/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem11_label04.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 20:55:06,903 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 20:55:06,906 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 20:55:06,945 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 20:55:06,945 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 20:55:06,953 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 20:55:06,954 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 20:55:06,958 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 20:55:06,960 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 20:55:06,963 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 20:55:06,964 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 20:55:06,965 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 20:55:06,965 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 20:55:06,968 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 20:55:06,970 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 20:55:06,972 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 20:55:06,973 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 20:55:06,974 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 20:55:06,975 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 20:55:06,983 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 20:55:06,986 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 20:55:06,987 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 20:55:06,987 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 20:55:06,988 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 20:55:07,000 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 20:55:07,000 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 20:55:07,001 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 20:55:07,008 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 20:55:07,008 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 20:55:07,009 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 20:55:07,009 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 20:55:07,010 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 20:55:07,014 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 20:55:07,014 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 20:55:07,015 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 20:55:07,015 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 20:55:07,016 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 20:55:07,016 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 20:55:07,016 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 20:55:07,017 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 20:55:07,017 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 20:55:07,018 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 20:55:07,039 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 20:55:07,040 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 20:55:07,041 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 20:55:07,041 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 20:55:07,041 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 20:55:07,042 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 20:55:07,042 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 20:55:07,042 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 20:55:07,042 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 20:55:07,042 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 20:55:07,042 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 20:55:07,043 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 20:55:07,043 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 20:55:07,043 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 20:55:07,043 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 20:55:07,043 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 20:55:07,044 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 20:55:07,044 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 20:55:07,044 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 20:55:07,044 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 20:55:07,044 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 20:55:07,045 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 20:55:07,045 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 20:55:07,045 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 20:55:07,045 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 20:55:07,045 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 20:55:07,045 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 20:55:07,046 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 20:55:07,046 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 20:55:07,046 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 20:55:07,384 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 20:55:07,399 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 20:55:07,404 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 20:55:07,406 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 20:55:07,407 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 20:55:07,407 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label04.c [2020-10-14 20:55:07,483 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7eef34744/50f4751773f641cfb326ec84630f1225/FLAG5f538d43f [2020-10-14 20:55:08,092 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 20:55:08,093 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem11_label04.c [2020-10-14 20:55:08,110 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7eef34744/50f4751773f641cfb326ec84630f1225/FLAG5f538d43f [2020-10-14 20:55:08,304 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7eef34744/50f4751773f641cfb326ec84630f1225 [2020-10-14 20:55:08,315 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 20:55:08,317 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 20:55:08,318 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 20:55:08,319 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 20:55:08,323 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 20:55:08,324 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 08:55:08" (1/1) ... [2020-10-14 20:55:08,328 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42dfe0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:55:08, skipping insertion in model container [2020-10-14 20:55:08,328 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 08:55:08" (1/1) ... [2020-10-14 20:55:08,337 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 20:55:08,385 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 20:55:09,257 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 20:55:09,267 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 20:55:09,564 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 20:55:09,589 INFO L208 MainTranslator]: Completed translation [2020-10-14 20:55:09,591 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:55:09 WrapperNode [2020-10-14 20:55:09,591 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 20:55:09,593 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 20:55:09,593 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 20:55:09,594 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 20:55:09,618 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:55:09" (1/1) ... [2020-10-14 20:55:09,620 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:55:09" (1/1) ... [2020-10-14 20:55:09,657 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:55:09" (1/1) ... [2020-10-14 20:55:09,658 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:55:09" (1/1) ... [2020-10-14 20:55:09,716 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:55:09" (1/1) ... [2020-10-14 20:55:09,730 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:55:09" (1/1) ... [2020-10-14 20:55:09,746 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:55:09" (1/1) ... [2020-10-14 20:55:09,758 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 20:55:09,759 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 20:55:09,759 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 20:55:09,759 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 20:55:09,761 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:55:09" (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 20:55:09,841 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 20:55:09,842 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 20:55:09,842 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 20:55:09,842 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 20:55:09,842 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 20:55:09,843 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 20:55:09,843 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 20:55:09,843 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 20:55:09,843 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 20:55:09,843 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 20:55:09,844 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 20:55:11,612 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 20:55:11,613 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 20:55:11,620 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 08:55:11 BoogieIcfgContainer [2020-10-14 20:55:11,620 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 20:55:11,621 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 20:55:11,622 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 20:55:11,625 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 20:55:11,625 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 08:55:08" (1/3) ... [2020-10-14 20:55:11,627 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d7ca375 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 08:55:11, skipping insertion in model container [2020-10-14 20:55:11,627 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:55:09" (2/3) ... [2020-10-14 20:55:11,627 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d7ca375 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 08:55:11, skipping insertion in model container [2020-10-14 20:55:11,627 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 08:55:11" (3/3) ... [2020-10-14 20:55:11,629 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem11_label04.c [2020-10-14 20:55:11,644 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 20:55:11,654 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 20:55:11,676 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 20:55:11,708 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 20:55:11,709 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 20:55:11,709 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 20:55:11,709 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 20:55:11,709 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 20:55:11,709 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 20:55:11,710 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 20:55:11,710 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 20:55:11,742 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states. [2020-10-14 20:55:11,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-14 20:55:11,754 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 20:55:11,755 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] [2020-10-14 20:55:11,756 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 20:55:11,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 20:55:11,765 INFO L82 PathProgramCache]: Analyzing trace with hash 1796892554, now seen corresponding path program 1 times [2020-10-14 20:55:11,779 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 20:55:11,780 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [117719838] [2020-10-14 20:55:11,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 20:55:12,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:55:12,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:55:12,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:55:12,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-14 20:55:12,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:55:12,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 559 [2020-10-14 20:55:12,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:55:12,584 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:55:12,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 20:55:12,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 20:55:12,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-14 20:55:12,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 20:55:12,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 20:55:12,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:55:12,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:55:12,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:55:12,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 20:55:12,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:55:12,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 20:55:12,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:55:12,765 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:55:12,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 20:55:12,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:55:12,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 20:55:12,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:55:12,804 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 20:55:12,806 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [117719838] [2020-10-14 20:55:12,808 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 20:55:12,809 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 20:55:12,810 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133160767] [2020-10-14 20:55:12,817 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 20:55:12,818 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 20:55:12,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 20:55:12,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 20:55:12,839 INFO L87 Difference]: Start difference. First operand 292 states. Second operand 5 states. [2020-10-14 20:55:16,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 20:55:16,195 INFO L93 Difference]: Finished difference Result 998 states and 1796 transitions. [2020-10-14 20:55:16,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 20:55:16,198 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 59 [2020-10-14 20:55:16,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 20:55:16,221 INFO L225 Difference]: With dead ends: 998 [2020-10-14 20:55:16,221 INFO L226 Difference]: Without dead ends: 638 [2020-10-14 20:55:16,232 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-14 20:55:16,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 638 states. [2020-10-14 20:55:16,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 638 to 620. [2020-10-14 20:55:16,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 620 states. [2020-10-14 20:55:16,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 620 states to 620 states and 938 transitions. [2020-10-14 20:55:16,346 INFO L78 Accepts]: Start accepts. Automaton has 620 states and 938 transitions. Word has length 59 [2020-10-14 20:55:16,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 20:55:16,347 INFO L479 AbstractCegarLoop]: Abstraction has 620 states and 938 transitions. [2020-10-14 20:55:16,347 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 20:55:16,347 INFO L276 IsEmpty]: Start isEmpty. Operand 620 states and 938 transitions. [2020-10-14 20:55:16,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-10-14 20:55:16,359 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 20:55:16,360 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:55:16,360 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 20:55:16,361 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 20:55:16,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 20:55:16,361 INFO L82 PathProgramCache]: Analyzing trace with hash -846394431, now seen corresponding path program 1 times [2020-10-14 20:55:16,361 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 20:55:16,362 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [899371553] [2020-10-14 20:55:16,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 20:55:16,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:55:16,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:55:16,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:55:16,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:55:18,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:55:18,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-14 20:55:18,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 20:55:18,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1809 [2020-10-14 20:55:18,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:55:18,244 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:55:18,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 20:55:18,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 20:55:18,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-14 20:55:18,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 20:55:18,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 20:55:18,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:55:18,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:55:18,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:55:18,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 20:55:18,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:55:18,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 20:55:18,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:55:18,359 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:55:18,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 20:55:18,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:55:18,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 20:55:18,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:55:18,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 20:55:18,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:55:18,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:55:18,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:55:18,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-14 20:55:18,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:55:18,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 158 [2020-10-14 20:55:18,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:55:18,566 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:55:18,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 20:55:18,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 20:55:18,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-14 20:55:18,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-14 20:55:18,657 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 20:55:18,658 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [899371553] [2020-10-14 20:55:18,658 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 20:55:18,658 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 20:55:18,659 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836087499] [2020-10-14 20:55:18,660 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 20:55:18,661 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 20:55:18,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 20:55:18,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 20:55:18,661 INFO L87 Difference]: Start difference. First operand 620 states and 938 transitions. Second operand 6 states. [2020-10-14 20:55:20,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 20:55:20,928 INFO L93 Difference]: Finished difference Result 1831 states and 2812 transitions. [2020-10-14 20:55:20,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 20:55:20,928 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 136 [2020-10-14 20:55:20,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 20:55:20,939 INFO L225 Difference]: With dead ends: 1831 [2020-10-14 20:55:20,939 INFO L226 Difference]: Without dead ends: 1217 [2020-10-14 20:55:20,942 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 20:55:20,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1217 states. [2020-10-14 20:55:21,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1217 to 1019. [2020-10-14 20:55:21,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1019 states. [2020-10-14 20:55:21,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1019 states to 1019 states and 1425 transitions. [2020-10-14 20:55:21,028 INFO L78 Accepts]: Start accepts. Automaton has 1019 states and 1425 transitions. Word has length 136 [2020-10-14 20:55:21,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 20:55:21,029 INFO L479 AbstractCegarLoop]: Abstraction has 1019 states and 1425 transitions. [2020-10-14 20:55:21,029 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 20:55:21,029 INFO L276 IsEmpty]: Start isEmpty. Operand 1019 states and 1425 transitions. [2020-10-14 20:55:21,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2020-10-14 20:55:21,036 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 20:55:21,037 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:55:21,037 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 20:55:21,037 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 20:55:21,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 20:55:21,038 INFO L82 PathProgramCache]: Analyzing trace with hash 1695593999, now seen corresponding path program 1 times [2020-10-14 20:55:21,038 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 20:55:21,038 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [641080930] [2020-10-14 20:55:21,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 20:55:21,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:55:21,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:55:21,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:55:21,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:55:22,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:55:22,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 213 [2020-10-14 20:55:22,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 20:55:22,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1610 [2020-10-14 20:55:22,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:55:22,712 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:55:22,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 20:55:22,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 20:55:22,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 207 [2020-10-14 20:55:22,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:55:22,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 20:55:22,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:55:22,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:55:22,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:55:22,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 20:55:22,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:55:22,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 20:55:22,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:55:22,812 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:55:22,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 20:55:22,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:55:22,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 20:55:22,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:55:22,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 20:55:22,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:55:22,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:55:22,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:55:23,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:55:23,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-14 20:55:23,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 20:55:23,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 430 [2020-10-14 20:55:23,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:55:23,292 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:55:23,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 20:55:23,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 20:55:23,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 145 [2020-10-14 20:55:23,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:55:23,418 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 20:55:23,419 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [641080930] [2020-10-14 20:55:23,419 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 20:55:23,419 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 20:55:23,420 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224642928] [2020-10-14 20:55:23,420 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 20:55:23,421 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 20:55:23,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 20:55:23,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 20:55:23,421 INFO L87 Difference]: Start difference. First operand 1019 states and 1425 transitions. Second operand 6 states. [2020-10-14 20:55:25,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 20:55:25,926 INFO L93 Difference]: Finished difference Result 3025 states and 4310 transitions. [2020-10-14 20:55:25,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 20:55:25,928 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 203 [2020-10-14 20:55:25,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 20:55:25,939 INFO L225 Difference]: With dead ends: 3025 [2020-10-14 20:55:25,939 INFO L226 Difference]: Without dead ends: 2012 [2020-10-14 20:55:25,943 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 20:55:25,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2012 states. [2020-10-14 20:55:25,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2012 to 2003. [2020-10-14 20:55:25,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2003 states. [2020-10-14 20:55:26,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2003 states to 2003 states and 2614 transitions. [2020-10-14 20:55:26,004 INFO L78 Accepts]: Start accepts. Automaton has 2003 states and 2614 transitions. Word has length 203 [2020-10-14 20:55:26,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 20:55:26,005 INFO L479 AbstractCegarLoop]: Abstraction has 2003 states and 2614 transitions. [2020-10-14 20:55:26,005 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 20:55:26,005 INFO L276 IsEmpty]: Start isEmpty. Operand 2003 states and 2614 transitions. [2020-10-14 20:55:26,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2020-10-14 20:55:26,010 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 20:55:26,010 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, 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] [2020-10-14 20:55:26,011 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 20:55:26,011 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 20:55:26,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 20:55:26,012 INFO L82 PathProgramCache]: Analyzing trace with hash -250844048, now seen corresponding path program 1 times [2020-10-14 20:55:26,012 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 20:55:26,012 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [72688172] [2020-10-14 20:55:26,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 20:55:26,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:55:26,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:55:26,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:55:27,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:55:28,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:55:28,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 259 [2020-10-14 20:55:28,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 20:55:28,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2344 [2020-10-14 20:55:28,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:55:28,421 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:55:28,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 20:55:28,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-14 20:55:28,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-14 20:55:28,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:55:28,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 20:55:28,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:55:28,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:55:28,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:55:28,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 20:55:28,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:55:28,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 20:55:28,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:55:28,503 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:55:28,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:55:28,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:55:28,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:55:28,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:55:28,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 20:55:28,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:55:28,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:55:28,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:55:28,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-14 20:55:28,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:55:28,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-10-14 20:55:28,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:55:28,687 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:55:28,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 20:55:28,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:55:28,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-14 20:55:28,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:55:28,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-14 20:55:28,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:55:28,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:55:28,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:55:28,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-14 20:55:28,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:55:28,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-14 20:55:28,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:55:28,867 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:55:28,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 20:55:28,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 20:55:28,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-14 20:55:28,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:55:28,965 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 173 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 20:55:28,966 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [72688172] [2020-10-14 20:55:28,966 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 20:55:28,968 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 20:55:28,968 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924671919] [2020-10-14 20:55:28,969 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 20:55:28,970 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 20:55:28,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 20:55:28,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 20:55:28,971 INFO L87 Difference]: Start difference. First operand 2003 states and 2614 transitions. Second operand 7 states. [2020-10-14 20:55:31,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 20:55:31,444 INFO L93 Difference]: Finished difference Result 4253 states and 5775 transitions. [2020-10-14 20:55:31,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 20:55:31,445 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 247 [2020-10-14 20:55:31,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 20:55:31,458 INFO L225 Difference]: With dead ends: 4253 [2020-10-14 20:55:31,458 INFO L226 Difference]: Without dead ends: 2634 [2020-10-14 20:55:31,463 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 20:55:31,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2634 states. [2020-10-14 20:55:31,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2634 to 2622. [2020-10-14 20:55:31,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2622 states. [2020-10-14 20:55:31,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2622 states to 2622 states and 3426 transitions. [2020-10-14 20:55:31,533 INFO L78 Accepts]: Start accepts. Automaton has 2622 states and 3426 transitions. Word has length 247 [2020-10-14 20:55:31,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 20:55:31,534 INFO L479 AbstractCegarLoop]: Abstraction has 2622 states and 3426 transitions. [2020-10-14 20:55:31,534 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 20:55:31,534 INFO L276 IsEmpty]: Start isEmpty. Operand 2622 states and 3426 transitions. [2020-10-14 20:55:31,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2020-10-14 20:55:31,539 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 20:55:31,539 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, 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] [2020-10-14 20:55:31,540 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 20:55:31,540 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 20:55:31,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 20:55:31,540 INFO L82 PathProgramCache]: Analyzing trace with hash -3593581, now seen corresponding path program 1 times [2020-10-14 20:55:31,540 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 20:55:31,541 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1884979536] [2020-10-14 20:55:31,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 20:55:31,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:55:31,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:55:31,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:55:32,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:55:34,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:55:34,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 260 [2020-10-14 20:55:34,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 20:55:34,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2554 [2020-10-14 20:55:34,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:55:34,158 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:55:34,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 20:55:34,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 20:55:34,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 209 [2020-10-14 20:55:34,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:55:34,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 20:55:34,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:55:34,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:55:34,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:55:34,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 20:55:34,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:55:34,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 20:55:34,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:55:34,285 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:55:34,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 20:55:34,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:55:34,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 20:55:34,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:55:34,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 20:55:34,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:55:34,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:55:34,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:55:34,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-14 20:55:34,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:55:34,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 171 [2020-10-14 20:55:34,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:55:34,498 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:55:34,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 20:55:34,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 20:55:34,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-14 20:55:34,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:55:34,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-14 20:55:34,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:55:34,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:55:34,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:55:34,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 20:55:34,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:55:34,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 192 [2020-10-14 20:55:34,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:55:34,787 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:55:34,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 20:55:34,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 20:55:34,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 20:55:34,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:55:34,951 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 90 proven. 17 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2020-10-14 20:55:34,952 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1884979536] [2020-10-14 20:55:34,952 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 20:55:34,952 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 20:55:34,953 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622358261] [2020-10-14 20:55:34,954 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 20:55:34,954 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 20:55:34,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 20:55:34,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 20:55:34,955 INFO L87 Difference]: Start difference. First operand 2622 states and 3426 transitions. Second operand 8 states. [2020-10-14 20:55:36,845 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 54 [2020-10-14 20:55:38,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 20:55:38,195 INFO L93 Difference]: Finished difference Result 6103 states and 8393 transitions. [2020-10-14 20:55:38,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 20:55:38,196 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 248 [2020-10-14 20:55:38,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 20:55:38,215 INFO L225 Difference]: With dead ends: 6103 [2020-10-14 20:55:38,215 INFO L226 Difference]: Without dead ends: 3855 [2020-10-14 20:55:38,224 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-10-14 20:55:38,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3855 states. [2020-10-14 20:55:38,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3855 to 3824. [2020-10-14 20:55:38,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3824 states. [2020-10-14 20:55:38,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3824 states to 3824 states and 4927 transitions. [2020-10-14 20:55:38,335 INFO L78 Accepts]: Start accepts. Automaton has 3824 states and 4927 transitions. Word has length 248 [2020-10-14 20:55:38,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 20:55:38,335 INFO L479 AbstractCegarLoop]: Abstraction has 3824 states and 4927 transitions. [2020-10-14 20:55:38,336 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 20:55:38,336 INFO L276 IsEmpty]: Start isEmpty. Operand 3824 states and 4927 transitions. [2020-10-14 20:55:38,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2020-10-14 20:55:38,341 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 20:55:38,341 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, 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] [2020-10-14 20:55:38,342 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 20:55:38,342 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 20:55:38,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 20:55:38,342 INFO L82 PathProgramCache]: Analyzing trace with hash 604587609, now seen corresponding path program 1 times [2020-10-14 20:55:38,343 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 20:55:38,343 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1035454130] [2020-10-14 20:55:38,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 20:55:38,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:55:38,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:55:38,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:55:38,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:55:40,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:55:40,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 271 [2020-10-14 20:55:40,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 20:55:40,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1900 [2020-10-14 20:55:40,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:55:40,300 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:55:40,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 20:55:40,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-14 20:55:40,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-14 20:55:40,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:55:40,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 20:55:40,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:55:40,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:55:40,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:55:40,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 20:55:40,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:55:40,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 20:55:40,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:55:40,414 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:55:40,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:55:40,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:55:40,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:55:40,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:55:40,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 20:55:40,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:55:40,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:55:40,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:55:40,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-14 20:55:40,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:55:40,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-14 20:55:40,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:55:40,586 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:55:40,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 20:55:40,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:55:40,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-14 20:55:40,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:55:40,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-14 20:55:40,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:55:40,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:55:40,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:55:40,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 20:55:40,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:55:40,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-14 20:55:40,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:55:40,735 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:55:40,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 20:55:40,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 20:55:40,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 20:55:40,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:55:40,849 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 170 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 20:55:40,850 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1035454130] [2020-10-14 20:55:40,851 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 20:55:40,851 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 20:55:40,851 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576883693] [2020-10-14 20:55:40,852 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 20:55:40,852 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 20:55:40,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 20:55:40,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 20:55:40,852 INFO L87 Difference]: Start difference. First operand 3824 states and 4927 transitions. Second operand 7 states. [2020-10-14 20:55:44,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 20:55:44,395 INFO L93 Difference]: Finished difference Result 9457 states and 12718 transitions. [2020-10-14 20:55:44,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 20:55:44,396 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 259 [2020-10-14 20:55:44,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 20:55:44,425 INFO L225 Difference]: With dead ends: 9457 [2020-10-14 20:55:44,425 INFO L226 Difference]: Without dead ends: 6017 [2020-10-14 20:55:44,438 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 20:55:44,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6017 states. [2020-10-14 20:55:44,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6017 to 5609. [2020-10-14 20:55:44,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5609 states. [2020-10-14 20:55:44,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5609 states to 5609 states and 7118 transitions. [2020-10-14 20:55:44,603 INFO L78 Accepts]: Start accepts. Automaton has 5609 states and 7118 transitions. Word has length 259 [2020-10-14 20:55:44,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 20:55:44,604 INFO L479 AbstractCegarLoop]: Abstraction has 5609 states and 7118 transitions. [2020-10-14 20:55:44,604 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 20:55:44,604 INFO L276 IsEmpty]: Start isEmpty. Operand 5609 states and 7118 transitions. [2020-10-14 20:55:44,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2020-10-14 20:55:44,619 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 20:55:44,619 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2020-10-14 20:55:44,620 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 20:55:44,620 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 20:55:44,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 20:55:44,621 INFO L82 PathProgramCache]: Analyzing trace with hash 597581079, now seen corresponding path program 1 times [2020-10-14 20:55:44,621 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 20:55:44,621 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1053873466] [2020-10-14 20:55:44,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 20:55:44,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:55:44,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:55:44,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:55:46,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:55:48,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:55:48,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 348 [2020-10-14 20:55:48,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 20:55:48,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3445 [2020-10-14 20:55:48,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:55:48,129 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:55:48,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 20:55:48,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 214 [2020-10-14 20:55:48,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 20:55:48,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:55:48,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 20:55:48,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:55:48,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:55:48,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:55:48,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 20:55:48,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:55:48,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 20:55:48,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:55:48,225 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:55:48,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:55:48,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:55:48,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:55:48,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:55:48,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 20:55:48,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:55:48,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:55:48,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:55:48,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-14 20:55:48,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:55:48,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-14 20:55:48,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:55:48,286 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:55:48,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:55:48,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:55:48,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:55:48,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:55:48,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-14 20:55:48,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:55:48,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:55:48,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:55:48,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 20:55:48,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:55:48,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-14 20:55:48,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:55:48,421 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:55:48,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 20:55:48,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:55:48,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 20:55:48,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:55:48,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2020-10-14 20:55:48,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:55:48,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:55:48,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:55:48,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 20:55:48,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:55:48,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-14 20:55:48,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:55:48,582 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:55:48,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 20:55:48,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 20:55:48,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 20:55:48,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:55:48,856 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 301 proven. 2 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2020-10-14 20:55:48,857 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1053873466] [2020-10-14 20:55:48,857 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 20:55:48,857 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 20:55:48,858 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194447012] [2020-10-14 20:55:48,858 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 20:55:48,859 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 20:55:48,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 20:55:48,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 20:55:48,865 INFO L87 Difference]: Start difference. First operand 5609 states and 7118 transitions. Second operand 7 states. [2020-10-14 20:55:51,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 20:55:51,572 INFO L93 Difference]: Finished difference Result 10308 states and 13356 transitions. [2020-10-14 20:55:51,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 20:55:51,572 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 334 [2020-10-14 20:55:51,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 20:55:51,599 INFO L225 Difference]: With dead ends: 10308 [2020-10-14 20:55:51,599 INFO L226 Difference]: Without dead ends: 6252 [2020-10-14 20:55:51,611 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-14 20:55:51,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6252 states. [2020-10-14 20:55:51,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6252 to 6210. [2020-10-14 20:55:51,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6210 states. [2020-10-14 20:55:51,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6210 states to 6210 states and 7857 transitions. [2020-10-14 20:55:51,782 INFO L78 Accepts]: Start accepts. Automaton has 6210 states and 7857 transitions. Word has length 334 [2020-10-14 20:55:51,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 20:55:51,783 INFO L479 AbstractCegarLoop]: Abstraction has 6210 states and 7857 transitions. [2020-10-14 20:55:51,783 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 20:55:51,783 INFO L276 IsEmpty]: Start isEmpty. Operand 6210 states and 7857 transitions. [2020-10-14 20:55:51,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 344 [2020-10-14 20:55:51,797 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 20:55:51,798 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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 20:55:51,799 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 20:55:51,799 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 20:55:51,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 20:55:51,800 INFO L82 PathProgramCache]: Analyzing trace with hash -1107551917, now seen corresponding path program 1 times [2020-10-14 20:55:51,800 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 20:55:51,800 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1396865910] [2020-10-14 20:55:51,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 20:55:51,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:55:51,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:55:51,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:55:52,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:55:52,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:55:54,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:55:54,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:55:54,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:55:56,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:55:56,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 357 [2020-10-14 20:55:56,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 20:55:56,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 20:55:56,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:55:56,883 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:55:56,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 20:55:56,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 20:55:56,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 306 [2020-10-14 20:55:56,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:55:57,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 20:55:57,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:55:57,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:55:57,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:55:57,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 20:55:57,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:55:57,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 20:55:57,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:55:57,022 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:55:57,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 20:55:57,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:55:57,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 20:55:57,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:55:57,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 20:55:57,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:55:57,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:55:57,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:55:57,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:55:57,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:55:57,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:55:57,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-14 20:55:57,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 20:55:57,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 532 [2020-10-14 20:55:57,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:55:57,620 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:55:57,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 20:55:57,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:55:57,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-14 20:55:57,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:55:57,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-14 20:55:57,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:55:57,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:55:57,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:55:57,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:55:57,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-14 20:55:57,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 20:55:57,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-10-14 20:55:57,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:55:57,919 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:55:57,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 20:55:57,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:55:57,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-14 20:55:57,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:55:57,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2020-10-14 20:55:57,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:55:57,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:55:58,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:55:58,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 20:55:58,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:55:58,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-10-14 20:55:58,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:55:58,131 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:55:58,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 20:55:58,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 20:55:58,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 20:55:58,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:55:58,347 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 284 proven. 10 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2020-10-14 20:55:58,348 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1396865910] [2020-10-14 20:55:58,348 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 20:55:58,348 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 20:55:58,349 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173139686] [2020-10-14 20:55:58,350 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 20:55:58,350 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 20:55:58,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 20:55:58,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-10-14 20:55:58,350 INFO L87 Difference]: Start difference. First operand 6210 states and 7857 transitions. Second operand 8 states. [2020-10-14 20:56:01,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 20:56:01,569 INFO L93 Difference]: Finished difference Result 13855 states and 18816 transitions. [2020-10-14 20:56:01,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 20:56:01,570 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 343 [2020-10-14 20:56:01,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 20:56:01,613 INFO L225 Difference]: With dead ends: 13855 [2020-10-14 20:56:01,613 INFO L226 Difference]: Without dead ends: 8000 [2020-10-14 20:56:01,632 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2020-10-14 20:56:01,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8000 states. [2020-10-14 20:56:01,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8000 to 7731. [2020-10-14 20:56:01,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7731 states. [2020-10-14 20:56:01,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7731 states to 7731 states and 9624 transitions. [2020-10-14 20:56:01,861 INFO L78 Accepts]: Start accepts. Automaton has 7731 states and 9624 transitions. Word has length 343 [2020-10-14 20:56:01,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 20:56:01,862 INFO L479 AbstractCegarLoop]: Abstraction has 7731 states and 9624 transitions. [2020-10-14 20:56:01,863 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 20:56:01,863 INFO L276 IsEmpty]: Start isEmpty. Operand 7731 states and 9624 transitions. [2020-10-14 20:56:01,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 350 [2020-10-14 20:56:01,882 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 20:56:01,883 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 20:56:01,883 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 20:56:01,884 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 20:56:01,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 20:56:01,885 INFO L82 PathProgramCache]: Analyzing trace with hash -1788412139, now seen corresponding path program 1 times [2020-10-14 20:56:01,885 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 20:56:01,885 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [516228183] [2020-10-14 20:56:01,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 20:56:02,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:56:02,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:02,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:02,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:02,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:03,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:56:03,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 361 [2020-10-14 20:56:03,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 20:56:03,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1020 [2020-10-14 20:56:03,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:56:03,066 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:56:03,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 20:56:03,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 20:56:03,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 297 [2020-10-14 20:56:03,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:56:03,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 20:56:03,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:56:03,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:03,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:56:03,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 20:56:03,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:56:03,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 20:56:03,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:56:03,148 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:56:03,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 20:56:03,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:56:03,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 20:56:03,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:56:03,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 20:56:03,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:56:03,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:03,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:03,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:56:03,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-14 20:56:03,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 20:56:03,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-14 20:56:03,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:56:03,301 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:56:03,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 20:56:03,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:56:03,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-10-14 20:56:03,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:56:03,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-14 20:56:03,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:56:03,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:03,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:03,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:56:03,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-14 20:56:03,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 20:56:03,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-10-14 20:56:03,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:56:03,496 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:56:03,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 20:56:03,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 153 [2020-10-14 20:56:03,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 20:56:03,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:56:03,589 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 107 proven. 0 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2020-10-14 20:56:03,589 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [516228183] [2020-10-14 20:56:03,589 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 20:56:03,590 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 20:56:03,590 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819309469] [2020-10-14 20:56:03,591 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 20:56:03,591 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 20:56:03,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 20:56:03,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-14 20:56:03,592 INFO L87 Difference]: Start difference. First operand 7731 states and 9624 transitions. Second operand 6 states. [2020-10-14 20:56:05,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 20:56:05,275 INFO L93 Difference]: Finished difference Result 13908 states and 17469 transitions. [2020-10-14 20:56:05,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 20:56:05,276 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 349 [2020-10-14 20:56:05,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 20:56:05,307 INFO L225 Difference]: With dead ends: 13908 [2020-10-14 20:56:05,307 INFO L226 Difference]: Without dead ends: 7729 [2020-10-14 20:56:05,322 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 20:56:05,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7729 states. [2020-10-14 20:56:05,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7729 to 7722. [2020-10-14 20:56:05,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7722 states. [2020-10-14 20:56:05,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7722 states to 7722 states and 9605 transitions. [2020-10-14 20:56:05,490 INFO L78 Accepts]: Start accepts. Automaton has 7722 states and 9605 transitions. Word has length 349 [2020-10-14 20:56:05,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 20:56:05,491 INFO L479 AbstractCegarLoop]: Abstraction has 7722 states and 9605 transitions. [2020-10-14 20:56:05,491 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 20:56:05,492 INFO L276 IsEmpty]: Start isEmpty. Operand 7722 states and 9605 transitions. [2020-10-14 20:56:05,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 371 [2020-10-14 20:56:05,509 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 20:56:05,510 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 20:56:05,510 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 20:56:05,510 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 20:56:05,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 20:56:05,511 INFO L82 PathProgramCache]: Analyzing trace with hash -939771298, now seen corresponding path program 1 times [2020-10-14 20:56:05,511 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 20:56:05,512 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [571338640] [2020-10-14 20:56:05,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 20:56:05,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:56:05,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:05,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:06,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:08,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:56:08,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 384 [2020-10-14 20:56:08,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 20:56:08,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2979 [2020-10-14 20:56:08,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:56:08,558 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:56:08,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 20:56:08,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-14 20:56:08,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-14 20:56:08,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:56:08,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 20:56:08,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:56:08,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:08,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:56:08,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 20:56:08,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:56:08,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 20:56:08,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:56:08,642 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:56:08,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:56:08,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:56:08,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:56:08,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:56:08,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 20:56:08,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:56:08,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:08,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:56:08,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-14 20:56:08,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:56:08,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-14 20:56:08,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:56:08,763 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:56:08,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 20:56:08,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:56:08,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-14 20:56:08,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:56:08,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-14 20:56:08,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:56:08,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:08,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:56:08,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-14 20:56:08,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:56:08,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-14 20:56:08,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:56:08,919 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:56:08,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 20:56:08,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 20:56:08,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-14 20:56:08,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:56:08,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-10-14 20:56:08,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:56:08,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:08,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:56:08,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 20:56:08,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:56:08,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 20:56:08,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:56:08,994 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:56:08,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:56:08,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-14 20:56:08,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:56:08,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:56:09,129 INFO L134 CoverageAnalysis]: Checked inductivity of 409 backedges. 264 proven. 72 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-10-14 20:56:09,130 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [571338640] [2020-10-14 20:56:09,130 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 20:56:09,130 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 20:56:09,130 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699253450] [2020-10-14 20:56:09,131 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 20:56:09,131 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 20:56:09,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 20:56:09,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 20:56:09,132 INFO L87 Difference]: Start difference. First operand 7722 states and 9605 transitions. Second operand 7 states. [2020-10-14 20:56:11,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 20:56:11,775 INFO L93 Difference]: Finished difference Result 19475 states and 24668 transitions. [2020-10-14 20:56:11,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 20:56:11,777 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 370 [2020-10-14 20:56:11,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 20:56:11,826 INFO L225 Difference]: With dead ends: 19475 [2020-10-14 20:56:11,827 INFO L226 Difference]: Without dead ends: 12143 [2020-10-14 20:56:11,846 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 20:56:11,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12143 states. [2020-10-14 20:56:12,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12143 to 12122. [2020-10-14 20:56:12,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12122 states. [2020-10-14 20:56:12,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12122 states to 12122 states and 15162 transitions. [2020-10-14 20:56:12,113 INFO L78 Accepts]: Start accepts. Automaton has 12122 states and 15162 transitions. Word has length 370 [2020-10-14 20:56:12,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 20:56:12,114 INFO L479 AbstractCegarLoop]: Abstraction has 12122 states and 15162 transitions. [2020-10-14 20:56:12,114 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 20:56:12,114 INFO L276 IsEmpty]: Start isEmpty. Operand 12122 states and 15162 transitions. [2020-10-14 20:56:12,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 374 [2020-10-14 20:56:12,134 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 20:56:12,135 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 20:56:12,135 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 20:56:12,135 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 20:56:12,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 20:56:12,136 INFO L82 PathProgramCache]: Analyzing trace with hash 416779489, now seen corresponding path program 1 times [2020-10-14 20:56:12,136 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 20:56:12,136 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1645949527] [2020-10-14 20:56:12,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 20:56:12,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:56:12,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:12,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:56:12,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 385 [2020-10-14 20:56:12,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:56:12,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 536 [2020-10-14 20:56:12,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:56:12,751 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:56:12,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 20:56:12,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 325 [2020-10-14 20:56:12,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-14 20:56:12,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:56:12,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 20:56:12,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:56:12,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:12,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:56:12,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 20:56:12,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:56:12,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 20:56:12,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:56:12,856 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:56:12,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:56:12,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:56:12,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:56:12,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:56:12,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 20:56:12,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:56:12,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:12,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:56:12,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-14 20:56:12,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:56:12,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-14 20:56:12,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:56:12,912 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:56:12,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:56:12,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:56:12,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:56:12,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:56:12,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-14 20:56:12,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:56:13,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:13,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:56:13,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-10-14 20:56:13,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:56:13,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-14 20:56:13,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:56:13,089 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:56:13,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 20:56:13,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:56:13,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 177 [2020-10-14 20:56:13,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:56:13,272 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 105 proven. 2 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2020-10-14 20:56:13,272 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1645949527] [2020-10-14 20:56:13,273 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 20:56:13,273 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 20:56:13,273 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915392089] [2020-10-14 20:56:13,274 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 20:56:13,274 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 20:56:13,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 20:56:13,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 20:56:13,274 INFO L87 Difference]: Start difference. First operand 12122 states and 15162 transitions. Second operand 5 states. [2020-10-14 20:56:15,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 20:56:15,431 INFO L93 Difference]: Finished difference Result 26201 states and 32713 transitions. [2020-10-14 20:56:15,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 20:56:15,432 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 373 [2020-10-14 20:56:15,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 20:56:15,480 INFO L225 Difference]: With dead ends: 26201 [2020-10-14 20:56:15,480 INFO L226 Difference]: Without dead ends: 16585 [2020-10-14 20:56:15,503 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 20:56:15,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16585 states. [2020-10-14 20:56:15,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16585 to 16564. [2020-10-14 20:56:15,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16564 states. [2020-10-14 20:56:15,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16564 states to 16564 states and 20460 transitions. [2020-10-14 20:56:15,818 INFO L78 Accepts]: Start accepts. Automaton has 16564 states and 20460 transitions. Word has length 373 [2020-10-14 20:56:15,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 20:56:15,819 INFO L479 AbstractCegarLoop]: Abstraction has 16564 states and 20460 transitions. [2020-10-14 20:56:15,820 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 20:56:15,820 INFO L276 IsEmpty]: Start isEmpty. Operand 16564 states and 20460 transitions. [2020-10-14 20:56:15,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 383 [2020-10-14 20:56:15,838 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 20:56:15,838 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2020-10-14 20:56:15,838 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 20:56:15,839 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 20:56:15,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 20:56:15,839 INFO L82 PathProgramCache]: Analyzing trace with hash -1009611387, now seen corresponding path program 1 times [2020-10-14 20:56:15,839 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 20:56:15,840 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1472266552] [2020-10-14 20:56:15,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 20:56:15,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:56:15,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:16,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:16,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:17,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:18,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:56:18,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 396 [2020-10-14 20:56:18,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 20:56:18,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2592 [2020-10-14 20:56:18,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:56:18,492 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:56:18,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 20:56:18,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 20:56:18,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 333 [2020-10-14 20:56:18,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:56:18,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 20:56:18,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:56:18,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:18,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:56:18,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 20:56:18,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:56:18,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 20:56:18,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:56:18,574 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:56:18,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 20:56:18,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:56:18,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 20:56:18,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:56:18,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 20:56:18,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:56:18,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:18,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:56:18,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-14 20:56:18,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:56:18,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-14 20:56:18,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:56:18,702 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:56:18,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 20:56:18,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 20:56:18,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-14 20:56:18,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:56:18,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-14 20:56:18,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:56:18,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:19,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:56:19,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 20:56:19,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:56:19,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-10-14 20:56:19,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:56:19,014 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:56:19,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 20:56:19,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 20:56:19,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-14 20:56:19,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:56:19,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2020-10-14 20:56:19,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:56:19,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:19,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:56:19,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-14 20:56:19,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:56:19,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-14 20:56:19,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:56:19,197 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:56:19,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 20:56:19,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 20:56:19,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-10-14 20:56:19,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:56:19,442 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 346 proven. 92 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-14 20:56:19,443 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1472266552] [2020-10-14 20:56:19,443 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 20:56:19,443 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 20:56:19,444 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302942759] [2020-10-14 20:56:19,444 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 20:56:19,444 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 20:56:19,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 20:56:19,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-10-14 20:56:19,445 INFO L87 Difference]: Start difference. First operand 16564 states and 20460 transitions. Second operand 11 states. [2020-10-14 20:56:23,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 20:56:23,961 INFO L93 Difference]: Finished difference Result 35054 states and 46776 transitions. [2020-10-14 20:56:23,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-14 20:56:23,962 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 382 [2020-10-14 20:56:23,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 20:56:24,026 INFO L225 Difference]: With dead ends: 35054 [2020-10-14 20:56:24,026 INFO L226 Difference]: Without dead ends: 20210 [2020-10-14 20:56:24,052 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=116, Invalid=346, Unknown=0, NotChecked=0, Total=462 [2020-10-14 20:56:24,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20210 states. [2020-10-14 20:56:24,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20210 to 19484. [2020-10-14 20:56:24,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19484 states. [2020-10-14 20:56:24,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19484 states to 19484 states and 23996 transitions. [2020-10-14 20:56:24,478 INFO L78 Accepts]: Start accepts. Automaton has 19484 states and 23996 transitions. Word has length 382 [2020-10-14 20:56:24,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 20:56:24,479 INFO L479 AbstractCegarLoop]: Abstraction has 19484 states and 23996 transitions. [2020-10-14 20:56:24,479 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 20:56:24,479 INFO L276 IsEmpty]: Start isEmpty. Operand 19484 states and 23996 transitions. [2020-10-14 20:56:24,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 457 [2020-10-14 20:56:24,500 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 20:56:24,501 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 20:56:24,501 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 20:56:24,501 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 20:56:24,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 20:56:24,502 INFO L82 PathProgramCache]: Analyzing trace with hash 95982177, now seen corresponding path program 1 times [2020-10-14 20:56:24,502 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 20:56:24,502 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [725893268] [2020-10-14 20:56:24,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 20:56:24,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:56:24,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:24,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:24,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:25,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:29,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:29,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:56:29,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 472 [2020-10-14 20:56:29,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 20:56:29,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-14 20:56:29,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:56:29,613 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:56:29,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 20:56:29,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-14 20:56:29,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-14 20:56:29,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:56:29,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 20:56:29,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:56:29,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:29,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:56:29,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 20:56:29,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:56:29,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 20:56:29,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:56:29,680 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:56:29,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:56:29,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:56:29,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:56:29,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:56:29,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 20:56:29,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:56:29,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:29,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:56:29,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-14 20:56:29,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:56:29,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-14 20:56:29,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:56:29,768 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:56:29,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 20:56:29,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:56:29,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-14 20:56:29,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:56:29,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-14 20:56:29,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:56:29,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:29,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:56:29,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 20:56:29,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:56:29,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-14 20:56:29,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:56:29,864 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:56:29,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 20:56:29,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 20:56:29,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-14 20:56:29,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:56:29,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2020-10-14 20:56:29,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:56:29,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:29,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:56:29,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 20:56:29,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:56:29,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-14 20:56:29,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:56:29,962 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:56:29,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:56:29,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-14 20:56:29,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:56:29,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:56:29,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2020-10-14 20:56:29,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:56:30,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:30,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:56:30,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-14 20:56:30,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:56:30,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-14 20:56:30,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:56:30,044 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:56:30,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:56:30,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 119 [2020-10-14 20:56:30,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:56:30,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:56:30,290 INFO L134 CoverageAnalysis]: Checked inductivity of 718 backedges. 287 proven. 144 refuted. 0 times theorem prover too weak. 287 trivial. 0 not checked. [2020-10-14 20:56:30,290 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [725893268] [2020-10-14 20:56:30,291 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 20:56:30,291 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 20:56:30,291 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179394985] [2020-10-14 20:56:30,291 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 20:56:30,292 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 20:56:30,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 20:56:30,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 20:56:30,292 INFO L87 Difference]: Start difference. First operand 19484 states and 23996 transitions. Second operand 7 states. [2020-10-14 20:56:32,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 20:56:32,975 INFO L93 Difference]: Finished difference Result 39744 states and 49043 transitions. [2020-10-14 20:56:32,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 20:56:32,976 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 456 [2020-10-14 20:56:32,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 20:56:33,027 INFO L225 Difference]: With dead ends: 39744 [2020-10-14 20:56:33,027 INFO L226 Difference]: Without dead ends: 20650 [2020-10-14 20:56:33,055 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-14 20:56:33,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20650 states. [2020-10-14 20:56:33,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20650 to 20426. [2020-10-14 20:56:33,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20426 states. [2020-10-14 20:56:33,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20426 states to 20426 states and 25011 transitions. [2020-10-14 20:56:33,389 INFO L78 Accepts]: Start accepts. Automaton has 20426 states and 25011 transitions. Word has length 456 [2020-10-14 20:56:33,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 20:56:33,390 INFO L479 AbstractCegarLoop]: Abstraction has 20426 states and 25011 transitions. [2020-10-14 20:56:33,390 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 20:56:33,390 INFO L276 IsEmpty]: Start isEmpty. Operand 20426 states and 25011 transitions. [2020-10-14 20:56:33,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 465 [2020-10-14 20:56:33,411 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 20:56:33,411 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 20:56:33,412 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 20:56:33,412 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 20:56:33,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 20:56:33,412 INFO L82 PathProgramCache]: Analyzing trace with hash 205114731, now seen corresponding path program 1 times [2020-10-14 20:56:33,413 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 20:56:33,413 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [611913088] [2020-10-14 20:56:33,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 20:56:33,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:56:33,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:33,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:34,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:35,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:56:35,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 480 [2020-10-14 20:56:35,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 20:56:35,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2486 [2020-10-14 20:56:35,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:56:35,992 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:56:35,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 20:56:35,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 259 [2020-10-14 20:56:35,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 175 [2020-10-14 20:56:35,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:56:36,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 20:56:36,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:56:36,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:36,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:56:36,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 20:56:36,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:56:36,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 20:56:36,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:56:36,146 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:56:36,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:56:36,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:56:36,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:56:36,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:56:36,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 20:56:36,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:56:36,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:36,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:56:36,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-14 20:56:36,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:56:36,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-14 20:56:36,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:56:36,196 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:56:36,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:56:36,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:56:36,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:56:36,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:56:36,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-14 20:56:36,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:56:36,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:36,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:56:36,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-14 20:56:36,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:56:36,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-14 20:56:36,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:56:36,297 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:56:36,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 20:56:36,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:56:36,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-14 20:56:36,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:56:36,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-14 20:56:36,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:56:36,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:36,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:56:36,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-14 20:56:36,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:56:36,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-14 20:56:36,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:56:36,391 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:56:36,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 20:56:36,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 20:56:36,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-14 20:56:36,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:56:36,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2020-10-14 20:56:36,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:56:36,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:36,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:56:36,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 20:56:36,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:56:36,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-14 20:56:36,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:56:36,526 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:56:36,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 20:56:36,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 20:56:36,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 20:56:36,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:56:36,699 INFO L134 CoverageAnalysis]: Checked inductivity of 713 backedges. 509 proven. 16 refuted. 0 times theorem prover too weak. 188 trivial. 0 not checked. [2020-10-14 20:56:36,699 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [611913088] [2020-10-14 20:56:36,699 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 20:56:36,699 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 20:56:36,700 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324989193] [2020-10-14 20:56:36,700 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 20:56:36,700 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 20:56:36,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 20:56:36,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 20:56:36,701 INFO L87 Difference]: Start difference. First operand 20426 states and 25011 transitions. Second operand 8 states. [2020-10-14 20:56:40,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 20:56:40,328 INFO L93 Difference]: Finished difference Result 42057 states and 53577 transitions. [2020-10-14 20:56:40,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 20:56:40,329 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 464 [2020-10-14 20:56:40,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 20:56:40,409 INFO L225 Difference]: With dead ends: 42057 [2020-10-14 20:56:40,409 INFO L226 Difference]: Without dead ends: 24691 [2020-10-14 20:56:40,441 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-14 20:56:40,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24691 states. [2020-10-14 20:56:40,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24691 to 24436. [2020-10-14 20:56:40,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24436 states. [2020-10-14 20:56:40,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24436 states to 24436 states and 30542 transitions. [2020-10-14 20:56:40,913 INFO L78 Accepts]: Start accepts. Automaton has 24436 states and 30542 transitions. Word has length 464 [2020-10-14 20:56:40,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 20:56:40,914 INFO L479 AbstractCegarLoop]: Abstraction has 24436 states and 30542 transitions. [2020-10-14 20:56:40,914 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 20:56:40,914 INFO L276 IsEmpty]: Start isEmpty. Operand 24436 states and 30542 transitions. [2020-10-14 20:56:40,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 467 [2020-10-14 20:56:40,929 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 20:56:40,929 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 20:56:40,930 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 20:56:40,930 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 20:56:40,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 20:56:40,930 INFO L82 PathProgramCache]: Analyzing trace with hash -434226707, now seen corresponding path program 1 times [2020-10-14 20:56:40,930 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 20:56:40,931 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1907218992] [2020-10-14 20:56:40,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 20:56:40,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:56:41,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:41,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:41,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:43,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:44,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:56:44,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 482 [2020-10-14 20:56:44,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 20:56:44,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3227 [2020-10-14 20:56:44,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:56:44,228 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:56:44,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 20:56:44,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 212 [2020-10-14 20:56:44,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-14 20:56:44,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:56:44,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 20:56:44,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:56:44,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:44,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:56:44,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 20:56:44,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:56:44,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 20:56:44,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:56:44,303 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:56:44,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:56:44,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:56:44,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:56:44,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:56:44,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 20:56:44,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:56:44,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:44,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:56:44,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-14 20:56:44,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:56:44,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 20:56:44,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:56:44,342 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:56:44,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:56:44,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:56:44,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:56:44,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:56:44,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-14 20:56:44,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:56:44,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:44,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:56:44,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-14 20:56:44,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:56:44,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-14 20:56:44,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:56:44,417 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:56:44,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 20:56:44,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:56:44,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-14 20:56:44,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:56:44,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-14 20:56:44,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:56:44,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:44,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:56:44,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 20:56:44,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:56:44,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-14 20:56:44,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:56:44,567 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:56:44,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 20:56:44,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 20:56:44,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-14 20:56:44,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:56:44,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-14 20:56:44,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:56:44,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:44,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:56:44,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-14 20:56:44,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:56:44,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-14 20:56:44,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:56:44,684 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:56:44,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:56:44,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 119 [2020-10-14 20:56:44,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:56:44,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:56:44,807 INFO L134 CoverageAnalysis]: Checked inductivity of 748 backedges. 385 proven. 85 refuted. 0 times theorem prover too weak. 278 trivial. 0 not checked. [2020-10-14 20:56:44,807 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1907218992] [2020-10-14 20:56:44,808 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 20:56:44,808 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 20:56:44,808 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023321720] [2020-10-14 20:56:44,808 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 20:56:44,808 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 20:56:44,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 20:56:44,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 20:56:44,809 INFO L87 Difference]: Start difference. First operand 24436 states and 30542 transitions. Second operand 7 states. [2020-10-14 20:56:49,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 20:56:49,162 INFO L93 Difference]: Finished difference Result 51937 states and 65989 transitions. [2020-10-14 20:56:49,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 20:56:49,163 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 466 [2020-10-14 20:56:49,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 20:56:49,212 INFO L225 Difference]: With dead ends: 51937 [2020-10-14 20:56:49,212 INFO L226 Difference]: Without dead ends: 29445 [2020-10-14 20:56:49,236 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 20:56:49,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29445 states. [2020-10-14 20:56:49,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29445 to 28463. [2020-10-14 20:56:49,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28463 states. [2020-10-14 20:56:49,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28463 states to 28463 states and 35413 transitions. [2020-10-14 20:56:49,642 INFO L78 Accepts]: Start accepts. Automaton has 28463 states and 35413 transitions. Word has length 466 [2020-10-14 20:56:49,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 20:56:49,643 INFO L479 AbstractCegarLoop]: Abstraction has 28463 states and 35413 transitions. [2020-10-14 20:56:49,643 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 20:56:49,643 INFO L276 IsEmpty]: Start isEmpty. Operand 28463 states and 35413 transitions. [2020-10-14 20:56:49,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 467 [2020-10-14 20:56:49,656 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 20:56:49,656 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 20:56:49,656 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 20:56:49,656 INFO L427 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 20:56:49,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 20:56:49,657 INFO L82 PathProgramCache]: Analyzing trace with hash -553806995, now seen corresponding path program 1 times [2020-10-14 20:56:49,657 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 20:56:49,657 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [280619908] [2020-10-14 20:56:49,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 20:56:49,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:56:49,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:49,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:49,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:50,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:54,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:54,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:56:54,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 482 [2020-10-14 20:56:54,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 20:56:54,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5120 [2020-10-14 20:56:54,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:56:54,843 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:56:54,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 20:56:54,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 212 [2020-10-14 20:56:54,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-14 20:56:54,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:56:54,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 20:56:54,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:56:54,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:54,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:56:54,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 20:56:54,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:56:54,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 20:56:54,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:56:54,909 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:56:54,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:56:54,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:56:54,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:56:54,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:56:54,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 20:56:54,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:56:54,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:54,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:56:54,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-14 20:56:54,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:56:54,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-14 20:56:54,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:56:54,951 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:56:54,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:56:54,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:56:54,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:56:54,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:56:54,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-14 20:56:54,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:56:54,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:55,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:56:55,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 20:56:55,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:56:55,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-14 20:56:55,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:56:55,021 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:56:55,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 20:56:55,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:56:55,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-14 20:56:55,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:56:55,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-14 20:56:55,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:56:55,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:55,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:56:55,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 20:56:55,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:56:55,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-14 20:56:55,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:56:55,114 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:56:55,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 20:56:55,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 20:56:55,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-14 20:56:55,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:56:55,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-14 20:56:55,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:56:55,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:56:55,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:56:55,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-14 20:56:55,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:56:55,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-14 20:56:55,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:56:55,205 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:56:55,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:56:55,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 119 [2020-10-14 20:56:55,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:56:55,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:56:55,329 INFO L134 CoverageAnalysis]: Checked inductivity of 723 backedges. 375 proven. 85 refuted. 0 times theorem prover too weak. 263 trivial. 0 not checked. [2020-10-14 20:56:55,329 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [280619908] [2020-10-14 20:56:55,330 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 20:56:55,330 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 20:56:55,330 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331342272] [2020-10-14 20:56:55,331 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 20:56:55,331 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 20:56:55,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 20:56:55,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 20:56:55,331 INFO L87 Difference]: Start difference. First operand 28463 states and 35413 transitions. Second operand 7 states. [2020-10-14 20:56:59,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 20:56:59,252 INFO L93 Difference]: Finished difference Result 55378 states and 69180 transitions. [2020-10-14 20:56:59,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 20:56:59,254 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 466 [2020-10-14 20:56:59,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 20:56:59,305 INFO L225 Difference]: With dead ends: 55378 [2020-10-14 20:56:59,305 INFO L226 Difference]: Without dead ends: 29229 [2020-10-14 20:56:59,332 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 20:56:59,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29229 states. [2020-10-14 20:56:59,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29229 to 28247. [2020-10-14 20:56:59,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28247 states. [2020-10-14 20:56:59,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28247 states to 28247 states and 34465 transitions. [2020-10-14 20:56:59,821 INFO L78 Accepts]: Start accepts. Automaton has 28247 states and 34465 transitions. Word has length 466 [2020-10-14 20:56:59,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 20:56:59,822 INFO L479 AbstractCegarLoop]: Abstraction has 28247 states and 34465 transitions. [2020-10-14 20:56:59,822 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 20:56:59,822 INFO L276 IsEmpty]: Start isEmpty. Operand 28247 states and 34465 transitions. [2020-10-14 20:56:59,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 480 [2020-10-14 20:56:59,849 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 20:56:59,853 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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 20:56:59,853 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 20:56:59,853 INFO L427 AbstractCegarLoop]: === Iteration 17 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 20:56:59,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 20:56:59,854 INFO L82 PathProgramCache]: Analyzing trace with hash -240329693, now seen corresponding path program 1 times [2020-10-14 20:56:59,854 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 20:56:59,855 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [69992427] [2020-10-14 20:56:59,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 20:56:59,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:57:00,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:57:00,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:57:02,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:57:03,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:57:03,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 495 [2020-10-14 20:57:03,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 20:57:03,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3466 [2020-10-14 20:57:03,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:57:03,472 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:57:03,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 20:57:03,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 361 [2020-10-14 20:57:03,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 20:57:03,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:57:03,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 20:57:03,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:57:03,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:57:03,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:57:03,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 20:57:03,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:57:03,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 20:57:03,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:57:03,568 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:57:03,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:57:03,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:57:03,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:57:03,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:57:03,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 20:57:03,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:57:03,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:57:03,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:57:03,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-14 20:57:03,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:57:03,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-14 20:57:03,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:57:03,613 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:57:03,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:57:03,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:57:03,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:57:03,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:57:03,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-14 20:57:03,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:57:03,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:57:03,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:57:03,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-14 20:57:03,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:57:03,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-14 20:57:03,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:57:03,665 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:57:03,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:57:03,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:57:03,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:57:03,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:57:03,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-10-14 20:57:03,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:57:03,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:57:03,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:57:03,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-14 20:57:03,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:57:03,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-14 20:57:03,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:57:03,741 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:57:03,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 20:57:03,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:57:03,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-14 20:57:03,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:57:03,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-14 20:57:03,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:57:03,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:57:03,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:57:03,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 20:57:03,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:57:03,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-14 20:57:03,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:57:03,832 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:57:03,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 20:57:03,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 20:57:03,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 20:57:03,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:57:04,011 INFO L134 CoverageAnalysis]: Checked inductivity of 712 backedges. 428 proven. 2 refuted. 0 times theorem prover too weak. 282 trivial. 0 not checked. [2020-10-14 20:57:04,011 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [69992427] [2020-10-14 20:57:04,011 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 20:57:04,011 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 20:57:04,012 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978083612] [2020-10-14 20:57:04,012 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 20:57:04,012 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 20:57:04,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 20:57:04,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 20:57:04,013 INFO L87 Difference]: Start difference. First operand 28247 states and 34465 transitions. Second operand 7 states. [2020-10-14 20:57:07,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 20:57:07,508 INFO L93 Difference]: Finished difference Result 53632 states and 65909 transitions. [2020-10-14 20:57:07,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 20:57:07,509 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 479 [2020-10-14 20:57:07,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 20:57:07,561 INFO L225 Difference]: With dead ends: 53632 [2020-10-14 20:57:07,561 INFO L226 Difference]: Without dead ends: 28861 [2020-10-14 20:57:07,588 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 20:57:07,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28861 states. [2020-10-14 20:57:07,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28861 to 28817. [2020-10-14 20:57:07,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28817 states. [2020-10-14 20:57:08,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28817 states to 28817 states and 35150 transitions. [2020-10-14 20:57:08,010 INFO L78 Accepts]: Start accepts. Automaton has 28817 states and 35150 transitions. Word has length 479 [2020-10-14 20:57:08,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 20:57:08,011 INFO L479 AbstractCegarLoop]: Abstraction has 28817 states and 35150 transitions. [2020-10-14 20:57:08,011 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 20:57:08,011 INFO L276 IsEmpty]: Start isEmpty. Operand 28817 states and 35150 transitions. [2020-10-14 20:57:08,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 494 [2020-10-14 20:57:08,031 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 20:57:08,032 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 20:57:08,033 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-14 20:57:08,033 INFO L427 AbstractCegarLoop]: === Iteration 18 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 20:57:08,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 20:57:08,034 INFO L82 PathProgramCache]: Analyzing trace with hash 1642911838, now seen corresponding path program 1 times [2020-10-14 20:57:08,034 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 20:57:08,034 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [428881701] [2020-10-14 20:57:08,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 20:57:08,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:57:08,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:57:08,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:57:08,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:57:09,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:57:10,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:57:10,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 509 [2020-10-14 20:57:10,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 20:57:10,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2549 [2020-10-14 20:57:10,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:57:10,667 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:57:10,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 20:57:10,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 239 [2020-10-14 20:57:10,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-14 20:57:10,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:57:10,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 20:57:10,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:57:10,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:57:10,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:57:10,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 20:57:10,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:57:10,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 20:57:10,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:57:10,744 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:57:10,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:57:10,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:57:10,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:57:10,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:57:10,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 20:57:10,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:57:10,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:57:10,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:57:10,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-14 20:57:10,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:57:10,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-14 20:57:10,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:57:10,797 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:57:10,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:57:10,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:57:10,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:57:10,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:57:10,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-14 20:57:10,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:57:10,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:57:10,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:57:10,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-14 20:57:10,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:57:10,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-14 20:57:10,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:57:10,887 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:57:10,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 20:57:10,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:57:10,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-14 20:57:10,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:57:10,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2020-10-14 20:57:10,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:57:10,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:57:10,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:57:10,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 20:57:10,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:57:10,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-14 20:57:10,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:57:10,986 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:57:10,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 20:57:10,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 20:57:10,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-14 20:57:10,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:57:11,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2020-10-14 20:57:11,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:57:11,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:57:11,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:57:11,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-14 20:57:11,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:57:11,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-14 20:57:11,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:57:11,083 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:57:11,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:57:11,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 119 [2020-10-14 20:57:11,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:57:11,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:57:11,202 INFO L134 CoverageAnalysis]: Checked inductivity of 789 backedges. 387 proven. 85 refuted. 0 times theorem prover too weak. 317 trivial. 0 not checked. [2020-10-14 20:57:11,202 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [428881701] [2020-10-14 20:57:11,203 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 20:57:11,203 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 20:57:11,203 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223113514] [2020-10-14 20:57:11,204 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 20:57:11,204 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 20:57:11,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 20:57:11,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 20:57:11,204 INFO L87 Difference]: Start difference. First operand 28817 states and 35150 transitions. Second operand 7 states. [2020-10-14 20:57:15,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 20:57:15,397 INFO L93 Difference]: Finished difference Result 55896 states and 68343 transitions. [2020-10-14 20:57:15,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 20:57:15,398 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 493 [2020-10-14 20:57:15,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 20:57:15,450 INFO L225 Difference]: With dead ends: 55896 [2020-10-14 20:57:15,450 INFO L226 Difference]: Without dead ends: 29985 [2020-10-14 20:57:15,478 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 20:57:15,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29985 states. [2020-10-14 20:57:15,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29985 to 28623. [2020-10-14 20:57:15,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28623 states. [2020-10-14 20:57:15,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28623 states to 28623 states and 34887 transitions. [2020-10-14 20:57:15,938 INFO L78 Accepts]: Start accepts. Automaton has 28623 states and 34887 transitions. Word has length 493 [2020-10-14 20:57:15,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 20:57:15,939 INFO L479 AbstractCegarLoop]: Abstraction has 28623 states and 34887 transitions. [2020-10-14 20:57:15,939 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 20:57:15,939 INFO L276 IsEmpty]: Start isEmpty. Operand 28623 states and 34887 transitions. [2020-10-14 20:57:15,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 502 [2020-10-14 20:57:15,964 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 20:57:15,965 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 20:57:15,965 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-14 20:57:15,965 INFO L427 AbstractCegarLoop]: === Iteration 19 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 20:57:15,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 20:57:15,966 INFO L82 PathProgramCache]: Analyzing trace with hash -478540210, now seen corresponding path program 1 times [2020-10-14 20:57:15,966 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 20:57:15,966 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [449643142] [2020-10-14 20:57:15,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 20:57:16,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:57:16,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:57:16,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:57:17,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:57:17,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:57:20,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:57:20,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 517 [2020-10-14 20:57:20,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 20:57:20,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4887 [2020-10-14 20:57:20,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:57:20,981 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:57:20,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 20:57:20,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-14 20:57:20,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-14 20:57:20,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:57:21,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 20:57:21,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:57:21,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:57:21,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:57:21,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 20:57:21,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:57:21,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 20:57:21,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:57:21,062 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:57:21,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:57:21,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:57:21,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:57:21,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:57:21,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 20:57:21,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:57:21,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:57:21,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:57:21,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-14 20:57:21,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:57:21,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-14 20:57:21,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:57:21,181 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:57:21,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 20:57:21,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:57:21,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-14 20:57:21,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:57:21,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-14 20:57:21,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:57:21,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:57:21,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:57:21,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-14 20:57:21,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:57:21,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-14 20:57:21,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:57:21,354 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:57:21,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 20:57:21,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 20:57:21,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-14 20:57:21,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:57:21,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2020-10-14 20:57:21,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:57:21,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:57:21,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:57:21,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 20:57:21,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:57:21,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-14 20:57:21,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:57:21,455 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:57:21,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:57:21,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-14 20:57:21,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:57:21,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:57:21,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2020-10-14 20:57:21,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:57:21,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:57:21,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:57:21,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-14 20:57:21,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:57:21,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-14 20:57:21,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:57:21,527 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:57:21,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:57:21,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 119 [2020-10-14 20:57:21,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:57:21,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:57:21,659 INFO L134 CoverageAnalysis]: Checked inductivity of 805 backedges. 322 proven. 191 refuted. 0 times theorem prover too weak. 292 trivial. 0 not checked. [2020-10-14 20:57:21,659 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [449643142] [2020-10-14 20:57:21,659 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 20:57:21,660 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 20:57:21,660 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742338579] [2020-10-14 20:57:21,661 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 20:57:21,661 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 20:57:21,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 20:57:21,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 20:57:21,661 INFO L87 Difference]: Start difference. First operand 28623 states and 34887 transitions. Second operand 7 states. [2020-10-14 20:57:25,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 20:57:25,956 INFO L93 Difference]: Finished difference Result 61308 states and 74283 transitions. [2020-10-14 20:57:25,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 20:57:25,957 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 501 [2020-10-14 20:57:25,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 20:57:26,016 INFO L225 Difference]: With dead ends: 61308 [2020-10-14 20:57:26,016 INFO L226 Difference]: Without dead ends: 32671 [2020-10-14 20:57:26,047 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 20:57:26,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32671 states. [2020-10-14 20:57:26,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32671 to 30713. [2020-10-14 20:57:26,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30713 states. [2020-10-14 20:57:26,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30713 states to 30713 states and 36666 transitions. [2020-10-14 20:57:26,705 INFO L78 Accepts]: Start accepts. Automaton has 30713 states and 36666 transitions. Word has length 501 [2020-10-14 20:57:26,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 20:57:26,706 INFO L479 AbstractCegarLoop]: Abstraction has 30713 states and 36666 transitions. [2020-10-14 20:57:26,706 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 20:57:26,706 INFO L276 IsEmpty]: Start isEmpty. Operand 30713 states and 36666 transitions. [2020-10-14 20:57:26,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 523 [2020-10-14 20:57:26,727 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 20:57:26,728 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-14 20:57:26,728 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-14 20:57:26,728 INFO L427 AbstractCegarLoop]: === Iteration 20 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 20:57:26,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 20:57:26,729 INFO L82 PathProgramCache]: Analyzing trace with hash -1348323999, now seen corresponding path program 1 times [2020-10-14 20:57:26,729 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 20:57:26,729 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1938714623] [2020-10-14 20:57:26,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 20:57:26,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:57:26,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:57:27,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:57:27,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:57:27,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:57:31,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:57:31,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 538 [2020-10-14 20:57:31,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 20:57:31,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4332 [2020-10-14 20:57:31,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:57:31,140 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:57:31,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 20:57:31,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 157 [2020-10-14 20:57:31,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-14 20:57:31,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:57:31,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 20:57:31,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:57:31,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:57:31,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:57:31,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 20:57:31,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:57:31,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 20:57:31,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:57:31,214 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:57:31,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:57:31,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:57:31,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:57:31,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:57:31,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 20:57:31,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:57:31,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:57:31,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:57:31,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-14 20:57:31,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:57:31,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-14 20:57:31,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:57:31,322 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:57:31,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 20:57:31,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:57:31,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-10-14 20:57:31,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:57:31,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-14 20:57:31,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:57:31,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:57:31,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:57:31,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-14 20:57:31,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:57:31,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-14 20:57:31,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:57:31,478 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:57:31,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 20:57:31,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 20:57:31,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-14 20:57:31,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:57:31,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2020-10-14 20:57:31,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:57:31,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:57:31,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:57:31,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 20:57:31,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:57:31,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-14 20:57:31,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:57:31,603 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:57:31,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:57:31,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-14 20:57:31,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:57:31,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:57:31,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2020-10-14 20:57:31,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:57:31,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:57:31,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:57:31,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-14 20:57:31,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:57:31,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-14 20:57:31,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:57:31,677 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:57:31,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:57:31,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 119 [2020-10-14 20:57:31,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:57:31,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:57:31,856 INFO L134 CoverageAnalysis]: Checked inductivity of 805 backedges. 322 proven. 191 refuted. 0 times theorem prover too weak. 292 trivial. 0 not checked. [2020-10-14 20:57:31,856 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1938714623] [2020-10-14 20:57:31,856 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 20:57:31,857 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 20:57:31,857 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133445408] [2020-10-14 20:57:31,857 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 20:57:31,858 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 20:57:31,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 20:57:31,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 20:57:31,858 INFO L87 Difference]: Start difference. First operand 30713 states and 36666 transitions. Second operand 7 states. [2020-10-14 20:57:35,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 20:57:35,059 INFO L93 Difference]: Finished difference Result 63961 states and 76347 transitions. [2020-10-14 20:57:35,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 20:57:35,060 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 522 [2020-10-14 20:57:35,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 20:57:35,127 INFO L225 Difference]: With dead ends: 63961 [2020-10-14 20:57:35,127 INFO L226 Difference]: Without dead ends: 33638 [2020-10-14 20:57:35,161 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 20:57:35,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33638 states. [2020-10-14 20:57:35,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33638 to 32613. [2020-10-14 20:57:35,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32613 states. [2020-10-14 20:57:35,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32613 states to 32613 states and 38707 transitions. [2020-10-14 20:57:35,588 INFO L78 Accepts]: Start accepts. Automaton has 32613 states and 38707 transitions. Word has length 522 [2020-10-14 20:57:35,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 20:57:35,588 INFO L479 AbstractCegarLoop]: Abstraction has 32613 states and 38707 transitions. [2020-10-14 20:57:35,588 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 20:57:35,589 INFO L276 IsEmpty]: Start isEmpty. Operand 32613 states and 38707 transitions. [2020-10-14 20:57:35,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 525 [2020-10-14 20:57:35,608 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 20:57:35,608 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-14 20:57:35,609 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-14 20:57:35,609 INFO L427 AbstractCegarLoop]: === Iteration 21 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 20:57:35,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 20:57:35,609 INFO L82 PathProgramCache]: Analyzing trace with hash -1326522558, now seen corresponding path program 1 times [2020-10-14 20:57:35,610 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 20:57:35,610 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1971914777] [2020-10-14 20:57:35,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 20:57:35,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:57:35,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:57:35,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:57:37,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:57:38,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:57:38,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 540 [2020-10-14 20:57:38,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 20:57:38,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2965 [2020-10-14 20:57:38,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:57:38,660 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:57:38,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 20:57:38,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 281 [2020-10-14 20:57:38,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-14 20:57:38,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:57:38,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 20:57:38,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:57:38,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:57:38,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:57:38,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 20:57:38,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:57:38,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 20:57:38,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:57:38,743 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:57:38,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:57:38,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:57:38,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:57:38,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:57:38,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 20:57:38,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:57:38,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:57:38,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:57:38,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-14 20:57:38,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:57:38,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-14 20:57:38,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:57:38,794 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:57:38,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:57:38,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:57:38,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:57:38,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:57:38,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-14 20:57:38,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:57:38,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:57:38,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:57:38,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-14 20:57:38,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:57:38,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-14 20:57:38,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:57:38,900 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:57:38,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 20:57:38,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:57:38,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-10-14 20:57:38,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:57:38,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-10-14 20:57:38,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:57:38,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:57:39,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:57:39,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-14 20:57:39,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:57:39,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-14 20:57:39,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:57:39,046 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:57:39,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 20:57:39,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 20:57:39,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-14 20:57:39,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:57:39,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 400 [2020-10-14 20:57:39,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:57:39,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:57:39,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:57:39,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 20:57:39,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:57:39,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 20:57:39,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:57:39,167 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:57:39,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:57:39,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-14 20:57:39,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:57:39,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:57:39,298 INFO L134 CoverageAnalysis]: Checked inductivity of 802 backedges. 461 proven. 72 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2020-10-14 20:57:39,298 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1971914777] [2020-10-14 20:57:39,298 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 20:57:39,299 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 20:57:39,299 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981194028] [2020-10-14 20:57:39,299 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 20:57:39,300 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 20:57:39,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 20:57:39,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 20:57:39,300 INFO L87 Difference]: Start difference. First operand 32613 states and 38707 transitions. Second operand 7 states. [2020-10-14 20:57:42,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 20:57:42,635 INFO L93 Difference]: Finished difference Result 60699 states and 72203 transitions. [2020-10-14 20:57:42,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 20:57:42,636 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 524 [2020-10-14 20:57:42,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 20:57:42,694 INFO L225 Difference]: With dead ends: 60699 [2020-10-14 20:57:42,694 INFO L226 Difference]: Without dead ends: 32322 [2020-10-14 20:57:42,713 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-14 20:57:42,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32322 states. [2020-10-14 20:57:43,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32322 to 31873. [2020-10-14 20:57:43,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31873 states. [2020-10-14 20:57:43,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31873 states to 31873 states and 37115 transitions. [2020-10-14 20:57:43,059 INFO L78 Accepts]: Start accepts. Automaton has 31873 states and 37115 transitions. Word has length 524 [2020-10-14 20:57:43,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 20:57:43,060 INFO L479 AbstractCegarLoop]: Abstraction has 31873 states and 37115 transitions. [2020-10-14 20:57:43,060 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 20:57:43,060 INFO L276 IsEmpty]: Start isEmpty. Operand 31873 states and 37115 transitions. [2020-10-14 20:57:43,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 538 [2020-10-14 20:57:43,073 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 20:57:43,073 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-14 20:57:43,073 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-14 20:57:43,073 INFO L427 AbstractCegarLoop]: === Iteration 22 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 20:57:43,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 20:57:43,074 INFO L82 PathProgramCache]: Analyzing trace with hash 1689989144, now seen corresponding path program 1 times [2020-10-14 20:57:43,074 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 20:57:43,074 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2088961886] [2020-10-14 20:57:43,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 20:57:43,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:57:43,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:57:43,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:57:44,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:57:44,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:57:44,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 551 [2020-10-14 20:57:44,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 20:57:44,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1749 [2020-10-14 20:57:44,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:57:44,941 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:57:44,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 20:57:44,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 338 [2020-10-14 20:57:44,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 155 [2020-10-14 20:57:44,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:57:45,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 20:57:45,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:57:45,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:57:45,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:57:45,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 20:57:45,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:57:45,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 20:57:45,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:57:45,048 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:57:45,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:57:45,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:57:45,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:57:45,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:57:45,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 20:57:45,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:57:45,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:57:45,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:57:45,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-14 20:57:45,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:57:45,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-14 20:57:45,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:57:45,126 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:57:45,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:57:45,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:57:45,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:57:45,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:57:45,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2020-10-14 20:57:45,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:57:45,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:57:45,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:57:45,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-14 20:57:45,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:57:45,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-14 20:57:45,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:57:45,277 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:57:45,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 20:57:45,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:57:45,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 150 [2020-10-14 20:57:45,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:57:45,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2020-10-14 20:57:45,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:57:45,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:57:45,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:57:45,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-14 20:57:45,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:57:45,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 285 [2020-10-14 20:57:45,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:57:45,639 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:57:45,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 20:57:45,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 20:57:45,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 153 [2020-10-14 20:57:45,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:57:46,124 INFO L134 CoverageAnalysis]: Checked inductivity of 615 backedges. 459 proven. 2 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2020-10-14 20:57:46,124 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2088961886] [2020-10-14 20:57:46,125 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 20:57:46,125 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 20:57:46,125 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786390056] [2020-10-14 20:57:46,126 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 20:57:46,126 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 20:57:46,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 20:57:46,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 20:57:46,127 INFO L87 Difference]: Start difference. First operand 31873 states and 37115 transitions. Second operand 7 states. [2020-10-14 20:57:50,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 20:57:50,070 INFO L93 Difference]: Finished difference Result 62038 states and 72042 transitions. [2020-10-14 20:57:50,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 20:57:50,073 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 537 [2020-10-14 20:57:50,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 20:57:50,137 INFO L225 Difference]: With dead ends: 62038 [2020-10-14 20:57:50,137 INFO L226 Difference]: Without dead ends: 30555 [2020-10-14 20:57:50,165 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 20:57:50,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30555 states. [2020-10-14 20:57:50,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30555 to 29163. [2020-10-14 20:57:50,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29163 states. [2020-10-14 20:57:50,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29163 states to 29163 states and 33393 transitions. [2020-10-14 20:57:50,494 INFO L78 Accepts]: Start accepts. Automaton has 29163 states and 33393 transitions. Word has length 537 [2020-10-14 20:57:50,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 20:57:50,495 INFO L479 AbstractCegarLoop]: Abstraction has 29163 states and 33393 transitions. [2020-10-14 20:57:50,495 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 20:57:50,495 INFO L276 IsEmpty]: Start isEmpty. Operand 29163 states and 33393 transitions. [2020-10-14 20:57:50,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 542 [2020-10-14 20:57:50,508 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 20:57:50,509 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 20:57:50,509 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-14 20:57:50,509 INFO L427 AbstractCegarLoop]: === Iteration 23 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 20:57:50,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 20:57:50,509 INFO L82 PathProgramCache]: Analyzing trace with hash -1342456211, now seen corresponding path program 1 times [2020-10-14 20:57:50,510 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 20:57:50,510 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1819107732] [2020-10-14 20:57:50,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 20:57:50,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:57:50,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:57:50,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:57:50,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:57:51,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:57:51,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:57:51,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:57:51,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:57:52,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:57:52,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:57:54,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:57:54,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 555 [2020-10-14 20:57:54,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-14 20:57:54,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4056 [2020-10-14 20:57:54,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:57:54,643 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:57:54,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 20:57:54,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 20:57:54,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 491 [2020-10-14 20:57:54,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:57:54,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 20:57:54,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:57:54,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:57:54,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:57:54,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 20:57:54,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:57:54,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 20:57:54,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:57:54,739 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:57:54,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 20:57:54,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:57:54,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 20:57:54,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:57:54,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 20:57:54,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:57:54,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:57:54,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:57:54,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:57:54,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-14 20:57:54,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 20:57:54,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-14 20:57:54,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:57:54,857 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:57:54,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 20:57:54,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:57:54,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-10-14 20:57:54,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:57:54,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-14 20:57:54,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:57:54,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:57:54,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:57:55,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:57:55,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-14 20:57:55,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 20:57:55,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 174 [2020-10-14 20:57:55,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:57:55,079 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:57:55,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 20:57:55,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:57:55,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 168 [2020-10-14 20:57:55,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:57:55,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2020-10-14 20:57:55,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:57:55,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:57:55,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:57:55,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:57:55,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-10-14 20:57:55,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 20:57:55,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 162 [2020-10-14 20:57:55,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:57:55,300 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:57:55,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 20:57:55,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 170 [2020-10-14 20:57:55,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 20:57:55,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:57:55,445 INFO L134 CoverageAnalysis]: Checked inductivity of 587 backedges. 162 proven. 2 refuted. 0 times theorem prover too weak. 423 trivial. 0 not checked. [2020-10-14 20:57:55,446 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1819107732] [2020-10-14 20:57:55,446 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 20:57:55,446 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 20:57:55,446 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481810381] [2020-10-14 20:57:55,447 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 20:57:55,447 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 20:57:55,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 20:57:55,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-14 20:57:55,448 INFO L87 Difference]: Start difference. First operand 29163 states and 33393 transitions. Second operand 6 states. [2020-10-14 20:57:57,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 20:57:57,414 INFO L93 Difference]: Finished difference Result 52808 states and 60608 transitions. [2020-10-14 20:57:57,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 20:57:57,415 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 541 [2020-10-14 20:57:57,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 20:57:57,461 INFO L225 Difference]: With dead ends: 52808 [2020-10-14 20:57:57,461 INFO L226 Difference]: Without dead ends: 28257 [2020-10-14 20:57:57,485 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 20:57:57,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28257 states. [2020-10-14 20:57:57,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28257 to 28188. [2020-10-14 20:57:57,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28188 states. [2020-10-14 20:57:57,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28188 states to 28188 states and 32244 transitions. [2020-10-14 20:57:57,805 INFO L78 Accepts]: Start accepts. Automaton has 28188 states and 32244 transitions. Word has length 541 [2020-10-14 20:57:57,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 20:57:57,806 INFO L479 AbstractCegarLoop]: Abstraction has 28188 states and 32244 transitions. [2020-10-14 20:57:57,806 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 20:57:57,806 INFO L276 IsEmpty]: Start isEmpty. Operand 28188 states and 32244 transitions. [2020-10-14 20:57:57,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 548 [2020-10-14 20:57:57,818 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 20:57:57,818 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 20:57:57,819 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-14 20:57:57,819 INFO L427 AbstractCegarLoop]: === Iteration 24 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 20:57:57,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 20:57:57,819 INFO L82 PathProgramCache]: Analyzing trace with hash -2106469395, now seen corresponding path program 1 times [2020-10-14 20:57:57,819 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 20:57:57,819 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [269487759] [2020-10-14 20:57:57,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 20:57:57,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:57:57,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:57:58,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:57:58,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:58:00,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:58:00,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:58:02,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:58:02,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 563 [2020-10-14 20:58:02,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 20:58:02,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 20:58:02,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:58:02,890 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:58:02,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 20:58:02,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 20:58:02,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 289 [2020-10-14 20:58:02,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:58:02,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 20:58:02,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:58:02,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:58:02,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:58:02,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 20:58:02,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:58:02,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 20:58:03,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:58:03,000 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:58:03,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 20:58:03,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:58:03,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 20:58:03,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:58:03,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 20:58:03,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:58:03,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:58:03,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:58:03,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-14 20:58:03,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:58:03,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 276 [2020-10-14 20:58:03,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:58:03,341 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:58:03,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 20:58:03,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 20:58:03,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 172 [2020-10-14 20:58:03,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:58:03,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2020-10-14 20:58:03,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:58:03,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:58:03,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:58:03,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-14 20:58:03,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:58:03,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-10-14 20:58:03,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:58:03,646 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:58:03,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 20:58:03,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 20:58:03,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-14 20:58:03,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:58:03,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2020-10-14 20:58:03,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:58:03,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:58:03,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:58:03,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 20:58:03,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:58:03,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-14 20:58:03,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:58:03,757 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:58:03,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:58:03,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-14 20:58:03,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:58:03,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:58:03,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2020-10-14 20:58:03,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:58:03,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:58:03,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:58:03,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-14 20:58:03,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:58:03,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-14 20:58:03,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:58:03,823 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:58:03,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:58:03,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 119 [2020-10-14 20:58:03,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:58:03,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:58:04,116 INFO L134 CoverageAnalysis]: Checked inductivity of 807 backedges. 320 proven. 385 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2020-10-14 20:58:04,116 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [269487759] [2020-10-14 20:58:04,116 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 20:58:04,117 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 20:58:04,117 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647522841] [2020-10-14 20:58:04,118 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 20:58:04,118 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 20:58:04,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 20:58:04,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-14 20:58:04,118 INFO L87 Difference]: Start difference. First operand 28188 states and 32244 transitions. Second operand 8 states. [2020-10-14 20:58:07,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 20:58:07,177 INFO L93 Difference]: Finished difference Result 52206 states and 59938 transitions. [2020-10-14 20:58:07,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 20:58:07,178 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 547 [2020-10-14 20:58:07,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 20:58:07,225 INFO L225 Difference]: With dead ends: 52206 [2020-10-14 20:58:07,226 INFO L226 Difference]: Without dead ends: 28624 [2020-10-14 20:58:07,250 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2020-10-14 20:58:07,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28624 states. [2020-10-14 20:58:07,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28624 to 28370. [2020-10-14 20:58:07,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28370 states. [2020-10-14 20:58:07,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28370 states to 28370 states and 32436 transitions. [2020-10-14 20:58:07,555 INFO L78 Accepts]: Start accepts. Automaton has 28370 states and 32436 transitions. Word has length 547 [2020-10-14 20:58:07,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 20:58:07,555 INFO L479 AbstractCegarLoop]: Abstraction has 28370 states and 32436 transitions. [2020-10-14 20:58:07,555 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 20:58:07,555 INFO L276 IsEmpty]: Start isEmpty. Operand 28370 states and 32436 transitions. [2020-10-14 20:58:07,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 557 [2020-10-14 20:58:07,567 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 20:58:07,567 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-14 20:58:07,567 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-14 20:58:07,568 INFO L427 AbstractCegarLoop]: === Iteration 25 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 20:58:07,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 20:58:07,568 INFO L82 PathProgramCache]: Analyzing trace with hash -1625636774, now seen corresponding path program 1 times [2020-10-14 20:58:07,568 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 20:58:07,568 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [411197443] [2020-10-14 20:58:07,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 20:58:07,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:58:07,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:58:07,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:58:08,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:58:09,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:58:09,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:58:12,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:58:12,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 572 [2020-10-14 20:58:12,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 20:58:12,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5048 [2020-10-14 20:58:12,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:58:12,683 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:58:12,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 20:58:12,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 157 [2020-10-14 20:58:12,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 146 [2020-10-14 20:58:12,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:58:12,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 20:58:12,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:58:12,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:58:12,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:58:12,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 20:58:12,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:58:12,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 20:58:12,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:58:12,768 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:58:12,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:58:12,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:58:12,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:58:12,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:58:12,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 20:58:12,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:58:12,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:58:13,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:58:13,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-14 20:58:13,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:58:13,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 203 [2020-10-14 20:58:13,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:58:13,010 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:58:13,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 20:58:13,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:58:13,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-10-14 20:58:13,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:58:13,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-14 20:58:13,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:58:13,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:58:13,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:58:13,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-14 20:58:13,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:58:13,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-10-14 20:58:13,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:58:13,224 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:58:13,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 20:58:13,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 20:58:13,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-14 20:58:13,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:58:13,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2020-10-14 20:58:13,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:58:13,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:58:13,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:58:13,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 20:58:13,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:58:13,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-14 20:58:13,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:58:13,328 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:58:13,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:58:13,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-14 20:58:13,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:58:13,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:58:13,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2020-10-14 20:58:13,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:58:13,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:58:13,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:58:13,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-14 20:58:13,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:58:13,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-14 20:58:13,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:58:13,394 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:58:13,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:58:13,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 119 [2020-10-14 20:58:13,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:58:13,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:58:13,551 INFO L134 CoverageAnalysis]: Checked inductivity of 851 backedges. 356 proven. 203 refuted. 0 times theorem prover too weak. 292 trivial. 0 not checked. [2020-10-14 20:58:13,552 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [411197443] [2020-10-14 20:58:13,552 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 20:58:13,552 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 20:58:13,552 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362717464] [2020-10-14 20:58:13,552 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 20:58:13,553 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 20:58:13,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 20:58:13,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 20:58:13,553 INFO L87 Difference]: Start difference. First operand 28370 states and 32436 transitions. Second operand 7 states. [2020-10-14 20:58:16,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 20:58:16,644 INFO L93 Difference]: Finished difference Result 54961 states and 63093 transitions. [2020-10-14 20:58:16,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 20:58:16,646 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 556 [2020-10-14 20:58:16,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 20:58:16,696 INFO L225 Difference]: With dead ends: 54961 [2020-10-14 20:58:16,697 INFO L226 Difference]: Without dead ends: 28693 [2020-10-14 20:58:16,723 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 20:58:16,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28693 states. [2020-10-14 20:58:17,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28693 to 28352. [2020-10-14 20:58:17,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28352 states. [2020-10-14 20:58:17,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28352 states to 28352 states and 32312 transitions. [2020-10-14 20:58:17,046 INFO L78 Accepts]: Start accepts. Automaton has 28352 states and 32312 transitions. Word has length 556 [2020-10-14 20:58:17,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 20:58:17,046 INFO L479 AbstractCegarLoop]: Abstraction has 28352 states and 32312 transitions. [2020-10-14 20:58:17,046 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 20:58:17,046 INFO L276 IsEmpty]: Start isEmpty. Operand 28352 states and 32312 transitions. [2020-10-14 20:58:17,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 561 [2020-10-14 20:58:17,058 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 20:58:17,059 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 20:58:17,059 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-14 20:58:17,059 INFO L427 AbstractCegarLoop]: === Iteration 26 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 20:58:17,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 20:58:17,060 INFO L82 PathProgramCache]: Analyzing trace with hash -175119100, now seen corresponding path program 1 times [2020-10-14 20:58:17,060 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 20:58:17,060 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2131470234] [2020-10-14 20:58:17,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 20:58:17,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:58:17,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:58:17,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:58:18,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:58:18,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 576 [2020-10-14 20:58:18,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 20:58:18,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 916 [2020-10-14 20:58:18,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:58:18,056 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:58:18,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 20:58:18,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 442 [2020-10-14 20:58:18,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-14 20:58:18,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:58:18,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 20:58:18,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:58:18,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:58:18,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:58:18,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 20:58:18,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:58:18,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 20:58:18,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:58:18,185 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:58:18,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:58:18,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:58:18,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:58:18,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:58:18,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 20:58:18,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:58:18,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:58:18,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:58:18,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-14 20:58:18,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:58:18,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-14 20:58:18,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:58:18,244 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:58:18,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:58:18,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:58:18,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:58:18,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:58:18,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2020-10-14 20:58:18,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:58:18,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:58:18,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:58:18,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-14 20:58:18,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:58:18,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-14 20:58:18,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:58:18,319 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:58:18,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:58:18,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:58:18,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:58:18,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:58:18,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2020-10-14 20:58:18,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:58:18,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:58:18,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:58:18,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-14 20:58:18,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:58:18,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-14 20:58:18,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:58:18,433 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:58:18,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 20:58:18,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:58:18,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-14 20:58:18,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:58:18,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 436 [2020-10-14 20:58:18,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:58:18,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:58:18,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:58:18,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 20:58:18,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:58:18,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-14 20:58:18,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:58:18,540 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:58:18,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 20:58:18,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 20:58:18,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 20:58:18,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:58:18,923 INFO L134 CoverageAnalysis]: Checked inductivity of 786 backedges. 421 proven. 9 refuted. 0 times theorem prover too weak. 356 trivial. 0 not checked. [2020-10-14 20:58:18,924 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2131470234] [2020-10-14 20:58:18,924 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 20:58:18,924 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 20:58:18,924 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452761466] [2020-10-14 20:58:18,925 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 20:58:18,925 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 20:58:18,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 20:58:18,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 20:58:18,925 INFO L87 Difference]: Start difference. First operand 28352 states and 32312 transitions. Second operand 8 states. [2020-10-14 20:58:22,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 20:58:22,563 INFO L93 Difference]: Finished difference Result 55056 states and 63032 transitions. [2020-10-14 20:58:22,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 20:58:22,565 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 560 [2020-10-14 20:58:22,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 20:58:22,614 INFO L225 Difference]: With dead ends: 55056 [2020-10-14 20:58:22,614 INFO L226 Difference]: Without dead ends: 31290 [2020-10-14 20:58:22,638 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-14 20:58:22,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31290 states. [2020-10-14 20:58:22,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31290 to 30834. [2020-10-14 20:58:22,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30834 states. [2020-10-14 20:58:22,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30834 states to 30834 states and 35338 transitions. [2020-10-14 20:58:22,971 INFO L78 Accepts]: Start accepts. Automaton has 30834 states and 35338 transitions. Word has length 560 [2020-10-14 20:58:22,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 20:58:22,972 INFO L479 AbstractCegarLoop]: Abstraction has 30834 states and 35338 transitions. [2020-10-14 20:58:22,972 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 20:58:22,972 INFO L276 IsEmpty]: Start isEmpty. Operand 30834 states and 35338 transitions. [2020-10-14 20:58:22,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 571 [2020-10-14 20:58:22,984 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 20:58:22,984 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 20:58:22,984 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-14 20:58:22,984 INFO L427 AbstractCegarLoop]: === Iteration 27 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 20:58:22,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 20:58:22,985 INFO L82 PathProgramCache]: Analyzing trace with hash -2127590163, now seen corresponding path program 1 times [2020-10-14 20:58:22,985 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 20:58:22,985 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2064789322] [2020-10-14 20:58:22,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 20:58:23,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:58:23,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:58:23,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:58:24,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:58:26,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:58:26,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 588 [2020-10-14 20:58:26,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 20:58:26,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3388 [2020-10-14 20:58:26,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:58:26,443 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:58:26,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 20:58:26,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 318 [2020-10-14 20:58:26,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-14 20:58:26,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:58:26,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 20:58:26,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:58:26,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:58:26,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:58:26,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 20:58:26,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:58:26,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 20:58:26,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:58:26,523 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:58:26,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:58:26,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:58:26,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:58:26,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:58:26,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 20:58:26,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:58:26,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:58:26,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:58:26,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-14 20:58:26,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:58:26,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 20:58:26,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:58:26,572 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:58:26,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:58:26,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:58:26,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:58:26,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:58:26,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-14 20:58:26,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:58:26,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:58:26,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:58:26,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 20:58:26,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:58:26,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 20:58:26,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:58:26,610 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:58:26,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:58:26,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:58:26,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:58:26,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:58:26,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-14 20:58:26,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:58:26,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:58:26,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:58:26,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-14 20:58:26,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:58:26,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-14 20:58:26,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:58:26,697 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:58:26,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 20:58:26,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:58:26,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-14 20:58:26,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:58:26,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2020-10-14 20:58:26,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:58:26,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:58:26,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:58:26,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 20:58:26,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:58:26,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-14 20:58:26,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:58:26,825 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:58:26,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 20:58:26,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 20:58:26,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-14 20:58:26,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:58:26,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2020-10-14 20:58:26,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:58:26,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:58:26,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:58:26,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-14 20:58:26,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:58:26,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-14 20:58:26,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:58:26,931 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:58:26,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:58:26,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 119 [2020-10-14 20:58:26,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:58:26,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:58:27,078 INFO L134 CoverageAnalysis]: Checked inductivity of 1167 backedges. 531 proven. 85 refuted. 0 times theorem prover too weak. 551 trivial. 0 not checked. [2020-10-14 20:58:27,078 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2064789322] [2020-10-14 20:58:27,078 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 20:58:27,079 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 20:58:27,079 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250045514] [2020-10-14 20:58:27,079 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 20:58:27,079 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 20:58:27,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 20:58:27,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 20:58:27,080 INFO L87 Difference]: Start difference. First operand 30834 states and 35338 transitions. Second operand 7 states. [2020-10-14 20:58:30,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 20:58:30,125 INFO L93 Difference]: Finished difference Result 60776 states and 69730 transitions. [2020-10-14 20:58:30,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 20:58:30,126 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 570 [2020-10-14 20:58:30,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 20:58:30,184 INFO L225 Difference]: With dead ends: 60776 [2020-10-14 20:58:30,184 INFO L226 Difference]: Without dead ends: 32046 [2020-10-14 20:58:30,214 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 20:58:30,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32046 states. [2020-10-14 20:58:30,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32046 to 31028. [2020-10-14 20:58:30,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31028 states. [2020-10-14 20:58:30,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31028 states to 31028 states and 35433 transitions. [2020-10-14 20:58:30,575 INFO L78 Accepts]: Start accepts. Automaton has 31028 states and 35433 transitions. Word has length 570 [2020-10-14 20:58:30,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 20:58:30,575 INFO L479 AbstractCegarLoop]: Abstraction has 31028 states and 35433 transitions. [2020-10-14 20:58:30,575 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 20:58:30,575 INFO L276 IsEmpty]: Start isEmpty. Operand 31028 states and 35433 transitions. [2020-10-14 20:58:30,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 595 [2020-10-14 20:58:30,590 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 20:58:30,590 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-14 20:58:30,590 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-14 20:58:30,591 INFO L427 AbstractCegarLoop]: === Iteration 28 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 20:58:30,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 20:58:30,591 INFO L82 PathProgramCache]: Analyzing trace with hash 1461428713, now seen corresponding path program 1 times [2020-10-14 20:58:30,591 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 20:58:30,592 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1519904970] [2020-10-14 20:58:30,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 20:58:30,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:58:30,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:58:30,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:58:31,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:58:32,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:58:33,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:58:33,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 610 [2020-10-14 20:58:33,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 20:58:33,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3111 [2020-10-14 20:58:33,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:58:33,780 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:58:33,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 20:58:33,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 340 [2020-10-14 20:58:33,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-14 20:58:33,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:58:33,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 20:58:33,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:58:33,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:58:33,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:58:33,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 20:58:33,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:58:33,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 20:58:33,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:58:33,912 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:58:33,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:58:33,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:58:33,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:58:33,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:58:33,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 20:58:33,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:58:33,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:58:33,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:58:33,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-10-14 20:58:33,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:58:33,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-14 20:58:33,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:58:33,973 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:58:33,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:58:33,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:58:33,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:58:33,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:58:34,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2020-10-14 20:58:34,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:58:34,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:58:34,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:58:34,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-14 20:58:34,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:58:34,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-14 20:58:34,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:58:34,107 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:58:34,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 20:58:34,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:58:34,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-14 20:58:34,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:58:34,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2020-10-14 20:58:34,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:58:34,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:58:34,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:58:34,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 20:58:34,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:58:34,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-14 20:58:34,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:58:34,219 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:58:34,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 20:58:34,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 20:58:34,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-14 20:58:34,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:58:34,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2020-10-14 20:58:34,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:58:34,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:58:34,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:58:34,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-14 20:58:34,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:58:34,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-14 20:58:34,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:58:34,312 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:58:34,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:58:34,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 119 [2020-10-14 20:58:34,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:58:34,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:58:34,475 INFO L134 CoverageAnalysis]: Checked inductivity of 851 backedges. 387 proven. 85 refuted. 0 times theorem prover too weak. 379 trivial. 0 not checked. [2020-10-14 20:58:34,475 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1519904970] [2020-10-14 20:58:34,475 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 20:58:34,476 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 20:58:34,476 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078968285] [2020-10-14 20:58:34,476 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 20:58:34,476 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 20:58:34,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 20:58:34,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 20:58:34,477 INFO L87 Difference]: Start difference. First operand 31028 states and 35433 transitions. Second operand 7 states. [2020-10-14 20:58:38,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 20:58:38,970 INFO L93 Difference]: Finished difference Result 58850 states and 67282 transitions. [2020-10-14 20:58:38,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 20:58:38,971 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 594 [2020-10-14 20:58:38,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 20:58:39,029 INFO L225 Difference]: With dead ends: 58850 [2020-10-14 20:58:39,029 INFO L226 Difference]: Without dead ends: 31280 [2020-10-14 20:58:39,057 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 20:58:39,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31280 states. [2020-10-14 20:58:39,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31280 to 29884. [2020-10-14 20:58:39,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29884 states. [2020-10-14 20:58:39,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29884 states to 29884 states and 34042 transitions. [2020-10-14 20:58:39,563 INFO L78 Accepts]: Start accepts. Automaton has 29884 states and 34042 transitions. Word has length 594 [2020-10-14 20:58:39,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 20:58:39,563 INFO L479 AbstractCegarLoop]: Abstraction has 29884 states and 34042 transitions. [2020-10-14 20:58:39,563 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 20:58:39,563 INFO L276 IsEmpty]: Start isEmpty. Operand 29884 states and 34042 transitions. [2020-10-14 20:58:39,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 616 [2020-10-14 20:58:39,577 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 20:58:39,577 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 20:58:39,578 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-14 20:58:39,578 INFO L427 AbstractCegarLoop]: === Iteration 29 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 20:58:39,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 20:58:39,578 INFO L82 PathProgramCache]: Analyzing trace with hash 1749163782, now seen corresponding path program 1 times [2020-10-14 20:58:39,578 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 20:58:39,578 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1247091950] [2020-10-14 20:58:39,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 20:58:39,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:58:39,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:58:39,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:58:41,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:58:42,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:58:42,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 633 [2020-10-14 20:58:42,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 20:58:42,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2731 [2020-10-14 20:58:42,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:58:42,398 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:58:42,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 20:58:42,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 318 [2020-10-14 20:58:42,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 134 [2020-10-14 20:58:42,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:58:42,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 20:58:42,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:58:42,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:58:42,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:58:42,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 20:58:42,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:58:42,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 20:58:42,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:58:42,490 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:58:42,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:58:42,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:58:42,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:58:42,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:58:42,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 20:58:42,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:58:42,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:58:42,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:58:42,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-14 20:58:42,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:58:42,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-14 20:58:42,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:58:42,536 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:58:42,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:58:42,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:58:42,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:58:42,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:58:42,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-14 20:58:42,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:58:42,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:58:42,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:58:42,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 20:58:42,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:58:42,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 20:58:42,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:58:42,582 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:58:42,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:58:42,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:58:42,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:58:42,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:58:42,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-14 20:58:42,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:58:42,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:58:42,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:58:42,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-14 20:58:42,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:58:42,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-14 20:58:42,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:58:42,658 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:58:42,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 20:58:42,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:58:42,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-14 20:58:42,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:58:42,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2020-10-14 20:58:42,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:58:42,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:58:42,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:58:42,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-14 20:58:42,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:58:42,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-14 20:58:42,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:58:42,795 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:58:42,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 20:58:42,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 20:58:42,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-14 20:58:42,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:58:42,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 443 [2020-10-14 20:58:42,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:58:42,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:58:42,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:58:42,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-14 20:58:42,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:58:42,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-14 20:58:42,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:58:42,911 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:58:42,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:58:42,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 119 [2020-10-14 20:58:42,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:58:42,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:58:43,250 INFO L134 CoverageAnalysis]: Checked inductivity of 1248 backedges. 577 proven. 120 refuted. 0 times theorem prover too weak. 551 trivial. 0 not checked. [2020-10-14 20:58:43,250 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1247091950] [2020-10-14 20:58:43,250 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 20:58:43,251 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 20:58:43,251 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741043107] [2020-10-14 20:58:43,251 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 20:58:43,251 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 20:58:43,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 20:58:43,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 20:58:43,252 INFO L87 Difference]: Start difference. First operand 29884 states and 34042 transitions. Second operand 7 states. [2020-10-14 20:58:47,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 20:58:47,287 INFO L93 Difference]: Finished difference Result 60407 states and 69021 transitions. [2020-10-14 20:58:47,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 20:58:47,289 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 615 [2020-10-14 20:58:47,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 20:58:47,339 INFO L225 Difference]: With dead ends: 60407 [2020-10-14 20:58:47,339 INFO L226 Difference]: Without dead ends: 30717 [2020-10-14 20:58:47,367 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 20:58:47,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30717 states. [2020-10-14 20:58:47,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30717 to 30248. [2020-10-14 20:58:47,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30248 states. [2020-10-14 20:58:47,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30248 states to 30248 states and 33961 transitions. [2020-10-14 20:58:47,716 INFO L78 Accepts]: Start accepts. Automaton has 30248 states and 33961 transitions. Word has length 615 [2020-10-14 20:58:47,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 20:58:47,716 INFO L479 AbstractCegarLoop]: Abstraction has 30248 states and 33961 transitions. [2020-10-14 20:58:47,716 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 20:58:47,716 INFO L276 IsEmpty]: Start isEmpty. Operand 30248 states and 33961 transitions. [2020-10-14 20:58:47,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 632 [2020-10-14 20:58:47,731 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 20:58:47,731 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-14 20:58:47,731 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-14 20:58:47,731 INFO L427 AbstractCegarLoop]: === Iteration 30 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 20:58:47,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 20:58:47,732 INFO L82 PathProgramCache]: Analyzing trace with hash 1976141265, now seen corresponding path program 1 times [2020-10-14 20:58:47,732 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 20:58:47,732 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [256249677] [2020-10-14 20:58:47,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 20:58:47,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:58:47,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:58:47,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking...