:56:35,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:56:35,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-10-14 00:56:35,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:56:35,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:35,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:56:35,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-14 00:56:35,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:56:35,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-14 00:56:35,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:56:35,554 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:56:35,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:56:35,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 61 [2020-10-14 00:56:35,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:56:35,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:56:38,978 INFO L134 CoverageAnalysis]: Checked inductivity of 411 backedges. 196 proven. 109 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2020-10-14 00:56:38,978 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [492094657] [2020-10-14 00:56:38,979 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:56:38,979 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 00:56:38,979 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694703195] [2020-10-14 00:56:38,979 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 00:56:38,979 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:56:38,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 00:56:38,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:56:38,980 INFO L87 Difference]: Start difference. First operand 174509 states and 223869 transitions. Second operand 7 states. [2020-10-14 00:56:39,125 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-14 00:56:40,366 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-10-14 00:56:45,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:56:45,455 INFO L93 Difference]: Finished difference Result 367993 states and 470662 transitions. [2020-10-14 00:56:45,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 00:56:45,455 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 349 [2020-10-14 00:56:45,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:56:46,044 INFO L225 Difference]: With dead ends: 367993 [2020-10-14 00:56:46,044 INFO L226 Difference]: Without dead ends: 193490 [2020-10-14 00:56:46,317 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 16 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 00:56:46,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193490 states. [2020-10-14 00:56:52,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193490 to 183553. [2020-10-14 00:56:52,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183553 states. [2020-10-14 00:56:53,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183553 states to 183553 states and 233533 transitions. [2020-10-14 00:56:53,236 INFO L78 Accepts]: Start accepts. Automaton has 183553 states and 233533 transitions. Word has length 349 [2020-10-14 00:56:53,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:56:53,236 INFO L479 AbstractCegarLoop]: Abstraction has 183553 states and 233533 transitions. [2020-10-14 00:56:53,236 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 00:56:53,237 INFO L276 IsEmpty]: Start isEmpty. Operand 183553 states and 233533 transitions. [2020-10-14 00:56:53,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2020-10-14 00:56:53,453 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:56:53,453 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 00:56:53,453 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-14 00:56:53,454 INFO L427 AbstractCegarLoop]: === Iteration 19 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:56:53,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:56:53,454 INFO L82 PathProgramCache]: Analyzing trace with hash -15883667, now seen corresponding path program 1 times [2020-10-14 00:56:53,454 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:56:53,455 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1957299121] [2020-10-14 00:56:53,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:56:53,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:56:53,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:53,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:55,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:58,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:56:58,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 358 [2020-10-14 00:56:58,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 00:56:58,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5080 [2020-10-14 00:56:58,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:56:58,602 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:56:58,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:56:58,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 88 [2020-10-14 00:56:58,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-14 00:56:58,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:56:58,775 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:56:58,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:56:58,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:56:58,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:58,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:56:58,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:56:58,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:56:58,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 00:56:58,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:56:58,787 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:56:58,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:56:58,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:56:58,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:56:58,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:56:58,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:56:58,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:56:58,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:58,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:56:58,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-14 00:56:58,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:56:58,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-14 00:56:58,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:56:58,959 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:56:58,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:56:58,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:56:58,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-14 00:56:58,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:56:59,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-14 00:56:59,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:56:59,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:59,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:56:59,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-14 00:56:59,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:56:59,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 195 [2020-10-14 00:56:59,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:56:59,262 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:56:59,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:56:59,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:56:59,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-14 00:56:59,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:56:59,519 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 259 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 00:56:59,520 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1957299121] [2020-10-14 00:56:59,520 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:56:59,520 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 00:56:59,520 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676574621] [2020-10-14 00:56:59,521 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 00:56:59,521 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:56:59,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 00:56:59,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 00:56:59,522 INFO L87 Difference]: Start difference. First operand 183553 states and 233533 transitions. Second operand 8 states. [2020-10-14 00:57:00,217 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2020-10-14 00:57:00,726 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-14 00:57:01,754 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2020-10-14 00:57:08,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:57:08,821 INFO L93 Difference]: Finished difference Result 382108 states and 521865 transitions. [2020-10-14 00:57:08,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 00:57:08,821 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 346 [2020-10-14 00:57:08,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:57:09,670 INFO L225 Difference]: With dead ends: 382108 [2020-10-14 00:57:09,670 INFO L226 Difference]: Without dead ends: 198561 [2020-10-14 00:57:09,918 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-14 00:57:10,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198561 states. [2020-10-14 00:57:14,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198561 to 191613. [2020-10-14 00:57:14,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191613 states. [2020-10-14 00:57:15,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191613 states to 191613 states and 241761 transitions. [2020-10-14 00:57:15,936 INFO L78 Accepts]: Start accepts. Automaton has 191613 states and 241761 transitions. Word has length 346 [2020-10-14 00:57:15,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:57:15,937 INFO L479 AbstractCegarLoop]: Abstraction has 191613 states and 241761 transitions. [2020-10-14 00:57:15,937 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 00:57:15,937 INFO L276 IsEmpty]: Start isEmpty. Operand 191613 states and 241761 transitions. [2020-10-14 00:57:16,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 358 [2020-10-14 00:57:16,155 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:57:16,155 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:57:16,156 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-14 00:57:16,156 INFO L427 AbstractCegarLoop]: === Iteration 20 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:57:16,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:57:16,156 INFO L82 PathProgramCache]: Analyzing trace with hash -1169393383, now seen corresponding path program 1 times [2020-10-14 00:57:16,156 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:57:16,156 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [470784404] [2020-10-14 00:57:16,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:57:16,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:57:16,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:57:16,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:57:16,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:57:16,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:57:17,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking...